/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-array-hom.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 06:43:53,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 06:43:53,328 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 06:43:53,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 06:43:53,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 06:43:53,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 06:43:53,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 06:43:53,376 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 06:43:53,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 06:43:53,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 06:43:53,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 06:43:53,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 06:43:53,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 06:43:53,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 06:43:53,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 06:43:53,387 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 06:43:53,392 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 06:43:53,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 06:43:53,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 06:43:53,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 06:43:53,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 06:43:53,428 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 06:43:53,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 06:43:53,429 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 06:43:53,429 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 06:43:53,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 06:43:53,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 06:43:53,431 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 06:43:53,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 06:43:53,431 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 06:43:53,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 06:43:53,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 06:43:53,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 06:43:53,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 06:43:53,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 06:43:53,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 06:43:53,432 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 06:43:53,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 06:43:53,433 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 06:43:53,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 06:43:53,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 06:43:53,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 06:43:53,433 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 06:43:53,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 06:43:53,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 06:43:53,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 06:43:53,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 06:43:53,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 06:43:53,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 06:43:53,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 06:43:53,434 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 06:43:53,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 06:43:53,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 06:43:53,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 06:43:53,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 06:43:53,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 06:43:53,719 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 06:43:53,720 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 06:43:53,721 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-array-hom.wvr.bpl [2021-06-05 06:43:53,721 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-array-hom.wvr.bpl' [2021-06-05 06:43:54,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 06:43:54,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 06:43:54,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 06:43:54,041 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 06:43:54,041 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 06:43:54,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:43:54" (1/1) ... [2021-06-05 06:43:54,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:43:54" (1/1) ... [2021-06-05 06:43:54,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 06:43:54,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 06:43:54,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 06:43:54,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 06:43:54,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:43:54" (1/1) ... [2021-06-05 06:43:54,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:43:54" (1/1) ... [2021-06-05 06:43:54,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:43:54" (1/1) ... [2021-06-05 06:43:54,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:43:54" (1/1) ... [2021-06-05 06:43:54,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:43:54" (1/1) ... [2021-06-05 06:43:54,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:43:54" (1/1) ... [2021-06-05 06:43:54,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:43:54" (1/1) ... [2021-06-05 06:43:54,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 06:43:54,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 06:43:54,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 06:43:54,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 06:43:54,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:43:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 06:43:54,129 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 06:43:54,130 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 06:43:54,130 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 06:43:54,130 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 06:43:54,130 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 06:43:54,130 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 06:43:54,130 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 06:43:54,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 06:43:54,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 06:43:54,131 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 06:43:54,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 06:43:54,131 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 06:43:54,131 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 06:43:54,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 06:43:54,262 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 06:43:54,263 INFO L202 PluginConnector]: Adding new model min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 06:43:54 BoogieIcfgContainer [2021-06-05 06:43:54,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 06:43:54,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 06:43:54,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 06:43:54,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 06:43:54,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:43:54" (1/2) ... [2021-06-05 06:43:54,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b656ed8 and model type min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 06:43:54, skipping insertion in model container [2021-06-05 06:43:54,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 06:43:54" (2/2) ... [2021-06-05 06:43:54,269 INFO L111 eAbstractionObserver]: Analyzing ICFG min-array-hom.wvr.bpl [2021-06-05 06:43:54,273 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 06:43:54,273 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 06:43:54,273 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 06:43:54,273 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 06:43:54,305 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 06:43:54,324 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 06:43:54,336 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 06:43:54,337 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 06:43:54,337 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 06:43:54,337 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 06:43:54,337 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 06:43:54,337 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 06:43:54,337 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 06:43:54,337 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 06:43:54,342 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 29 transitions, 82 flow [2021-06-05 06:43:54,365 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:54,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:54,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 06:43:54,373 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:54,373 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:54,373 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:54,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:54,379 INFO L82 PathProgramCache]: Analyzing trace with hash -986458276, now seen corresponding path program 1 times [2021-06-05 06:43:54,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:54,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492988648] [2021-06-05 06:43:54,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:54,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:54,553 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:54,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492988648] [2021-06-05 06:43:54,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492988648] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 06:43:54,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 06:43:54,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 06:43:54,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723309569] [2021-06-05 06:43:54,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 06:43:54,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:54,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 06:43:54,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 06:43:54,578 INFO L87 Difference]: Start difference. First operand has 114 states, 112 states have (on average 2.8035714285714284) internal successors, (314), 113 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:54,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:54,620 INFO L93 Difference]: Finished difference Result 217 states and 617 transitions. [2021-06-05 06:43:54,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 06:43:54,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 06:43:54,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:54,632 INFO L225 Difference]: With dead ends: 217 [2021-06-05 06:43:54,632 INFO L226 Difference]: Without dead ends: 202 [2021-06-05 06:43:54,633 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 06:43:54,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-06-05 06:43:54,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 149. [2021-06-05 06:43:54,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.831081081081081) internal successors, (419), 148 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:54,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 419 transitions. [2021-06-05 06:43:54,687 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 419 transitions. Word has length 18 [2021-06-05 06:43:54,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:54,688 INFO L482 AbstractCegarLoop]: Abstraction has 149 states and 419 transitions. [2021-06-05 06:43:54,688 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 419 transitions. [2021-06-05 06:43:54,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 06:43:54,689 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:54,689 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:54,690 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 06:43:54,690 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:54,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:54,690 INFO L82 PathProgramCache]: Analyzing trace with hash -433058596, now seen corresponding path program 1 times [2021-06-05 06:43:54,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:54,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394164228] [2021-06-05 06:43:54,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:54,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:43:54,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:54,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394164228] [2021-06-05 06:43:54,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394164228] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 06:43:54,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 06:43:54,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 06:43:54,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479846437] [2021-06-05 06:43:54,759 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 06:43:54,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:54,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 06:43:54,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 06:43:54,761 INFO L87 Difference]: Start difference. First operand 149 states and 419 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:54,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:54,804 INFO L93 Difference]: Finished difference Result 158 states and 445 transitions. [2021-06-05 06:43:54,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 06:43:54,805 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 06:43:54,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:54,807 INFO L225 Difference]: With dead ends: 158 [2021-06-05 06:43:54,807 INFO L226 Difference]: Without dead ends: 158 [2021-06-05 06:43:54,808 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 06:43:54,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-06-05 06:43:54,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 133. [2021-06-05 06:43:54,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 2.8333333333333335) internal successors, (374), 132 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:54,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 374 transitions. [2021-06-05 06:43:54,824 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 374 transitions. Word has length 20 [2021-06-05 06:43:54,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:54,825 INFO L482 AbstractCegarLoop]: Abstraction has 133 states and 374 transitions. [2021-06-05 06:43:54,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:54,825 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 374 transitions. [2021-06-05 06:43:54,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 06:43:54,829 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:54,829 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:54,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 06:43:54,830 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:54,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:54,831 INFO L82 PathProgramCache]: Analyzing trace with hash 275548602, now seen corresponding path program 1 times [2021-06-05 06:43:54,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:54,831 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579501613] [2021-06-05 06:43:54,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:54,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:43:54,868 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:54,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579501613] [2021-06-05 06:43:54,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579501613] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 06:43:54,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 06:43:54,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 06:43:54,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968468332] [2021-06-05 06:43:54,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 06:43:54,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:54,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 06:43:54,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 06:43:54,874 INFO L87 Difference]: Start difference. First operand 133 states and 374 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:54,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:54,923 INFO L93 Difference]: Finished difference Result 183 states and 522 transitions. [2021-06-05 06:43:54,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 06:43:54,924 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 06:43:54,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:54,926 INFO L225 Difference]: With dead ends: 183 [2021-06-05 06:43:54,928 INFO L226 Difference]: Without dead ends: 183 [2021-06-05 06:43:54,929 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.5ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 06:43:54,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-06-05 06:43:54,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 158. [2021-06-05 06:43:54,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.8535031847133756) internal successors, (448), 157 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:54,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 448 transitions. [2021-06-05 06:43:54,942 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 448 transitions. Word has length 20 [2021-06-05 06:43:54,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:54,942 INFO L482 AbstractCegarLoop]: Abstraction has 158 states and 448 transitions. [2021-06-05 06:43:54,943 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:54,943 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 448 transitions. [2021-06-05 06:43:54,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 06:43:54,944 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:54,944 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:54,944 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 06:43:54,944 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:54,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:54,945 INFO L82 PathProgramCache]: Analyzing trace with hash -483303622, now seen corresponding path program 1 times [2021-06-05 06:43:54,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:54,945 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606651642] [2021-06-05 06:43:54,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:55,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:55,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:55,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606651642] [2021-06-05 06:43:55,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606651642] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:55,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863546347] [2021-06-05 06:43:55,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:55,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 06:43:55,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:55,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:55,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:55,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 10 [2021-06-05 06:43:55,680 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:55,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:55,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:55,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 06:43:55,684 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:55,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:55,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 06:43:55,692 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:55,703 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:55,705 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:43:55,705 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:97, output treesize:21 [2021-06-05 06:43:55,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:55,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863546347] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:55,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:55,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:43:55,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967320097] [2021-06-05 06:43:55,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:43:55,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:55,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:43:55,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:43:55,744 INFO L87 Difference]: Start difference. First operand 158 states and 448 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:55,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:55,971 INFO L93 Difference]: Finished difference Result 330 states and 935 transitions. [2021-06-05 06:43:55,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 06:43:55,971 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 06:43:55,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:55,974 INFO L225 Difference]: With dead ends: 330 [2021-06-05 06:43:55,974 INFO L226 Difference]: Without dead ends: 315 [2021-06-05 06:43:55,975 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 382.3ms TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:43:55,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-06-05 06:43:55,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 224. [2021-06-05 06:43:55,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 2.8699551569506725) internal successors, (640), 223 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:55,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 640 transitions. [2021-06-05 06:43:55,983 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 640 transitions. Word has length 22 [2021-06-05 06:43:55,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:55,984 INFO L482 AbstractCegarLoop]: Abstraction has 224 states and 640 transitions. [2021-06-05 06:43:55,984 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:55,984 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 640 transitions. [2021-06-05 06:43:55,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 06:43:55,984 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:55,985 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:56,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:56,201 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:56,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:56,201 INFO L82 PathProgramCache]: Analyzing trace with hash -651112714, now seen corresponding path program 2 times [2021-06-05 06:43:56,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:56,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768364412] [2021-06-05 06:43:56,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:56,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:56,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:56,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768364412] [2021-06-05 06:43:56,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768364412] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:56,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744407426] [2021-06-05 06:43:56,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:56,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:43:56,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:56,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 06:43:56,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:56,688 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:56,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-06-05 06:43:56,700 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:56,709 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:56,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-05 06:43:56,711 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:56,720 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:56,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-05 06:43:56,722 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:56,729 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:56,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:43:56,731 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:56,778 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:56,789 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:43:56,789 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:133, output treesize:122 [2021-06-05 06:43:56,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:56,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744407426] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:56,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:56,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-06-05 06:43:56,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129301259] [2021-06-05 06:43:56,936 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:43:56,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:56,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:43:56,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:43:56,936 INFO L87 Difference]: Start difference. First operand 224 states and 640 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:57,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:57,419 INFO L93 Difference]: Finished difference Result 374 states and 1077 transitions. [2021-06-05 06:43:57,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 06:43:57,420 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 06:43:57,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:57,425 INFO L225 Difference]: With dead ends: 374 [2021-06-05 06:43:57,425 INFO L226 Difference]: Without dead ends: 359 [2021-06-05 06:43:57,425 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 667.3ms TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:43:57,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-06-05 06:43:57,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 229. [2021-06-05 06:43:57,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 2.912280701754386) internal successors, (664), 228 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:57,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 664 transitions. [2021-06-05 06:43:57,431 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 664 transitions. Word has length 22 [2021-06-05 06:43:57,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:57,431 INFO L482 AbstractCegarLoop]: Abstraction has 229 states and 664 transitions. [2021-06-05 06:43:57,431 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 13 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:57,432 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 664 transitions. [2021-06-05 06:43:57,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 06:43:57,432 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:57,432 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:57,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-05 06:43:57,644 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:57,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:57,645 INFO L82 PathProgramCache]: Analyzing trace with hash -352339266, now seen corresponding path program 3 times [2021-06-05 06:43:57,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:57,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543145129] [2021-06-05 06:43:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:57,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:57,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:57,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543145129] [2021-06-05 06:43:57,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543145129] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:57,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691404765] [2021-06-05 06:43:57,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:57,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 06:43:57,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:57,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-05 06:43:57,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:58,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:58,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:58,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 06:43:58,009 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:58,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:58,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2021-06-05 06:43:58,013 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:58,046 INFO L628 ElimStorePlain]: treesize reduction 35, result has 56.8 percent of original size [2021-06-05 06:43:58,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:58,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 06:43:58,050 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:58,075 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:58,078 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:43:58,078 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:121, output treesize:21 [2021-06-05 06:43:58,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:58,110 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691404765] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:58,110 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:58,110 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-06-05 06:43:58,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159203528] [2021-06-05 06:43:58,110 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:43:58,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:58,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:43:58,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:43:58,111 INFO L87 Difference]: Start difference. First operand 229 states and 664 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:58,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:58,286 INFO L93 Difference]: Finished difference Result 296 states and 831 transitions. [2021-06-05 06:43:58,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 06:43:58,287 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 06:43:58,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:58,288 INFO L225 Difference]: With dead ends: 296 [2021-06-05 06:43:58,288 INFO L226 Difference]: Without dead ends: 281 [2021-06-05 06:43:58,289 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 307.2ms TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:43:58,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-06-05 06:43:58,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 241. [2021-06-05 06:43:58,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 2.8916666666666666) internal successors, (694), 240 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:58,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 694 transitions. [2021-06-05 06:43:58,294 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 694 transitions. Word has length 22 [2021-06-05 06:43:58,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:58,294 INFO L482 AbstractCegarLoop]: Abstraction has 241 states and 694 transitions. [2021-06-05 06:43:58,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:58,295 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 694 transitions. [2021-06-05 06:43:58,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 06:43:58,295 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:58,295 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:58,508 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-06-05 06:43:58,509 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:58,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:58,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1218486334, now seen corresponding path program 4 times [2021-06-05 06:43:58,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:58,509 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540753321] [2021-06-05 06:43:58,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:58,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:58,675 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:58,675 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540753321] [2021-06-05 06:43:58,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540753321] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:58,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495272802] [2021-06-05 06:43:58,676 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:58,700 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:43:58,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:58,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 06:43:58,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:58,867 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:58,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-05 06:43:58,868 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:58,876 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:58,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:43:58,877 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:58,954 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:58,962 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:58,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 14 [2021-06-05 06:43:58,965 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:58,972 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:58,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2021-06-05 06:43:58,982 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:59,033 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:59,040 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:43:59,040 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:137, output treesize:98 [2021-06-05 06:43:59,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:59,168 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495272802] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:59,168 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:59,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:43:59,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444694016] [2021-06-05 06:43:59,169 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:43:59,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:59,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:43:59,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:43:59,169 INFO L87 Difference]: Start difference. First operand 241 states and 694 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:59,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:59,470 INFO L93 Difference]: Finished difference Result 409 states and 1185 transitions. [2021-06-05 06:43:59,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 06:43:59,470 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-06-05 06:43:59,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:59,472 INFO L225 Difference]: With dead ends: 409 [2021-06-05 06:43:59,472 INFO L226 Difference]: Without dead ends: 394 [2021-06-05 06:43:59,472 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 437.1ms TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:43:59,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-06-05 06:43:59,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 247. [2021-06-05 06:43:59,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 2.9186991869918697) internal successors, (718), 246 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:59,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 718 transitions. [2021-06-05 06:43:59,479 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 718 transitions. Word has length 22 [2021-06-05 06:43:59,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:59,479 INFO L482 AbstractCegarLoop]: Abstraction has 247 states and 718 transitions. [2021-06-05 06:43:59,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:59,479 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 718 transitions. [2021-06-05 06:43:59,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:43:59,480 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:59,480 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:43:59,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:59,693 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:59,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:59,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1613936552, now seen corresponding path program 5 times [2021-06-05 06:43:59,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:59,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78487323] [2021-06-05 06:43:59,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:59,740 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:59,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78487323] [2021-06-05 06:43:59,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78487323] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:59,740 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829881981] [2021-06-05 06:43:59,740 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:59,771 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:43:59,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:59,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:43:59,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:43:59,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829881981] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:59,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:59,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:43:59,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264497786] [2021-06-05 06:43:59,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:43:59,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:59,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:43:59,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:43:59,867 INFO L87 Difference]: Start difference. First operand 247 states and 718 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:00,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:00,186 INFO L93 Difference]: Finished difference Result 619 states and 1783 transitions. [2021-06-05 06:44:00,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:44:00,189 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:00,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:00,191 INFO L225 Difference]: With dead ends: 619 [2021-06-05 06:44:00,192 INFO L226 Difference]: Without dead ends: 619 [2021-06-05 06:44:00,192 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 192.3ms TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:44:00,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-06-05 06:44:00,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 297. [2021-06-05 06:44:00,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 3.050675675675676) internal successors, (903), 296 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:00,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 903 transitions. [2021-06-05 06:44:00,200 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 903 transitions. Word has length 24 [2021-06-05 06:44:00,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:00,201 INFO L482 AbstractCegarLoop]: Abstraction has 297 states and 903 transitions. [2021-06-05 06:44:00,201 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:00,201 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 903 transitions. [2021-06-05 06:44:00,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:00,202 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:00,202 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:00,412 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-06-05 06:44:00,413 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:00,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:00,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1704711900, now seen corresponding path program 6 times [2021-06-05 06:44:00,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:00,413 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703411852] [2021-06-05 06:44:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:00,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:00,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:00,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703411852] [2021-06-05 06:44:00,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703411852] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:00,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000315638] [2021-06-05 06:44:00,452 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:00,477 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:44:00,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:00,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:00,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:00,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000315638] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:00,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:00,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:44:00,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626899477] [2021-06-05 06:44:00,556 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:00,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:00,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:00,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:00,557 INFO L87 Difference]: Start difference. First operand 297 states and 903 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:01,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:01,249 INFO L93 Difference]: Finished difference Result 1078 states and 2992 transitions. [2021-06-05 06:44:01,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:44:01,249 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:01,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:01,253 INFO L225 Difference]: With dead ends: 1078 [2021-06-05 06:44:01,253 INFO L226 Difference]: Without dead ends: 1078 [2021-06-05 06:44:01,254 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 404.6ms TimeCoverageRelationStatistics Valid=540, Invalid=2010, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:44:01,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-06-05 06:44:01,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 302. [2021-06-05 06:44:01,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 3.083056478405316) internal successors, (928), 301 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:01,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 928 transitions. [2021-06-05 06:44:01,263 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 928 transitions. Word has length 24 [2021-06-05 06:44:01,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:01,263 INFO L482 AbstractCegarLoop]: Abstraction has 302 states and 928 transitions. [2021-06-05 06:44:01,263 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:01,263 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 928 transitions. [2021-06-05 06:44:01,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:01,264 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:01,264 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:01,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:01,473 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:01,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:01,473 INFO L82 PathProgramCache]: Analyzing trace with hash -2023303316, now seen corresponding path program 7 times [2021-06-05 06:44:01,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:01,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758343836] [2021-06-05 06:44:01,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:01,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:01,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758343836] [2021-06-05 06:44:01,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758343836] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:01,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215018051] [2021-06-05 06:44:01,505 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:01,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:01,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:01,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:01,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215018051] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:01,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:01,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:44:01,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363578791] [2021-06-05 06:44:01,620 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:01,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:01,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:01,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:01,622 INFO L87 Difference]: Start difference. First operand 302 states and 928 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:02,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:02,192 INFO L93 Difference]: Finished difference Result 951 states and 2692 transitions. [2021-06-05 06:44:02,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:44:02,192 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:02,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:02,196 INFO L225 Difference]: With dead ends: 951 [2021-06-05 06:44:02,196 INFO L226 Difference]: Without dead ends: 951 [2021-06-05 06:44:02,196 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 359.9ms TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 06:44:02,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2021-06-05 06:44:02,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 293. [2021-06-05 06:44:02,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 3.0616438356164384) internal successors, (894), 292 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:02,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 894 transitions. [2021-06-05 06:44:02,205 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 894 transitions. Word has length 24 [2021-06-05 06:44:02,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:02,205 INFO L482 AbstractCegarLoop]: Abstraction has 293 states and 894 transitions. [2021-06-05 06:44:02,205 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:02,205 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 894 transitions. [2021-06-05 06:44:02,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:02,206 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:02,206 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:02,421 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:02,421 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:02,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:02,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1087164644, now seen corresponding path program 1 times [2021-06-05 06:44:02,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:02,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333752655] [2021-06-05 06:44:02,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:02,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:02,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333752655] [2021-06-05 06:44:02,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333752655] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:02,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179694459] [2021-06-05 06:44:02,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:02,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 06:44:02,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:02,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179694459] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:02,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:02,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 06:44:02,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823777011] [2021-06-05 06:44:02,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 06:44:02,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:02,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 06:44:02,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 06:44:02,532 INFO L87 Difference]: Start difference. First operand 293 states and 894 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:02,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:02,655 INFO L93 Difference]: Finished difference Result 669 states and 1943 transitions. [2021-06-05 06:44:02,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 06:44:02,656 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:02,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:02,658 INFO L225 Difference]: With dead ends: 669 [2021-06-05 06:44:02,658 INFO L226 Difference]: Without dead ends: 663 [2021-06-05 06:44:02,659 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 66.7ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:02,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-06-05 06:44:02,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 413. [2021-06-05 06:44:02,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 3.1699029126213594) internal successors, (1306), 412 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:02,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1306 transitions. [2021-06-05 06:44:02,669 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1306 transitions. Word has length 24 [2021-06-05 06:44:02,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:02,669 INFO L482 AbstractCegarLoop]: Abstraction has 413 states and 1306 transitions. [2021-06-05 06:44:02,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1306 transitions. [2021-06-05 06:44:02,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:02,670 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:02,670 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:02,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-06-05 06:44:02,885 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:02,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:02,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1524133352, now seen corresponding path program 8 times [2021-06-05 06:44:02,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:02,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241094836] [2021-06-05 06:44:02,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:02,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:02,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:02,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241094836] [2021-06-05 06:44:02,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241094836] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:02,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274805975] [2021-06-05 06:44:02,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:02,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:02,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:02,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:02,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:03,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274805975] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:03,034 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:03,034 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 06:44:03,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636112769] [2021-06-05 06:44:03,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:03,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:03,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:03,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:03,035 INFO L87 Difference]: Start difference. First operand 413 states and 1306 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:03,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:03,190 INFO L93 Difference]: Finished difference Result 710 states and 2124 transitions. [2021-06-05 06:44:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 06:44:03,190 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:03,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:03,192 INFO L225 Difference]: With dead ends: 710 [2021-06-05 06:44:03,192 INFO L226 Difference]: Without dead ends: 672 [2021-06-05 06:44:03,193 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 129.5ms TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:44:03,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-06-05 06:44:03,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 515. [2021-06-05 06:44:03,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 3.17704280155642) internal successors, (1633), 514 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:03,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 1633 transitions. [2021-06-05 06:44:03,202 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 1633 transitions. Word has length 24 [2021-06-05 06:44:03,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:03,202 INFO L482 AbstractCegarLoop]: Abstraction has 515 states and 1633 transitions. [2021-06-05 06:44:03,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:03,202 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1633 transitions. [2021-06-05 06:44:03,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:03,203 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:03,203 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:03,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:03,423 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:03,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:03,423 INFO L82 PathProgramCache]: Analyzing trace with hash 2064876612, now seen corresponding path program 2 times [2021-06-05 06:44:03,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:03,423 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312684205] [2021-06-05 06:44:03,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:03,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:03,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:03,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312684205] [2021-06-05 06:44:03,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312684205] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:03,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787206872] [2021-06-05 06:44:03,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:03,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:03,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:03,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 06:44:03,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:03,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:03,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787206872] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:03,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:03,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 06:44:03,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849359903] [2021-06-05 06:44:03,531 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 06:44:03,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:03,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 06:44:03,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 06:44:03,531 INFO L87 Difference]: Start difference. First operand 515 states and 1633 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:03,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:03,617 INFO L93 Difference]: Finished difference Result 830 states and 2453 transitions. [2021-06-05 06:44:03,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 06:44:03,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:03,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:03,632 INFO L225 Difference]: With dead ends: 830 [2021-06-05 06:44:03,632 INFO L226 Difference]: Without dead ends: 830 [2021-06-05 06:44:03,632 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 60.8ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:03,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-06-05 06:44:03,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 530. [2021-06-05 06:44:03,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 3.153119092627599) internal successors, (1668), 529 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:03,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1668 transitions. [2021-06-05 06:44:03,643 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1668 transitions. Word has length 24 [2021-06-05 06:44:03,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:03,643 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1668 transitions. [2021-06-05 06:44:03,643 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:03,643 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1668 transitions. [2021-06-05 06:44:03,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:03,644 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:03,644 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:03,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:03,857 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:03,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:03,857 INFO L82 PathProgramCache]: Analyzing trace with hash 718195046, now seen corresponding path program 9 times [2021-06-05 06:44:03,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:03,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688050167] [2021-06-05 06:44:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:03,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:03,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688050167] [2021-06-05 06:44:03,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688050167] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:03,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23620613] [2021-06-05 06:44:03,888 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:03,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:44:03,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:03,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:03,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:03,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:03,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23620613] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:03,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:03,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:44:03,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435882853] [2021-06-05 06:44:03,977 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:44:03,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:03,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:44:03,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:44:03,978 INFO L87 Difference]: Start difference. First operand 530 states and 1668 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:04,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:04,248 INFO L93 Difference]: Finished difference Result 1196 states and 3492 transitions. [2021-06-05 06:44:04,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 06:44:04,248 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:04,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:04,252 INFO L225 Difference]: With dead ends: 1196 [2021-06-05 06:44:04,252 INFO L226 Difference]: Without dead ends: 1196 [2021-06-05 06:44:04,252 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 154.7ms TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-06-05 06:44:04,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2021-06-05 06:44:04,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 542. [2021-06-05 06:44:04,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 541 states have (on average 3.1497227356746764) internal successors, (1704), 541 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:04,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1704 transitions. [2021-06-05 06:44:04,265 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1704 transitions. Word has length 24 [2021-06-05 06:44:04,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:04,265 INFO L482 AbstractCegarLoop]: Abstraction has 542 states and 1704 transitions. [2021-06-05 06:44:04,265 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:04,266 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1704 transitions. [2021-06-05 06:44:04,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:04,266 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:04,266 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:04,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-06-05 06:44:04,481 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:04,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:04,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1503109140, now seen corresponding path program 10 times [2021-06-05 06:44:04,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:04,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759265429] [2021-06-05 06:44:04,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:04,512 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:04,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:04,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759265429] [2021-06-05 06:44:04,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759265429] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:04,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202772208] [2021-06-05 06:44:04,513 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:04,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:04,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:04,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:04,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:04,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:04,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202772208] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:04,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:04,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:44:04,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624693135] [2021-06-05 06:44:04,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:44:04,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:04,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:44:04,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:44:04,609 INFO L87 Difference]: Start difference. First operand 542 states and 1704 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:04,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:04,982 INFO L93 Difference]: Finished difference Result 1492 states and 4245 transitions. [2021-06-05 06:44:04,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 06:44:04,983 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:04,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:04,987 INFO L225 Difference]: With dead ends: 1492 [2021-06-05 06:44:04,987 INFO L226 Difference]: Without dead ends: 1492 [2021-06-05 06:44:04,988 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 221.8ms TimeCoverageRelationStatistics Valid=292, Invalid=968, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:44:04,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-06-05 06:44:05,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 586. [2021-06-05 06:44:05,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 3.1555555555555554) internal successors, (1846), 585 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:05,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1846 transitions. [2021-06-05 06:44:05,003 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1846 transitions. Word has length 24 [2021-06-05 06:44:05,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:05,003 INFO L482 AbstractCegarLoop]: Abstraction has 586 states and 1846 transitions. [2021-06-05 06:44:05,003 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:05,003 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1846 transitions. [2021-06-05 06:44:05,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:05,004 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:05,004 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:05,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-06-05 06:44:05,217 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:05,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:05,217 INFO L82 PathProgramCache]: Analyzing trace with hash 420086484, now seen corresponding path program 11 times [2021-06-05 06:44:05,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:05,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106768646] [2021-06-05 06:44:05,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:05,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:05,253 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:05,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106768646] [2021-06-05 06:44:05,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106768646] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:05,253 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763274008] [2021-06-05 06:44:05,253 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:05,279 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:05,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:05,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:05,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:05,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:05,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763274008] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:05,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:05,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 06:44:05,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289802871] [2021-06-05 06:44:05,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:05,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:05,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:05,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:05,357 INFO L87 Difference]: Start difference. First operand 586 states and 1846 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:05,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:05,570 INFO L93 Difference]: Finished difference Result 1258 states and 3765 transitions. [2021-06-05 06:44:05,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:44:05,571 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:05,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:05,575 INFO L225 Difference]: With dead ends: 1258 [2021-06-05 06:44:05,575 INFO L226 Difference]: Without dead ends: 1248 [2021-06-05 06:44:05,575 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 139.4ms TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2021-06-05 06:44:05,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-06-05 06:44:05,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 758. [2021-06-05 06:44:05,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 3.224570673712021) internal successors, (2441), 757 states have internal predecessors, (2441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:05,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2441 transitions. [2021-06-05 06:44:05,589 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2441 transitions. Word has length 24 [2021-06-05 06:44:05,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:05,589 INFO L482 AbstractCegarLoop]: Abstraction has 758 states and 2441 transitions. [2021-06-05 06:44:05,589 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:05,590 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2441 transitions. [2021-06-05 06:44:05,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:05,591 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:05,591 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:05,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-06-05 06:44:05,807 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:05,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:05,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1891164602, now seen corresponding path program 12 times [2021-06-05 06:44:05,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:05,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291124665] [2021-06-05 06:44:05,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:05,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:05,840 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:05,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291124665] [2021-06-05 06:44:05,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291124665] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:05,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642769983] [2021-06-05 06:44:05,840 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:05,870 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:44:05,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:05,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:05,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:05,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642769983] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:05,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:05,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 06:44:05,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024581774] [2021-06-05 06:44:05,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:05,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:05,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:05,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:05,955 INFO L87 Difference]: Start difference. First operand 758 states and 2441 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:06,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:06,208 INFO L93 Difference]: Finished difference Result 1329 states and 4025 transitions. [2021-06-05 06:44:06,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 06:44:06,213 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:06,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:06,217 INFO L225 Difference]: With dead ends: 1329 [2021-06-05 06:44:06,217 INFO L226 Difference]: Without dead ends: 1329 [2021-06-05 06:44:06,217 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 170.2ms TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:44:06,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-05 06:44:06,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 764. [2021-06-05 06:44:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 763 states have (on average 3.220183486238532) internal successors, (2457), 763 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:06,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 2457 transitions. [2021-06-05 06:44:06,231 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 2457 transitions. Word has length 24 [2021-06-05 06:44:06,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:06,231 INFO L482 AbstractCegarLoop]: Abstraction has 764 states and 2457 transitions. [2021-06-05 06:44:06,231 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:06,232 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 2457 transitions. [2021-06-05 06:44:06,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:06,233 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:06,233 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:06,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:06,449 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:06,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:06,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1458287998, now seen corresponding path program 13 times [2021-06-05 06:44:06,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:06,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165561323] [2021-06-05 06:44:06,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:06,477 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:06,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:06,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165561323] [2021-06-05 06:44:06,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165561323] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:06,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685110346] [2021-06-05 06:44:06,477 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:06,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:06,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:06,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:06,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685110346] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:06,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:06,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:44:06,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640733107] [2021-06-05 06:44:06,554 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:44:06,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:06,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:44:06,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:44:06,554 INFO L87 Difference]: Start difference. First operand 764 states and 2457 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:06,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:06,909 INFO L93 Difference]: Finished difference Result 1548 states and 4638 transitions. [2021-06-05 06:44:06,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 06:44:06,917 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:06,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:06,931 INFO L225 Difference]: With dead ends: 1548 [2021-06-05 06:44:06,931 INFO L226 Difference]: Without dead ends: 1544 [2021-06-05 06:44:06,932 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 210.9ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:44:06,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-06-05 06:44:06,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 772. [2021-06-05 06:44:06,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 771 states have (on average 3.204928664072633) internal successors, (2471), 771 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:06,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 2471 transitions. [2021-06-05 06:44:06,981 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 2471 transitions. Word has length 24 [2021-06-05 06:44:06,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:06,981 INFO L482 AbstractCegarLoop]: Abstraction has 772 states and 2471 transitions. [2021-06-05 06:44:06,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:06,981 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 2471 transitions. [2021-06-05 06:44:06,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:06,982 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:06,982 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:07,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:07,197 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:07,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:07,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1186278808, now seen corresponding path program 14 times [2021-06-05 06:44:07,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:07,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586471564] [2021-06-05 06:44:07,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:07,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:07,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:07,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586471564] [2021-06-05 06:44:07,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586471564] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:07,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944545534] [2021-06-05 06:44:07,252 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:07,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:07,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:07,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:07,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:07,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:07,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944545534] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:07,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:07,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:44:07,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467181494] [2021-06-05 06:44:07,362 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:07,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:07,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:07,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:07,362 INFO L87 Difference]: Start difference. First operand 772 states and 2471 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:08,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:08,020 INFO L93 Difference]: Finished difference Result 2734 states and 8136 transitions. [2021-06-05 06:44:08,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:44:08,021 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:08,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:08,033 INFO L225 Difference]: With dead ends: 2734 [2021-06-05 06:44:08,034 INFO L226 Difference]: Without dead ends: 2734 [2021-06-05 06:44:08,034 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 390.6ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:44:08,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2021-06-05 06:44:08,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 841. [2021-06-05 06:44:08,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 840 states have (on average 3.3107142857142855) internal successors, (2781), 840 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:08,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 2781 transitions. [2021-06-05 06:44:08,060 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 2781 transitions. Word has length 24 [2021-06-05 06:44:08,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:08,060 INFO L482 AbstractCegarLoop]: Abstraction has 841 states and 2781 transitions. [2021-06-05 06:44:08,060 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:08,060 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 2781 transitions. [2021-06-05 06:44:08,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:08,061 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:08,061 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:08,267 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:08,267 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:08,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:08,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1753230888, now seen corresponding path program 15 times [2021-06-05 06:44:08,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:08,268 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589995478] [2021-06-05 06:44:08,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:08,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:08,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:08,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589995478] [2021-06-05 06:44:08,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589995478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:08,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445500089] [2021-06-05 06:44:08,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:08,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:44:08,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:08,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:08,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:08,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445500089] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:08,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:08,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:44:08,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793741979] [2021-06-05 06:44:08,407 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:08,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:08,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:08,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:08,408 INFO L87 Difference]: Start difference. First operand 841 states and 2781 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:09,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:09,100 INFO L93 Difference]: Finished difference Result 2693 states and 8043 transitions. [2021-06-05 06:44:09,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:44:09,101 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:09,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:09,106 INFO L225 Difference]: With dead ends: 2693 [2021-06-05 06:44:09,106 INFO L226 Difference]: Without dead ends: 2693 [2021-06-05 06:44:09,106 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 435.6ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:44:09,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-06-05 06:44:09,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 831. [2021-06-05 06:44:09,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 830 states have (on average 3.289156626506024) internal successors, (2730), 830 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:09,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2730 transitions. [2021-06-05 06:44:09,129 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2730 transitions. Word has length 24 [2021-06-05 06:44:09,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:09,129 INFO L482 AbstractCegarLoop]: Abstraction has 831 states and 2730 transitions. [2021-06-05 06:44:09,129 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:09,129 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2730 transitions. [2021-06-05 06:44:09,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:09,130 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:09,130 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:09,337 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-06-05 06:44:09,337 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:09,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:09,338 INFO L82 PathProgramCache]: Analyzing trace with hash 580885030, now seen corresponding path program 16 times [2021-06-05 06:44:09,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:09,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21961920] [2021-06-05 06:44:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:09,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:09,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21961920] [2021-06-05 06:44:09,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21961920] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:09,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478654034] [2021-06-05 06:44:09,368 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:09,402 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:09,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:09,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:09,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:09,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:09,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478654034] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:09,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:09,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:44:09,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857176235] [2021-06-05 06:44:09,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:44:09,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:09,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:44:09,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:44:09,469 INFO L87 Difference]: Start difference. First operand 831 states and 2730 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:09,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:09,990 INFO L93 Difference]: Finished difference Result 2677 states and 7780 transitions. [2021-06-05 06:44:09,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:44:09,991 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:09,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:09,995 INFO L225 Difference]: With dead ends: 2677 [2021-06-05 06:44:09,995 INFO L226 Difference]: Without dead ends: 2677 [2021-06-05 06:44:09,996 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 310.3ms TimeCoverageRelationStatistics Valid=493, Invalid=1669, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 06:44:09,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2021-06-05 06:44:10,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 845. [2021-06-05 06:44:10,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 3.2997630331753554) internal successors, (2785), 844 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2785 transitions. [2021-06-05 06:44:10,031 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2785 transitions. Word has length 24 [2021-06-05 06:44:10,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:10,031 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2785 transitions. [2021-06-05 06:44:10,031 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:10,031 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2785 transitions. [2021-06-05 06:44:10,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:10,033 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:10,033 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:10,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-06-05 06:44:10,253 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:10,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:10,253 INFO L82 PathProgramCache]: Analyzing trace with hash 662261118, now seen corresponding path program 17 times [2021-06-05 06:44:10,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:10,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381410133] [2021-06-05 06:44:10,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:10,281 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:10,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:10,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381410133] [2021-06-05 06:44:10,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381410133] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:10,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4076579] [2021-06-05 06:44:10,282 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:10,306 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:44:10,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:10,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:10,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:10,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4076579] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:10,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:10,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:44:10,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691348674] [2021-06-05 06:44:10,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:44:10,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:10,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:44:10,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:44:10,375 INFO L87 Difference]: Start difference. First operand 845 states and 2785 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:10,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:10,904 INFO L93 Difference]: Finished difference Result 2474 states and 7308 transitions. [2021-06-05 06:44:10,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:44:10,905 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:10,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:10,909 INFO L225 Difference]: With dead ends: 2474 [2021-06-05 06:44:10,909 INFO L226 Difference]: Without dead ends: 2470 [2021-06-05 06:44:10,909 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 304.1ms TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:44:10,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-06-05 06:44:10,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 845. [2021-06-05 06:44:10,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 3.2973933649289098) internal successors, (2783), 844 states have internal predecessors, (2783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:10,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2783 transitions. [2021-06-05 06:44:10,931 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2783 transitions. Word has length 24 [2021-06-05 06:44:10,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:10,932 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2783 transitions. [2021-06-05 06:44:10,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:10,932 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2783 transitions. [2021-06-05 06:44:10,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:10,933 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:10,933 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:11,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-06-05 06:44:11,149 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:11,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:11,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1592918334, now seen corresponding path program 18 times [2021-06-05 06:44:11,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:11,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672178118] [2021-06-05 06:44:11,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:11,179 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:11,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:11,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672178118] [2021-06-05 06:44:11,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672178118] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:11,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784060646] [2021-06-05 06:44:11,179 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-05 06:44:11,228 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:44:11,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:11,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:11,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:11,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784060646] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:11,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:11,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:44:11,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322098090] [2021-06-05 06:44:11,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:11,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:11,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:11,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:11,293 INFO L87 Difference]: Start difference. First operand 845 states and 2783 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:11,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:11,875 INFO L93 Difference]: Finished difference Result 2514 states and 7408 transitions. [2021-06-05 06:44:11,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 06:44:11,875 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:11,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:11,880 INFO L225 Difference]: With dead ends: 2514 [2021-06-05 06:44:11,880 INFO L226 Difference]: Without dead ends: 2514 [2021-06-05 06:44:11,880 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 334.6ms TimeCoverageRelationStatistics Valid=480, Invalid=1590, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:44:11,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2021-06-05 06:44:11,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 853. [2021-06-05 06:44:11,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 3.3039906103286385) internal successors, (2815), 852 states have internal predecessors, (2815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:11,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2815 transitions. [2021-06-05 06:44:11,901 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2815 transitions. Word has length 24 [2021-06-05 06:44:11,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:11,902 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2815 transitions. [2021-06-05 06:44:11,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:11,902 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2815 transitions. [2021-06-05 06:44:11,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:11,903 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:11,903 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:12,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-06-05 06:44:12,117 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:12,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:12,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1059009808, now seen corresponding path program 19 times [2021-06-05 06:44:12,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:12,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466031175] [2021-06-05 06:44:12,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:12,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:12,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466031175] [2021-06-05 06:44:12,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466031175] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:12,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808987242] [2021-06-05 06:44:12,146 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:12,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:12,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:12,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:12,241 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808987242] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:12,241 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:12,241 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:44:12,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730998] [2021-06-05 06:44:12,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:12,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:12,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:12,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:12,242 INFO L87 Difference]: Start difference. First operand 853 states and 2815 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:12,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:12,801 INFO L93 Difference]: Finished difference Result 2332 states and 6984 transitions. [2021-06-05 06:44:12,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:44:12,802 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:12,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:12,820 INFO L225 Difference]: With dead ends: 2332 [2021-06-05 06:44:12,820 INFO L226 Difference]: Without dead ends: 2328 [2021-06-05 06:44:12,820 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 313.2ms TimeCoverageRelationStatistics Valid=460, Invalid=1432, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:44:12,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2021-06-05 06:44:12,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 853. [2021-06-05 06:44:12,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 852 states have (on average 3.301643192488263) internal successors, (2813), 852 states have internal predecessors, (2813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:12,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2813 transitions. [2021-06-05 06:44:12,840 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2813 transitions. Word has length 24 [2021-06-05 06:44:12,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:12,840 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2813 transitions. [2021-06-05 06:44:12,840 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:12,840 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2813 transitions. [2021-06-05 06:44:12,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:12,841 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:12,841 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:13,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-06-05 06:44:13,053 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:13,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:13,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1971295360, now seen corresponding path program 3 times [2021-06-05 06:44:13,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:13,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139874084] [2021-06-05 06:44:13,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:13,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:13,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:13,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139874084] [2021-06-05 06:44:13,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139874084] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:13,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272636268] [2021-06-05 06:44:13,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:13,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 06:44:13,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:13,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 06:44:13,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:13,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:13,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272636268] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:13,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:13,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 06:44:13,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890388476] [2021-06-05 06:44:13,137 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 06:44:13,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:13,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 06:44:13,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 06:44:13,137 INFO L87 Difference]: Start difference. First operand 853 states and 2813 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:13,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:13,206 INFO L93 Difference]: Finished difference Result 929 states and 3034 transitions. [2021-06-05 06:44:13,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 06:44:13,206 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:13,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:13,208 INFO L225 Difference]: With dead ends: 929 [2021-06-05 06:44:13,208 INFO L226 Difference]: Without dead ends: 929 [2021-06-05 06:44:13,208 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:44:13,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-06-05 06:44:13,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 780. [2021-06-05 06:44:13,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 779 states have (on average 3.3029525032092426) internal successors, (2573), 779 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:13,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2573 transitions. [2021-06-05 06:44:13,219 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2573 transitions. Word has length 24 [2021-06-05 06:44:13,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:13,220 INFO L482 AbstractCegarLoop]: Abstraction has 780 states and 2573 transitions. [2021-06-05 06:44:13,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:13,220 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2573 transitions. [2021-06-05 06:44:13,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:13,221 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:13,221 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:13,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:13,436 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:13,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:13,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1041095616, now seen corresponding path program 20 times [2021-06-05 06:44:13,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:13,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847703361] [2021-06-05 06:44:13,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:13,468 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:13,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:13,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847703361] [2021-06-05 06:44:13,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847703361] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:13,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525288551] [2021-06-05 06:44:13,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-05 06:44:13,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:13,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:13,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:13,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:13,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:13,535 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525288551] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:13,535 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:13,535 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 06:44:13,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573883522] [2021-06-05 06:44:13,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:44:13,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:13,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:44:13,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:44:13,536 INFO L87 Difference]: Start difference. First operand 780 states and 2573 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:13,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:13,795 INFO L93 Difference]: Finished difference Result 1555 states and 4761 transitions. [2021-06-05 06:44:13,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:44:13,796 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:13,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:13,798 INFO L225 Difference]: With dead ends: 1555 [2021-06-05 06:44:13,798 INFO L226 Difference]: Without dead ends: 1555 [2021-06-05 06:44:13,799 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 139.2ms TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:44:13,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2021-06-05 06:44:13,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 842. [2021-06-05 06:44:13,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 3.296076099881094) internal successors, (2772), 841 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:13,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 2772 transitions. [2021-06-05 06:44:13,813 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 2772 transitions. Word has length 24 [2021-06-05 06:44:13,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:13,813 INFO L482 AbstractCegarLoop]: Abstraction has 842 states and 2772 transitions. [2021-06-05 06:44:13,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:13,814 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 2772 transitions. [2021-06-05 06:44:13,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:13,815 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:13,815 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:14,028 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,24 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:14,029 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:14,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:14,029 INFO L82 PathProgramCache]: Analyzing trace with hash 861583836, now seen corresponding path program 21 times [2021-06-05 06:44:14,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:14,029 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818069248] [2021-06-05 06:44:14,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:14,055 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:14,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818069248] [2021-06-05 06:44:14,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818069248] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:14,055 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289851752] [2021-06-05 06:44:14,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:14,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:44:14,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:14,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:14,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:14,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:14,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289851752] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:14,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:14,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 06:44:14,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166838457] [2021-06-05 06:44:14,125 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 06:44:14,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:14,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 06:44:14,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 06:44:14,126 INFO L87 Difference]: Start difference. First operand 842 states and 2772 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:14,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:14,347 INFO L93 Difference]: Finished difference Result 1605 states and 4891 transitions. [2021-06-05 06:44:14,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 06:44:14,347 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:14,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:14,349 INFO L225 Difference]: With dead ends: 1605 [2021-06-05 06:44:14,349 INFO L226 Difference]: Without dead ends: 1605 [2021-06-05 06:44:14,350 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 123.5ms TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2021-06-05 06:44:14,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2021-06-05 06:44:14,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 896. [2021-06-05 06:44:14,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 3.2905027932960893) internal successors, (2945), 895 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:14,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2945 transitions. [2021-06-05 06:44:14,373 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2945 transitions. Word has length 24 [2021-06-05 06:44:14,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:14,374 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2945 transitions. [2021-06-05 06:44:14,374 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:14,374 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2945 transitions. [2021-06-05 06:44:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:14,375 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:14,375 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:14,591 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:14,591 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:14,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:14,591 INFO L82 PathProgramCache]: Analyzing trace with hash 816762694, now seen corresponding path program 22 times [2021-06-05 06:44:14,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:14,592 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493360138] [2021-06-05 06:44:14,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:14,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:14,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:14,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493360138] [2021-06-05 06:44:14,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493360138] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:14,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302795081] [2021-06-05 06:44:14,616 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:14,659 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:14,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:14,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:14,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:14,697 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:44:14,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302795081] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:14,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:14,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 06:44:14,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758868592] [2021-06-05 06:44:14,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 06:44:14,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:14,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 06:44:14,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 06:44:14,698 INFO L87 Difference]: Start difference. First operand 896 states and 2945 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:14,868 INFO L93 Difference]: Finished difference Result 1524 states and 4690 transitions. [2021-06-05 06:44:14,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:44:14,868 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:14,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:14,871 INFO L225 Difference]: With dead ends: 1524 [2021-06-05 06:44:14,871 INFO L226 Difference]: Without dead ends: 1520 [2021-06-05 06:44:14,871 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 93.1ms TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-06-05 06:44:14,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-06-05 06:44:14,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 896. [2021-06-05 06:44:14,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 895 states have (on average 3.288268156424581) internal successors, (2943), 895 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:14,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2943 transitions. [2021-06-05 06:44:14,885 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2943 transitions. Word has length 24 [2021-06-05 06:44:14,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:14,885 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2943 transitions. [2021-06-05 06:44:14,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:14,885 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2943 transitions. [2021-06-05 06:44:14,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:14,886 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:14,887 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:15,102 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-06-05 06:44:15,102 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:15,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:15,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1414099352, now seen corresponding path program 23 times [2021-06-05 06:44:15,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:15,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687893899] [2021-06-05 06:44:15,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:15,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:15,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687893899] [2021-06-05 06:44:15,133 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687893899] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:15,133 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122609246] [2021-06-05 06:44:15,133 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:15,156 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:44:15,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:15,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:15,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:15,198 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122609246] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:15,198 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:15,198 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 06:44:15,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005480963] [2021-06-05 06:44:15,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:44:15,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:15,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:44:15,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:44:15,199 INFO L87 Difference]: Start difference. First operand 896 states and 2943 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:15,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:15,412 INFO L93 Difference]: Finished difference Result 1508 states and 4652 transitions. [2021-06-05 06:44:15,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:44:15,413 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:15,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:15,415 INFO L225 Difference]: With dead ends: 1508 [2021-06-05 06:44:15,415 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 06:44:15,415 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 126.9ms TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:44:15,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 06:44:15,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 904. [2021-06-05 06:44:15,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 904 states, 903 states have (on average 3.276854928017719) internal successors, (2959), 903 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:15,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2959 transitions. [2021-06-05 06:44:15,428 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2959 transitions. Word has length 24 [2021-06-05 06:44:15,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:15,428 INFO L482 AbstractCegarLoop]: Abstraction has 904 states and 2959 transitions. [2021-06-05 06:44:15,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:15,429 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2959 transitions. [2021-06-05 06:44:15,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:15,430 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:15,430 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:15,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:15,649 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:15,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:15,649 INFO L82 PathProgramCache]: Analyzing trace with hash 887679068, now seen corresponding path program 24 times [2021-06-05 06:44:15,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:15,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670099925] [2021-06-05 06:44:15,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:15,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:15,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670099925] [2021-06-05 06:44:15,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670099925] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:15,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451820210] [2021-06-05 06:44:15,680 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:15,704 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:44:15,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:15,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:15,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:15,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:15,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451820210] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:15,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:15,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:44:15,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062717303] [2021-06-05 06:44:15,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:15,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:15,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:15,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:15,782 INFO L87 Difference]: Start difference. First operand 904 states and 2959 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:16,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:16,231 INFO L93 Difference]: Finished difference Result 2412 states and 7565 transitions. [2021-06-05 06:44:16,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:44:16,231 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:16,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:16,234 INFO L225 Difference]: With dead ends: 2412 [2021-06-05 06:44:16,234 INFO L226 Difference]: Without dead ends: 2412 [2021-06-05 06:44:16,235 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 298.3ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:44:16,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-06-05 06:44:16,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 960. [2021-06-05 06:44:16,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 3.367049009384776) internal successors, (3229), 959 states have internal predecessors, (3229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:16,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 3229 transitions. [2021-06-05 06:44:16,253 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 3229 transitions. Word has length 24 [2021-06-05 06:44:16,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:16,253 INFO L482 AbstractCegarLoop]: Abstraction has 960 states and 3229 transitions. [2021-06-05 06:44:16,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:16,253 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 3229 transitions. [2021-06-05 06:44:16,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:16,254 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:16,255 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:16,468 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-06-05 06:44:16,469 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:16,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:16,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1454631148, now seen corresponding path program 25 times [2021-06-05 06:44:16,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:16,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057030937] [2021-06-05 06:44:16,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:16,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:16,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:16,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057030937] [2021-06-05 06:44:16,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057030937] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:16,504 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215196303] [2021-06-05 06:44:16,504 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:16,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:16,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:16,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:16,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215196303] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:16,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:16,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:44:16,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978454126] [2021-06-05 06:44:16,615 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:16,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:16,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:16,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:16,615 INFO L87 Difference]: Start difference. First operand 960 states and 3229 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:17,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:17,028 INFO L93 Difference]: Finished difference Result 2335 states and 7372 transitions. [2021-06-05 06:44:17,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:44:17,028 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:17,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:17,031 INFO L225 Difference]: With dead ends: 2335 [2021-06-05 06:44:17,031 INFO L226 Difference]: Without dead ends: 2335 [2021-06-05 06:44:17,031 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 273.6ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:44:17,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2021-06-05 06:44:17,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 957. [2021-06-05 06:44:17,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:17,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 06:44:17,052 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 06:44:17,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:17,053 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 06:44:17,053 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:17,053 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 06:44:17,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:17,054 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:17,054 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:17,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:17,263 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:17,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:17,264 INFO L82 PathProgramCache]: Analyzing trace with hash 282285290, now seen corresponding path program 26 times [2021-06-05 06:44:17,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:17,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485418480] [2021-06-05 06:44:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:17,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:17,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485418480] [2021-06-05 06:44:17,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485418480] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:17,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985476545] [2021-06-05 06:44:17,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:17,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:17,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:17,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:17,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:17,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985476545] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:17,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:17,385 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:44:17,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412719463] [2021-06-05 06:44:17,386 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:44:17,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:17,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:44:17,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:44:17,386 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:17,744 INFO L93 Difference]: Finished difference Result 2285 states and 7121 transitions. [2021-06-05 06:44:17,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 06:44:17,744 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:17,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:17,747 INFO L225 Difference]: With dead ends: 2285 [2021-06-05 06:44:17,747 INFO L226 Difference]: Without dead ends: 2285 [2021-06-05 06:44:17,748 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 234.2ms TimeCoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:44:17,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2021-06-05 06:44:17,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 963. [2021-06-05 06:44:17,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 3.367983367983368) internal successors, (3240), 962 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:17,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions. [2021-06-05 06:44:17,765 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24 [2021-06-05 06:44:17,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:17,765 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions. [2021-06-05 06:44:17,765 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:17,765 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions. [2021-06-05 06:44:17,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:17,767 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:17,767 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:17,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-06-05 06:44:17,981 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:17,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:17,981 INFO L82 PathProgramCache]: Analyzing trace with hash 363661378, now seen corresponding path program 27 times [2021-06-05 06:44:17,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:17,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370285773] [2021-06-05 06:44:17,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:18,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:18,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:18,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370285773] [2021-06-05 06:44:18,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370285773] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:18,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418265376] [2021-06-05 06:44:18,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:18,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:44:18,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:18,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:18,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:18,095 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:18,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418265376] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:18,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:18,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:44:18,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136427168] [2021-06-05 06:44:18,095 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:44:18,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:18,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:44:18,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:44:18,096 INFO L87 Difference]: Start difference. First operand 963 states and 3240 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:18,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:18,433 INFO L93 Difference]: Finished difference Result 2176 states and 6849 transitions. [2021-06-05 06:44:18,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:44:18,433 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:18,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:18,435 INFO L225 Difference]: With dead ends: 2176 [2021-06-05 06:44:18,435 INFO L226 Difference]: Without dead ends: 2172 [2021-06-05 06:44:18,436 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 212.5ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:44:18,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2021-06-05 06:44:18,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 957. [2021-06-05 06:44:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:18,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 06:44:18,453 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 06:44:18,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:18,453 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 06:44:18,453 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:18,453 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 06:44:18,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:18,455 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:18,455 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:18,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:18,662 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:18,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:18,663 INFO L82 PathProgramCache]: Analyzing trace with hash 1294318594, now seen corresponding path program 28 times [2021-06-05 06:44:18,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:18,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522179616] [2021-06-05 06:44:18,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:18,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:18,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:18,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522179616] [2021-06-05 06:44:18,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522179616] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:18,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870963417] [2021-06-05 06:44:18,690 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:18,722 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:18,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:18,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:18,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:18,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:18,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870963417] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:18,796 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:18,796 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:44:18,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895006330] [2021-06-05 06:44:18,796 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:18,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:18,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:18,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:18,797 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:19,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:19,125 INFO L93 Difference]: Finished difference Result 2199 states and 6893 transitions. [2021-06-05 06:44:19,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:44:19,125 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:19,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:19,127 INFO L225 Difference]: With dead ends: 2199 [2021-06-05 06:44:19,127 INFO L226 Difference]: Without dead ends: 2199 [2021-06-05 06:44:19,128 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 215.1ms TimeCoverageRelationStatistics Valid=257, Invalid=799, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:44:19,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-06-05 06:44:19,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 963. [2021-06-05 06:44:19,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 3.367983367983368) internal successors, (3240), 962 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:19,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions. [2021-06-05 06:44:19,144 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24 [2021-06-05 06:44:19,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:19,144 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions. [2021-06-05 06:44:19,145 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:19,145 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions. [2021-06-05 06:44:19,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:19,146 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:19,146 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:19,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-06-05 06:44:19,353 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:19,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:19,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1357609548, now seen corresponding path program 29 times [2021-06-05 06:44:19,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:19,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930816071] [2021-06-05 06:44:19,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:19,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:19,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930816071] [2021-06-05 06:44:19,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930816071] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:19,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611933401] [2021-06-05 06:44:19,396 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:19,419 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:44:19,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:19,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:19,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:19,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:19,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611933401] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:19,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:19,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:44:19,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168010597] [2021-06-05 06:44:19,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:19,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:19,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:19,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:19,484 INFO L87 Difference]: Start difference. First operand 963 states and 3240 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:19,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:19,821 INFO L93 Difference]: Finished difference Result 2156 states and 6791 transitions. [2021-06-05 06:44:19,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:44:19,821 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:19,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:19,824 INFO L225 Difference]: With dead ends: 2156 [2021-06-05 06:44:19,824 INFO L226 Difference]: Without dead ends: 2152 [2021-06-05 06:44:19,824 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 215.9ms TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:44:19,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2021-06-05 06:44:19,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 957. [2021-06-05 06:44:19,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 3.3629707112970713) internal successors, (3215), 956 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:19,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 06:44:19,841 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 06:44:19,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:19,841 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 06:44:19,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:19,841 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 06:44:19,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:19,842 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:19,842 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:20,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-06-05 06:44:20,051 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:20,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:20,051 INFO L82 PathProgramCache]: Analyzing trace with hash -354181564, now seen corresponding path program 30 times [2021-06-05 06:44:20,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:20,051 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98623916] [2021-06-05 06:44:20,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:20,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:20,077 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:20,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98623916] [2021-06-05 06:44:20,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98623916] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:20,077 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002563446] [2021-06-05 06:44:20,077 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-05 06:44:20,115 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:44:20,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:20,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:20,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:20,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002563446] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:20,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:20,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:44:20,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330837404] [2021-06-05 06:44:20,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:44:20,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:20,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:44:20,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:44:20,178 INFO L87 Difference]: Start difference. First operand 957 states and 3215 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:20,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:20,492 INFO L93 Difference]: Finished difference Result 2097 states and 6377 transitions. [2021-06-05 06:44:20,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 06:44:20,492 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:20,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:20,495 INFO L225 Difference]: With dead ends: 2097 [2021-06-05 06:44:20,495 INFO L226 Difference]: Without dead ends: 2097 [2021-06-05 06:44:20,495 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 187.1ms TimeCoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:44:20,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2021-06-05 06:44:20,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 1047. [2021-06-05 06:44:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.378585086042065) internal successors, (3534), 1046 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:20,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3534 transitions. [2021-06-05 06:44:20,513 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3534 transitions. Word has length 24 [2021-06-05 06:44:20,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:20,513 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3534 transitions. [2021-06-05 06:44:20,514 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:20,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3534 transitions. [2021-06-05 06:44:20,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:20,515 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:20,515 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:20,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:20,716 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:20,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:20,716 INFO L82 PathProgramCache]: Analyzing trace with hash -272805476, now seen corresponding path program 31 times [2021-06-05 06:44:20,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:20,716 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186576231] [2021-06-05 06:44:20,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:20,744 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:20,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:20,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186576231] [2021-06-05 06:44:20,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186576231] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:20,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398329828] [2021-06-05 06:44:20,745 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:20,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:20,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:20,818 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:20,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398329828] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:20,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:20,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:44:20,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571765968] [2021-06-05 06:44:20,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:44:20,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:20,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:44:20,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:44:20,819 INFO L87 Difference]: Start difference. First operand 1047 states and 3534 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:21,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:21,060 INFO L93 Difference]: Finished difference Result 1963 states and 6051 transitions. [2021-06-05 06:44:21,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:44:21,061 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:21,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:21,063 INFO L225 Difference]: With dead ends: 1963 [2021-06-05 06:44:21,063 INFO L226 Difference]: Without dead ends: 1959 [2021-06-05 06:44:21,063 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 145.6ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:44:21,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2021-06-05 06:44:21,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1047. [2021-06-05 06:44:21,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.376673040152964) internal successors, (3532), 1046 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:21,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3532 transitions. [2021-06-05 06:44:21,080 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3532 transitions. Word has length 24 [2021-06-05 06:44:21,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:21,080 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3532 transitions. [2021-06-05 06:44:21,080 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:21,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3532 transitions. [2021-06-05 06:44:21,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:21,081 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:21,081 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:21,296 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,35 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:21,297 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:21,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:21,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1787897448, now seen corresponding path program 32 times [2021-06-05 06:44:21,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:21,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007559744] [2021-06-05 06:44:21,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:21,323 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:21,324 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:21,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007559744] [2021-06-05 06:44:21,324 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007559744] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:21,324 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709294013] [2021-06-05 06:44:21,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:21,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:21,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:21,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:21,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:21,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:21,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709294013] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:21,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:21,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:44:21,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494486174] [2021-06-05 06:44:21,407 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:44:21,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:21,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:44:21,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:44:21,407 INFO L87 Difference]: Start difference. First operand 1047 states and 3532 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:21,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:21,630 INFO L93 Difference]: Finished difference Result 1728 states and 5494 transitions. [2021-06-05 06:44:21,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:44:21,631 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:21,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:21,633 INFO L225 Difference]: With dead ends: 1728 [2021-06-05 06:44:21,633 INFO L226 Difference]: Without dead ends: 1716 [2021-06-05 06:44:21,633 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 124.9ms TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-06-05 06:44:21,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2021-06-05 06:44:21,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1047. [2021-06-05 06:44:21,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 3.372848948374761) internal successors, (3528), 1046 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:21,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3528 transitions. [2021-06-05 06:44:21,648 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3528 transitions. Word has length 24 [2021-06-05 06:44:21,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:21,648 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3528 transitions. [2021-06-05 06:44:21,648 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:21,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3528 transitions. [2021-06-05 06:44:21,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:21,649 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:21,649 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:21,850 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:21,850 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:21,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:21,850 INFO L82 PathProgramCache]: Analyzing trace with hash -190770732, now seen corresponding path program 33 times [2021-06-05 06:44:21,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:21,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336030536] [2021-06-05 06:44:21,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:21,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:21,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:21,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336030536] [2021-06-05 06:44:21,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336030536] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:21,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341358817] [2021-06-05 06:44:21,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:21,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:44:21,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:21,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:21,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:21,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:21,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341358817] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:21,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:21,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:44:21,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848935153] [2021-06-05 06:44:21,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:21,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:21,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:21,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:21,984 INFO L87 Difference]: Start difference. First operand 1047 states and 3528 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:22,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:22,280 INFO L93 Difference]: Finished difference Result 1821 states and 5719 transitions. [2021-06-05 06:44:22,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:44:22,281 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:22,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:22,283 INFO L225 Difference]: With dead ends: 1821 [2021-06-05 06:44:22,283 INFO L226 Difference]: Without dead ends: 1821 [2021-06-05 06:44:22,283 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 191.0ms TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:44:22,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2021-06-05 06:44:22,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1119. [2021-06-05 06:44:22,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.370304114490161) internal successors, (3768), 1118 states have internal predecessors, (3768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:22,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3768 transitions. [2021-06-05 06:44:22,300 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3768 transitions. Word has length 24 [2021-06-05 06:44:22,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:22,300 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3768 transitions. [2021-06-05 06:44:22,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:22,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3768 transitions. [2021-06-05 06:44:22,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:22,302 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:22,302 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:22,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:22,517 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:22,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:22,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1452268422, now seen corresponding path program 34 times [2021-06-05 06:44:22,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:22,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332603204] [2021-06-05 06:44:22,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:22,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:22,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332603204] [2021-06-05 06:44:22,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332603204] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:22,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367253453] [2021-06-05 06:44:22,546 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:22,569 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:22,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:22,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:22,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:22,628 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:22,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367253453] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:22,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:22,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:44:22,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635003346] [2021-06-05 06:44:22,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:22,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:22,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:22,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:22,629 INFO L87 Difference]: Start difference. First operand 1119 states and 3768 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:22,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:22,879 INFO L93 Difference]: Finished difference Result 1790 states and 5648 transitions. [2021-06-05 06:44:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 06:44:22,880 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:22,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:22,882 INFO L225 Difference]: With dead ends: 1790 [2021-06-05 06:44:22,882 INFO L226 Difference]: Without dead ends: 1786 [2021-06-05 06:44:22,882 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 161.5ms TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2021-06-05 06:44:22,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2021-06-05 06:44:22,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1119. [2021-06-05 06:44:22,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.368515205724508) internal successors, (3766), 1118 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:22,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3766 transitions. [2021-06-05 06:44:22,911 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3766 transitions. Word has length 24 [2021-06-05 06:44:22,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:22,911 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3766 transitions. [2021-06-05 06:44:22,911 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:22,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3766 transitions. [2021-06-05 06:44:22,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:44:22,913 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:22,913 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:23,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2021-06-05 06:44:23,114 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:23,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:23,114 INFO L82 PathProgramCache]: Analyzing trace with hash 184811244, now seen corresponding path program 35 times [2021-06-05 06:44:23,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:23,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363639658] [2021-06-05 06:44:23,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:23,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:23,147 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:23,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363639658] [2021-06-05 06:44:23,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363639658] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:23,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897874202] [2021-06-05 06:44:23,147 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:23,171 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:44:23,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:23,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:23,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:23,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897874202] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:23,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:23,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:44:23,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449767639] [2021-06-05 06:44:23,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:44:23,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:23,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:44:23,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:44:23,234 INFO L87 Difference]: Start difference. First operand 1119 states and 3766 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:23,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:23,376 INFO L93 Difference]: Finished difference Result 1649 states and 5332 transitions. [2021-06-05 06:44:23,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:44:23,377 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-06-05 06:44:23,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:23,378 INFO L225 Difference]: With dead ends: 1649 [2021-06-05 06:44:23,378 INFO L226 Difference]: Without dead ends: 1637 [2021-06-05 06:44:23,379 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 88.7ms TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:44:23,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-06-05 06:44:23,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1119. [2021-06-05 06:44:23,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 1118 states have (on average 3.3649373881932023) internal successors, (3762), 1118 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:23,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3762 transitions. [2021-06-05 06:44:23,394 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3762 transitions. Word has length 24 [2021-06-05 06:44:23,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:23,394 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3762 transitions. [2021-06-05 06:44:23,394 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:23,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3762 transitions. [2021-06-05 06:44:23,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:44:23,396 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:23,396 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:23,611 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:23,611 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:23,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:23,611 INFO L82 PathProgramCache]: Analyzing trace with hash -998684486, now seen corresponding path program 4 times [2021-06-05 06:44:23,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:23,612 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358882051] [2021-06-05 06:44:23,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:24,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:24,131 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:24,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358882051] [2021-06-05 06:44:24,131 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358882051] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:24,131 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117265927] [2021-06-05 06:44:24,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:24,155 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:24,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:24,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:44:24,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:24,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:24,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:44:24,534 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:24,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:24,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:44:24,539 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:24,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:24,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:44:24,549 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:24,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:24,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:44:24,554 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:24,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:24,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:44:24,561 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:24,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:24,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:24,567 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:24,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:24,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 06:44:24,573 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:24,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:24,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:44:24,579 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:24,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:24,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:44:24,586 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:24,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:24,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:24,593 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:24,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:24,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:44:24,599 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:24,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:24,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:24,605 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:24,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:24,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:44:24,611 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:24,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:24,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:44:24,617 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:24,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:24,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:24,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:24,621 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:24,700 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 06:44:24,702 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:44:24,702 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 06:44:24,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:24,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117265927] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:24,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:24,753 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:44:24,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748901763] [2021-06-05 06:44:24,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:44:24,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:24,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:44:24,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:44:24,754 INFO L87 Difference]: Start difference. First operand 1119 states and 3762 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:25,363 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2021-06-05 06:44:25,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:25,617 INFO L93 Difference]: Finished difference Result 1517 states and 4955 transitions. [2021-06-05 06:44:25,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:44:25,618 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:44:25,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:25,620 INFO L225 Difference]: With dead ends: 1517 [2021-06-05 06:44:25,620 INFO L226 Difference]: Without dead ends: 1502 [2021-06-05 06:44:25,620 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1235.8ms TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:44:25,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-06-05 06:44:25,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1141. [2021-06-05 06:44:25,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 1140 states have (on average 3.362280701754386) internal successors, (3833), 1140 states have internal predecessors, (3833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:25,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 3833 transitions. [2021-06-05 06:44:25,634 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 3833 transitions. Word has length 26 [2021-06-05 06:44:25,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:25,634 INFO L482 AbstractCegarLoop]: Abstraction has 1141 states and 3833 transitions. [2021-06-05 06:44:25,634 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:25,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 3833 transitions. [2021-06-05 06:44:25,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:44:25,636 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:25,636 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:25,843 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-06-05 06:44:25,843 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:25,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:25,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1267884794, now seen corresponding path program 5 times [2021-06-05 06:44:25,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:25,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766612565] [2021-06-05 06:44:25,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:26,519 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2021-06-05 06:44:26,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:26,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:26,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766612565] [2021-06-05 06:44:26,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766612565] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:26,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561001925] [2021-06-05 06:44:26,573 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:26,602 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:44:26,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:26,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:44:26,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:27,054 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2021-06-05 06:44:27,106 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_5, v_prenex_7], 3=[v_prenex_9, A]} [2021-06-05 06:44:27,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:27,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:27,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:27,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:27,115 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:27,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:27,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:27,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:44:27,120 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:27,232 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2021-06-05 06:44:27,232 INFO L628 ElimStorePlain]: treesize reduction 119, result has 50.4 percent of original size [2021-06-05 06:44:27,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:27,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:27,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:27,237 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:27,275 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:27,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:27,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-06-05 06:44:27,280 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:27,327 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:27,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:27,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:44:27,332 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:27,365 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:27,367 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:44:27,367 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 7 variables, input treesize:281, output treesize:56 [2021-06-05 06:44:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:27,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561001925] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:27,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:27,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:44:27,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652226086] [2021-06-05 06:44:27,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:44:27,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:27,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:44:27,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:44:27,422 INFO L87 Difference]: Start difference. First operand 1141 states and 3833 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:28,249 INFO L93 Difference]: Finished difference Result 1495 states and 4899 transitions. [2021-06-05 06:44:28,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:44:28,249 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:44:28,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:28,251 INFO L225 Difference]: With dead ends: 1495 [2021-06-05 06:44:28,251 INFO L226 Difference]: Without dead ends: 1480 [2021-06-05 06:44:28,251 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1471.8ms TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:44:28,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-06-05 06:44:28,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1150. [2021-06-05 06:44:28,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 1149 states have (on average 3.3568320278503045) internal successors, (3857), 1149 states have internal predecessors, (3857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:28,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 3857 transitions. [2021-06-05 06:44:28,266 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 3857 transitions. Word has length 26 [2021-06-05 06:44:28,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:28,266 INFO L482 AbstractCegarLoop]: Abstraction has 1150 states and 3857 transitions. [2021-06-05 06:44:28,266 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:28,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 3857 transitions. [2021-06-05 06:44:28,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:44:28,268 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:28,268 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:28,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:28,481 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:28,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:28,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1435653194, now seen corresponding path program 36 times [2021-06-05 06:44:28,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:28,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436795824] [2021-06-05 06:44:28,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:28,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:29,025 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:29,025 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:29,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436795824] [2021-06-05 06:44:29,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436795824] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:29,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983459584] [2021-06-05 06:44:29,026 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:29,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:44:29,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:29,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:44:29,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:29,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:44:29,598 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:29,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:44:29,620 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:29,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:44:29,630 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:29,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,637 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:44:29,638 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:29,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:44:29,646 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:29,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:44:29,654 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:29,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:44:29,662 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:29,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,668 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:44:29,671 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:29,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:44:29,679 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:29,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:44:29,687 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:29,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 06:44:29,697 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:29,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,701 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:44:29,705 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:29,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 06:44:29,714 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:29,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:44:29,721 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:29,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:29,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:29,726 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:44:29,727 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:29,750 INFO L628 ElimStorePlain]: treesize reduction 34, result has 44.3 percent of original size [2021-06-05 06:44:29,751 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:44:29,751 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 06:44:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:29,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983459584] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:29,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:29,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 06:44:29,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103095473] [2021-06-05 06:44:29,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:44:29,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:29,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:44:29,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:44:29,782 INFO L87 Difference]: Start difference. First operand 1150 states and 3857 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:31,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:31,206 INFO L93 Difference]: Finished difference Result 1607 states and 5192 transitions. [2021-06-05 06:44:31,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:44:31,206 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:44:31,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:31,208 INFO L225 Difference]: With dead ends: 1607 [2021-06-05 06:44:31,208 INFO L226 Difference]: Without dead ends: 1592 [2021-06-05 06:44:31,208 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1624.7ms TimeCoverageRelationStatistics Valid=211, Invalid=979, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:44:31,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2021-06-05 06:44:31,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1180. [2021-06-05 06:44:31,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 1179 states have (on average 3.340966921119593) internal successors, (3939), 1179 states have internal predecessors, (3939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:31,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 3939 transitions. [2021-06-05 06:44:31,222 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 3939 transitions. Word has length 26 [2021-06-05 06:44:31,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:31,222 INFO L482 AbstractCegarLoop]: Abstraction has 1180 states and 3939 transitions. [2021-06-05 06:44:31,222 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 3939 transitions. [2021-06-05 06:44:31,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:44:31,224 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:31,224 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:31,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-06-05 06:44:31,425 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:31,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:31,425 INFO L82 PathProgramCache]: Analyzing trace with hash -630606018, now seen corresponding path program 6 times [2021-06-05 06:44:31,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:31,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259651907] [2021-06-05 06:44:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:31,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:31,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259651907] [2021-06-05 06:44:31,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259651907] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:31,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678175596] [2021-06-05 06:44:31,844 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:31,868 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:44:31,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:31,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:44:31,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:32,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:32,132 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:44:32,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:44:32,132 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:32,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:32,140 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:44:32,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:44:32,141 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:32,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:32,151 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:32,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:44:32,153 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:32,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:32,162 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:44:32,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:44:32,163 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:32,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:32,174 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:32,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:44:32,182 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:32,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:32,193 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:32,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:44:32,195 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:32,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:32,203 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:44:32,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:32,204 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:32,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:32,212 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:44:32,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 06:44:32,213 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:32,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:32,223 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:32,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:44:32,227 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:32,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:32,238 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:32,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:44:32,239 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:32,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:32,248 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:44:32,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:44:32,249 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:32,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:32,256 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:44:32,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:32,257 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:32,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:32,267 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:44:32,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:44:32,269 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:32,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:32,281 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:44:32,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:44:32,282 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:32,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:32,293 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:44:32,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:44:32,295 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:32,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:32,301 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:44:32,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:44:32,301 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:32,369 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:32,371 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:44:32,371 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-05 06:44:32,564 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:32,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678175596] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:32,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:32,564 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:44:32,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360252944] [2021-06-05 06:44:32,565 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:44:32,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:32,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:44:32,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:44:32,565 INFO L87 Difference]: Start difference. First operand 1180 states and 3939 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:32,941 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2021-06-05 06:44:33,476 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 50 [2021-06-05 06:44:33,618 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2021-06-05 06:44:33,767 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2021-06-05 06:44:33,917 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 54 [2021-06-05 06:44:34,200 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2021-06-05 06:44:34,339 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 06:44:34,576 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 45 [2021-06-05 06:44:34,816 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 68 [2021-06-05 06:44:34,960 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2021-06-05 06:44:35,256 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-05 06:44:35,544 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2021-06-05 06:44:35,808 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 42 [2021-06-05 06:44:35,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:35,861 INFO L93 Difference]: Finished difference Result 1842 states and 5907 transitions. [2021-06-05 06:44:35,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:44:35,862 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:44:35,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:35,864 INFO L225 Difference]: With dead ends: 1842 [2021-06-05 06:44:35,864 INFO L226 Difference]: Without dead ends: 1827 [2021-06-05 06:44:35,865 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 3285.5ms TimeCoverageRelationStatistics Valid=290, Invalid=1602, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:44:35,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2021-06-05 06:44:35,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1198. [2021-06-05 06:44:35,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 1197 states have (on average 3.346700083542189) internal successors, (4006), 1197 states have internal predecessors, (4006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:35,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 4006 transitions. [2021-06-05 06:44:35,880 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 4006 transitions. Word has length 26 [2021-06-05 06:44:35,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:35,880 INFO L482 AbstractCegarLoop]: Abstraction has 1198 states and 4006 transitions. [2021-06-05 06:44:35,880 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:35,880 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 4006 transitions. [2021-06-05 06:44:35,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:44:35,882 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:35,882 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:36,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:36,082 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:36,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:36,083 INFO L82 PathProgramCache]: Analyzing trace with hash 919775546, now seen corresponding path program 37 times [2021-06-05 06:44:36,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:36,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820913153] [2021-06-05 06:44:36,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:36,477 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:36,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:36,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820913153] [2021-06-05 06:44:36,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820913153] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:36,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067066690] [2021-06-05 06:44:36,478 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:36,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:44:36,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:37,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-06-05 06:44:37,062 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2021-06-05 06:44:37,071 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,075 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:44:37,080 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:44:37,088 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:44:37,095 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2021-06-05 06:44:37,108 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2021-06-05 06:44:37,116 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:44:37,125 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:44:37,133 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 13 [2021-06-05 06:44:37,142 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:44:37,150 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2021-06-05 06:44:37,157 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:44:37,169 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 16 [2021-06-05 06:44:37,177 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2021-06-05 06:44:37,185 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:37,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:37,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2021-06-05 06:44:37,193 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:37,224 INFO L628 ElimStorePlain]: treesize reduction 38, result has 49.3 percent of original size [2021-06-05 06:44:37,225 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:44:37,225 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:793, output treesize:27 [2021-06-05 06:44:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:37,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067066690] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:37,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:37,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:44:37,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547903691] [2021-06-05 06:44:37,255 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:44:37,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:37,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:44:37,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:44:37,255 INFO L87 Difference]: Start difference. First operand 1198 states and 4006 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:37,606 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 40 [2021-06-05 06:44:38,345 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 44 [2021-06-05 06:44:38,491 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 56 [2021-06-05 06:44:38,666 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 44 [2021-06-05 06:44:38,801 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 47 [2021-06-05 06:44:39,231 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2021-06-05 06:44:39,657 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2021-06-05 06:44:39,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:39,777 INFO L93 Difference]: Finished difference Result 1797 states and 5747 transitions. [2021-06-05 06:44:39,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:44:39,778 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:44:39,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:39,780 INFO L225 Difference]: With dead ends: 1797 [2021-06-05 06:44:39,780 INFO L226 Difference]: Without dead ends: 1782 [2021-06-05 06:44:39,781 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 2584.7ms TimeCoverageRelationStatistics Valid=356, Invalid=1624, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 06:44:39,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2021-06-05 06:44:39,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1206. [2021-06-05 06:44:39,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1205 states have (on average 3.349377593360996) internal successors, (4036), 1205 states have internal predecessors, (4036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:39,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 4036 transitions. [2021-06-05 06:44:39,795 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 4036 transitions. Word has length 26 [2021-06-05 06:44:39,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:39,795 INFO L482 AbstractCegarLoop]: Abstraction has 1206 states and 4036 transitions. [2021-06-05 06:44:39,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:39,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 4036 transitions. [2021-06-05 06:44:39,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:44:39,797 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:39,797 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:39,997 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable254 [2021-06-05 06:44:39,997 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:39,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:39,997 INFO L82 PathProgramCache]: Analyzing trace with hash -56543298, now seen corresponding path program 38 times [2021-06-05 06:44:39,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:39,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400249737] [2021-06-05 06:44:39,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:40,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:40,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:40,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400249737] [2021-06-05 06:44:40,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400249737] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:40,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270645450] [2021-06-05 06:44:40,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:40,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:40,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:40,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 06:44:40,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:41,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:41,166 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-05 06:44:41,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 51 [2021-06-05 06:44:41,176 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:41,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:41,226 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-05 06:44:41,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 51 [2021-06-05 06:44:41,235 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:41,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:41,281 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 06:44:41,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 44 [2021-06-05 06:44:41,289 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:41,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:41,310 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:44:41,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:44:41,311 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:41,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:41,352 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 06:44:41,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 44 [2021-06-05 06:44:41,359 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:41,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:41,398 INFO L354 Elim1Store]: treesize reduction 21, result has 53.3 percent of original size [2021-06-05 06:44:41,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 42 [2021-06-05 06:44:41,414 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:41,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:41,434 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:44:41,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:44:41,435 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:41,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:41,484 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 06:44:41,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 55 [2021-06-05 06:44:41,493 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:41,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:41,516 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:44:41,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:44:41,516 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:41,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:41,559 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 06:44:41,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 44 [2021-06-05 06:44:41,564 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:41,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:41,606 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 06:44:41,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 44 [2021-06-05 06:44:41,613 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:41,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:41,635 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:44:41,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:44:41,636 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:41,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:41,656 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:44:41,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 06:44:41,657 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:41,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:41,675 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:44:41,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:44:41,676 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:41,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:41,720 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 06:44:41,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 49 [2021-06-05 06:44:41,746 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:41,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:41,759 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:44:41,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:44:41,760 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:42,051 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2021-06-05 06:44:42,052 INFO L628 ElimStorePlain]: treesize reduction 109, result has 76.9 percent of original size [2021-06-05 06:44:42,060 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:44:42,060 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:993, output treesize:437 [2021-06-05 06:44:42,308 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2021-06-05 06:44:42,465 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2021-06-05 06:44:42,497 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:42,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270645450] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:42,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:42,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 22 [2021-06-05 06:44:42,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123457954] [2021-06-05 06:44:42,498 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 06:44:42,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:42,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 06:44:42,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2021-06-05 06:44:42,498 INFO L87 Difference]: Start difference. First operand 1206 states and 4036 transitions. Second operand has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:44,050 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 59 [2021-06-05 06:44:44,188 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 06:44:44,363 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2021-06-05 06:44:44,793 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-06-05 06:44:45,298 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-06-05 06:44:45,645 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2021-06-05 06:44:45,791 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2021-06-05 06:44:45,942 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2021-06-05 06:44:46,326 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 67 [2021-06-05 06:44:46,671 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 68 [2021-06-05 06:44:46,864 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 46 [2021-06-05 06:44:47,107 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-06-05 06:44:47,315 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2021-06-05 06:44:47,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:47,547 INFO L93 Difference]: Finished difference Result 2305 states and 7128 transitions. [2021-06-05 06:44:47,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 06:44:47,547 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:44:47,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:47,550 INFO L225 Difference]: With dead ends: 2305 [2021-06-05 06:44:47,550 INFO L226 Difference]: Without dead ends: 2260 [2021-06-05 06:44:47,551 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 5392.8ms TimeCoverageRelationStatistics Valid=600, Invalid=2940, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:44:47,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2021-06-05 06:44:47,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 1349. [2021-06-05 06:44:47,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1348 states have (on average 3.306379821958457) internal successors, (4457), 1348 states have internal predecessors, (4457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:47,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 4457 transitions. [2021-06-05 06:44:47,569 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 4457 transitions. Word has length 26 [2021-06-05 06:44:47,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:47,569 INFO L482 AbstractCegarLoop]: Abstraction has 1349 states and 4457 transitions. [2021-06-05 06:44:47,569 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 22 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:47,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 4457 transitions. [2021-06-05 06:44:47,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:44:47,571 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:47,571 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:47,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350,45 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:47,772 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:47,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:47,772 INFO L82 PathProgramCache]: Analyzing trace with hash -2141610526, now seen corresponding path program 7 times [2021-06-05 06:44:47,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:47,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435277633] [2021-06-05 06:44:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:47,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:48,196 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:48,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:48,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435277633] [2021-06-05 06:44:48,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435277633] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:48,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857846050] [2021-06-05 06:44:48,196 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:48,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:44:48,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:48,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:44:48,564 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:44:48,569 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:44:48,575 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:44:48,580 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:44:48,586 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:44:48,592 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:44:48,597 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:48,612 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:48,618 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:44:48,624 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:44:48,629 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:48,634 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:48,640 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 06:44:48,645 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:48,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:48,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:44:48,649 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:48,718 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 06:44:48,720 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:44:48,720 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 06:44:48,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:48,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857846050] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:48,768 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:48,768 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:44:48,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797930819] [2021-06-05 06:44:48,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:44:48,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:48,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:44:48,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:44:48,769 INFO L87 Difference]: Start difference. First operand 1349 states and 4457 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:49,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:49,716 INFO L93 Difference]: Finished difference Result 1744 states and 5646 transitions. [2021-06-05 06:44:49,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 06:44:49,716 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:44:49,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:49,718 INFO L225 Difference]: With dead ends: 1744 [2021-06-05 06:44:49,718 INFO L226 Difference]: Without dead ends: 1729 [2021-06-05 06:44:49,719 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1213.0ms TimeCoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:44:49,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2021-06-05 06:44:49,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1360. [2021-06-05 06:44:49,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1359 states have (on average 3.3038999264164826) internal successors, (4490), 1359 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:49,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 4490 transitions. [2021-06-05 06:44:49,736 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 4490 transitions. Word has length 26 [2021-06-05 06:44:49,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:49,736 INFO L482 AbstractCegarLoop]: Abstraction has 1360 states and 4490 transitions. [2021-06-05 06:44:49,736 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:49,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 4490 transitions. [2021-06-05 06:44:49,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:44:49,738 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:49,738 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:49,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable486 [2021-06-05 06:44:49,949 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:49,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:49,950 INFO L82 PathProgramCache]: Analyzing trace with hash 124958754, now seen corresponding path program 8 times [2021-06-05 06:44:49,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:49,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001906979] [2021-06-05 06:44:49,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:50,541 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2021-06-05 06:44:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:50,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:50,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001906979] [2021-06-05 06:44:50,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001906979] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:50,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845268686] [2021-06-05 06:44:50,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:50,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:50,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:50,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:44:50,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:50,925 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-06-05 06:44:51,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:51,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:51,068 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-06-05 06:44:51,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:44:51,068 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:51,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:51,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:51,094 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:44:51,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 30 [2021-06-05 06:44:51,096 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:51,461 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 130 [2021-06-05 06:44:51,462 INFO L628 ElimStorePlain]: treesize reduction 403, result has 46.9 percent of original size [2021-06-05 06:44:51,479 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:51,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:44:51,484 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:51,607 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-05 06:44:51,607 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:51,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:51,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:51,627 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:51,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 37 [2021-06-05 06:44:51,630 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:51,782 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-06-05 06:44:51,783 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:51,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:51,805 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:44:51,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30 [2021-06-05 06:44:51,817 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:51,940 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-05 06:44:51,941 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:51,961 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:44:51,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:44:51,962 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:52,082 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-05 06:44:52,083 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:52,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:52,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:52,101 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 06:44:52,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 06:44:52,102 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:52,216 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 06:44:52,217 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:52,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:52,232 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:52,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-06-05 06:44:52,233 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:52,355 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-05 06:44:52,355 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:52,372 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:44:52,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:44:52,376 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:52,501 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-06-05 06:44:52,501 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:44:52,518 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:44:52,518 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 16 variables, input treesize:825, output treesize:551 [2021-06-05 06:44:52,781 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-06-05 06:44:52,975 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-06-05 06:44:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:53,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845268686] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:53,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:53,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:44:53,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552233234] [2021-06-05 06:44:53,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:44:53,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:53,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:44:53,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:44:53,079 INFO L87 Difference]: Start difference. First operand 1360 states and 4490 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:54,008 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2021-06-05 06:44:54,368 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 60 [2021-06-05 06:44:54,608 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 46 [2021-06-05 06:44:54,923 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 59 [2021-06-05 06:44:55,262 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-05 06:44:55,731 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2021-06-05 06:44:56,138 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2021-06-05 06:44:56,491 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2021-06-05 06:44:56,634 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-06-05 06:44:56,887 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2021-06-05 06:44:57,214 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 06:44:57,631 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 56 [2021-06-05 06:44:57,851 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 43 [2021-06-05 06:44:58,340 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2021-06-05 06:44:58,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:58,423 INFO L93 Difference]: Finished difference Result 2016 states and 6372 transitions. [2021-06-05 06:44:58,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:44:58,424 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:44:58,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:58,427 INFO L225 Difference]: With dead ends: 2016 [2021-06-05 06:44:58,427 INFO L226 Difference]: Without dead ends: 2001 [2021-06-05 06:44:58,427 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 569 ImplicationChecksByTransitivity, 5833.7ms TimeCoverageRelationStatistics Valid=329, Invalid=1833, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 06:44:58,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states. [2021-06-05 06:44:58,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 1371. [2021-06-05 06:44:58,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 1370 states have (on average 3.3124087591240876) internal successors, (4538), 1370 states have internal predecessors, (4538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:58,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 4538 transitions. [2021-06-05 06:44:58,448 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 4538 transitions. Word has length 26 [2021-06-05 06:44:58,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:58,448 INFO L482 AbstractCegarLoop]: Abstraction has 1371 states and 4538 transitions. [2021-06-05 06:44:58,448 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:58,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 4538 transitions. [2021-06-05 06:44:58,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:44:58,450 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:58,450 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:44:58,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable518 [2021-06-05 06:44:58,661 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:58,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:58,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1812450954, now seen corresponding path program 9 times [2021-06-05 06:44:58,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:58,661 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26229166] [2021-06-05 06:44:58,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:59,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:59,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:59,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26229166] [2021-06-05 06:44:59,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26229166] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:59,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989955536] [2021-06-05 06:44:59,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:59,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:44:59,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:59,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:44:59,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:59,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:59,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:44:59,399 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:59,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:59,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:44:59,405 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:59,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:59,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:44:59,411 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:59,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:59,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:59,417 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:59,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:59,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:59,424 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:59,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:59,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:44:59,430 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:59,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:59,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:44:59,437 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:59,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:59,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:44:59,443 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:59,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:59,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:59,458 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:59,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:59,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:44:59,464 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:59,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:59,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:44:59,470 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:59,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:59,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:44:59,476 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:59,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:59,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 06:44:59,482 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:59,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:59,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:44:59,487 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:59,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:44:59,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:44:59,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:44:59,491 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:44:59,560 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 06:44:59,561 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:44:59,562 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 06:44:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:44:59,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989955536] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:59,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:59,608 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:44:59,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974914275] [2021-06-05 06:44:59,608 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:44:59,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:59,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:44:59,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:44:59,609 INFO L87 Difference]: Start difference. First operand 1371 states and 4538 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:00,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:00,845 INFO L93 Difference]: Finished difference Result 1859 states and 6002 transitions. [2021-06-05 06:45:00,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:45:00,847 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:45:00,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:00,850 INFO L225 Difference]: With dead ends: 1859 [2021-06-05 06:45:00,850 INFO L226 Difference]: Without dead ends: 1844 [2021-06-05 06:45:00,850 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1406.2ms TimeCoverageRelationStatistics Valid=202, Invalid=790, Unknown=0, NotChecked=0, Total=992 [2021-06-05 06:45:00,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2021-06-05 06:45:00,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1380. [2021-06-05 06:45:00,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.3168963016678754) internal successors, (4574), 1379 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:00,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4574 transitions. [2021-06-05 06:45:00,866 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4574 transitions. Word has length 26 [2021-06-05 06:45:00,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:00,866 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 4574 transitions. [2021-06-05 06:45:00,866 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:00,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4574 transitions. [2021-06-05 06:45:00,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:45:00,868 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:00,868 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:01,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable567,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:01,069 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:01,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:01,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1980260046, now seen corresponding path program 10 times [2021-06-05 06:45:01,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:01,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265498115] [2021-06-05 06:45:01,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:01,516 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:01,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:01,516 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265498115] [2021-06-05 06:45:01,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265498115] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:01,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106907890] [2021-06-05 06:45:01,517 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:01,540 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:45:01,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:01,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:45:01,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:01,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:01,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:45:01,904 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:01,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:01,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:45:01,910 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:01,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:01,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:01,917 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:01,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:01,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:45:01,923 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:01,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:01,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:45:01,931 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:01,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:01,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:45:01,936 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:01,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:01,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:45:01,941 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:01,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:01,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:01,947 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:01,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:01,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:45:01,953 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:01,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:01,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:01,959 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:01,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:01,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:45:01,971 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:01,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:01,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:45:01,977 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:01,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:01,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:45:01,982 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:01,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:01,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:01,992 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:01,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:01,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:01,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 06:45:01,996 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:02,082 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 06:45:02,084 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:45:02,084 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 06:45:02,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:02,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106907890] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:02,139 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:02,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:45:02,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465617722] [2021-06-05 06:45:02,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:45:02,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:02,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:45:02,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:45:02,140 INFO L87 Difference]: Start difference. First operand 1380 states and 4574 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:02,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:02,790 INFO L93 Difference]: Finished difference Result 1722 states and 5631 transitions. [2021-06-05 06:45:02,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:45:02,791 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:45:02,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:02,793 INFO L225 Difference]: With dead ends: 1722 [2021-06-05 06:45:02,793 INFO L226 Difference]: Without dead ends: 1707 [2021-06-05 06:45:02,794 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1027.9ms TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:45:02,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-06-05 06:45:02,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1380. [2021-06-05 06:45:02,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.3168963016678754) internal successors, (4574), 1379 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:02,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4574 transitions. [2021-06-05 06:45:02,813 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4574 transitions. Word has length 26 [2021-06-05 06:45:02,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:02,813 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 4574 transitions. [2021-06-05 06:45:02,813 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:02,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4574 transitions. [2021-06-05 06:45:02,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:45:02,815 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:02,815 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:03,015 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable599 [2021-06-05 06:45:03,016 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:03,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:03,016 INFO L82 PathProgramCache]: Analyzing trace with hash 247191222, now seen corresponding path program 11 times [2021-06-05 06:45:03,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:03,016 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708136308] [2021-06-05 06:45:03,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:03,452 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:03,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708136308] [2021-06-05 06:45:03,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708136308] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:03,452 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599387565] [2021-06-05 06:45:03,452 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:03,486 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:45:03,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:03,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:45:03,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:03,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:03,872 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:45:03,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:45:03,874 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:03,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:03,881 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:03,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:45:03,882 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:03,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:03,893 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:45:03,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:45:03,894 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:03,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:03,903 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:03,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:03,904 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:03,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:03,911 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:03,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:03,912 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:03,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:03,922 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:03,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:45:03,924 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:03,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:03,935 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:03,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:45:03,937 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:03,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:03,950 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:03,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:45:03,955 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:03,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:03,972 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:03,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:45:03,973 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:03,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:03,985 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:03,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:45:03,989 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:03,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:04,000 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:04,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:45:04,000 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:04,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:04,009 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:04,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:45:04,010 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:04,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:04,022 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:45:04,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:45:04,023 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:04,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:04,035 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:04,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:45:04,036 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:04,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:04,045 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:04,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 06:45:04,045 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:04,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:04,051 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:04,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:45:04,052 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:04,129 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:04,135 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:45:04,135 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:657, output treesize:174 [2021-06-05 06:45:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:04,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599387565] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:04,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:04,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:45:04,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791244631] [2021-06-05 06:45:04,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:45:04,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:04,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:45:04,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:45:04,318 INFO L87 Difference]: Start difference. First operand 1380 states and 4574 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:04,770 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 39 [2021-06-05 06:45:05,436 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 49 [2021-06-05 06:45:05,591 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-06-05 06:45:05,869 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 50 [2021-06-05 06:45:06,768 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2021-06-05 06:45:07,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:07,058 INFO L93 Difference]: Finished difference Result 2174 states and 6962 transitions. [2021-06-05 06:45:07,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:45:07,059 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:45:07,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:07,062 INFO L225 Difference]: With dead ends: 2174 [2021-06-05 06:45:07,062 INFO L226 Difference]: Without dead ends: 2144 [2021-06-05 06:45:07,063 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 2801.8ms TimeCoverageRelationStatistics Valid=323, Invalid=1569, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:45:07,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2021-06-05 06:45:07,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 1380. [2021-06-05 06:45:07,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.3168963016678754) internal successors, (4574), 1379 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:07,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4574 transitions. [2021-06-05 06:45:07,084 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4574 transitions. Word has length 26 [2021-06-05 06:45:07,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:07,084 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 4574 transitions. [2021-06-05 06:45:07,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:07,084 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4574 transitions. [2021-06-05 06:45:07,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:45:07,086 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:07,086 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:07,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable631 [2021-06-05 06:45:07,297 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:07,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:07,297 INFO L82 PathProgramCache]: Analyzing trace with hash 317421942, now seen corresponding path program 12 times [2021-06-05 06:45:07,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:07,297 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419124588] [2021-06-05 06:45:07,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:07,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:07,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419124588] [2021-06-05 06:45:07,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419124588] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:07,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440127408] [2021-06-05 06:45:07,822 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:07,845 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:45:07,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:07,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:45:07,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:08,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:08,076 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:08,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:45:08,077 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:08,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:08,084 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:08,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:45:08,085 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:08,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:08,094 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:08,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:45:08,097 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:08,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:08,106 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:08,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:45:08,107 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:08,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:08,117 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:08,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:45:08,120 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:08,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:08,130 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:08,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:45:08,132 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:08,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:08,139 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:08,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:08,140 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:08,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:08,155 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:08,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 06:45:08,156 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:08,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:08,167 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:08,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:45:08,172 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:08,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:08,184 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:08,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:45:08,186 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:08,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:08,195 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:08,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:45:08,196 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:08,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:08,204 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:08,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:08,205 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:08,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:08,216 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:45:08,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:45:08,218 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:08,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:08,228 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:45:08,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:45:08,230 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:08,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:08,240 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:45:08,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:45:08,245 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:08,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:08,252 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:08,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:45:08,252 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:08,320 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:08,322 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:45:08,322 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-05 06:45:08,520 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:08,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440127408] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:08,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:08,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:45:08,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312341950] [2021-06-05 06:45:08,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:45:08,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:08,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:45:08,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:45:08,521 INFO L87 Difference]: Start difference. First operand 1380 states and 4574 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:08,973 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2021-06-05 06:45:09,369 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2021-06-05 06:45:09,691 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 48 [2021-06-05 06:45:10,145 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2021-06-05 06:45:10,508 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 61 [2021-06-05 06:45:10,649 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2021-06-05 06:45:11,211 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2021-06-05 06:45:11,432 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 42 [2021-06-05 06:45:11,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:11,484 INFO L93 Difference]: Finished difference Result 1982 states and 6430 transitions. [2021-06-05 06:45:11,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 06:45:11,485 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:45:11,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:11,487 INFO L225 Difference]: With dead ends: 1982 [2021-06-05 06:45:11,487 INFO L226 Difference]: Without dead ends: 1967 [2021-06-05 06:45:11,488 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 3164.1ms TimeCoverageRelationStatistics Valid=326, Invalid=1480, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:45:11,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2021-06-05 06:45:11,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1380. [2021-06-05 06:45:11,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1380 states, 1379 states have (on average 3.3168963016678754) internal successors, (4574), 1379 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:11,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1380 states to 1380 states and 4574 transitions. [2021-06-05 06:45:11,505 INFO L78 Accepts]: Start accepts. Automaton has 1380 states and 4574 transitions. Word has length 26 [2021-06-05 06:45:11,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:11,505 INFO L482 AbstractCegarLoop]: Abstraction has 1380 states and 4574 transitions. [2021-06-05 06:45:11,506 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:11,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1380 states and 4574 transitions. [2021-06-05 06:45:11,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:45:11,507 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:11,507 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:11,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable672 [2021-06-05 06:45:11,712 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:11,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:11,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1219202938, now seen corresponding path program 39 times [2021-06-05 06:45:11,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:11,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041270223] [2021-06-05 06:45:11,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:12,210 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:12,211 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:12,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041270223] [2021-06-05 06:45:12,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041270223] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:12,211 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634533404] [2021-06-05 06:45:12,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:12,235 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:45:12,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:12,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:45:12,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:12,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:45:12,799 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:12,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 06:45:12,808 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:12,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:45:12,827 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:12,831 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:45:12,837 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:12,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:45:12,850 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:12,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:45:12,857 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:12,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,865 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:45:12,866 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:12,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:45:12,875 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:12,878 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,880 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:45:12,883 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:12,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:45:12,892 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:12,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 06:45:12,906 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:12,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:45:12,914 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:12,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:45:12,922 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:12,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:45:12,954 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:12,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:12,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:12,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:45:12,960 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:12,988 INFO L628 ElimStorePlain]: treesize reduction 18, result has 60.0 percent of original size [2021-06-05 06:45:12,989 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:45:12,989 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 06:45:13,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:13,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634533404] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:13,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:13,027 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 06:45:13,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783133225] [2021-06-05 06:45:13,027 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:45:13,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:13,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:45:13,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:45:13,033 INFO L87 Difference]: Start difference. First operand 1380 states and 4574 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:13,416 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2021-06-05 06:45:13,900 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 70 [2021-06-05 06:45:14,137 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2021-06-05 06:45:14,438 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 62 [2021-06-05 06:45:14,728 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2021-06-05 06:45:14,904 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2021-06-05 06:45:15,364 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 67 [2021-06-05 06:45:16,305 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-06-05 06:45:16,511 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2021-06-05 06:45:17,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:17,180 INFO L93 Difference]: Finished difference Result 3227 states and 9972 transitions. [2021-06-05 06:45:17,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:45:17,181 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:45:17,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:17,185 INFO L225 Difference]: With dead ends: 3227 [2021-06-05 06:45:17,185 INFO L226 Difference]: Without dead ends: 3182 [2021-06-05 06:45:17,186 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 4162.3ms TimeCoverageRelationStatistics Valid=669, Invalid=3363, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 06:45:17,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3182 states. [2021-06-05 06:45:17,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3182 to 1395. [2021-06-05 06:45:17,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 1394 states have (on average 3.33142037302726) internal successors, (4644), 1394 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:17,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 4644 transitions. [2021-06-05 06:45:17,208 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 4644 transitions. Word has length 26 [2021-06-05 06:45:17,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:17,208 INFO L482 AbstractCegarLoop]: Abstraction has 1395 states and 4644 transitions. [2021-06-05 06:45:17,209 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:17,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 4644 transitions. [2021-06-05 06:45:17,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:45:17,210 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:17,210 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:17,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable689 [2021-06-05 06:45:17,411 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:17,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:17,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1873451990, now seen corresponding path program 40 times [2021-06-05 06:45:17,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:17,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018583767] [2021-06-05 06:45:17,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:17,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:17,693 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2021-06-05 06:45:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:17,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:17,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018583767] [2021-06-05 06:45:17,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018583767] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:17,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476462371] [2021-06-05 06:45:17,926 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:17,950 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:45:17,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:17,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:45:17,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:18,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:18,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:45:18,463 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:18,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:18,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:45:18,470 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:18,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:18,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:45:18,477 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:18,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:18,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:45:18,485 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:18,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:18,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:45:18,493 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:18,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:18,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:45:18,499 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:18,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:18,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:45:18,507 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:18,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:18,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:45:18,513 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:18,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:18,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:45:18,529 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:18,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:18,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:45:18,537 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:18,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:18,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:45:18,545 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:18,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:18,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:45:18,552 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:18,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:18,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:45:18,560 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:18,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:18,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 06:45:18,566 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:18,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:18,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:18,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 06:45:18,571 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:18,598 INFO L628 ElimStorePlain]: treesize reduction 18, result has 60.0 percent of original size [2021-06-05 06:45:18,599 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:45:18,600 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 06:45:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:18,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476462371] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:18,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:18,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 06:45:18,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960233913] [2021-06-05 06:45:18,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:45:18,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:18,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:45:18,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:45:18,637 INFO L87 Difference]: Start difference. First operand 1395 states and 4644 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:19,155 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2021-06-05 06:45:19,591 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2021-06-05 06:45:19,739 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2021-06-05 06:45:20,008 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2021-06-05 06:45:20,339 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 62 [2021-06-05 06:45:20,793 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2021-06-05 06:45:21,224 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2021-06-05 06:45:22,103 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2021-06-05 06:45:22,276 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2021-06-05 06:45:22,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:22,513 INFO L93 Difference]: Finished difference Result 3009 states and 9476 transitions. [2021-06-05 06:45:22,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:45:22,513 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:45:22,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:22,524 INFO L225 Difference]: With dead ends: 3009 [2021-06-05 06:45:22,524 INFO L226 Difference]: Without dead ends: 2964 [2021-06-05 06:45:22,525 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 990 ImplicationChecksByTransitivity, 3838.4ms TimeCoverageRelationStatistics Valid=601, Invalid=2705, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 06:45:22,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2021-06-05 06:45:22,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1398. [2021-06-05 06:45:22,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1397 states have (on average 3.3335719398711525) internal successors, (4657), 1397 states have internal predecessors, (4657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:22,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 4657 transitions. [2021-06-05 06:45:22,546 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 4657 transitions. Word has length 26 [2021-06-05 06:45:22,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:22,547 INFO L482 AbstractCegarLoop]: Abstraction has 1398 states and 4657 transitions. [2021-06-05 06:45:22,547 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:22,547 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 4657 transitions. [2021-06-05 06:45:22,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:45:22,549 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:22,549 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:22,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable795 [2021-06-05 06:45:22,753 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:22,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:22,753 INFO L82 PathProgramCache]: Analyzing trace with hash -39803338, now seen corresponding path program 41 times [2021-06-05 06:45:22,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:22,753 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262064541] [2021-06-05 06:45:22,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:23,187 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:23,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:23,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262064541] [2021-06-05 06:45:23,187 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262064541] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:23,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892760411] [2021-06-05 06:45:23,187 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:23,213 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:45:23,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:23,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:45:23,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:23,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,681 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2021-06-05 06:45:23,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 34 [2021-06-05 06:45:23,686 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:23,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,713 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2021-06-05 06:45:23,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 37 [2021-06-05 06:45:23,717 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:23,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,745 INFO L354 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2021-06-05 06:45:23,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 25 [2021-06-05 06:45:23,746 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:23,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,774 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:23,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 45 [2021-06-05 06:45:23,786 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:23,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,814 INFO L354 Elim1Store]: treesize reduction 26, result has 21.2 percent of original size [2021-06-05 06:45:23,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 25 [2021-06-05 06:45:23,815 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:23,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,834 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:45:23,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 06:45:23,835 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:23,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,853 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:45:23,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:45:23,854 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:23,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,877 INFO L354 Elim1Store]: treesize reduction 18, result has 45.5 percent of original size [2021-06-05 06:45:23,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 30 [2021-06-05 06:45:23,880 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:23,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,915 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:45:23,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 1 [2021-06-05 06:45:23,916 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:23,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,934 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:45:23,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 06:45:23,935 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:23,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,961 INFO L354 Elim1Store]: treesize reduction 14, result has 57.6 percent of original size [2021-06-05 06:45:23,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 34 [2021-06-05 06:45:23,966 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:23,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,986 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:45:23,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 1 [2021-06-05 06:45:23,987 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:23,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:23,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:24,004 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:45:24,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 06:45:24,005 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:24,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:24,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:24,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:24,034 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:45:24,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 1 [2021-06-05 06:45:24,034 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:24,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:24,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:24,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:24,050 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:45:24,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:45:24,051 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:24,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:24,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:24,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:24,060 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-06-05 06:45:24,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 06:45:24,061 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:24,161 INFO L628 ElimStorePlain]: treesize reduction 66, result has 65.3 percent of original size [2021-06-05 06:45:24,163 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:45:24,163 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:841, output treesize:133 [2021-06-05 06:45:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:24,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892760411] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:24,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:24,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 06:45:24,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513472701] [2021-06-05 06:45:24,292 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:45:24,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:24,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:45:24,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:45:24,293 INFO L87 Difference]: Start difference. First operand 1398 states and 4657 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:24,692 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2021-06-05 06:45:24,887 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-06-05 06:45:25,017 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2021-06-05 06:45:25,363 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 58 [2021-06-05 06:45:25,525 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2021-06-05 06:45:26,113 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2021-06-05 06:45:26,629 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2021-06-05 06:45:26,929 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 55 [2021-06-05 06:45:27,113 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 60 [2021-06-05 06:45:27,461 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 49 [2021-06-05 06:45:27,700 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 48 [2021-06-05 06:45:27,833 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 43 [2021-06-05 06:45:28,075 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 50 [2021-06-05 06:45:28,285 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 42 [2021-06-05 06:45:28,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:28,934 INFO L93 Difference]: Finished difference Result 3194 states and 9881 transitions. [2021-06-05 06:45:28,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:45:28,934 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:45:28,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:28,938 INFO L225 Difference]: With dead ends: 3194 [2021-06-05 06:45:28,938 INFO L226 Difference]: Without dead ends: 3134 [2021-06-05 06:45:28,939 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1160 ImplicationChecksByTransitivity, 4445.8ms TimeCoverageRelationStatistics Valid=743, Invalid=3039, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:45:28,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2021-06-05 06:45:28,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 1411. [2021-06-05 06:45:28,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1410 states have (on average 3.3453900709219857) internal successors, (4717), 1410 states have internal predecessors, (4717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:28,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 4717 transitions. [2021-06-05 06:45:28,963 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 4717 transitions. Word has length 26 [2021-06-05 06:45:28,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:28,963 INFO L482 AbstractCegarLoop]: Abstraction has 1411 states and 4717 transitions. [2021-06-05 06:45:28,963 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:28,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 4717 transitions. [2021-06-05 06:45:28,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:45:28,965 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:28,965 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:29,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable891 [2021-06-05 06:45:29,166 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:29,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:29,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1882815202, now seen corresponding path program 13 times [2021-06-05 06:45:29,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:29,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109328673] [2021-06-05 06:45:29,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:29,526 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:29,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:29,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109328673] [2021-06-05 06:45:29,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109328673] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:29,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285142220] [2021-06-05 06:45:29,527 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:29,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:45:29,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:29,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:29,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 06:45:29,927 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:29,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:29,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:45:29,932 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:29,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:29,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:45:29,951 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:29,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:29,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:29,957 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:29,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:29,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:45:29,962 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:29,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:29,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:45:29,968 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:29,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:29,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:29,977 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:29,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:29,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:45:29,983 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:29,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:29,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:29,988 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:29,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:29,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:45:29,994 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:29,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:29,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:29,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:29,999 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:30,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:30,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:30,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:30,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:45:30,005 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:30,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:30,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:30,010 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:30,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:45:30,011 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:30,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:30,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:30,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:30,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:45:30,016 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:30,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:30,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:30,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:45:30,020 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:30,090 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 06:45:30,091 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:45:30,091 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 06:45:30,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:30,143 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285142220] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:30,143 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:30,143 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:45:30,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310903582] [2021-06-05 06:45:30,144 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:45:30,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:30,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:45:30,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:45:30,144 INFO L87 Difference]: Start difference. First operand 1411 states and 4717 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:30,912 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2021-06-05 06:45:31,271 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 50 [2021-06-05 06:45:31,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:31,906 INFO L93 Difference]: Finished difference Result 1958 states and 6368 transitions. [2021-06-05 06:45:31,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:45:31,907 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:45:31,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:31,909 INFO L225 Difference]: With dead ends: 1958 [2021-06-05 06:45:31,909 INFO L226 Difference]: Without dead ends: 1943 [2021-06-05 06:45:31,909 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1765.4ms TimeCoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:45:31,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2021-06-05 06:45:31,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 1455. [2021-06-05 06:45:31,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1454 states have (on average 3.343878954607978) internal successors, (4862), 1454 states have internal predecessors, (4862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:31,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 4862 transitions. [2021-06-05 06:45:31,933 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 4862 transitions. Word has length 26 [2021-06-05 06:45:31,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:31,933 INFO L482 AbstractCegarLoop]: Abstraction has 1455 states and 4862 transitions. [2021-06-05 06:45:31,933 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:31,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 4862 transitions. [2021-06-05 06:45:31,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:45:31,935 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:31,935 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:32,136 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable996 [2021-06-05 06:45:32,136 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:32,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:32,136 INFO L82 PathProgramCache]: Analyzing trace with hash 950706158, now seen corresponding path program 14 times [2021-06-05 06:45:32,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:32,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130374450] [2021-06-05 06:45:32,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:32,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:32,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130374450] [2021-06-05 06:45:32,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130374450] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:32,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512361795] [2021-06-05 06:45:32,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:32,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:45:32,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:32,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:45:32,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:32,818 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-06-05 06:45:32,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:32,900 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:45:32,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 33 [2021-06-05 06:45:32,905 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:33,038 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-06-05 06:45:33,038 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:33,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:33,059 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 06:45:33,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 29 [2021-06-05 06:45:33,061 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:33,188 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-06-05 06:45:33,188 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:33,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:33,218 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:33,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 34 [2021-06-05 06:45:33,223 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:33,346 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-06-05 06:45:33,346 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:33,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:33,366 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 06:45:33,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 30 [2021-06-05 06:45:33,367 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:33,489 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-05 06:45:33,490 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:33,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:33,510 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:45:33,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 34 [2021-06-05 06:45:33,514 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:33,635 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-06-05 06:45:33,635 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:33,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:33,652 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:33,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 41 [2021-06-05 06:45:33,654 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:33,774 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-06-05 06:45:33,775 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:33,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:33,795 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:45:33,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 36 [2021-06-05 06:45:33,796 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:33,913 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 06:45:33,913 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:33,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:33,929 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:33,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 43 treesize of output 41 [2021-06-05 06:45:33,930 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:34,047 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 06:45:34,047 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:34,061 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:45:34,061 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:445, output treesize:479 [2021-06-05 06:45:34,321 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2021-06-05 06:45:34,519 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2021-06-05 06:45:34,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:34,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512361795] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:34,604 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:34,604 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:45:34,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531904735] [2021-06-05 06:45:34,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:45:34,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:34,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:45:34,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:45:34,604 INFO L87 Difference]: Start difference. First operand 1455 states and 4862 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:35,408 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 36 [2021-06-05 06:45:35,588 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2021-06-05 06:45:35,892 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 44 [2021-06-05 06:45:36,375 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-05 06:45:36,829 WARN L205 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2021-06-05 06:45:37,031 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-06-05 06:45:37,297 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 47 [2021-06-05 06:45:37,622 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 06:45:37,972 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 48 [2021-06-05 06:45:38,204 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 41 [2021-06-05 06:45:38,694 WARN L205 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 70 [2021-06-05 06:45:38,901 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 33 [2021-06-05 06:45:38,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:38,975 INFO L93 Difference]: Finished difference Result 2081 states and 6658 transitions. [2021-06-05 06:45:38,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 06:45:38,975 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:45:38,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:38,978 INFO L225 Difference]: With dead ends: 2081 [2021-06-05 06:45:38,978 INFO L226 Difference]: Without dead ends: 2051 [2021-06-05 06:45:38,979 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 4677.4ms TimeCoverageRelationStatistics Valid=271, Invalid=1621, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:45:38,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2051 states. [2021-06-05 06:45:38,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2051 to 1451. [2021-06-05 06:45:38,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1450 states have (on average 3.3393103448275863) internal successors, (4842), 1450 states have internal predecessors, (4842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:39,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 4842 transitions. [2021-06-05 06:45:39,000 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 4842 transitions. Word has length 26 [2021-06-05 06:45:39,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:39,000 INFO L482 AbstractCegarLoop]: Abstraction has 1451 states and 4842 transitions. [2021-06-05 06:45:39,000 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:39,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 4842 transitions. [2021-06-05 06:45:39,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:45:39,002 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:39,002 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:39,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1028,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:39,217 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:39,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:39,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1764992822, now seen corresponding path program 15 times [2021-06-05 06:45:39,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:39,217 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443984676] [2021-06-05 06:45:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:39,521 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:39,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443984676] [2021-06-05 06:45:39,521 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443984676] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:39,521 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377543257] [2021-06-05 06:45:39,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:39,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:45:39,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:39,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:45:39,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:39,874 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:45:39,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 06:45:39,874 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:39,888 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:39,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 06:45:39,889 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:39,898 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:45:39,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:45:39,898 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:39,919 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:45:39,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 06:45:39,923 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:39,936 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:45:39,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:39,937 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:39,946 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:45:39,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:39,947 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:39,962 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:39,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 06:45:39,965 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:39,974 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:45:39,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:45:39,974 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:39,991 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:45:39,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:45:39,993 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:40,011 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:40,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:45:40,015 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:40,024 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:45:40,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:45:40,025 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:40,043 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:45:40,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:45:40,047 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:40,063 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:45:40,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:45:40,064 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:40,073 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:45:40,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:45:40,074 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:40,091 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:45:40,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:45:40,092 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:40,099 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:45:40,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:45:40,100 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:40,205 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-06-05 06:45:40,206 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:40,219 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:45:40,219 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:769, output treesize:357 [2021-06-05 06:45:40,431 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-06-05 06:45:40,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:40,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377543257] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:40,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:40,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-05 06:45:40,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861638218] [2021-06-05 06:45:40,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:45:40,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:40,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:45:40,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:45:40,543 INFO L87 Difference]: Start difference. First operand 1451 states and 4842 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:41,105 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 45 [2021-06-05 06:45:41,575 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2021-06-05 06:45:41,845 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 66 [2021-06-05 06:45:42,145 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 67 [2021-06-05 06:45:43,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:43,066 INFO L93 Difference]: Finished difference Result 2000 states and 6458 transitions. [2021-06-05 06:45:43,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:45:43,066 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:45:43,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:43,068 INFO L225 Difference]: With dead ends: 2000 [2021-06-05 06:45:43,068 INFO L226 Difference]: Without dead ends: 1985 [2021-06-05 06:45:43,069 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 2563.1ms TimeCoverageRelationStatistics Valid=225, Invalid=1335, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 06:45:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2021-06-05 06:45:43,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1452. [2021-06-05 06:45:43,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1451 states have (on average 3.3418332184700206) internal successors, (4849), 1451 states have internal predecessors, (4849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:43,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 4849 transitions. [2021-06-05 06:45:43,085 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 4849 transitions. Word has length 26 [2021-06-05 06:45:43,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:43,085 INFO L482 AbstractCegarLoop]: Abstraction has 1452 states and 4849 transitions. [2021-06-05 06:45:43,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:43,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 4849 transitions. [2021-06-05 06:45:43,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:45:43,087 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:43,087 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:43,297 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1054,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:43,297 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:43,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:43,298 INFO L82 PathProgramCache]: Analyzing trace with hash 505986546, now seen corresponding path program 16 times [2021-06-05 06:45:43,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:43,298 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597014178] [2021-06-05 06:45:43,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:43,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:43,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:43,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:43,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597014178] [2021-06-05 06:45:43,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597014178] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:43,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32960883] [2021-06-05 06:45:43,644 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:43,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:45:43,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:43,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:45:43,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:43,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:43,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:43,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:43,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:43,921 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:43,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:45:43,921 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:43,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:43,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:43,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:43,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:43,933 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:43,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 27 [2021-06-05 06:45:43,934 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:43,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:43,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:43,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:43,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:43,946 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:43,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 24 [2021-06-05 06:45:43,950 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:43,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:43,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:43,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:43,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:43,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:43,961 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:43,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:45:43,962 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:43,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:43,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:43,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:43,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:43,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:43,976 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:45:43,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 17 [2021-06-05 06:45:43,978 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:43,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:43,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:43,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:43,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:43,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:43,991 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:43,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2021-06-05 06:45:43,995 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:43,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:43,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:44,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:44,007 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:44,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:45:44,007 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:44,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:44,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:44,018 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:44,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:45:44,018 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:44,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:44,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:44,036 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:44,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:45:44,037 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:44,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:44,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:44,052 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:44,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2021-06-05 06:45:44,054 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:44,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:44,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:44,069 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:45:44,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 20 [2021-06-05 06:45:44,070 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:44,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:44,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:44,081 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:44,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:45:44,082 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:44,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:44,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:44,096 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:45:44,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 17 [2021-06-05 06:45:44,097 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:44,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:44,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:44,109 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:44,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:45:44,110 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:44,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:44,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:44,121 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:44,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 27 [2021-06-05 06:45:44,123 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:44,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:44,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:44,130 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:45:44,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:45:44,131 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:44,200 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:44,201 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:45:44,202 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:729, output treesize:181 [2021-06-05 06:45:44,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:44,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32960883] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:44,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:44,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:45:44,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470489717] [2021-06-05 06:45:44,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:45:44,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:44,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:45:44,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:45:44,406 INFO L87 Difference]: Start difference. First operand 1452 states and 4849 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:45,148 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 43 [2021-06-05 06:45:45,517 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2021-06-05 06:45:45,701 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 46 [2021-06-05 06:45:45,862 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2021-06-05 06:45:46,074 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2021-06-05 06:45:46,290 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2021-06-05 06:45:46,545 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 58 [2021-06-05 06:45:46,767 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2021-06-05 06:45:47,110 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2021-06-05 06:45:47,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:47,294 INFO L93 Difference]: Finished difference Result 2355 states and 7541 transitions. [2021-06-05 06:45:47,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:45:47,295 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:45:47,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:47,298 INFO L225 Difference]: With dead ends: 2355 [2021-06-05 06:45:47,298 INFO L226 Difference]: Without dead ends: 2325 [2021-06-05 06:45:47,298 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 3018.1ms TimeCoverageRelationStatistics Valid=270, Invalid=1290, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 06:45:47,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2325 states. [2021-06-05 06:45:47,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2325 to 1465. [2021-06-05 06:45:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1464 states have (on average 3.3490437158469946) internal successors, (4903), 1464 states have internal predecessors, (4903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:47,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 4903 transitions. [2021-06-05 06:45:47,319 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 4903 transitions. Word has length 26 [2021-06-05 06:45:47,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:47,319 INFO L482 AbstractCegarLoop]: Abstraction has 1465 states and 4903 transitions. [2021-06-05 06:45:47,319 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:47,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 4903 transitions. [2021-06-05 06:45:47,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:45:47,321 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:47,321 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:47,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1106,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:47,522 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:47,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:47,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1484642536, now seen corresponding path program 17 times [2021-06-05 06:45:47,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:47,522 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59937502] [2021-06-05 06:45:47,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:47,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:47,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:47,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59937502] [2021-06-05 06:45:47,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59937502] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:47,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829959306] [2021-06-05 06:45:47,818 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:47,853 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:45:47,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:47,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:45:47,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:48,199 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-06-05 06:45:48,387 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 49 [2021-06-05 06:45:48,477 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_46], 2=[A, v_prenex_45]} [2021-06-05 06:45:48,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:48,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:45:48,481 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:48,584 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2021-06-05 06:45:48,585 INFO L628 ElimStorePlain]: treesize reduction 54, result has 69.8 percent of original size [2021-06-05 06:45:48,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:48,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:48,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:48,589 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:48,643 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:48,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:48,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:48,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:48,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:48,650 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:48,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:48,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:48,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:45:48,655 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:48,694 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:48,696 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:45:48,696 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:193, output treesize:51 [2021-06-05 06:45:48,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:48,753 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829959306] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:48,753 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:48,754 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:45:48,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355140891] [2021-06-05 06:45:48,754 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:45:48,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:48,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:45:48,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:45:48,754 INFO L87 Difference]: Start difference. First operand 1465 states and 4903 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:49,793 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2021-06-05 06:45:50,143 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-06-05 06:45:50,509 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2021-06-05 06:45:50,709 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2021-06-05 06:45:50,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:50,901 INFO L93 Difference]: Finished difference Result 2028 states and 6589 transitions. [2021-06-05 06:45:50,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:45:50,901 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:45:50,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:50,904 INFO L225 Difference]: With dead ends: 2028 [2021-06-05 06:45:50,904 INFO L226 Difference]: Without dead ends: 1998 [2021-06-05 06:45:50,904 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 2380.1ms TimeCoverageRelationStatistics Valid=235, Invalid=1171, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 06:45:50,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2021-06-05 06:45:50,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1468. [2021-06-05 06:45:50,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.3503749147920927) internal successors, (4915), 1467 states have internal predecessors, (4915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:50,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 4915 transitions. [2021-06-05 06:45:50,925 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 4915 transitions. Word has length 26 [2021-06-05 06:45:50,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:50,925 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 4915 transitions. [2021-06-05 06:45:50,925 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:50,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 4915 transitions. [2021-06-05 06:45:50,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:45:50,928 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:50,928 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:51,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1131,59 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:51,128 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:51,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:51,129 INFO L82 PathProgramCache]: Analyzing trace with hash -808425550, now seen corresponding path program 18 times [2021-06-05 06:45:51,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:51,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126807194] [2021-06-05 06:45:51,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:51,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:51,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126807194] [2021-06-05 06:45:51,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126807194] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:51,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540721723] [2021-06-05 06:45:51,457 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:51,481 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:45:51,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:51,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:45:51,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:51,789 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-05 06:45:51,925 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_54, v_prenex_64, v_prenex_58], 6=[A, v_prenex_60, v_prenex_62, v_prenex_56, v_prenex_66]} [2021-06-05 06:45:51,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:51,939 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:51,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:45:51,941 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:52,259 WARN L205 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 130 [2021-06-05 06:45:52,259 INFO L628 ElimStorePlain]: treesize reduction 272, result has 55.1 percent of original size [2021-06-05 06:45:52,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:52,271 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:52,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:45:52,273 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:52,392 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-06-05 06:45:52,393 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:52,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:52,405 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:52,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:45:52,406 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:52,522 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-05 06:45:52,522 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:52,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:52,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:52,535 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:45:52,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19 [2021-06-05 06:45:52,537 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:52,641 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-05 06:45:52,641 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:52,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:52,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:52,652 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:52,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2021-06-05 06:45:52,656 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:52,757 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-06-05 06:45:52,757 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:52,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:52,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:52,769 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:45:52,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22 [2021-06-05 06:45:52,770 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:52,867 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:52,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:52,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:52,879 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:52,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 06:45:52,883 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:52,974 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:52,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:52,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:52,985 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:45:52,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-06-05 06:45:52,986 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:53,073 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:53,079 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:45:53,080 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:621, output treesize:217 [2021-06-05 06:45:53,238 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-06-05 06:45:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:53,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540721723] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:53,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:53,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:45:53,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470533794] [2021-06-05 06:45:53,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:45:53,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:53,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:45:53,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:45:53,326 INFO L87 Difference]: Start difference. First operand 1468 states and 4915 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:53,924 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2021-06-05 06:45:54,471 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-06-05 06:45:54,930 WARN L205 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-06-05 06:45:55,271 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2021-06-05 06:45:55,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:55,497 INFO L93 Difference]: Finished difference Result 1972 states and 6440 transitions. [2021-06-05 06:45:55,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:45:55,498 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:45:55,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:55,500 INFO L225 Difference]: With dead ends: 1972 [2021-06-05 06:45:55,500 INFO L226 Difference]: Without dead ends: 1957 [2021-06-05 06:45:55,500 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 2520.3ms TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:45:55,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2021-06-05 06:45:55,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1465. [2021-06-05 06:45:55,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1465 states, 1464 states have (on average 3.3490437158469946) internal successors, (4903), 1464 states have internal predecessors, (4903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:55,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1465 states to 1465 states and 4903 transitions. [2021-06-05 06:45:55,519 INFO L78 Accepts]: Start accepts. Automaton has 1465 states and 4903 transitions. Word has length 26 [2021-06-05 06:45:55,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:55,519 INFO L482 AbstractCegarLoop]: Abstraction has 1465 states and 4903 transitions. [2021-06-05 06:45:55,519 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:55,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1465 states and 4903 transitions. [2021-06-05 06:45:55,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:45:55,521 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:55,521 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:55,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1141,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:55,737 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:55,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:55,737 INFO L82 PathProgramCache]: Analyzing trace with hash -2091148486, now seen corresponding path program 19 times [2021-06-05 06:45:55,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:55,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399595961] [2021-06-05 06:45:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:56,135 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:56,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:56,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399595961] [2021-06-05 06:45:56,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399595961] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:56,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250610515] [2021-06-05 06:45:56,136 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:56,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:45:56,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:56,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:56,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:45:56,493 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:56,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:56,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:45:56,499 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:56,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:56,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:56,505 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:56,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:56,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:45:56,511 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:56,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:56,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:45:56,517 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:56,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:56,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:45:56,524 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:56,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:56,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:45:56,530 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:56,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:56,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:45:56,536 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:56,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:56,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:56,542 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:56,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:56,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:56,548 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:56,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:56,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:45:56,553 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:56,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:56,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 06:45:56,562 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:56,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:56,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:45:56,568 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:56,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:56,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:45:56,574 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:56,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:45:56,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:45:56,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:45:56,579 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:56,673 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 06:45:56,674 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:45:56,675 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 06:45:56,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:56,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250610515] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:56,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:56,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:45:56,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284586128] [2021-06-05 06:45:56,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:45:56,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:56,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:45:56,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:45:56,723 INFO L87 Difference]: Start difference. First operand 1465 states and 4903 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:57,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:57,588 INFO L93 Difference]: Finished difference Result 1916 states and 6261 transitions. [2021-06-05 06:45:57,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 06:45:57,592 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:45:57,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:57,595 INFO L225 Difference]: With dead ends: 1916 [2021-06-05 06:45:57,595 INFO L226 Difference]: Without dead ends: 1895 [2021-06-05 06:45:57,595 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1070.5ms TimeCoverageRelationStatistics Valid=159, Invalid=653, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:45:57,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2021-06-05 06:45:57,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1506. [2021-06-05 06:45:57,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 3.345514950166113) internal successors, (5035), 1505 states have internal predecessors, (5035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:57,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 5035 transitions. [2021-06-05 06:45:57,612 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 5035 transitions. Word has length 26 [2021-06-05 06:45:57,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:57,612 INFO L482 AbstractCegarLoop]: Abstraction has 1506 states and 5035 transitions. [2021-06-05 06:45:57,612 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:57,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 5035 transitions. [2021-06-05 06:45:57,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:45:57,614 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:57,614 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:45:57,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1166 [2021-06-05 06:45:57,815 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:57,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:57,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2036009718, now seen corresponding path program 20 times [2021-06-05 06:45:57,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:57,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104261357] [2021-06-05 06:45:57,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:58,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:58,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:58,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104261357] [2021-06-05 06:45:58,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104261357] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:58,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691601761] [2021-06-05 06:45:58,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:58,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:45:58,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:58,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:45:58,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:58,798 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-06-05 06:45:58,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 36 [2021-06-05 06:45:58,816 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:58,835 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:58,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43 [2021-06-05 06:45:58,838 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:59,277 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2021-06-05 06:45:59,278 INFO L628 ElimStorePlain]: treesize reduction 17, result has 95.3 percent of original size [2021-06-05 06:45:59,298 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:59,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 34 [2021-06-05 06:45:59,304 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:59,326 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-06-05 06:45:59,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 29 [2021-06-05 06:45:59,330 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:59,461 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 06:45:59,461 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:59,486 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-06-05 06:45:59,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 32 [2021-06-05 06:45:59,488 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:59,510 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-06-05 06:45:59,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 29 [2021-06-05 06:45:59,513 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:59,645 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-05 06:45:59,645 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:59,667 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-06-05 06:45:59,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 06:45:59,669 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:59,692 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-06-05 06:45:59,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 39 [2021-06-05 06:45:59,693 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:45:59,821 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-05 06:45:59,821 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:45:59,860 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:45:59,861 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:365, output treesize:746 [2021-06-05 06:46:00,290 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2021-06-05 06:46:00,560 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-06-05 06:46:00,674 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:00,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691601761] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:00,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:00,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2021-06-05 06:46:00,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222411379] [2021-06-05 06:46:00,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:46:00,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:00,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:46:00,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:46:00,675 INFO L87 Difference]: Start difference. First operand 1506 states and 5035 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:00,838 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 21 [2021-06-05 06:46:00,983 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 27 [2021-06-05 06:46:01,335 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 47 [2021-06-05 06:46:01,630 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 51 [2021-06-05 06:46:01,984 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 50 [2021-06-05 06:46:02,289 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 41 [2021-06-05 06:46:02,508 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 06:46:03,067 WARN L205 SmtUtils]: Spent 489.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 83 [2021-06-05 06:46:03,195 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2021-06-05 06:46:03,590 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 53 [2021-06-05 06:46:03,877 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2021-06-05 06:46:04,335 WARN L205 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 61 [2021-06-05 06:46:04,787 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-06-05 06:46:05,262 WARN L205 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2021-06-05 06:46:05,657 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 44 [2021-06-05 06:46:05,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:05,710 INFO L93 Difference]: Finished difference Result 2133 states and 6814 transitions. [2021-06-05 06:46:05,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:46:05,711 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:46:05,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:05,713 INFO L225 Difference]: With dead ends: 2133 [2021-06-05 06:46:05,713 INFO L226 Difference]: Without dead ends: 2108 [2021-06-05 06:46:05,713 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 5783.4ms TimeCoverageRelationStatistics Valid=320, Invalid=1486, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:46:05,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2021-06-05 06:46:05,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 1529. [2021-06-05 06:46:05,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1528 states have (on average 3.352094240837696) internal successors, (5122), 1528 states have internal predecessors, (5122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:05,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 5122 transitions. [2021-06-05 06:46:05,732 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 5122 transitions. Word has length 26 [2021-06-05 06:46:05,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:05,732 INFO L482 AbstractCegarLoop]: Abstraction has 1529 states and 5122 transitions. [2021-06-05 06:46:05,732 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:05,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 5122 transitions. [2021-06-05 06:46:05,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:46:05,734 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:05,734 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:05,938 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1198 [2021-06-05 06:46:05,938 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:05,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:05,938 INFO L82 PathProgramCache]: Analyzing trace with hash 2016041692, now seen corresponding path program 21 times [2021-06-05 06:46:05,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:05,939 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577467251] [2021-06-05 06:46:05,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:06,345 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:06,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:06,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577467251] [2021-06-05 06:46:06,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577467251] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:06,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162899759] [2021-06-05 06:46:06,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:06,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:46:06,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:06,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:46:06,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:06,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:06,678 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:06,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 06:46:06,679 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:06,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:06,687 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:06,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:46:06,687 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:06,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:06,697 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:06,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:46:06,703 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:06,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:06,716 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:06,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:46:06,720 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:06,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:06,729 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:06,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:46:06,730 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:06,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:06,737 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:06,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:46:06,738 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:06,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:06,748 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:46:06,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:46:06,753 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:06,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:06,762 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:06,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:46:06,762 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:06,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:06,770 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:06,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:46:06,771 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:06,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:06,781 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:06,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:46:06,782 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:06,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:06,793 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:06,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:46:06,793 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:06,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:06,804 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:06,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:46:06,806 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:06,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:06,820 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:46:06,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:46:06,821 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:06,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:06,832 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:46:06,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:46:06,834 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:06,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:06,844 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:06,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:46:06,845 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:06,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:06,861 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:06,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:46:06,862 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:06,946 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:06,951 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:46:06,951 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:657, output treesize:174 [2021-06-05 06:46:07,162 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:07,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162899759] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:07,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:07,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-05 06:46:07,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181489998] [2021-06-05 06:46:07,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:46:07,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:07,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:46:07,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:46:07,163 INFO L87 Difference]: Start difference. First operand 1529 states and 5122 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:08,208 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2021-06-05 06:46:08,388 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 52 [2021-06-05 06:46:08,642 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2021-06-05 06:46:09,080 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2021-06-05 06:46:09,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:09,133 INFO L93 Difference]: Finished difference Result 2011 states and 6582 transitions. [2021-06-05 06:46:09,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:46:09,133 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:46:09,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:09,136 INFO L225 Difference]: With dead ends: 2011 [2021-06-05 06:46:09,136 INFO L226 Difference]: Without dead ends: 1982 [2021-06-05 06:46:09,137 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 2176.8ms TimeCoverageRelationStatistics Valid=217, Invalid=905, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:46:09,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2021-06-05 06:46:09,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1532. [2021-06-05 06:46:09,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1531 states have (on average 3.3527106466361856) internal successors, (5133), 1531 states have internal predecessors, (5133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:09,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 5133 transitions. [2021-06-05 06:46:09,158 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 5133 transitions. Word has length 26 [2021-06-05 06:46:09,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:09,158 INFO L482 AbstractCegarLoop]: Abstraction has 1532 states and 5133 transitions. [2021-06-05 06:46:09,158 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:09,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 5133 transitions. [2021-06-05 06:46:09,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:46:09,160 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:09,160 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:09,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1278 [2021-06-05 06:46:09,376 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:09,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:09,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1960184130, now seen corresponding path program 22 times [2021-06-05 06:46:09,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:09,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333716202] [2021-06-05 06:46:09,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:09,762 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:09,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:09,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333716202] [2021-06-05 06:46:09,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333716202] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:09,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200766838] [2021-06-05 06:46:09,762 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:09,787 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:46:09,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:09,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:46:09,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:10,080 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2021-06-05 06:46:10,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:10,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:10,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:10,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:46:10,143 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:10,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:10,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:10,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:46:10,148 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:10,251 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2021-06-05 06:46:10,251 INFO L628 ElimStorePlain]: treesize reduction 91, result has 58.6 percent of original size [2021-06-05 06:46:10,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:10,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:46:10,255 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:10,299 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:10,299 INFO L518 ElimStorePlain]: Eliminatee v_prenex_87 vanished before elimination [2021-06-05 06:46:10,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:10,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:10,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:10,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:46:10,304 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:10,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:10,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:10,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:46:10,308 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:10,341 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:10,343 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:46:10,343 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:272, output treesize:51 [2021-06-05 06:46:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:10,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200766838] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:10,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:10,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:46:10,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060362300] [2021-06-05 06:46:10,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:46:10,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:10,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:46:10,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:46:10,397 INFO L87 Difference]: Start difference. First operand 1532 states and 5133 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:10,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:10,664 INFO L93 Difference]: Finished difference Result 1607 states and 5324 transitions. [2021-06-05 06:46:10,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 06:46:10,665 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:46:10,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:10,667 INFO L225 Difference]: With dead ends: 1607 [2021-06-05 06:46:10,667 INFO L226 Difference]: Without dead ends: 1592 [2021-06-05 06:46:10,667 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 707.3ms TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:46:10,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1592 states. [2021-06-05 06:46:10,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1592 to 1538. [2021-06-05 06:46:10,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 3.3545868575146387) internal successors, (5156), 1537 states have internal predecessors, (5156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:10,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 5156 transitions. [2021-06-05 06:46:10,691 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 5156 transitions. Word has length 26 [2021-06-05 06:46:10,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:10,691 INFO L482 AbstractCegarLoop]: Abstraction has 1538 states and 5156 transitions. [2021-06-05 06:46:10,691 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:10,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 5156 transitions. [2021-06-05 06:46:10,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:46:10,693 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:10,693 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:10,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1319,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:10,893 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:10,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:10,894 INFO L82 PathProgramCache]: Analyzing trace with hash -389358530, now seen corresponding path program 23 times [2021-06-05 06:46:10,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:10,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249702143] [2021-06-05 06:46:10,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:11,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:11,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:11,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249702143] [2021-06-05 06:46:11,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249702143] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:11,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963660043] [2021-06-05 06:46:11,208 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:11,234 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:46:11,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:11,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:46:11,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:11,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:11,652 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:11,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:46:11,656 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:11,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:11,672 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:46:11,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:46:11,674 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:11,814 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 06:46:11,814 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:11,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:11,836 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:46:11,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:46:11,837 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:11,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:11,856 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:46:11,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:46:11,862 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:11,993 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 06:46:11,994 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:12,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:12,010 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:12,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 06:46:12,014 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:12,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:12,032 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:46:12,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2021-06-05 06:46:12,033 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:12,281 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2021-06-05 06:46:12,281 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.9 percent of original size [2021-06-05 06:46:12,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:12,296 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:12,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2021-06-05 06:46:12,302 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:12,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:12,332 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:46:12,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:46:12,333 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:12,559 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-06-05 06:46:12,559 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.5 percent of original size [2021-06-05 06:46:12,577 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:46:12,577 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:349, output treesize:259 [2021-06-05 06:46:12,751 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 41 [2021-06-05 06:46:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:12,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963660043] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:12,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:12,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:46:12,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584423510] [2021-06-05 06:46:12,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:46:12,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:12,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:46:12,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:46:12,844 INFO L87 Difference]: Start difference. First operand 1538 states and 5156 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:13,684 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2021-06-05 06:46:14,377 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-06-05 06:46:14,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:14,428 INFO L93 Difference]: Finished difference Result 2227 states and 7222 transitions. [2021-06-05 06:46:14,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:46:14,428 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:46:14,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:14,431 INFO L225 Difference]: With dead ends: 2227 [2021-06-05 06:46:14,431 INFO L226 Difference]: Without dead ends: 2177 [2021-06-05 06:46:14,431 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1839.7ms TimeCoverageRelationStatistics Valid=232, Invalid=1028, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:46:14,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2021-06-05 06:46:14,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 1545. [2021-06-05 06:46:14,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1544 states have (on average 3.3588082901554404) internal successors, (5186), 1544 states have internal predecessors, (5186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:14,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 5186 transitions. [2021-06-05 06:46:14,456 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 5186 transitions. Word has length 26 [2021-06-05 06:46:14,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:14,456 INFO L482 AbstractCegarLoop]: Abstraction has 1545 states and 5186 transitions. [2021-06-05 06:46:14,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:14,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 5186 transitions. [2021-06-05 06:46:14,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:46:14,458 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:14,458 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:14,658 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1330 [2021-06-05 06:46:14,659 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:14,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:14,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1800748254, now seen corresponding path program 24 times [2021-06-05 06:46:14,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:14,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960598036] [2021-06-05 06:46:14,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:15,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:15,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:15,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960598036] [2021-06-05 06:46:15,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960598036] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:15,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100080309] [2021-06-05 06:46:15,075 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:15,098 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:46:15,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:15,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:46:15,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:15,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:15,306 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:15,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:46:15,307 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:15,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:15,315 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:15,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:46:15,316 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:15,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:15,325 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:15,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:46:15,327 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:15,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:15,338 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:15,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:46:15,339 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:15,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:15,348 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:15,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:46:15,351 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:15,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:15,361 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:15,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:46:15,362 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:15,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:15,372 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:15,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:46:15,373 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:15,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:15,381 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:15,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 06:46:15,381 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:15,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:15,390 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:15,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:46:15,394 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:15,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:15,404 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:15,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:46:15,405 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:15,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:15,413 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:15,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:46:15,414 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:15,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:15,421 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:15,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:46:15,422 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:15,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:15,432 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:46:15,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:46:15,433 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:15,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:15,443 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:46:15,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:46:15,444 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:15,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:15,453 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:46:15,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:46:15,454 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:15,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:15,459 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:15,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:46:15,460 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:15,525 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:15,526 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:46:15,526 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-05 06:46:15,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:15,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100080309] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:15,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:15,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:46:15,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509237581] [2021-06-05 06:46:15,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:46:15,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:15,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:46:15,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:46:15,709 INFO L87 Difference]: Start difference. First operand 1545 states and 5186 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:16,321 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2021-06-05 06:46:16,888 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2021-06-05 06:46:17,131 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-05 06:46:17,346 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-06-05 06:46:17,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:17,409 INFO L93 Difference]: Finished difference Result 2071 states and 6812 transitions. [2021-06-05 06:46:17,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:46:17,409 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:46:17,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:17,412 INFO L225 Difference]: With dead ends: 2071 [2021-06-05 06:46:17,412 INFO L226 Difference]: Without dead ends: 2052 [2021-06-05 06:46:17,412 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 1989.1ms TimeCoverageRelationStatistics Valid=191, Invalid=931, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:46:17,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2021-06-05 06:46:17,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 1557. [2021-06-05 06:46:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1556 states have (on average 3.3618251928020566) internal successors, (5231), 1556 states have internal predecessors, (5231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 5231 transitions. [2021-06-05 06:46:17,432 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 5231 transitions. Word has length 26 [2021-06-05 06:46:17,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:17,432 INFO L482 AbstractCegarLoop]: Abstraction has 1557 states and 5231 transitions. [2021-06-05 06:46:17,432 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:17,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 5231 transitions. [2021-06-05 06:46:17,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:46:17,434 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:17,434 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:17,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1386 [2021-06-05 06:46:17,635 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:17,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:17,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1506727430, now seen corresponding path program 25 times [2021-06-05 06:46:17,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:17,635 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671756960] [2021-06-05 06:46:17,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:18,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:18,043 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:18,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671756960] [2021-06-05 06:46:18,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671756960] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:18,043 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694187731] [2021-06-05 06:46:18,043 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:18,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:46:18,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:18,405 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2021-06-05 06:46:18,500 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_98], 3=[A, v_prenex_100], 6=[v_prenex_99]} [2021-06-05 06:46:18,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:18,513 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:18,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:46:18,514 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:18,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:18,524 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:18,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:46:18,526 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:18,659 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 06:46:18,660 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:18,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:18,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:18,673 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:18,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 06:46:18,674 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:18,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:18,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:18,685 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:46:18,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-06-05 06:46:18,686 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:18,813 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 06:46:18,813 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:18,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:18,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:18,825 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:46:18,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19 [2021-06-05 06:46:18,827 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:18,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:18,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:18,836 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:18,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2021-06-05 06:46:18,840 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:18,950 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 06:46:18,950 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:18,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:18,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:18,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:18,964 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:46:18,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22 [2021-06-05 06:46:18,965 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:18,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:18,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:18,982 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:18,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 06:46:18,985 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:19,083 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:19,092 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:46:19,092 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:375, output treesize:228 [2021-06-05 06:46:19,263 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2021-06-05 06:46:19,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:19,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694187731] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:19,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:19,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:46:19,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067083192] [2021-06-05 06:46:19,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:46:19,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:19,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:46:19,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:46:19,358 INFO L87 Difference]: Start difference. First operand 1557 states and 5231 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:19,890 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 33 [2021-06-05 06:46:20,153 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2021-06-05 06:46:20,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:20,663 INFO L93 Difference]: Finished difference Result 2052 states and 6751 transitions. [2021-06-05 06:46:20,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 06:46:20,663 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:46:20,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:20,666 INFO L225 Difference]: With dead ends: 2052 [2021-06-05 06:46:20,666 INFO L226 Difference]: Without dead ends: 2027 [2021-06-05 06:46:20,666 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1738.0ms TimeCoverageRelationStatistics Valid=161, Invalid=651, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:46:20,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2021-06-05 06:46:20,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1563. [2021-06-05 06:46:20,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1562 states have (on average 3.360435339308579) internal successors, (5249), 1562 states have internal predecessors, (5249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:20,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 5249 transitions. [2021-06-05 06:46:20,684 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 5249 transitions. Word has length 26 [2021-06-05 06:46:20,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:20,684 INFO L482 AbstractCegarLoop]: Abstraction has 1563 states and 5249 transitions. [2021-06-05 06:46:20,684 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:20,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 5249 transitions. [2021-06-05 06:46:20,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:46:20,686 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:20,686 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:20,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1403 [2021-06-05 06:46:20,886 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:20,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:20,887 INFO L82 PathProgramCache]: Analyzing trace with hash -132958662, now seen corresponding path program 42 times [2021-06-05 06:46:20,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:20,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632278727] [2021-06-05 06:46:20,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:21,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:21,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632278727] [2021-06-05 06:46:21,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632278727] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:21,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3913969] [2021-06-05 06:46:21,329 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:21,358 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:46:21,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:21,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-05 06:46:21,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:21,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 13 [2021-06-05 06:46:21,629 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:21,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-06-05 06:46:21,637 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:21,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:46:21,645 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:21,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2021-06-05 06:46:21,652 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:21,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:46:21,660 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:21,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2021-06-05 06:46:21,668 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:21,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2021-06-05 06:46:21,676 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:21,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16 [2021-06-05 06:46:21,684 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:21,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:46:21,692 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:21,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:46:21,698 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:21,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2021-06-05 06:46:21,706 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:21,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16 [2021-06-05 06:46:21,713 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:21,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-06-05 06:46:21,721 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:21,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,726 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2021-06-05 06:46:21,729 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:21,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,733 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2021-06-05 06:46:21,736 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:21,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:21,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:21,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:46:21,741 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:21,776 INFO L628 ElimStorePlain]: treesize reduction 21, result has 65.0 percent of original size [2021-06-05 06:46:21,777 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:46:21,777 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:809, output treesize:39 [2021-06-05 06:46:21,835 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:21,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3913969] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:21,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:21,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:46:21,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380545080] [2021-06-05 06:46:21,836 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:46:21,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:21,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:46:21,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:46:21,836 INFO L87 Difference]: Start difference. First operand 1563 states and 5249 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:22,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:22,781 INFO L93 Difference]: Finished difference Result 2040 states and 6673 transitions. [2021-06-05 06:46:22,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 06:46:22,781 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:46:22,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:22,784 INFO L225 Difference]: With dead ends: 2040 [2021-06-05 06:46:22,784 INFO L226 Difference]: Without dead ends: 2014 [2021-06-05 06:46:22,784 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1263.3ms TimeCoverageRelationStatistics Valid=231, Invalid=959, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:46:22,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2021-06-05 06:46:22,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 1579. [2021-06-05 06:46:22,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1578 states have (on average 3.3542458808618503) internal successors, (5293), 1578 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:22,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 5293 transitions. [2021-06-05 06:46:22,802 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 5293 transitions. Word has length 26 [2021-06-05 06:46:22,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:22,803 INFO L482 AbstractCegarLoop]: Abstraction has 1579 states and 5293 transitions. [2021-06-05 06:46:22,803 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:22,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 5293 transitions. [2021-06-05 06:46:22,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:46:22,804 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:22,805 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:23,005 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1436,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:23,005 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:23,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:23,005 INFO L82 PathProgramCache]: Analyzing trace with hash 934915902, now seen corresponding path program 43 times [2021-06-05 06:46:23,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:23,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294724580] [2021-06-05 06:46:23,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:23,418 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:23,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294724580] [2021-06-05 06:46:23,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294724580] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:23,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671876849] [2021-06-05 06:46:23,419 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:23,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:46:23,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:23,742 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_103], 5=[v_prenex_101, v_prenex_105]} [2021-06-05 06:46:23,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:23,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:23,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:23,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:23,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:46:23,750 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:23,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:23,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:23,755 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:23,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:46:23,756 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:23,832 INFO L628 ElimStorePlain]: treesize reduction 141, result has 40.8 percent of original size [2021-06-05 06:46:23,832 INFO L518 ElimStorePlain]: Eliminatee v_prenex_103 vanished before elimination [2021-06-05 06:46:23,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:23,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:23,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:23,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-05 06:46:23,837 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:23,863 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:23,865 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:23,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2021-06-05 06:46:23,866 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:23,889 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:23,891 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 06:46:23,891 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:294, output treesize:33 [2021-06-05 06:46:23,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:23,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671876849] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:23,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:23,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 06:46:23,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658474492] [2021-06-05 06:46:23,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:46:23,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:23,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:46:23,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:46:23,934 INFO L87 Difference]: Start difference. First operand 1579 states and 5293 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:26,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:26,340 INFO L93 Difference]: Finished difference Result 2239 states and 7310 transitions. [2021-06-05 06:46:26,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 06:46:26,340 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:46:26,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:26,343 INFO L225 Difference]: With dead ends: 2239 [2021-06-05 06:46:26,343 INFO L226 Difference]: Without dead ends: 2224 [2021-06-05 06:46:26,346 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 2601.4ms TimeCoverageRelationStatistics Valid=512, Invalid=2244, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 06:46:26,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2021-06-05 06:46:26,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 1579. [2021-06-05 06:46:26,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1578 states have (on average 3.3542458808618503) internal successors, (5293), 1578 states have internal predecessors, (5293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:26,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 5293 transitions. [2021-06-05 06:46:26,369 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 5293 transitions. Word has length 26 [2021-06-05 06:46:26,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:26,369 INFO L482 AbstractCegarLoop]: Abstraction has 1579 states and 5293 transitions. [2021-06-05 06:46:26,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:26,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 5293 transitions. [2021-06-05 06:46:26,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:46:26,371 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:26,371 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:26,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1455 [2021-06-05 06:46:26,584 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:26,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:26,584 INFO L82 PathProgramCache]: Analyzing trace with hash 346540478, now seen corresponding path program 26 times [2021-06-05 06:46:26,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:26,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587794338] [2021-06-05 06:46:26,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:26,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:26,964 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:26,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587794338] [2021-06-05 06:46:26,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587794338] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:26,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532105792] [2021-06-05 06:46:26,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:26,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:46:26,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:26,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:46:26,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:27,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:27,203 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:27,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:46:27,204 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:27,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:27,220 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:27,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:46:27,221 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:27,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:27,230 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:27,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:46:27,232 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:27,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:27,240 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:27,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:46:27,240 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:27,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:27,250 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:27,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:46:27,253 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:27,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:27,263 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:27,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:46:27,265 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:27,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:27,272 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:27,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:46:27,273 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:27,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:27,281 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:27,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 06:46:27,282 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:27,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:27,291 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:27,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:46:27,295 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:27,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:27,305 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:27,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:46:27,306 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:27,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:27,314 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:27,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:46:27,315 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:27,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:27,322 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:27,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:46:27,323 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:27,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:27,333 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:46:27,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:46:27,335 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:27,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:27,346 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:46:27,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:46:27,347 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:27,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:27,357 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:46:27,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:46:27,358 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:27,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:27,366 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:46:27,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:46:27,367 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:27,434 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:27,435 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:46:27,435 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-05 06:46:27,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:27,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532105792] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:27,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:27,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:46:27,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437426442] [2021-06-05 06:46:27,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:46:27,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:27,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:46:27,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:46:27,611 INFO L87 Difference]: Start difference. First operand 1579 states and 5293 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:29,083 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2021-06-05 06:46:29,253 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2021-06-05 06:46:29,545 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2021-06-05 06:46:29,763 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-06-05 06:46:30,027 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2021-06-05 06:46:30,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:30,077 INFO L93 Difference]: Finished difference Result 2206 states and 7151 transitions. [2021-06-05 06:46:30,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:46:30,078 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:46:30,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:30,080 INFO L225 Difference]: With dead ends: 2206 [2021-06-05 06:46:30,080 INFO L226 Difference]: Without dead ends: 2187 [2021-06-05 06:46:30,081 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 2558.6ms TimeCoverageRelationStatistics Valid=286, Invalid=1354, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:46:30,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2021-06-05 06:46:30,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 1585. [2021-06-05 06:46:30,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1584 states have (on average 3.352272727272727) internal successors, (5310), 1584 states have internal predecessors, (5310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:30,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 5310 transitions. [2021-06-05 06:46:30,100 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 5310 transitions. Word has length 26 [2021-06-05 06:46:30,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:30,100 INFO L482 AbstractCegarLoop]: Abstraction has 1585 states and 5310 transitions. [2021-06-05 06:46:30,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:30,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 5310 transitions. [2021-06-05 06:46:30,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:46:30,102 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:30,102 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:30,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1469,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:30,303 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:30,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:30,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1896922042, now seen corresponding path program 44 times [2021-06-05 06:46:30,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:30,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084575017] [2021-06-05 06:46:30,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:30,763 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:30,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084575017] [2021-06-05 06:46:30,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084575017] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:30,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563203237] [2021-06-05 06:46:30,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:30,787 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:46:30,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:30,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 06:46:30,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:31,130 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-06-05 06:46:31,439 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_118, A], 5=[v_prenex_120, v_prenex_116]} [2021-06-05 06:46:31,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:31,460 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:46:31,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:46:31,462 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:31,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:31,478 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:31,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:46:31,482 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:31,636 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 06:46:31,636 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:31,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:31,658 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:46:31,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:46:31,660 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:31,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:31,678 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:46:31,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:46:31,681 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:31,827 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 06:46:31,828 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:31,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:31,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:31,848 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:46:31,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:46:31,849 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:31,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:31,863 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:31,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:46:31,867 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:31,997 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 06:46:31,997 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:32,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:32,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:32,019 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:46:32,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-05 06:46:32,020 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:32,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:32,045 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:46:32,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-05 06:46:32,048 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:32,163 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-05 06:46:32,163 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:32,174 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:46:32,174 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:393, output treesize:161 [2021-06-05 06:46:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:32,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563203237] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:32,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:32,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:46:32,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158774705] [2021-06-05 06:46:32,313 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 06:46:32,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:32,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 06:46:32,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2021-06-05 06:46:32,313 INFO L87 Difference]: Start difference. First operand 1585 states and 5310 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:32,942 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 43 [2021-06-05 06:46:34,695 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 46 [2021-06-05 06:46:34,886 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53 [2021-06-05 06:46:35,215 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2021-06-05 06:46:35,380 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2021-06-05 06:46:35,965 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2021-06-05 06:46:36,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:36,359 INFO L93 Difference]: Finished difference Result 2573 states and 8159 transitions. [2021-06-05 06:46:36,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 06:46:36,359 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:46:36,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:36,362 INFO L225 Difference]: With dead ends: 2573 [2021-06-05 06:46:36,362 INFO L226 Difference]: Without dead ends: 2529 [2021-06-05 06:46:36,362 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 4215.0ms TimeCoverageRelationStatistics Valid=671, Invalid=3361, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 06:46:36,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2529 states. [2021-06-05 06:46:36,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2529 to 1585. [2021-06-05 06:46:36,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1584 states have (on average 3.352272727272727) internal successors, (5310), 1584 states have internal predecessors, (5310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:36,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 5310 transitions. [2021-06-05 06:46:36,383 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 5310 transitions. Word has length 26 [2021-06-05 06:46:36,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:36,383 INFO L482 AbstractCegarLoop]: Abstraction has 1585 states and 5310 transitions. [2021-06-05 06:46:36,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:36,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 5310 transitions. [2021-06-05 06:46:36,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:46:36,385 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:36,385 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:36,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1486 [2021-06-05 06:46:36,586 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:36,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:36,586 INFO L82 PathProgramCache]: Analyzing trace with hash 920603198, now seen corresponding path program 45 times [2021-06-05 06:46:36,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:36,586 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127055961] [2021-06-05 06:46:36,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:37,014 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:37,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:37,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127055961] [2021-06-05 06:46:37,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127055961] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:37,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38837562] [2021-06-05 06:46:37,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:37,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:46:37,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:37,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:46:37,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:37,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,609 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 06:46:37,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 33 [2021-06-05 06:46:37,614 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:37,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,641 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:37,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 41 [2021-06-05 06:46:37,650 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:37,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,677 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:46:37,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 06:46:37,679 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:37,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,707 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-05 06:46:37,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 25 [2021-06-05 06:46:37,709 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:37,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,728 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:46:37,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:46:37,728 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:37,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,746 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:46:37,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 06:46:37,747 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:37,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,765 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:46:37,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 06:46:37,766 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:37,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,784 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:46:37,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 1 [2021-06-05 06:46:37,785 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:37,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,811 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:46:37,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 26 [2021-06-05 06:46:37,813 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:37,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,838 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-05 06:46:37,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 25 [2021-06-05 06:46:37,839 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:37,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,856 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:46:37,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 1 [2021-06-05 06:46:37,857 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:37,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,874 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:46:37,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 06:46:37,875 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:37,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,890 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:46:37,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 06:46:37,891 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:37,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,914 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-05 06:46:37,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 25 [2021-06-05 06:46:37,916 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:37,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,931 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:46:37,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 1 [2021-06-05 06:46:37,931 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:37,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:37,941 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:46:37,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:46:37,941 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:38,059 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2021-06-05 06:46:38,060 INFO L628 ElimStorePlain]: treesize reduction 79, result has 66.8 percent of original size [2021-06-05 06:46:38,062 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:46:38,062 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:953, output treesize:180 [2021-06-05 06:46:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:38,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38837562] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:38,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:38,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2021-06-05 06:46:38,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623054230] [2021-06-05 06:46:38,199 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 06:46:38,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:38,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 06:46:38,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-06-05 06:46:38,200 INFO L87 Difference]: Start difference. First operand 1585 states and 5310 transitions. Second operand has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:39,300 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-06-05 06:46:39,741 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2021-06-05 06:46:41,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:41,111 INFO L93 Difference]: Finished difference Result 3102 states and 9804 transitions. [2021-06-05 06:46:41,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:46:41,112 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:46:41,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:41,116 INFO L225 Difference]: With dead ends: 3102 [2021-06-05 06:46:41,116 INFO L226 Difference]: Without dead ends: 3072 [2021-06-05 06:46:41,116 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 2950.5ms TimeCoverageRelationStatistics Valid=533, Invalid=3007, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:46:41,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2021-06-05 06:46:41,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 1645. [2021-06-05 06:46:41,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 3.3619221411192215) internal successors, (5527), 1644 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:41,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 5527 transitions. [2021-06-05 06:46:41,142 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 5527 transitions. Word has length 26 [2021-06-05 06:46:41,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:41,142 INFO L482 AbstractCegarLoop]: Abstraction has 1645 states and 5527 transitions. [2021-06-05 06:46:41,142 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 21 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:41,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 5527 transitions. [2021-06-05 06:46:41,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:46:41,144 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:41,144 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:41,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1554 [2021-06-05 06:46:41,360 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:41,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:41,360 INFO L82 PathProgramCache]: Analyzing trace with hash 2122915566, now seen corresponding path program 46 times [2021-06-05 06:46:41,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:41,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458143015] [2021-06-05 06:46:41,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:41,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:41,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458143015] [2021-06-05 06:46:41,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458143015] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:41,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290573636] [2021-06-05 06:46:41,780 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:41,807 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:46:41,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:41,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:46:41,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:42,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,300 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,300 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 06:46:42,302 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:42,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:46:42,309 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:42,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,314 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:46:42,318 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:42,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:46:42,325 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:42,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:46:42,332 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:42,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:46:42,340 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:42,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:46:42,347 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:42,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:46:42,355 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:42,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:46:42,362 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:42,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:46:42,369 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:42,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:46:42,377 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:42,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:46:42,384 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:42,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:46:42,391 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:42,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:46:42,398 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:42,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:42,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:46:42,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 06:46:42,402 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:42,425 INFO L628 ElimStorePlain]: treesize reduction 18, result has 60.0 percent of original size [2021-06-05 06:46:42,426 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:46:42,426 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 06:46:42,444 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:42,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290573636] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:42,444 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:42,444 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2021-06-05 06:46:42,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482688070] [2021-06-05 06:46:42,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:46:42,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:42,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:46:42,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:46:42,445 INFO L87 Difference]: Start difference. First operand 1645 states and 5527 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:44,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:44,579 INFO L93 Difference]: Finished difference Result 3253 states and 10418 transitions. [2021-06-05 06:46:44,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 06:46:44,580 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:46:44,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:44,584 INFO L225 Difference]: With dead ends: 3253 [2021-06-05 06:46:44,584 INFO L226 Difference]: Without dead ends: 3217 [2021-06-05 06:46:44,584 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 2016.8ms TimeCoverageRelationStatistics Valid=449, Invalid=2001, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:46:44,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3217 states. [2021-06-05 06:46:44,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3217 to 1763. [2021-06-05 06:46:44,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 3.388195232690125) internal successors, (5970), 1762 states have internal predecessors, (5970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:44,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 5970 transitions. [2021-06-05 06:46:44,611 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 5970 transitions. Word has length 26 [2021-06-05 06:46:44,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:44,611 INFO L482 AbstractCegarLoop]: Abstraction has 1763 states and 5970 transitions. [2021-06-05 06:46:44,611 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:44,611 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 5970 transitions. [2021-06-05 06:46:44,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:46:44,613 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:44,613 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:44,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1660 [2021-06-05 06:46:44,814 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:44,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:44,814 INFO L82 PathProgramCache]: Analyzing trace with hash -338403078, now seen corresponding path program 47 times [2021-06-05 06:46:44,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:44,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878636650] [2021-06-05 06:46:44,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:45,215 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:45,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:45,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878636650] [2021-06-05 06:46:45,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878636650] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:45,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454353701] [2021-06-05 06:46:45,215 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:45,253 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:46:45,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:45,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:46:45,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:45,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,695 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:46:45,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31 [2021-06-05 06:46:45,697 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:45,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,720 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-05 06:46:45,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 28 [2021-06-05 06:46:45,721 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:45,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,746 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:46:45,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 35 [2021-06-05 06:46:45,750 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:45,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,772 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:46:45,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 28 [2021-06-05 06:46:45,773 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:45,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,795 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-05 06:46:45,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 25 [2021-06-05 06:46:45,796 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:45,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,816 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:46:45,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:46:45,817 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:45,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,841 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 06:46:45,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2021-06-05 06:46:45,845 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:45,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,867 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:46:45,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 06:46:45,868 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:45,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,893 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:45,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-05 06:46:45,908 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:45,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,930 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-05 06:46:45,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 25 [2021-06-05 06:46:45,932 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:45,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,969 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:46:45,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 26 [2021-06-05 06:46:45,971 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:45,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:45,992 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-05 06:46:45,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2021-06-05 06:46:45,994 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:45,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:46,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:46,008 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:46:46,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:46:46,009 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:46,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:46,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:46,022 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:46:46,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 06:46:46,023 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:46,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:46,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:46,036 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:46:46,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:46:46,037 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:46,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:46,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:46,045 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:46:46,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 06:46:46,046 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:46,147 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2021-06-05 06:46:46,147 INFO L628 ElimStorePlain]: treesize reduction 160, result has 40.3 percent of original size [2021-06-05 06:46:46,149 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:46:46,149 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:761, output treesize:90 [2021-06-05 06:46:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:46,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454353701] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:46,225 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:46,225 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 18 [2021-06-05 06:46:46,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209029491] [2021-06-05 06:46:46,225 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:46:46,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:46,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:46:46,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:46:46,226 INFO L87 Difference]: Start difference. First operand 1763 states and 5970 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:48,333 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2021-06-05 06:46:48,824 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2021-06-05 06:46:49,024 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 41 [2021-06-05 06:46:49,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:49,243 INFO L93 Difference]: Finished difference Result 3738 states and 11851 transitions. [2021-06-05 06:46:49,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:46:49,243 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:46:49,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:49,248 INFO L225 Difference]: With dead ends: 3738 [2021-06-05 06:46:49,248 INFO L226 Difference]: Without dead ends: 3681 [2021-06-05 06:46:49,249 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 2913.0ms TimeCoverageRelationStatistics Valid=639, Invalid=2553, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 06:46:49,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2021-06-05 06:46:49,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 1801. [2021-06-05 06:46:49,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1800 states have (on average 3.397777777777778) internal successors, (6116), 1800 states have internal predecessors, (6116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:49,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 6116 transitions. [2021-06-05 06:46:49,280 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 6116 transitions. Word has length 26 [2021-06-05 06:46:49,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:49,280 INFO L482 AbstractCegarLoop]: Abstraction has 1801 states and 6116 transitions. [2021-06-05 06:46:49,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:49,280 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 6116 transitions. [2021-06-05 06:46:49,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:46:49,282 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:49,282 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:49,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1766,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:49,496 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:49,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:49,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1512099618, now seen corresponding path program 27 times [2021-06-05 06:46:49,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:49,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161361281] [2021-06-05 06:46:49,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:49,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:49,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:49,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161361281] [2021-06-05 06:46:49,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161361281] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:49,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637082058] [2021-06-05 06:46:49,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:50,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:46:50,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:50,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:46:50,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:50,426 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-05 06:46:50,645 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 06:46:50,783 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:46:50,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:46:50,785 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:50,909 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-06-05 06:46:50,910 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:50,926 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:50,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 06:46:50,928 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:51,053 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-06-05 06:46:51,054 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:51,073 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:46:51,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:46:51,075 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:51,202 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-05 06:46:51,202 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:51,221 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:46:51,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:46:51,224 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:51,347 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-05 06:46:51,347 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:51,361 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:51,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:46:51,365 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:51,487 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 06:46:51,487 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:51,502 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:51,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 06:46:51,503 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:51,625 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-05 06:46:51,626 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:51,644 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:46:51,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 06:46:51,648 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:51,768 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 06:46:51,768 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:51,784 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:46:51,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:46:51,785 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:51,899 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-05 06:46:51,900 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:51,912 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:46:51,912 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:365, output treesize:357 [2021-06-05 06:46:52,116 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-06-05 06:46:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:52,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637082058] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:52,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:52,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-05 06:46:52,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3802190] [2021-06-05 06:46:52,229 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:46:52,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:52,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:46:52,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:46:52,229 INFO L87 Difference]: Start difference. First operand 1801 states and 6116 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:53,069 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2021-06-05 06:46:53,270 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2021-06-05 06:46:53,749 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-06-05 06:46:53,966 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 06:46:54,188 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2021-06-05 06:46:54,656 WARN L205 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2021-06-05 06:46:55,034 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 77 [2021-06-05 06:46:55,584 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 67 [2021-06-05 06:46:56,003 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 33 [2021-06-05 06:46:56,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:56,152 INFO L93 Difference]: Finished difference Result 2391 states and 7895 transitions. [2021-06-05 06:46:56,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 06:46:56,153 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:46:56,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:56,156 INFO L225 Difference]: With dead ends: 2391 [2021-06-05 06:46:56,157 INFO L226 Difference]: Without dead ends: 2361 [2021-06-05 06:46:56,157 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 4343.6ms TimeCoverageRelationStatistics Valid=268, Invalid=1454, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 06:46:56,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2021-06-05 06:46:56,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 1809. [2021-06-05 06:46:56,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1809 states, 1808 states have (on average 3.396017699115044) internal successors, (6140), 1808 states have internal predecessors, (6140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:56,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 6140 transitions. [2021-06-05 06:46:56,180 INFO L78 Accepts]: Start accepts. Automaton has 1809 states and 6140 transitions. Word has length 26 [2021-06-05 06:46:56,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:56,180 INFO L482 AbstractCegarLoop]: Abstraction has 1809 states and 6140 transitions. [2021-06-05 06:46:56,180 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:56,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1809 states and 6140 transitions. [2021-06-05 06:46:56,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:46:56,182 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:56,182 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:46:56,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1865 [2021-06-05 06:46:56,383 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:56,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:56,383 INFO L82 PathProgramCache]: Analyzing trace with hash -105433162, now seen corresponding path program 28 times [2021-06-05 06:46:56,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:56,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874222764] [2021-06-05 06:46:56,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:56,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:56,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:56,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:56,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874222764] [2021-06-05 06:46:56,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874222764] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:56,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160793212] [2021-06-05 06:46:56,717 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:56,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:46:56,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:56,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:46:56,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:57,076 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 06:46:57,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:57,142 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:57,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:46:57,145 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:57,248 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-05 06:46:57,249 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:57,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:57,261 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:46:57,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:46:57,262 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:57,360 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:57,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:57,372 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:57,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:46:57,375 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:57,469 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:57,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:57,480 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:57,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:46:57,483 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:57,581 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:57,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:57,592 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:46:57,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:46:57,594 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:57,685 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:57,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:57,695 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:57,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:46:57,697 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:57,786 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:57,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:57,805 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:57,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:46:57,807 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:57,894 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:57,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:46:57,904 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:46:57,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:46:57,905 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:46:57,990 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:46:57,995 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:46:57,996 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174 [2021-06-05 06:46:58,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:46:58,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160793212] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:58,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:58,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:46:58,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949591633] [2021-06-05 06:46:58,172 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:46:58,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:58,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:46:58,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:46:58,172 INFO L87 Difference]: Start difference. First operand 1809 states and 6140 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:58,477 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-06-05 06:46:58,954 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2021-06-05 06:46:59,469 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-06-05 06:46:59,712 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-05 06:47:00,160 WARN L205 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-06-05 06:47:00,341 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-06-05 06:47:00,573 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2021-06-05 06:47:00,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:00,669 INFO L93 Difference]: Finished difference Result 2637 states and 8679 transitions. [2021-06-05 06:47:00,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 06:47:00,670 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:47:00,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:00,673 INFO L225 Difference]: With dead ends: 2637 [2021-06-05 06:47:00,673 INFO L226 Difference]: Without dead ends: 2603 [2021-06-05 06:47:00,673 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 2720.3ms TimeCoverageRelationStatistics Valid=303, Invalid=1179, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:47:00,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2021-06-05 06:47:00,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 1822. [2021-06-05 06:47:00,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1821 states have (on average 3.402526084568918) internal successors, (6196), 1821 states have internal predecessors, (6196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:00,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 6196 transitions. [2021-06-05 06:47:00,699 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 6196 transitions. Word has length 26 [2021-06-05 06:47:00,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:00,699 INFO L482 AbstractCegarLoop]: Abstraction has 1822 states and 6196 transitions. [2021-06-05 06:47:00,699 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:00,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 6196 transitions. [2021-06-05 06:47:00,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:47:00,701 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:00,701 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:00,901 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1892 [2021-06-05 06:47:00,902 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:00,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:00,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1795376066, now seen corresponding path program 29 times [2021-06-05 06:47:00,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:00,902 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288053143] [2021-06-05 06:47:00,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:01,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:01,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288053143] [2021-06-05 06:47:01,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288053143] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:01,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638247765] [2021-06-05 06:47:01,174 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:01,199 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:47:01,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:01,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:47:01,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:01,662 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_156, v_prenex_158], 6=[v_prenex_157]} [2021-06-05 06:47:01,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:01,684 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:47:01,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:47:01,687 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:01,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:01,706 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:47:01,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:47:01,708 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:01,851 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-05 06:47:01,851 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:01,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:01,868 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:01,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:47:01,873 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:01,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:01,890 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:47:01,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:47:01,892 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:02,029 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 06:47:02,030 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:02,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:02,047 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:02,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 06:47:02,050 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:02,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:02,067 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:47:02,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2021-06-05 06:47:02,068 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:02,329 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2021-06-05 06:47:02,330 INFO L628 ElimStorePlain]: treesize reduction 8, result has 97.4 percent of original size [2021-06-05 06:47:02,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:02,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:02,350 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:47:02,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:47:02,351 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:02,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:02,364 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:02,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 32 [2021-06-05 06:47:02,368 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:02,609 WARN L205 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2021-06-05 06:47:02,609 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.8 percent of original size [2021-06-05 06:47:02,626 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:47:02,626 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:373, output treesize:323 [2021-06-05 06:47:02,820 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2021-06-05 06:47:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:02,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638247765] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:02,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:02,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:47:02,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305226904] [2021-06-05 06:47:02,919 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:47:02,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:02,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:47:02,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:47:02,920 INFO L87 Difference]: Start difference. First operand 1822 states and 6196 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:03,059 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 27 [2021-06-05 06:47:03,845 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2021-06-05 06:47:04,973 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2021-06-05 06:47:05,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:05,019 INFO L93 Difference]: Finished difference Result 2416 states and 8045 transitions. [2021-06-05 06:47:05,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:47:05,019 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:47:05,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:05,022 INFO L225 Difference]: With dead ends: 2416 [2021-06-05 06:47:05,023 INFO L226 Difference]: Without dead ends: 2391 [2021-06-05 06:47:05,023 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 2242.5ms TimeCoverageRelationStatistics Valid=261, Invalid=1071, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:47:05,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2021-06-05 06:47:05,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 1822. [2021-06-05 06:47:05,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1822 states, 1821 states have (on average 3.402526084568918) internal successors, (6196), 1821 states have internal predecessors, (6196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1822 states to 1822 states and 6196 transitions. [2021-06-05 06:47:05,045 INFO L78 Accepts]: Start accepts. Automaton has 1822 states and 6196 transitions. Word has length 26 [2021-06-05 06:47:05,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:05,045 INFO L482 AbstractCegarLoop]: Abstraction has 1822 states and 6196 transitions. [2021-06-05 06:47:05,045 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:05,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1822 states and 6196 transitions. [2021-06-05 06:47:05,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:47:05,047 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:05,047 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:05,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1908 [2021-06-05 06:47:05,247 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:05,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:05,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1102392532, now seen corresponding path program 48 times [2021-06-05 06:47:05,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:05,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137858748] [2021-06-05 06:47:05,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:05,692 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:05,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:05,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137858748] [2021-06-05 06:47:05,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137858748] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:05,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567342428] [2021-06-05 06:47:05,693 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-05 06:47:05,720 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:47:05,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:05,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:47:05,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:06,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-06-05 06:47:06,167 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:06,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:47:06,175 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:06,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16 [2021-06-05 06:47:06,183 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:06,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 16 [2021-06-05 06:47:06,191 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:06,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2021-06-05 06:47:06,200 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:06,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:47:06,208 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:06,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-05 06:47:06,217 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:06,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 19 [2021-06-05 06:47:06,226 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:06,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:47:06,241 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:06,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2021-06-05 06:47:06,250 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:06,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:47:06,258 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:06,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:47:06,266 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:06,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-06-05 06:47:06,275 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:06,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:47:06,282 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:06,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:47:06,290 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:06,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:06,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:06,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:47:06,296 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:06,347 INFO L628 ElimStorePlain]: treesize reduction 223, result has 12.9 percent of original size [2021-06-05 06:47:06,348 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:47:06,348 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:761, output treesize:21 [2021-06-05 06:47:06,392 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:06,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567342428] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:06,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:06,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 06:47:06,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633914991] [2021-06-05 06:47:06,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:47:06,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:06,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:47:06,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:47:06,393 INFO L87 Difference]: Start difference. First operand 1822 states and 6196 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:06,916 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2021-06-05 06:47:08,057 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2021-06-05 06:47:08,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:08,114 INFO L93 Difference]: Finished difference Result 2280 states and 7549 transitions. [2021-06-05 06:47:08,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:47:08,114 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:47:08,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:08,117 INFO L225 Difference]: With dead ends: 2280 [2021-06-05 06:47:08,117 INFO L226 Difference]: Without dead ends: 2258 [2021-06-05 06:47:08,117 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 1964.2ms TimeCoverageRelationStatistics Valid=326, Invalid=1314, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:47:08,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2021-06-05 06:47:08,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 1818. [2021-06-05 06:47:08,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1817 states have (on average 3.4012107870115575) internal successors, (6180), 1817 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:08,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 6180 transitions. [2021-06-05 06:47:08,138 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 6180 transitions. Word has length 26 [2021-06-05 06:47:08,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:08,139 INFO L482 AbstractCegarLoop]: Abstraction has 1818 states and 6180 transitions. [2021-06-05 06:47:08,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:08,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 6180 transitions. [2021-06-05 06:47:08,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:47:08,141 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:08,141 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:08,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1964 [2021-06-05 06:47:08,341 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:08,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:08,342 INFO L82 PathProgramCache]: Analyzing trace with hash 2027886398, now seen corresponding path program 49 times [2021-06-05 06:47:08,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:08,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133336564] [2021-06-05 06:47:08,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:08,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:08,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:08,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133336564] [2021-06-05 06:47:08,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133336564] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:08,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682462823] [2021-06-05 06:47:08,798 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:08,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:47:08,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:09,154 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_161], 5=[v_prenex_163, v_prenex_159]} [2021-06-05 06:47:09,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:09,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:09,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:09,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:09,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:47:09,162 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:09,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:09,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:09,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:09,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:47:09,168 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:09,244 INFO L628 ElimStorePlain]: treesize reduction 141, result has 40.8 percent of original size [2021-06-05 06:47:09,244 INFO L518 ElimStorePlain]: Eliminatee v_prenex_161 vanished before elimination [2021-06-05 06:47:09,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:09,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 13 [2021-06-05 06:47:09,248 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:09,274 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:09,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:09,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:09,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:09,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:09,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-05 06:47:09,279 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:09,302 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:09,303 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:47:09,304 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:294, output treesize:43 [2021-06-05 06:47:09,349 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:09,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682462823] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:09,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:09,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 06:47:09,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896149262] [2021-06-05 06:47:09,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:47:09,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:09,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:47:09,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:47:09,350 INFO L87 Difference]: Start difference. First operand 1818 states and 6180 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:09,936 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 40 [2021-06-05 06:47:11,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:11,245 INFO L93 Difference]: Finished difference Result 2473 states and 8184 transitions. [2021-06-05 06:47:11,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:47:11,246 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:47:11,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:11,249 INFO L225 Difference]: With dead ends: 2473 [2021-06-05 06:47:11,249 INFO L226 Difference]: Without dead ends: 2458 [2021-06-05 06:47:11,249 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 2055.7ms TimeCoverageRelationStatistics Valid=327, Invalid=1313, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:47:11,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2021-06-05 06:47:11,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 1818. [2021-06-05 06:47:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1817 states have (on average 3.4012107870115575) internal successors, (6180), 1817 states have internal predecessors, (6180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:11,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 6180 transitions. [2021-06-05 06:47:11,272 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 6180 transitions. Word has length 26 [2021-06-05 06:47:11,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:11,272 INFO L482 AbstractCegarLoop]: Abstraction has 1818 states and 6180 transitions. [2021-06-05 06:47:11,272 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:11,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 6180 transitions. [2021-06-05 06:47:11,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:47:11,274 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:11,274 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:11,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2054,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:11,476 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:11,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:11,477 INFO L82 PathProgramCache]: Analyzing trace with hash 849981858, now seen corresponding path program 50 times [2021-06-05 06:47:11,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:11,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134828981] [2021-06-05 06:47:11,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:11,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:11,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:11,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134828981] [2021-06-05 06:47:11,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134828981] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:11,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472328131] [2021-06-05 06:47:11,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:11,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:47:11,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:11,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 06:47:11,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:12,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:12,434 INFO L354 Elim1Store]: treesize reduction 20, result has 55.6 percent of original size [2021-06-05 06:47:12,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 40 [2021-06-05 06:47:12,435 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:12,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:12,486 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 06:47:12,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 52 [2021-06-05 06:47:12,498 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:12,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:12,540 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-05 06:47:12,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 51 [2021-06-05 06:47:12,544 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:12,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:12,585 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 06:47:12,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 47 [2021-06-05 06:47:12,588 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:12,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:12,629 INFO L354 Elim1Store]: treesize reduction 17, result has 62.2 percent of original size [2021-06-05 06:47:12,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 46 [2021-06-05 06:47:12,631 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:12,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:12,670 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 06:47:12,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 44 [2021-06-05 06:47:12,676 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:12,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:12,722 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 06:47:12,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 52 [2021-06-05 06:47:12,732 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:12,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:12,777 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-05 06:47:12,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51 [2021-06-05 06:47:12,781 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:12,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:12,814 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:12,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 57 [2021-06-05 06:47:12,833 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:12,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:12,881 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 06:47:12,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 55 [2021-06-05 06:47:12,887 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:12,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:12,923 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:12,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 63 [2021-06-05 06:47:12,935 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:12,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:12,977 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 06:47:12,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 44 [2021-06-05 06:47:12,982 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:12,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:13,005 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:47:13,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:47:13,006 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:13,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:13,026 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:47:13,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:47:13,027 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:13,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:13,064 INFO L354 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2021-06-05 06:47:13,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 37 [2021-06-05 06:47:13,066 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:13,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:13,078 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:47:13,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 06:47:13,079 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:13,517 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 47 [2021-06-05 06:47:13,518 INFO L628 ElimStorePlain]: treesize reduction 379, result has 47.1 percent of original size [2021-06-05 06:47:13,525 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:47:13,526 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:945, output treesize:389 [2021-06-05 06:47:13,804 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2021-06-05 06:47:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:13,906 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472328131] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:13,906 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:13,906 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2021-06-05 06:47:13,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771230181] [2021-06-05 06:47:13,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 06:47:13,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:13,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 06:47:13,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-06-05 06:47:13,906 INFO L87 Difference]: Start difference. First operand 1818 states and 6180 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:14,567 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2021-06-05 06:47:15,104 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2021-06-05 06:47:15,572 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 34 [2021-06-05 06:47:15,845 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2021-06-05 06:47:16,129 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-06-05 06:47:16,550 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-06-05 06:47:16,682 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2021-06-05 06:47:17,231 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2021-06-05 06:47:17,536 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2021-06-05 06:47:17,753 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2021-06-05 06:47:17,983 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 48 [2021-06-05 06:47:18,161 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2021-06-05 06:47:18,292 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 49 [2021-06-05 06:47:18,853 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2021-06-05 06:47:19,089 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 06:47:19,583 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 06:47:20,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:20,272 INFO L93 Difference]: Finished difference Result 3328 states and 10546 transitions. [2021-06-05 06:47:20,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 06:47:20,273 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:47:20,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:20,277 INFO L225 Difference]: With dead ends: 3328 [2021-06-05 06:47:20,277 INFO L226 Difference]: Without dead ends: 3272 [2021-06-05 06:47:20,277 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1613 ImplicationChecksByTransitivity, 6202.0ms TimeCoverageRelationStatistics Valid=856, Invalid=4400, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 06:47:20,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2021-06-05 06:47:20,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 1831. [2021-06-05 06:47:20,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1831 states, 1830 states have (on average 3.40327868852459) internal successors, (6228), 1830 states have internal predecessors, (6228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:20,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1831 states to 1831 states and 6228 transitions. [2021-06-05 06:47:20,307 INFO L78 Accepts]: Start accepts. Automaton has 1831 states and 6228 transitions. Word has length 26 [2021-06-05 06:47:20,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:20,307 INFO L482 AbstractCegarLoop]: Abstraction has 1831 states and 6228 transitions. [2021-06-05 06:47:20,307 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:20,307 INFO L276 IsEmpty]: Start isEmpty. Operand 1831 states and 6228 transitions. [2021-06-05 06:47:20,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:47:20,309 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:20,309 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:20,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2068 [2021-06-05 06:47:20,510 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:20,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:20,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1044384706, now seen corresponding path program 51 times [2021-06-05 06:47:20,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:20,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822810622] [2021-06-05 06:47:20,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:20,937 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:20,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:20,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822810622] [2021-06-05 06:47:20,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822810622] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:20,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029406929] [2021-06-05 06:47:20,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:20,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:47:20,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:20,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 06:47:20,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:21,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:21,523 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 06:47:21,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 52 [2021-06-05 06:47:21,533 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:21,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:21,580 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 06:47:21,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 55 [2021-06-05 06:47:21,585 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:21,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:21,625 INFO L354 Elim1Store]: treesize reduction 27, result has 40.0 percent of original size [2021-06-05 06:47:21,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 36 [2021-06-05 06:47:21,626 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:21,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:21,679 INFO L354 Elim1Store]: treesize reduction 4, result has 91.1 percent of original size [2021-06-05 06:47:21,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 59 [2021-06-05 06:47:21,688 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:21,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:21,709 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:47:21,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:47:21,710 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:21,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:21,747 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:21,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 57 [2021-06-05 06:47:21,768 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:21,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:21,818 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 06:47:21,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 44 [2021-06-05 06:47:21,825 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:21,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:21,875 INFO L354 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2021-06-05 06:47:21,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 52 [2021-06-05 06:47:21,887 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:21,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:21,928 INFO L354 Elim1Store]: treesize reduction 21, result has 53.3 percent of original size [2021-06-05 06:47:21,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 42 [2021-06-05 06:47:21,931 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:21,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:21,950 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:47:21,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:47:21,950 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:21,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:21,992 INFO L354 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2021-06-05 06:47:21,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 44 [2021-06-05 06:47:21,997 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:22,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:22,030 INFO L354 Elim1Store]: treesize reduction 34, result has 24.4 percent of original size [2021-06-05 06:47:22,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 29 [2021-06-05 06:47:22,032 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:22,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:22,052 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:47:22,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:47:22,052 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:22,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:22,071 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:47:22,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 06:47:22,072 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:22,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:22,114 INFO L354 Elim1Store]: treesize reduction 15, result has 66.7 percent of original size [2021-06-05 06:47:22,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 48 [2021-06-05 06:47:22,116 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:22,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:22,128 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-06-05 06:47:22,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:47:22,129 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:22,612 WARN L205 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2021-06-05 06:47:22,612 INFO L628 ElimStorePlain]: treesize reduction 174, result has 69.4 percent of original size [2021-06-05 06:47:22,619 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 06:47:22,619 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:993, output treesize:461 [2021-06-05 06:47:22,909 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2021-06-05 06:47:23,184 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 44 [2021-06-05 06:47:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:23,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029406929] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:23,314 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:23,314 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-06-05 06:47:23,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492773680] [2021-06-05 06:47:23,314 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 06:47:23,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:23,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 06:47:23,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:47:23,315 INFO L87 Difference]: Start difference. First operand 1831 states and 6228 transitions. Second operand has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:24,111 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 44 [2021-06-05 06:47:24,316 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2021-06-05 06:47:25,289 WARN L205 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2021-06-05 06:47:25,686 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2021-06-05 06:47:25,807 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-06-05 06:47:25,962 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2021-06-05 06:47:26,090 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2021-06-05 06:47:26,260 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-06-05 06:47:26,684 WARN L205 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 59 [2021-06-05 06:47:27,152 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2021-06-05 06:47:27,446 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 47 [2021-06-05 06:47:27,743 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2021-06-05 06:47:28,080 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 44 [2021-06-05 06:47:28,575 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2021-06-05 06:47:28,751 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 39 [2021-06-05 06:47:29,449 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64 [2021-06-05 06:47:29,841 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2021-06-05 06:47:30,183 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2021-06-05 06:47:30,628 WARN L205 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-06-05 06:47:30,908 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 46 [2021-06-05 06:47:31,392 WARN L205 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 63 [2021-06-05 06:47:31,678 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 37 [2021-06-05 06:47:31,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:31,809 INFO L93 Difference]: Finished difference Result 3152 states and 10146 transitions. [2021-06-05 06:47:31,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 06:47:31,809 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:47:31,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:31,813 INFO L225 Difference]: With dead ends: 3152 [2021-06-05 06:47:31,813 INFO L226 Difference]: Without dead ends: 3089 [2021-06-05 06:47:31,814 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1505 ImplicationChecksByTransitivity, 8634.4ms TimeCoverageRelationStatistics Valid=867, Invalid=4103, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 06:47:31,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2021-06-05 06:47:31,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 1811. [2021-06-05 06:47:31,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 3.4027624309392266) internal successors, (6159), 1810 states have internal predecessors, (6159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:31,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 6159 transitions. [2021-06-05 06:47:31,842 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 6159 transitions. Word has length 26 [2021-06-05 06:47:31,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:31,842 INFO L482 AbstractCegarLoop]: Abstraction has 1811 states and 6159 transitions. [2021-06-05 06:47:31,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:31,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 6159 transitions. [2021-06-05 06:47:31,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:47:31,844 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:31,844 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:32,044 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2239 [2021-06-05 06:47:32,044 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:32,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:32,045 INFO L82 PathProgramCache]: Analyzing trace with hash -696255298, now seen corresponding path program 52 times [2021-06-05 06:47:32,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:32,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164170861] [2021-06-05 06:47:32,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:32,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:32,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:32,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164170861] [2021-06-05 06:47:32,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164170861] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:32,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984571022] [2021-06-05 06:47:32,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:32,407 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:47:32,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:32,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:47:32,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:33,003 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 81 [2021-06-05 06:47:33,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:33,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:33,222 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-06-05 06:47:33,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 32 [2021-06-05 06:47:33,226 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:33,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:33,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:33,249 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:33,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 37 [2021-06-05 06:47:33,255 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:33,520 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-06-05 06:47:33,520 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:33,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:33,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:33,557 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-06-05 06:47:33,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 39 [2021-06-05 06:47:33,561 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:33,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:33,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:33,591 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-06-05 06:47:33,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 36 [2021-06-05 06:47:33,595 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:33,849 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-06-05 06:47:33,850 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:33,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:33,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:33,878 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-06-05 06:47:33,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:47:33,880 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:33,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:33,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:33,904 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-06-05 06:47:33,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 06:47:33,908 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:34,342 WARN L205 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 115 [2021-06-05 06:47:34,342 INFO L628 ElimStorePlain]: treesize reduction 38, result has 92.7 percent of original size [2021-06-05 06:47:34,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:34,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:34,371 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:34,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2021-06-05 06:47:34,377 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:34,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:34,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:34,407 INFO L354 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2021-06-05 06:47:34,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 39 [2021-06-05 06:47:34,414 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:34,824 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 110 [2021-06-05 06:47:34,825 INFO L628 ElimStorePlain]: treesize reduction 47, result has 90.4 percent of original size [2021-06-05 06:47:34,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:34,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:34,851 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:34,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2021-06-05 06:47:34,866 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:34,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:34,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:34,893 INFO L354 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2021-06-05 06:47:34,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 26 [2021-06-05 06:47:34,894 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:35,071 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 06:47:35,072 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:35,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:35,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:35,100 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-06-05 06:47:35,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 31 [2021-06-05 06:47:35,108 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:35,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:35,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:35,120 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-06-05 06:47:35,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 06:47:35,121 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:35,259 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 06:47:35,259 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:35,271 INFO L550 ElimStorePlain]: Start of recursive call 1: 12 dim-0 vars, 6 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 06:47:35,271 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:621, output treesize:257 [2021-06-05 06:47:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:35,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984571022] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:35,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:35,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 06:47:35,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494842477] [2021-06-05 06:47:35,417 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:47:35,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:35,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:47:35,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:47:35,418 INFO L87 Difference]: Start difference. First operand 1811 states and 6159 transitions. Second operand has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:36,574 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-06-05 06:47:37,432 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2021-06-05 06:47:37,568 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2021-06-05 06:47:37,991 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 97 [2021-06-05 06:47:38,497 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 102 [2021-06-05 06:47:38,621 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2021-06-05 06:47:38,862 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 37 [2021-06-05 06:47:39,014 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2021-06-05 06:47:39,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:39,419 INFO L93 Difference]: Finished difference Result 3034 states and 9904 transitions. [2021-06-05 06:47:39,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 06:47:39,419 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:47:39,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:39,423 INFO L225 Difference]: With dead ends: 3034 [2021-06-05 06:47:39,423 INFO L226 Difference]: Without dead ends: 2983 [2021-06-05 06:47:39,423 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 4113.2ms TimeCoverageRelationStatistics Valid=529, Invalid=2333, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 06:47:39,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2983 states. [2021-06-05 06:47:39,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2983 to 1871. [2021-06-05 06:47:39,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1870 states have (on average 3.411229946524064) internal successors, (6379), 1870 states have internal predecessors, (6379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:39,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 6379 transitions. [2021-06-05 06:47:39,457 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 6379 transitions. Word has length 26 [2021-06-05 06:47:39,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:39,457 INFO L482 AbstractCegarLoop]: Abstraction has 1871 states and 6379 transitions. [2021-06-05 06:47:39,457 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.4) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:39,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 6379 transitions. [2021-06-05 06:47:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:47:39,459 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:39,459 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:39,659 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2406,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:39,660 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:39,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:39,660 INFO L82 PathProgramCache]: Analyzing trace with hash 227092556, now seen corresponding path program 53 times [2021-06-05 06:47:39,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:39,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833230178] [2021-06-05 06:47:39,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:39,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:39,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:39,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833230178] [2021-06-05 06:47:39,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833230178] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:39,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872458941] [2021-06-05 06:47:39,978 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:40,007 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:47:40,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:40,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:47:40,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:40,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2021-06-05 06:47:40,450 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:40,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 16 [2021-06-05 06:47:40,458 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:40,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-06-05 06:47:40,484 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:40,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,492 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:47:40,494 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:40,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:47:40,503 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:40,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:47:40,512 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:40,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,520 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:47:40,521 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:40,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 16 [2021-06-05 06:47:40,530 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:40,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 13 [2021-06-05 06:47:40,539 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:40,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:47:40,548 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:40,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:47:40,556 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:40,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:47:40,564 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:40,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2021-06-05 06:47:40,573 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:40,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 13 [2021-06-05 06:47:40,581 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:40,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2021-06-05 06:47:40,589 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:40,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:40,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:40,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2021-06-05 06:47:40,595 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:40,626 INFO L628 ElimStorePlain]: treesize reduction 20, result has 64.9 percent of original size [2021-06-05 06:47:40,627 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:47:40,627 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:793, output treesize:27 [2021-06-05 06:47:40,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:40,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872458941] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:40,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:40,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:47:40,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665009030] [2021-06-05 06:47:40,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:47:40,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:40,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:47:40,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:47:40,659 INFO L87 Difference]: Start difference. First operand 1871 states and 6379 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:41,975 INFO L93 Difference]: Finished difference Result 2487 states and 8126 transitions. [2021-06-05 06:47:41,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:47:41,975 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:47:41,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:41,978 INFO L225 Difference]: With dead ends: 2487 [2021-06-05 06:47:41,978 INFO L226 Difference]: Without dead ends: 2449 [2021-06-05 06:47:41,979 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 1499.8ms TimeCoverageRelationStatistics Valid=316, Invalid=1244, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 06:47:41,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2449 states. [2021-06-05 06:47:41,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2449 to 1871. [2021-06-05 06:47:41,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1871 states, 1870 states have (on average 3.409090909090909) internal successors, (6375), 1870 states have internal predecessors, (6375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:42,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 6375 transitions. [2021-06-05 06:47:42,002 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 6375 transitions. Word has length 26 [2021-06-05 06:47:42,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:42,002 INFO L482 AbstractCegarLoop]: Abstraction has 1871 states and 6375 transitions. [2021-06-05 06:47:42,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:42,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 6375 transitions. [2021-06-05 06:47:42,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:47:42,004 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:42,004 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:42,205 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2491,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:42,205 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:42,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:42,205 INFO L82 PathProgramCache]: Analyzing trace with hash -538930356, now seen corresponding path program 54 times [2021-06-05 06:47:42,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:42,205 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279731311] [2021-06-05 06:47:42,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:42,539 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:42,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279731311] [2021-06-05 06:47:42,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279731311] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:42,539 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883420717] [2021-06-05 06:47:42,539 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:42,564 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:47:42,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:42,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:47:42,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:42,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,802 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-05 06:47:42,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31 [2021-06-05 06:47:42,804 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:42,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,834 INFO L354 Elim1Store]: treesize reduction 20, result has 25.9 percent of original size [2021-06-05 06:47:42,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 25 [2021-06-05 06:47:42,836 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:42,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,859 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-05 06:47:42,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-05 06:47:42,863 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:42,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,878 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:47:42,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:47:42,879 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:42,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,901 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-05 06:47:42,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 28 [2021-06-05 06:47:42,903 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:42,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,926 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-05 06:47:42,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 28 [2021-06-05 06:47:42,927 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:42,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,941 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:47:42,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1 [2021-06-05 06:47:42,942 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:42,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,964 INFO L354 Elim1Store]: treesize reduction 19, result has 29.6 percent of original size [2021-06-05 06:47:42,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 26 [2021-06-05 06:47:42,965 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:42,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,978 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:47:42,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:47:42,979 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:42,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:42,993 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:47:42,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:47:42,994 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:42,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:43,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:43,016 INFO L354 Elim1Store]: treesize reduction 16, result has 40.7 percent of original size [2021-06-05 06:47:43,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 26 [2021-06-05 06:47:43,017 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:43,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:43,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:43,031 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:47:43,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:47:43,032 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:43,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:43,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:43,053 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-05 06:47:43,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 24 [2021-06-05 06:47:43,055 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:43,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:43,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:43,075 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:43,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 39 [2021-06-05 06:47:43,080 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:43,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:43,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:43,101 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-05 06:47:43,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 25 [2021-06-05 06:47:43,102 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:43,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:43,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:43,110 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:47:43,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:47:43,111 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:43,197 INFO L628 ElimStorePlain]: treesize reduction 128, result has 42.1 percent of original size [2021-06-05 06:47:43,198 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:47:43,198 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:705, output treesize:93 [2021-06-05 06:47:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:43,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883420717] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:43,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:43,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:47:43,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556214003] [2021-06-05 06:47:43,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:47:43,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:43,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:47:43,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:47:43,289 INFO L87 Difference]: Start difference. First operand 1871 states and 6375 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:43,725 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2021-06-05 06:47:44,131 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2021-06-05 06:47:44,527 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2021-06-05 06:47:44,927 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2021-06-05 06:47:45,576 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 41 [2021-06-05 06:47:45,880 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53 [2021-06-05 06:47:46,045 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2021-06-05 06:47:46,330 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2021-06-05 06:47:46,499 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2021-06-05 06:47:46,700 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 59 [2021-06-05 06:47:46,929 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2021-06-05 06:47:47,185 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2021-06-05 06:47:47,395 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 54 [2021-06-05 06:47:47,662 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2021-06-05 06:47:47,964 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 62 [2021-06-05 06:47:48,244 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2021-06-05 06:47:48,569 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2021-06-05 06:47:48,757 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 38 [2021-06-05 06:47:48,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:48,944 INFO L93 Difference]: Finished difference Result 3107 states and 9967 transitions. [2021-06-05 06:47:48,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:47:48,944 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:47:48,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:48,948 INFO L225 Difference]: With dead ends: 3107 [2021-06-05 06:47:48,948 INFO L226 Difference]: Without dead ends: 3069 [2021-06-05 06:47:48,949 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 5442.1ms TimeCoverageRelationStatistics Valid=747, Invalid=2913, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 06:47:48,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2021-06-05 06:47:48,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 1881. [2021-06-05 06:47:48,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1880 states have (on average 3.4159574468085108) internal successors, (6422), 1880 states have internal predecessors, (6422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:48,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 6422 transitions. [2021-06-05 06:47:48,975 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 6422 transitions. Word has length 26 [2021-06-05 06:47:48,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:48,976 INFO L482 AbstractCegarLoop]: Abstraction has 1881 states and 6422 transitions. [2021-06-05 06:47:48,976 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:48,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 6422 transitions. [2021-06-05 06:47:48,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:47:48,978 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:48,978 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:49,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2587 [2021-06-05 06:47:49,193 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:49,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:49,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1644457752, now seen corresponding path program 30 times [2021-06-05 06:47:49,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:49,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927931282] [2021-06-05 06:47:49,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:49,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:49,504 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:49,504 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:49,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927931282] [2021-06-05 06:47:49,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927931282] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:49,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43896875] [2021-06-05 06:47:49,505 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:49,530 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:47:49,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:49,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:47:49,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:49,904 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-06-05 06:47:50,075 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2021-06-05 06:47:50,122 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_191, v_prenex_189], 2=[v_prenex_190, A]} [2021-06-05 06:47:50,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:50,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:47:50,129 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:50,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:50,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:47:50,134 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:50,264 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2021-06-05 06:47:50,264 INFO L628 ElimStorePlain]: treesize reduction 118, result has 55.1 percent of original size [2021-06-05 06:47:50,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:50,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 06:47:50,269 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:50,315 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:50,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:50,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:50,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:47:50,320 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:50,362 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:50,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:50,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:50,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:50,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:47:50,368 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:50,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:50,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:50,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:47:50,372 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:50,408 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:50,410 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:47:50,410 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:293, output treesize:51 [2021-06-05 06:47:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:50,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43896875] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:50,467 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:50,467 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-05 06:47:50,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024978091] [2021-06-05 06:47:50,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:47:50,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:50,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:47:50,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:47:50,468 INFO L87 Difference]: Start difference. First operand 1881 states and 6422 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:51,197 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2021-06-05 06:47:51,703 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-06-05 06:47:51,940 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2021-06-05 06:47:52,169 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2021-06-05 06:47:52,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:52,302 INFO L93 Difference]: Finished difference Result 2308 states and 7739 transitions. [2021-06-05 06:47:52,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:47:52,303 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:47:52,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:52,306 INFO L225 Difference]: With dead ends: 2308 [2021-06-05 06:47:52,306 INFO L226 Difference]: Without dead ends: 2293 [2021-06-05 06:47:52,306 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2072.8ms TimeCoverageRelationStatistics Valid=182, Invalid=1008, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:47:52,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2021-06-05 06:47:52,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 1873. [2021-06-05 06:47:52,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 3.419337606837607) internal successors, (6401), 1872 states have internal predecessors, (6401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:52,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 6401 transitions. [2021-06-05 06:47:52,328 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 6401 transitions. Word has length 26 [2021-06-05 06:47:52,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:52,328 INFO L482 AbstractCegarLoop]: Abstraction has 1873 states and 6401 transitions. [2021-06-05 06:47:52,329 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 19 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:52,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 6401 transitions. [2021-06-05 06:47:52,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:47:52,331 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:52,331 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:52,531 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2612 [2021-06-05 06:47:52,531 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:52,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:52,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1033146674, now seen corresponding path program 31 times [2021-06-05 06:47:52,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:52,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513058182] [2021-06-05 06:47:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:52,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:52,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:52,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513058182] [2021-06-05 06:47:52,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513058182] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:52,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526852345] [2021-06-05 06:47:52,844 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:52,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:47:52,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:53,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:53,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:47:53,177 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:53,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:53,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:47:53,183 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:53,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:53,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:47:53,188 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:53,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:53,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:47:53,193 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:53,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:53,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 06:47:53,199 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:53,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:53,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:47:53,204 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:53,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:53,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:47:53,209 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:53,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:53,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:47:53,214 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:53,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:53,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:47:53,219 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:53,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:53,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:47:53,224 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:53,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:53,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:47:53,229 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:53,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:53,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:47:53,235 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:53,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:53,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:47:53,240 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:53,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:53,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:47:53,245 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:53,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:53,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:53,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:47:53,249 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:53,320 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 06:47:53,321 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:47:53,322 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 06:47:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:53,375 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526852345] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:53,375 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:53,375 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:47:53,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747801047] [2021-06-05 06:47:53,375 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:47:53,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:53,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:47:53,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:47:53,375 INFO L87 Difference]: Start difference. First operand 1873 states and 6401 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:53,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:53,756 INFO L93 Difference]: Finished difference Result 2211 states and 7445 transitions. [2021-06-05 06:47:53,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 06:47:53,756 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:47:53,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:53,760 INFO L225 Difference]: With dead ends: 2211 [2021-06-05 06:47:53,760 INFO L226 Difference]: Without dead ends: 2196 [2021-06-05 06:47:53,760 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 648.2ms TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:47:53,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2021-06-05 06:47:53,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 1867. [2021-06-05 06:47:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1867 states, 1866 states have (on average 3.4190782422293675) internal successors, (6380), 1866 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:53,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 6380 transitions. [2021-06-05 06:47:53,781 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 6380 transitions. Word has length 26 [2021-06-05 06:47:53,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:53,781 INFO L482 AbstractCegarLoop]: Abstraction has 1867 states and 6380 transitions. [2021-06-05 06:47:53,781 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:53,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 6380 transitions. [2021-06-05 06:47:53,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:47:53,784 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:53,784 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:53,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2625,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:53,997 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:53,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:53,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1034369354, now seen corresponding path program 32 times [2021-06-05 06:47:53,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:53,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214778185] [2021-06-05 06:47:53,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:54,328 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:54,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:54,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214778185] [2021-06-05 06:47:54,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214778185] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:54,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397122632] [2021-06-05 06:47:54,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:54,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:47:54,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:54,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:47:54,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:54,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:54,588 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:54,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:47:54,592 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:54,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:54,603 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:47:54,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:47:54,604 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:54,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:54,612 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:47:54,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:47:54,613 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:54,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:54,621 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:47:54,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:47:54,622 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:54,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:54,632 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:47:54,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:47:54,633 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:54,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:54,641 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:47:54,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:47:54,642 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:54,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:54,652 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:54,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:47:54,656 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:54,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:54,664 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:47:54,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 06:47:54,665 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:54,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:54,676 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:54,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:47:54,677 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:54,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:54,686 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:47:54,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:47:54,686 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:54,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:54,695 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:47:54,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:47:54,696 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:54,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:54,706 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:54,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:47:54,709 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:54,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:54,717 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:47:54,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:47:54,718 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:54,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:54,728 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:54,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:47:54,729 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:54,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:54,737 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:47:54,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:47:54,737 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:54,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:54,745 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:47:54,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:47:54,746 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:54,835 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:54,839 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:47:54,839 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:689, output treesize:174 [2021-06-05 06:47:55,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:55,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397122632] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:55,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:55,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:47:55,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050285575] [2021-06-05 06:47:55,013 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:47:55,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:55,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:47:55,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:47:55,014 INFO L87 Difference]: Start difference. First operand 1867 states and 6380 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:55,586 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 47 [2021-06-05 06:47:56,125 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2021-06-05 06:47:56,472 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 51 [2021-06-05 06:47:56,632 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-06-05 06:47:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:56,675 INFO L93 Difference]: Finished difference Result 2784 states and 9269 transitions. [2021-06-05 06:47:56,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 06:47:56,675 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:47:56,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:56,679 INFO L225 Difference]: With dead ends: 2784 [2021-06-05 06:47:56,679 INFO L226 Difference]: Without dead ends: 2769 [2021-06-05 06:47:56,679 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1921.4ms TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:47:56,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2021-06-05 06:47:56,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 1864. [2021-06-05 06:47:56,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1863 states have (on average 3.416532474503489) internal successors, (6365), 1863 states have internal predecessors, (6365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:56,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 6365 transitions. [2021-06-05 06:47:56,706 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 6365 transitions. Word has length 26 [2021-06-05 06:47:56,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:56,706 INFO L482 AbstractCegarLoop]: Abstraction has 1864 states and 6365 transitions. [2021-06-05 06:47:56,706 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:56,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 6365 transitions. [2021-06-05 06:47:56,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:47:56,708 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:56,709 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:47:56,912 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2653 [2021-06-05 06:47:56,913 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:56,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:56,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1269968860, now seen corresponding path program 33 times [2021-06-05 06:47:56,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:56,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433875733] [2021-06-05 06:47:56,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:57,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:57,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:57,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433875733] [2021-06-05 06:47:57,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433875733] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:57,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471388988] [2021-06-05 06:47:57,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:57,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:47:57,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:57,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:47:57,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:57,587 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-05 06:47:57,811 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2021-06-05 06:47:57,887 INFO L446 ElimStorePlain]: Different costs {1=[A, v_prenex_201], 2=[v_prenex_199, v_prenex_200]} [2021-06-05 06:47:57,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:57,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 06:47:57,892 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:58,004 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2021-06-05 06:47:58,004 INFO L628 ElimStorePlain]: treesize reduction 54, result has 73.9 percent of original size [2021-06-05 06:47:58,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:58,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:47:58,009 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:58,055 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:58,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:58,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:58,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:58,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:47:58,061 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:58,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:58,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:58,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:47:58,066 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:58,105 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:58,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:47:58,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:47:58,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:47:58,109 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:47:58,146 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:47:58,148 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:47:58,148 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:217, output treesize:51 [2021-06-05 06:47:58,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:58,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471388988] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:58,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:58,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:47:58,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747358633] [2021-06-05 06:47:58,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:47:58,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:58,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:47:58,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:47:58,200 INFO L87 Difference]: Start difference. First operand 1864 states and 6365 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:59,367 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2021-06-05 06:47:59,795 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-06-05 06:48:00,096 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 63 [2021-06-05 06:48:00,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:00,239 INFO L93 Difference]: Finished difference Result 2480 states and 8310 transitions. [2021-06-05 06:48:00,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:48:00,239 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:00,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:00,242 INFO L225 Difference]: With dead ends: 2480 [2021-06-05 06:48:00,242 INFO L226 Difference]: Without dead ends: 2465 [2021-06-05 06:48:00,243 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 2411.9ms TimeCoverageRelationStatistics Valid=232, Invalid=958, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:48:00,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2021-06-05 06:48:00,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 1863. [2021-06-05 06:48:00,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 3.4162191192266382) internal successors, (6361), 1862 states have internal predecessors, (6361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:00,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 6361 transitions. [2021-06-05 06:48:00,273 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 6361 transitions. Word has length 26 [2021-06-05 06:48:00,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:00,273 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 6361 transitions. [2021-06-05 06:48:00,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:00,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 6361 transitions. [2021-06-05 06:48:00,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:00,275 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:00,275 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:00,475 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2690,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:00,476 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:00,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:00,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1946185846, now seen corresponding path program 34 times [2021-06-05 06:48:00,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:00,476 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883798239] [2021-06-05 06:48:00,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:00,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:00,736 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:00,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883798239] [2021-06-05 06:48:00,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883798239] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:00,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868682395] [2021-06-05 06:48:00,736 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:00,760 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:48:00,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:00,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:48:00,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:01,020 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-06-05 06:48:01,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:01,126 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:48:01,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:48:01,127 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:01,237 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 06:48:01,237 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:01,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:01,249 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:48:01,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:48:01,251 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:01,354 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-05 06:48:01,354 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:01,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:01,365 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:01,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:48:01,369 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:01,485 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-06-05 06:48:01,485 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:01,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:01,496 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:01,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:48:01,499 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:01,599 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-06-05 06:48:01,600 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:01,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:01,610 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:01,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:48:01,613 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:01,706 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:01,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:01,716 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:01,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:48:01,717 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:01,809 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:01,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:01,819 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:01,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:48:01,820 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:01,908 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:01,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:01,918 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:48:01,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:48:01,919 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:02,002 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:02,008 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:48:02,008 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174 [2021-06-05 06:48:02,176 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:02,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868682395] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:02,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:02,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:48:02,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631909247] [2021-06-05 06:48:02,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:48:02,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:02,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:48:02,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:48:02,177 INFO L87 Difference]: Start difference. First operand 1863 states and 6361 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:02,709 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 42 [2021-06-05 06:48:03,133 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2021-06-05 06:48:03,606 WARN L205 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2021-06-05 06:48:03,993 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2021-06-05 06:48:04,175 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2021-06-05 06:48:04,423 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 49 [2021-06-05 06:48:04,562 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 41 [2021-06-05 06:48:04,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:04,634 INFO L93 Difference]: Finished difference Result 2968 states and 9767 transitions. [2021-06-05 06:48:04,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 06:48:04,634 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:04,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:04,638 INFO L225 Difference]: With dead ends: 2968 [2021-06-05 06:48:04,638 INFO L226 Difference]: Without dead ends: 2938 [2021-06-05 06:48:04,638 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 2702.6ms TimeCoverageRelationStatistics Valid=276, Invalid=984, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:48:04,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2021-06-05 06:48:04,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 1863. [2021-06-05 06:48:04,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1863 states, 1862 states have (on average 3.4183673469387754) internal successors, (6365), 1862 states have internal predecessors, (6365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:04,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1863 states to 1863 states and 6365 transitions. [2021-06-05 06:48:04,665 INFO L78 Accepts]: Start accepts. Automaton has 1863 states and 6365 transitions. Word has length 26 [2021-06-05 06:48:04,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:04,665 INFO L482 AbstractCegarLoop]: Abstraction has 1863 states and 6365 transitions. [2021-06-05 06:48:04,665 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:04,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1863 states and 6365 transitions. [2021-06-05 06:48:04,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:04,667 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:04,667 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:04,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2699,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:04,868 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:04,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:04,868 INFO L82 PathProgramCache]: Analyzing trace with hash 663462910, now seen corresponding path program 35 times [2021-06-05 06:48:04,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:04,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448925274] [2021-06-05 06:48:04,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:05,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:05,201 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:05,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448925274] [2021-06-05 06:48:05,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448925274] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:05,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929898921] [2021-06-05 06:48:05,201 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:05,225 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:48:05,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:05,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:48:05,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:05,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:05,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:05,619 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:05,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:05,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:48:05,625 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:05,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:05,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:48:05,631 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:05,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:05,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:05,637 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:05,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:05,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:05,643 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:05,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:05,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:48:05,649 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:05,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:05,652 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:05,655 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:05,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:05,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:05,661 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:05,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:05,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:48:05,667 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:05,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:05,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:05,673 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:05,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:05,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:48:05,679 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:05,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:05,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:05,685 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:05,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:05,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:05,691 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:05,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:05,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 06:48:05,696 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:05,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:05,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:05,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:48:05,700 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:05,772 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 06:48:05,773 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:48:05,773 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 06:48:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:05,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929898921] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:05,823 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:05,823 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:48:05,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068671402] [2021-06-05 06:48:05,823 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:48:05,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:05,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:48:05,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:48:05,823 INFO L87 Difference]: Start difference. First operand 1863 states and 6365 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:06,593 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-06-05 06:48:06,748 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2021-06-05 06:48:06,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:06,960 INFO L93 Difference]: Finished difference Result 2374 states and 7932 transitions. [2021-06-05 06:48:06,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:48:06,960 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:06,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:06,963 INFO L225 Difference]: With dead ends: 2374 [2021-06-05 06:48:06,963 INFO L226 Difference]: Without dead ends: 2353 [2021-06-05 06:48:06,963 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1380.6ms TimeCoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:48:06,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2353 states. [2021-06-05 06:48:06,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2353 to 1878. [2021-06-05 06:48:06,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1877 states have (on average 3.4214171550346295) internal successors, (6422), 1877 states have internal predecessors, (6422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:06,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 6422 transitions. [2021-06-05 06:48:06,986 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 6422 transitions. Word has length 26 [2021-06-05 06:48:06,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:06,987 INFO L482 AbstractCegarLoop]: Abstraction has 1878 states and 6422 transitions. [2021-06-05 06:48:06,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:06,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 6422 transitions. [2021-06-05 06:48:06,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:06,989 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:06,989 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:07,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2714,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:07,190 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:07,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:07,190 INFO L82 PathProgramCache]: Analyzing trace with hash -716780640, now seen corresponding path program 36 times [2021-06-05 06:48:07,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:07,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597234761] [2021-06-05 06:48:07,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:07,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:07,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:07,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597234761] [2021-06-05 06:48:07,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597234761] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:07,429 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058078868] [2021-06-05 06:48:07,429 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:07,456 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:48:07,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:07,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:48:07,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:07,811 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:48:07,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:48:07,813 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:07,844 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:48:07,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:48:07,845 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:07,853 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:48:07,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 06:48:07,854 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:07,868 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:07,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 06:48:07,871 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:07,887 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:48:07,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:48:07,888 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:07,907 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:48:07,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 06:48:07,911 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:07,921 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:48:07,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:07,921 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:07,949 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:48:07,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:48:07,953 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:07,962 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:48:07,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:07,963 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:07,972 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:48:07,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:07,973 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:07,982 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:48:07,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:48:07,982 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:07,991 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:48:07,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:48:07,992 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:08,001 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:48:08,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:08,002 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:08,017 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:08,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:48:08,023 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:08,039 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:08,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 06:48:08,041 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:08,054 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:48:08,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:48:08,056 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:08,146 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:08,166 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:48:08,166 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:689, output treesize:245 [2021-06-05 06:48:08,322 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-06-05 06:48:08,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:08,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058078868] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:08,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:08,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2021-06-05 06:48:08,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474594929] [2021-06-05 06:48:08,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:48:08,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:08,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:48:08,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:48:08,413 INFO L87 Difference]: Start difference. First operand 1878 states and 6422 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:10,262 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2021-06-05 06:48:10,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:10,306 INFO L93 Difference]: Finished difference Result 2454 states and 8038 transitions. [2021-06-05 06:48:10,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 06:48:10,307 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:10,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:10,310 INFO L225 Difference]: With dead ends: 2454 [2021-06-05 06:48:10,310 INFO L226 Difference]: Without dead ends: 2416 [2021-06-05 06:48:10,310 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 1886.8ms TimeCoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:48:10,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2021-06-05 06:48:10,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 1866. [2021-06-05 06:48:10,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1865 states have (on average 3.420911528150134) internal successors, (6380), 1865 states have internal predecessors, (6380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:10,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 6380 transitions. [2021-06-05 06:48:10,335 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 6380 transitions. Word has length 26 [2021-06-05 06:48:10,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:10,336 INFO L482 AbstractCegarLoop]: Abstraction has 1866 states and 6380 transitions. [2021-06-05 06:48:10,336 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:10,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 6380 transitions. [2021-06-05 06:48:10,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:10,338 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:10,338 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:10,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2742 [2021-06-05 06:48:10,554 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:10,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:10,554 INFO L82 PathProgramCache]: Analyzing trace with hash 475685792, now seen corresponding path program 37 times [2021-06-05 06:48:10,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:10,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409294437] [2021-06-05 06:48:10,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:10,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:10,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409294437] [2021-06-05 06:48:10,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409294437] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:10,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820963239] [2021-06-05 06:48:10,807 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:10,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:48:10,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:11,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:11,123 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:11,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:48:11,125 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:11,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:11,133 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:48:11,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:11,134 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:11,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:11,144 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:11,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:48:11,148 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:11,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:11,160 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:11,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:48:11,162 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:11,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:11,173 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:48:11,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:48:11,175 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:11,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:11,186 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:48:11,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:48:11,187 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:11,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:11,196 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:48:11,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:48:11,197 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:11,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:11,205 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:48:11,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:11,206 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:11,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:11,217 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:48:11,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:48:11,218 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:11,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:11,227 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:48:11,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:48:11,227 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:11,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:11,236 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:48:11,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 06:48:11,237 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:11,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:11,247 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:11,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:48:11,250 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:11,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:11,259 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:48:11,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:48:11,260 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:11,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:11,270 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:11,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:48:11,271 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:11,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:11,280 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:48:11,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:11,281 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:11,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:11,286 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:48:11,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:11,287 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:11,382 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:11,389 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:48:11,389 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:705, output treesize:180 [2021-06-05 06:48:11,538 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2021-06-05 06:48:11,626 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:11,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820963239] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:11,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:11,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:48:11,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598626897] [2021-06-05 06:48:11,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:48:11,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:11,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:48:11,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:48:11,627 INFO L87 Difference]: Start difference. First operand 1866 states and 6380 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:12,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:12,110 INFO L93 Difference]: Finished difference Result 2282 states and 7604 transitions. [2021-06-05 06:48:12,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 06:48:12,110 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:12,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:12,113 INFO L225 Difference]: With dead ends: 2282 [2021-06-05 06:48:12,113 INFO L226 Difference]: Without dead ends: 2257 [2021-06-05 06:48:12,113 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 830.3ms TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:48:12,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2257 states. [2021-06-05 06:48:12,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2257 to 1857. [2021-06-05 06:48:12,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1857 states, 1856 states have (on average 3.4132543103448274) internal successors, (6335), 1856 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:12,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1857 states to 1857 states and 6335 transitions. [2021-06-05 06:48:12,133 INFO L78 Accepts]: Start accepts. Automaton has 1857 states and 6335 transitions. Word has length 26 [2021-06-05 06:48:12,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:12,133 INFO L482 AbstractCegarLoop]: Abstraction has 1857 states and 6335 transitions. [2021-06-05 06:48:12,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:12,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1857 states and 6335 transitions. [2021-06-05 06:48:12,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:12,135 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:12,135 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:12,335 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2792,92 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:12,335 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:12,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:12,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1353247494, now seen corresponding path program 38 times [2021-06-05 06:48:12,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:12,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968289355] [2021-06-05 06:48:12,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:12,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:12,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:12,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968289355] [2021-06-05 06:48:12,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968289355] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:12,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539906649] [2021-06-05 06:48:12,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:12,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:48:12,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:12,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:48:12,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:12,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:12,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:12,913 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:12,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:12,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 06:48:12,919 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:12,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:12,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:48:12,924 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:12,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:12,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:48:12,929 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:12,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:12,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:12,934 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:12,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:12,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:48:12,939 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:12,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:12,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:48:12,945 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:12,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:12,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:12,950 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:12,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:12,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:12,955 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:12,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:12,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:48:12,960 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:12,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:12,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:12,966 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:12,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:12,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:48:12,971 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:12,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:12,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:12,976 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:12,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:12,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:12,980 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:12,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:12,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:12,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:12,984 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:13,064 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 06:48:13,065 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:48:13,065 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 06:48:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:13,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539906649] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:13,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:13,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:48:13,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723381963] [2021-06-05 06:48:13,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:48:13,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:13,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:48:13,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:48:13,119 INFO L87 Difference]: Start difference. First operand 1857 states and 6335 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:13,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:13,381 INFO L93 Difference]: Finished difference Result 1943 states and 6537 transitions. [2021-06-05 06:48:13,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 06:48:13,382 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:13,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:13,384 INFO L225 Difference]: With dead ends: 1943 [2021-06-05 06:48:13,385 INFO L226 Difference]: Without dead ends: 1924 [2021-06-05 06:48:13,385 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 477.8ms TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:48:13,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2021-06-05 06:48:13,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1834. [2021-06-05 06:48:13,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1833 states have (on average 3.413529732678669) internal successors, (6257), 1833 states have internal predecessors, (6257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:13,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 6257 transitions. [2021-06-05 06:48:13,404 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 6257 transitions. Word has length 26 [2021-06-05 06:48:13,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:13,404 INFO L482 AbstractCegarLoop]: Abstraction has 1834 states and 6257 transitions. [2021-06-05 06:48:13,404 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:13,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 6257 transitions. [2021-06-05 06:48:13,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:13,406 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:13,407 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:13,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2833,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:13,607 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:13,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:13,607 INFO L82 PathProgramCache]: Analyzing trace with hash 794427266, now seen corresponding path program 39 times [2021-06-05 06:48:13,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:13,607 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677587363] [2021-06-05 06:48:13,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:13,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:13,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677587363] [2021-06-05 06:48:13,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677587363] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:13,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358550188] [2021-06-05 06:48:13,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:13,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:48:13,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:13,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:48:13,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:14,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:14,236 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:48:14,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:48:14,239 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:14,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:14,257 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:48:14,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:48:14,259 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:14,396 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 06:48:14,396 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:14,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:14,416 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:48:14,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:48:14,417 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:14,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:14,432 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:14,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2021-06-05 06:48:14,437 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:14,696 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2021-06-05 06:48:14,696 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.0 percent of original size [2021-06-05 06:48:14,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:14,713 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:14,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 06:48:14,716 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:14,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:14,735 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:48:14,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2021-06-05 06:48:14,736 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:14,973 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2021-06-05 06:48:14,973 INFO L628 ElimStorePlain]: treesize reduction 8, result has 97.1 percent of original size [2021-06-05 06:48:14,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:14,991 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:48:14,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:48:14,993 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:14,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:15,005 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:15,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:48:15,011 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:15,120 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-06-05 06:48:15,120 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:15,138 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:48:15,138 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:349, output treesize:253 [2021-06-05 06:48:15,327 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2021-06-05 06:48:15,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:15,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358550188] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:15,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:15,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-05 06:48:15,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301617878] [2021-06-05 06:48:15,416 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:48:15,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:15,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:48:15,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:48:15,416 INFO L87 Difference]: Start difference. First operand 1834 states and 6257 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:16,040 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2021-06-05 06:48:16,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:16,252 INFO L93 Difference]: Finished difference Result 2041 states and 6856 transitions. [2021-06-05 06:48:16,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 06:48:16,252 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:16,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:16,255 INFO L225 Difference]: With dead ends: 2041 [2021-06-05 06:48:16,255 INFO L226 Difference]: Without dead ends: 2016 [2021-06-05 06:48:16,256 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1170.6ms TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:48:16,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2021-06-05 06:48:16,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1816. [2021-06-05 06:48:16,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1816 states, 1815 states have (on average 3.41763085399449) internal successors, (6203), 1815 states have internal predecessors, (6203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:16,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 6203 transitions. [2021-06-05 06:48:16,276 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 6203 transitions. Word has length 26 [2021-06-05 06:48:16,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:16,277 INFO L482 AbstractCegarLoop]: Abstraction has 1816 states and 6203 transitions. [2021-06-05 06:48:16,277 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:16,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 6203 transitions. [2021-06-05 06:48:16,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:16,279 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:16,279 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:16,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2861 [2021-06-05 06:48:16,479 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:16,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:16,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1247883966, now seen corresponding path program 40 times [2021-06-05 06:48:16,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:16,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592449031] [2021-06-05 06:48:16,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:16,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:16,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:16,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592449031] [2021-06-05 06:48:16,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592449031] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:16,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127872361] [2021-06-05 06:48:16,739 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:16,763 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:48:16,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:16,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:48:16,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:17,064 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-06-05 06:48:17,151 INFO L446 ElimStorePlain]: Different costs {2=[A, v_prenex_232], 3=[v_prenex_233, v_prenex_234]} [2021-06-05 06:48:17,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:17,164 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:17,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:48:17,165 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:17,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:17,175 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:17,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:48:17,177 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:17,304 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 06:48:17,304 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:17,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:17,316 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:17,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:48:17,318 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:17,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:17,327 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:48:17,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:48:17,329 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:17,447 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 06:48:17,448 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:17,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:17,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:17,461 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:48:17,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22 [2021-06-05 06:48:17,462 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:17,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:17,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:17,472 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:17,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 06:48:17,476 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:17,581 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-05 06:48:17,582 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:17,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:17,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:17,593 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:17,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2021-06-05 06:48:17,596 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:17,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:17,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:17,605 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:48:17,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19 [2021-06-05 06:48:17,607 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:17,700 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:17,706 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:48:17,706 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:361, output treesize:194 [2021-06-05 06:48:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:17,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127872361] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:17,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:17,894 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:48:17,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633369900] [2021-06-05 06:48:17,894 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:48:17,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:17,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:48:17,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:48:17,894 INFO L87 Difference]: Start difference. First operand 1816 states and 6203 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:18,163 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2021-06-05 06:48:18,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:18,655 INFO L93 Difference]: Finished difference Result 2323 states and 7788 transitions. [2021-06-05 06:48:18,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 06:48:18,655 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:18,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:18,658 INFO L225 Difference]: With dead ends: 2323 [2021-06-05 06:48:18,658 INFO L226 Difference]: Without dead ends: 2298 [2021-06-05 06:48:18,658 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1082.6ms TimeCoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2021-06-05 06:48:18,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2021-06-05 06:48:18,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 1804. [2021-06-05 06:48:18,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1803 states have (on average 3.4170826400443706) internal successors, (6161), 1803 states have internal predecessors, (6161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 6161 transitions. [2021-06-05 06:48:18,681 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 6161 transitions. Word has length 26 [2021-06-05 06:48:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:18,681 INFO L482 AbstractCegarLoop]: Abstraction has 1804 states and 6161 transitions. [2021-06-05 06:48:18,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:18,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 6161 transitions. [2021-06-05 06:48:18,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:18,683 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:18,683 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:18,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2918,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:18,884 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:18,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:18,884 INFO L82 PathProgramCache]: Analyzing trace with hash 305289786, now seen corresponding path program 41 times [2021-06-05 06:48:18,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:18,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930955418] [2021-06-05 06:48:18,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:19,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:19,147 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:19,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930955418] [2021-06-05 06:48:19,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930955418] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:19,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504366951] [2021-06-05 06:48:19,147 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:19,172 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:48:19,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:19,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:48:19,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:19,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:19,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:19,515 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:19,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:19,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:48:19,520 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:19,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:19,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:48:19,525 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:19,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:19,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:19,530 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:19,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:19,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:48:19,536 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:19,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:19,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:19,541 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:19,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:19,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:19,546 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:19,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:19,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:19,553 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:19,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:19,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:48:19,559 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:19,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:19,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:19,564 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:19,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:19,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 06:48:19,570 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:19,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:19,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:19,575 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:19,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:19,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:48:19,581 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:19,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:19,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:48:19,586 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:19,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:19,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:19,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:19,589 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:19,660 INFO L628 ElimStorePlain]: treesize reduction 25, result has 75.0 percent of original size [2021-06-05 06:48:19,661 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:48:19,661 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:588, output treesize:51 [2021-06-05 06:48:19,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:19,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504366951] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:19,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:19,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:48:19,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157592319] [2021-06-05 06:48:19,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:48:19,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:19,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:48:19,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:48:19,711 INFO L87 Difference]: Start difference. First operand 1804 states and 6161 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:20,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:20,526 INFO L93 Difference]: Finished difference Result 2327 states and 7784 transitions. [2021-06-05 06:48:20,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:48:20,526 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:20,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:20,529 INFO L225 Difference]: With dead ends: 2327 [2021-06-05 06:48:20,529 INFO L226 Difference]: Without dead ends: 2312 [2021-06-05 06:48:20,529 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 998.3ms TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:48:20,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2021-06-05 06:48:20,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 1849. [2021-06-05 06:48:20,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1848 states have (on average 3.411796536796537) internal successors, (6305), 1848 states have internal predecessors, (6305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:20,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 6305 transitions. [2021-06-05 06:48:20,549 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 6305 transitions. Word has length 26 [2021-06-05 06:48:20,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:20,549 INFO L482 AbstractCegarLoop]: Abstraction has 1849 states and 6305 transitions. [2021-06-05 06:48:20,549 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:20,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 6305 transitions. [2021-06-05 06:48:20,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:20,551 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:20,551 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:20,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2950 [2021-06-05 06:48:20,752 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:20,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:20,752 INFO L82 PathProgramCache]: Analyzing trace with hash 137480694, now seen corresponding path program 42 times [2021-06-05 06:48:20,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:20,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91542581] [2021-06-05 06:48:20,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:21,044 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:21,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:21,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91542581] [2021-06-05 06:48:21,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91542581] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:21,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111794817] [2021-06-05 06:48:21,044 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:21,068 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:48:21,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:21,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:48:21,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:21,402 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:48:21,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 06:48:21,402 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:21,410 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:48:21,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:21,411 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:21,418 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:48:21,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:21,419 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:21,427 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:48:21,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:48:21,428 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:21,435 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:48:21,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:48:21,436 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:21,449 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:21,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 06:48:21,451 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:21,458 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:48:21,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:21,459 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:21,466 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:48:21,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:21,467 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:21,481 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:21,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 06:48:21,483 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:21,499 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:48:21,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:48:21,500 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:21,514 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:21,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:48:21,523 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:21,540 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:48:21,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:48:21,542 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:21,549 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:48:21,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:48:21,550 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:21,567 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:48:21,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:48:21,570 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:21,586 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:48:21,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:48:21,587 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:21,601 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:48:21,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 06:48:21,605 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:21,699 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:21,710 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:48:21,710 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:689, output treesize:247 [2021-06-05 06:48:21,889 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-06-05 06:48:21,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:21,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111794817] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:21,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:21,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:48:21,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963911126] [2021-06-05 06:48:21,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:48:21,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:21,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:48:21,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:48:21,997 INFO L87 Difference]: Start difference. First operand 1849 states and 6305 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:22,974 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2021-06-05 06:48:23,123 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2021-06-05 06:48:23,516 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2021-06-05 06:48:23,685 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2021-06-05 06:48:23,926 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 43 [2021-06-05 06:48:23,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:23,961 INFO L93 Difference]: Finished difference Result 2674 states and 8821 transitions. [2021-06-05 06:48:23,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:48:23,961 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:23,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:23,965 INFO L225 Difference]: With dead ends: 2674 [2021-06-05 06:48:23,965 INFO L226 Difference]: Without dead ends: 2644 [2021-06-05 06:48:23,965 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2258.6ms TimeCoverageRelationStatistics Valid=284, Invalid=1198, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:48:23,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2021-06-05 06:48:23,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 1849. [2021-06-05 06:48:23,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1849 states, 1848 states have (on average 3.411796536796537) internal successors, (6305), 1848 states have internal predecessors, (6305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:23,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1849 states to 1849 states and 6305 transitions. [2021-06-05 06:48:23,991 INFO L78 Accepts]: Start accepts. Automaton has 1849 states and 6305 transitions. Word has length 26 [2021-06-05 06:48:23,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:23,991 INFO L482 AbstractCegarLoop]: Abstraction has 1849 states and 6305 transitions. [2021-06-05 06:48:23,991 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:23,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1849 states and 6305 transitions. [2021-06-05 06:48:23,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:23,994 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:23,994 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:24,196 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2982 [2021-06-05 06:48:24,196 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:24,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:24,197 INFO L82 PathProgramCache]: Analyzing trace with hash 436254142, now seen corresponding path program 43 times [2021-06-05 06:48:24,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:24,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655502652] [2021-06-05 06:48:24,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:24,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:24,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655502652] [2021-06-05 06:48:24,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655502652] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:24,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713457091] [2021-06-05 06:48:24,477 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:24,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:48:24,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:24,798 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_238], 3=[A, v_prenex_240, v_prenex_236]} [2021-06-05 06:48:24,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:24,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:24,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:24,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:24,806 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:24,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:24,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:24,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:24,817 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:24,954 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2021-06-05 06:48:24,954 INFO L628 ElimStorePlain]: treesize reduction 158, result has 46.4 percent of original size [2021-06-05 06:48:24,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:24,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:24,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:48:24,960 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,005 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:25,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:48:25,010 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,052 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:25,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:25,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 06:48:25,057 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,095 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:25,097 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:48:25,097 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:335, output treesize:51 [2021-06-05 06:48:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:25,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713457091] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:25,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:25,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:48:25,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560008450] [2021-06-05 06:48:25,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:48:25,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:25,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:48:25,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:48:25,177 INFO L87 Difference]: Start difference. First operand 1849 states and 6305 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:25,891 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2021-06-05 06:48:26,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:26,008 INFO L93 Difference]: Finished difference Result 2432 states and 8093 transitions. [2021-06-05 06:48:26,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:48:26,008 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:26,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:26,012 INFO L225 Difference]: With dead ends: 2432 [2021-06-05 06:48:26,012 INFO L226 Difference]: Without dead ends: 2402 [2021-06-05 06:48:26,012 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 1081.9ms TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:48:26,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2021-06-05 06:48:26,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 1851. [2021-06-05 06:48:26,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1851 states, 1850 states have (on average 3.4135135135135135) internal successors, (6315), 1850 states have internal predecessors, (6315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:26,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 6315 transitions. [2021-06-05 06:48:26,038 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 6315 transitions. Word has length 26 [2021-06-05 06:48:26,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:26,038 INFO L482 AbstractCegarLoop]: Abstraction has 1851 states and 6315 transitions. [2021-06-05 06:48:26,038 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:26,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 6315 transitions. [2021-06-05 06:48:26,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:26,040 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:26,040 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:26,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3032 [2021-06-05 06:48:26,241 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:26,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:26,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1514157122, now seen corresponding path program 44 times [2021-06-05 06:48:26,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:26,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129087463] [2021-06-05 06:48:26,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:26,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:26,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:26,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129087463] [2021-06-05 06:48:26,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129087463] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:26,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284877874] [2021-06-05 06:48:26,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:26,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:48:26,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:26,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:48:26,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:26,905 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-06-05 06:48:27,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:27,099 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:48:27,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:48:27,100 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:27,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:27,119 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:48:27,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:48:27,122 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:27,267 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 06:48:27,268 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:27,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:27,289 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:48:27,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 33 [2021-06-05 06:48:27,290 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:27,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:27,304 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:27,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 37 [2021-06-05 06:48:27,307 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:27,603 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2021-06-05 06:48:27,604 INFO L628 ElimStorePlain]: treesize reduction 8, result has 97.7 percent of original size [2021-06-05 06:48:27,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:27,622 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:48:27,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:48:27,623 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:27,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:27,636 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:27,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:48:27,641 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:27,771 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 06:48:27,771 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:27,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:27,786 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:27,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 32 [2021-06-05 06:48:27,792 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:27,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:27,806 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:48:27,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:48:27,807 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:28,077 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2021-06-05 06:48:28,077 INFO L628 ElimStorePlain]: treesize reduction 9, result has 96.9 percent of original size [2021-06-05 06:48:28,093 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:48:28,093 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:385, output treesize:286 [2021-06-05 06:48:28,283 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2021-06-05 06:48:28,373 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:28,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284877874] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:28,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:28,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2021-06-05 06:48:28,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036891016] [2021-06-05 06:48:28,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:48:28,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:28,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:48:28,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:48:28,374 INFO L87 Difference]: Start difference. First operand 1851 states and 6315 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:28,631 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2021-06-05 06:48:28,887 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2021-06-05 06:48:29,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:29,316 INFO L93 Difference]: Finished difference Result 2442 states and 8174 transitions. [2021-06-05 06:48:29,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 06:48:29,316 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:29,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:29,319 INFO L225 Difference]: With dead ends: 2442 [2021-06-05 06:48:29,320 INFO L226 Difference]: Without dead ends: 2427 [2021-06-05 06:48:29,320 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1515.4ms TimeCoverageRelationStatistics Valid=145, Invalid=455, Unknown=0, NotChecked=0, Total=600 [2021-06-05 06:48:29,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2427 states. [2021-06-05 06:48:29,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 1869. [2021-06-05 06:48:29,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1868 states have (on average 3.4095289079229123) internal successors, (6369), 1868 states have internal predecessors, (6369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:29,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 6369 transitions. [2021-06-05 06:48:29,343 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 6369 transitions. Word has length 26 [2021-06-05 06:48:29,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:29,343 INFO L482 AbstractCegarLoop]: Abstraction has 1869 states and 6369 transitions. [2021-06-05 06:48:29,343 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:29,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 6369 transitions. [2021-06-05 06:48:29,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:29,345 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:29,345 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:29,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3043,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:29,545 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:29,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:29,546 INFO L82 PathProgramCache]: Analyzing trace with hash -714815838, now seen corresponding path program 45 times [2021-06-05 06:48:29,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:29,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905092553] [2021-06-05 06:48:29,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:29,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:29,772 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:29,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905092553] [2021-06-05 06:48:29,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905092553] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:29,772 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321499777] [2021-06-05 06:48:29,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:29,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:48:29,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:29,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:48:29,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:30,184 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 06:48:30,430 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 55 [2021-06-05 06:48:30,508 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_256, v_prenex_257], 2=[A, v_prenex_258]} [2021-06-05 06:48:30,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:30,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:48:30,514 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:30,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:30,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:48:30,520 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:30,648 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2021-06-05 06:48:30,648 INFO L628 ElimStorePlain]: treesize reduction 130, result has 54.7 percent of original size [2021-06-05 06:48:30,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:30,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-05 06:48:30,653 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:30,702 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:30,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:30,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:30,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:30,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:48:30,708 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:30,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:30,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:30,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:30,713 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:30,754 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:30,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:30,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:30,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:30,758 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:30,794 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:30,796 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:48:30,797 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:317, output treesize:51 [2021-06-05 06:48:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:30,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321499777] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:30,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:30,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:48:30,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592727043] [2021-06-05 06:48:30,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:48:30,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:30,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:48:30,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:48:30,850 INFO L87 Difference]: Start difference. First operand 1869 states and 6369 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:31,527 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 06:48:31,765 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 80 [2021-06-05 06:48:31,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:31,904 INFO L93 Difference]: Finished difference Result 1982 states and 6684 transitions. [2021-06-05 06:48:31,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:48:31,904 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:31,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:31,906 INFO L225 Difference]: With dead ends: 1982 [2021-06-05 06:48:31,906 INFO L226 Difference]: Without dead ends: 1967 [2021-06-05 06:48:31,907 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1394.1ms TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:48:31,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2021-06-05 06:48:31,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1890. [2021-06-05 06:48:31,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1889 states have (on average 3.4060349391212283) internal successors, (6434), 1889 states have internal predecessors, (6434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:31,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 6434 transitions. [2021-06-05 06:48:31,926 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 6434 transitions. Word has length 26 [2021-06-05 06:48:31,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:31,927 INFO L482 AbstractCegarLoop]: Abstraction has 1890 states and 6434 transitions. [2021-06-05 06:48:31,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:31,927 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 6434 transitions. [2021-06-05 06:48:31,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:31,929 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:31,929 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:32,129 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3104 [2021-06-05 06:48:32,129 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:32,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:32,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1962618678, now seen corresponding path program 46 times [2021-06-05 06:48:32,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:32,130 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468907920] [2021-06-05 06:48:32,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:32,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:32,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:32,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468907920] [2021-06-05 06:48:32,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468907920] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:32,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786018845] [2021-06-05 06:48:32,332 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:32,356 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:48:32,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:32,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:48:32,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:32,778 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 06:48:32,857 INFO L446 ElimStorePlain]: Different costs {2=[A, v_prenex_270, v_prenex_264, v_prenex_266], 3=[v_prenex_271, v_prenex_273, v_prenex_265, v_prenex_268]} [2021-06-05 06:48:32,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:32,871 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:32,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:48:32,873 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:32,988 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2021-06-05 06:48:32,988 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:32,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:33,001 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:33,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:48:33,002 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:33,116 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-05 06:48:33,116 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:33,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:33,129 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:48:33,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:48:33,131 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:33,240 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-05 06:48:33,240 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:33,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:33,252 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:33,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:48:33,253 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:33,362 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-06-05 06:48:33,362 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:33,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:33,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:33,374 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:33,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2021-06-05 06:48:33,377 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:33,481 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 06:48:33,481 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:33,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:33,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:33,492 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:33,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 06:48:33,495 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:33,594 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:33,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:33,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:33,605 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:48:33,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19 [2021-06-05 06:48:33,607 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:33,699 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:33,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:33,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:33,709 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:48:33,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22 [2021-06-05 06:48:33,711 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:33,798 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:33,805 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:48:33,805 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:345, output treesize:194 [2021-06-05 06:48:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:33,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786018845] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:33,988 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:33,988 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:48:33,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486594548] [2021-06-05 06:48:33,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:48:33,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:33,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:48:33,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:48:33,989 INFO L87 Difference]: Start difference. First operand 1890 states and 6434 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:34,665 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 06:48:35,036 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2021-06-05 06:48:35,236 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2021-06-05 06:48:35,439 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 43 [2021-06-05 06:48:35,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:35,531 INFO L93 Difference]: Finished difference Result 2744 states and 9064 transitions. [2021-06-05 06:48:35,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 06:48:35,532 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:35,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:35,536 INFO L225 Difference]: With dead ends: 2744 [2021-06-05 06:48:35,536 INFO L226 Difference]: Without dead ends: 2714 [2021-06-05 06:48:35,537 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1904.4ms TimeCoverageRelationStatistics Valid=217, Invalid=775, Unknown=0, NotChecked=0, Total=992 [2021-06-05 06:48:35,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2714 states. [2021-06-05 06:48:35,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2714 to 1888. [2021-06-05 06:48:35,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 3.408055113937467) internal successors, (6431), 1887 states have internal predecessors, (6431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:35,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 6431 transitions. [2021-06-05 06:48:35,563 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 6431 transitions. Word has length 26 [2021-06-05 06:48:35,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:35,563 INFO L482 AbstractCegarLoop]: Abstraction has 1888 states and 6431 transitions. [2021-06-05 06:48:35,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:35,563 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 6431 transitions. [2021-06-05 06:48:35,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:35,566 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:35,566 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:35,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3119,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:35,777 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:35,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:35,777 INFO L82 PathProgramCache]: Analyzing trace with hash 272675774, now seen corresponding path program 47 times [2021-06-05 06:48:35,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:35,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749591986] [2021-06-05 06:48:35,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:36,095 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:36,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:36,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749591986] [2021-06-05 06:48:36,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749591986] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:36,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679740176] [2021-06-05 06:48:36,095 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:36,121 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:48:36,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:36,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:48:36,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:36,515 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-06-05 06:48:36,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:36,636 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:36,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:48:36,641 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:36,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:36,652 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:48:36,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:48:36,654 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:36,775 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 06:48:36,776 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:36,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:36,789 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:36,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:48:36,791 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:36,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:36,801 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:36,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:48:36,812 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:36,961 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 06:48:36,962 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:36,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:36,972 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:36,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:48:36,976 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:36,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:36,985 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:48:36,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:48:36,986 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:37,088 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-05 06:48:37,088 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:37,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:37,099 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:37,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:48:37,100 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:37,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:37,109 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:48:37,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:48:37,110 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:37,198 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:37,214 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:48:37,214 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:333, output treesize:174 [2021-06-05 06:48:37,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:37,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679740176] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:37,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:37,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:48:37,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942906221] [2021-06-05 06:48:37,390 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:48:37,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:37,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:48:37,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:48:37,391 INFO L87 Difference]: Start difference. First operand 1888 states and 6431 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:38,222 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-06-05 06:48:38,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:38,274 INFO L93 Difference]: Finished difference Result 2422 states and 8105 transitions. [2021-06-05 06:48:38,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 06:48:38,274 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:38,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:38,278 INFO L225 Difference]: With dead ends: 2422 [2021-06-05 06:48:38,278 INFO L226 Difference]: Without dead ends: 2397 [2021-06-05 06:48:38,278 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1267.7ms TimeCoverageRelationStatistics Valid=162, Invalid=594, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:48:38,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2397 states. [2021-06-05 06:48:38,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2397 to 1888. [2021-06-05 06:48:38,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 3.4101748807631163) internal successors, (6435), 1887 states have internal predecessors, (6435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:38,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 6435 transitions. [2021-06-05 06:48:38,299 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 6435 transitions. Word has length 26 [2021-06-05 06:48:38,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:38,300 INFO L482 AbstractCegarLoop]: Abstraction has 1888 states and 6435 transitions. [2021-06-05 06:48:38,300 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:38,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 6435 transitions. [2021-06-05 06:48:38,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:38,302 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:38,302 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:38,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3136,102 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:38,504 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:38,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:38,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1537750790, now seen corresponding path program 48 times [2021-06-05 06:48:38,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:38,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838031378] [2021-06-05 06:48:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:38,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:38,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:38,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838031378] [2021-06-05 06:48:38,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838031378] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:38,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967357025] [2021-06-05 06:48:38,796 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:38,821 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:48:38,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:38,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:48:38,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:39,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,006 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:48:39,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:48:39,007 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,014 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:48:39,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:48:39,015 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,024 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:39,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:48:39,026 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,034 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:48:39,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:39,034 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,044 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:39,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:48:39,047 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,057 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:39,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:48:39,058 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,066 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:48:39,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:39,066 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,074 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:48:39,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 22 [2021-06-05 06:48:39,075 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,085 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:39,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:48:39,088 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,098 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:39,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:48:39,099 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,107 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:48:39,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:48:39,108 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,116 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:48:39,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:39,116 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,126 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:48:39,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:48:39,138 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,150 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:48:39,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:48:39,152 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,164 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:48:39,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:48:39,166 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:39,172 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:48:39,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:48:39,173 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:39,240 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:39,242 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:48:39,242 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:609, output treesize:165 [2021-06-05 06:48:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:39,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967357025] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:39,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:39,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:48:39,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162625288] [2021-06-05 06:48:39,444 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:48:39,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:39,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:48:39,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:48:39,444 INFO L87 Difference]: Start difference. First operand 1888 states and 6435 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:40,217 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 30 [2021-06-05 06:48:40,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:40,273 INFO L93 Difference]: Finished difference Result 2430 states and 8144 transitions. [2021-06-05 06:48:40,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 06:48:40,273 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:40,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:40,276 INFO L225 Difference]: With dead ends: 2430 [2021-06-05 06:48:40,276 INFO L226 Difference]: Without dead ends: 2415 [2021-06-05 06:48:40,276 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1068.8ms TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:48:40,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2021-06-05 06:48:40,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 1888. [2021-06-05 06:48:40,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 3.4101748807631163) internal successors, (6435), 1887 states have internal predecessors, (6435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:40,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 6435 transitions. [2021-06-05 06:48:40,299 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 6435 transitions. Word has length 26 [2021-06-05 06:48:40,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:40,299 INFO L482 AbstractCegarLoop]: Abstraction has 1888 states and 6435 transitions. [2021-06-05 06:48:40,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:40,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 6435 transitions. [2021-06-05 06:48:40,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:40,301 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:40,301 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:40,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3169,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:40,502 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:40,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:40,502 INFO L82 PathProgramCache]: Analyzing trace with hash -1872442310, now seen corresponding path program 55 times [2021-06-05 06:48:40,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:40,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332050728] [2021-06-05 06:48:40,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:40,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:40,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332050728] [2021-06-05 06:48:40,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332050728] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:40,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906243120] [2021-06-05 06:48:40,971 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:40,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:48:40,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:41,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:48:41,462 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,467 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:48:41,469 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:48:41,476 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 06:48:41,483 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:48:41,490 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:48:41,497 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:48:41,504 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:48:41,511 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:48:41,518 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:48:41,525 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:48:41,532 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 06:48:41,539 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:48:41,548 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:48:41,554 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:48:41,558 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,582 INFO L628 ElimStorePlain]: treesize reduction 34, result has 44.3 percent of original size [2021-06-05 06:48:41,583 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:48:41,583 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 06:48:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:41,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906243120] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:41,610 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:41,610 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 06:48:41,610 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078691564] [2021-06-05 06:48:41,610 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:48:41,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:41,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:48:41,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:48:41,610 INFO L87 Difference]: Start difference. First operand 1888 states and 6435 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:42,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:42,251 INFO L93 Difference]: Finished difference Result 2457 states and 7898 transitions. [2021-06-05 06:48:42,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:48:42,252 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:42,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:42,255 INFO L225 Difference]: With dead ends: 2457 [2021-06-05 06:48:42,255 INFO L226 Difference]: Without dead ends: 2420 [2021-06-05 06:48:42,255 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 994.9ms TimeCoverageRelationStatistics Valid=220, Invalid=902, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:48:42,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2021-06-05 06:48:42,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 1914. [2021-06-05 06:48:42,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1913 states have (on average 3.410350235232619) internal successors, (6524), 1913 states have internal predecessors, (6524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:42,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 6524 transitions. [2021-06-05 06:48:42,279 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 6524 transitions. Word has length 26 [2021-06-05 06:48:42,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:42,279 INFO L482 AbstractCegarLoop]: Abstraction has 1914 states and 6524 transitions. [2021-06-05 06:48:42,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:42,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 6524 transitions. [2021-06-05 06:48:42,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:42,281 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:42,282 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:42,482 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3186 [2021-06-05 06:48:42,482 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:42,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:42,482 INFO L82 PathProgramCache]: Analyzing trace with hash -804567746, now seen corresponding path program 56 times [2021-06-05 06:48:42,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:42,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557228426] [2021-06-05 06:48:42,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:42,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:42,759 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:42,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:42,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557228426] [2021-06-05 06:48:42,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557228426] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:42,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334337341] [2021-06-05 06:48:42,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:42,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:48:42,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:42,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:48:42,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:43,043 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2021-06-05 06:48:43,091 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_283, v_prenex_285], 6=[A, v_prenex_287]} [2021-06-05 06:48:43,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:43,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:43,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:43,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 13 [2021-06-05 06:48:43,098 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:43,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:43,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:43,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-05 06:48:43,104 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:43,203 INFO L628 ElimStorePlain]: treesize reduction 166, result has 44.9 percent of original size [2021-06-05 06:48:43,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:43,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-06-05 06:48:43,208 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:43,240 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:43,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:43,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:43,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-05 06:48:43,245 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:43,274 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:43,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:43,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:43,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:43,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-05 06:48:43,279 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:43,305 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:43,307 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 06:48:43,307 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:365, output treesize:33 [2021-06-05 06:48:43,349 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:43,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334337341] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:43,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:43,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-06-05 06:48:43,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636141560] [2021-06-05 06:48:43,349 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:48:43,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:43,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:48:43,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:48:43,349 INFO L87 Difference]: Start difference. First operand 1914 states and 6524 transitions. Second operand has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:44,203 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2021-06-05 06:48:44,363 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2021-06-05 06:48:44,506 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2021-06-05 06:48:44,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:44,615 INFO L93 Difference]: Finished difference Result 2392 states and 7936 transitions. [2021-06-05 06:48:44,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 06:48:44,615 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:44,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:44,619 INFO L225 Difference]: With dead ends: 2392 [2021-06-05 06:48:44,619 INFO L226 Difference]: Without dead ends: 2346 [2021-06-05 06:48:44,619 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 1374.3ms TimeCoverageRelationStatistics Valid=256, Invalid=866, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:48:44,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2021-06-05 06:48:44,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 1910. [2021-06-05 06:48:44,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1909 states have (on average 3.4038763750654795) internal successors, (6498), 1909 states have internal predecessors, (6498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:44,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 6498 transitions. [2021-06-05 06:48:44,641 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 6498 transitions. Word has length 26 [2021-06-05 06:48:44,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:44,641 INFO L482 AbstractCegarLoop]: Abstraction has 1910 states and 6498 transitions. [2021-06-05 06:48:44,641 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:44,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 6498 transitions. [2021-06-05 06:48:44,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:44,643 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:44,643 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:44,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3300,105 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:44,844 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:44,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:44,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1833133118, now seen corresponding path program 57 times [2021-06-05 06:48:44,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:44,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131148946] [2021-06-05 06:48:44,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:45,181 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:45,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:45,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131148946] [2021-06-05 06:48:45,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131148946] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:45,181 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132078682] [2021-06-05 06:48:45,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:45,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:48:45,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:45,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:48:45,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:45,676 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 06:48:45,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:45,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:45,964 INFO L354 Elim1Store]: treesize reduction 4, result has 86.2 percent of original size [2021-06-05 06:48:45,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43 [2021-06-05 06:48:45,967 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:45,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:45,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:45,994 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 06:48:45,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2021-06-05 06:48:45,998 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:46,354 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2021-06-05 06:48:46,354 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:46,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:46,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:46,389 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:48:46,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 35 [2021-06-05 06:48:46,391 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:46,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:46,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:46,416 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:48:46,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 28 [2021-06-05 06:48:46,418 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:46,768 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2021-06-05 06:48:46,768 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:46,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:46,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:46,800 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:46,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 47 [2021-06-05 06:48:46,805 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:46,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:46,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:46,820 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:48:46,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 06:48:46,821 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:47,132 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2021-06-05 06:48:47,132 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:47,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:47,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:47,164 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:48:47,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 35 [2021-06-05 06:48:47,166 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:47,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:47,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:47,189 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:48:47,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 28 [2021-06-05 06:48:47,191 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:47,484 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-06-05 06:48:47,484 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:47,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:47,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:47,515 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:47,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 47 [2021-06-05 06:48:47,537 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:47,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:47,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:47,564 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:48:47,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 35 [2021-06-05 06:48:47,568 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:48,367 WARN L205 SmtUtils]: Spent 798.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 124 [2021-06-05 06:48:48,367 INFO L628 ElimStorePlain]: treesize reduction 40, result has 93.4 percent of original size [2021-06-05 06:48:48,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:48,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:48,398 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:48:48,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 35 [2021-06-05 06:48:48,402 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:48,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:48,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:48,415 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:48:48,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:48:48,415 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:48,635 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 06:48:48,636 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:48,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:48,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:48,712 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:48:48,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 28 [2021-06-05 06:48:48,714 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:48,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:48,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:48,738 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:48:48,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:48:48,743 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:49,119 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 99 [2021-06-05 06:48:49,119 INFO L628 ElimStorePlain]: treesize reduction 33, result has 92.7 percent of original size [2021-06-05 06:48:49,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:49,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:49,143 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:48:49,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 26 [2021-06-05 06:48:49,145 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:49,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:49,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:49,164 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:49,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-05 06:48:49,171 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:49,349 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-05 06:48:49,349 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:49,361 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 13 xjuncts. [2021-06-05 06:48:49,361 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:801, output treesize:348 [2021-06-05 06:48:49,517 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 24 [2021-06-05 06:48:49,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:49,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132078682] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:49,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:49,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2021-06-05 06:48:49,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677526142] [2021-06-05 06:48:49,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:48:49,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:49,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:48:49,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:48:49,542 INFO L87 Difference]: Start difference. First operand 1910 states and 6498 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:51,412 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-05 06:48:51,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:51,705 INFO L93 Difference]: Finished difference Result 2172 states and 7282 transitions. [2021-06-05 06:48:51,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:48:51,705 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:51,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:51,715 INFO L225 Difference]: With dead ends: 2172 [2021-06-05 06:48:51,715 INFO L226 Difference]: Without dead ends: 2157 [2021-06-05 06:48:51,715 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 1657.2ms TimeCoverageRelationStatistics Valid=197, Invalid=925, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:48:51,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2021-06-05 06:48:51,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 1922. [2021-06-05 06:48:51,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1922 states, 1921 states have (on average 3.407600208224883) internal successors, (6546), 1921 states have internal predecessors, (6546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:51,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1922 states to 1922 states and 6546 transitions. [2021-06-05 06:48:51,736 INFO L78 Accepts]: Start accepts. Automaton has 1922 states and 6546 transitions. Word has length 26 [2021-06-05 06:48:51,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:51,736 INFO L482 AbstractCegarLoop]: Abstraction has 1922 states and 6546 transitions. [2021-06-05 06:48:51,736 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:51,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1922 states and 6546 transitions. [2021-06-05 06:48:51,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:51,738 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:51,738 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:51,939 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3314,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:51,939 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:51,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:51,940 INFO L82 PathProgramCache]: Analyzing trace with hash 179857598, now seen corresponding path program 49 times [2021-06-05 06:48:51,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:51,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385655002] [2021-06-05 06:48:51,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:52,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:52,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:52,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385655002] [2021-06-05 06:48:52,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385655002] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:52,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331858008] [2021-06-05 06:48:52,342 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:52,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:48:52,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:52,704 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 37 [2021-06-05 06:48:52,735 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_307, v_prenex_309]} [2021-06-05 06:48:52,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:52,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:48:52,739 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:52,841 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-06-05 06:48:52,841 INFO L628 ElimStorePlain]: treesize reduction 54, result has 69.8 percent of original size [2021-06-05 06:48:52,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:52,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:52,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:52,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:52,848 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:52,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:52,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:52,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:48:52,852 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:52,890 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:52,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:52,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:52,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:52,894 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:52,927 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:52,929 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:48:52,929 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:193, output treesize:51 [2021-06-05 06:48:53,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:53,018 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331858008] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:53,018 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:53,018 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:48:53,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064677128] [2021-06-05 06:48:53,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:48:53,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:53,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:48:53,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:48:53,033 INFO L87 Difference]: Start difference. First operand 1922 states and 6546 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:53,599 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 47 [2021-06-05 06:48:53,940 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 06:48:54,106 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2021-06-05 06:48:54,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:54,271 INFO L93 Difference]: Finished difference Result 2493 states and 8257 transitions. [2021-06-05 06:48:54,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:48:54,271 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:54,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:54,275 INFO L225 Difference]: With dead ends: 2493 [2021-06-05 06:48:54,275 INFO L226 Difference]: Without dead ends: 2478 [2021-06-05 06:48:54,275 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1554.6ms TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:48:54,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2021-06-05 06:48:54,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 1933. [2021-06-05 06:48:54,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1932 states have (on average 3.4078674948240164) internal successors, (6584), 1932 states have internal predecessors, (6584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:54,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 6584 transitions. [2021-06-05 06:48:54,298 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 6584 transitions. Word has length 26 [2021-06-05 06:48:54,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:54,299 INFO L482 AbstractCegarLoop]: Abstraction has 1933 states and 6584 transitions. [2021-06-05 06:48:54,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:54,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 6584 transitions. [2021-06-05 06:48:54,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:54,301 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:54,301 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:54,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3383,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:54,501 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:54,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:54,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1730239162, now seen corresponding path program 58 times [2021-06-05 06:48:54,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:54,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119392932] [2021-06-05 06:48:54,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:54,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:54,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119392932] [2021-06-05 06:48:54,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119392932] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:54,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978485703] [2021-06-05 06:48:54,805 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:54,829 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:48:54,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:54,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:48:54,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:55,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,336 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:48:55,338 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:48:55,345 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:48:55,352 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,357 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:48:55,359 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:48:55,366 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:48:55,374 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:48:55,380 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:48:55,388 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:48:55,394 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:48:55,402 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 06:48:55,409 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:48:55,416 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:48:55,423 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:48:55,429 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 06:48:55,433 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,457 INFO L628 ElimStorePlain]: treesize reduction 34, result has 44.3 percent of original size [2021-06-05 06:48:55,458 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:48:55,459 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 06:48:55,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:55,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978485703] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:55,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:55,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-06-05 06:48:55,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415830601] [2021-06-05 06:48:55,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:48:55,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:55,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:48:55,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:48:55,486 INFO L87 Difference]: Start difference. First operand 1933 states and 6584 transitions. Second operand has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:55,971 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2021-06-05 06:48:56,290 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2021-06-05 06:48:56,848 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 06:48:57,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:57,213 INFO L93 Difference]: Finished difference Result 3085 states and 9838 transitions. [2021-06-05 06:48:57,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:48:57,213 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:48:57,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:57,217 INFO L225 Difference]: With dead ends: 3085 [2021-06-05 06:48:57,217 INFO L226 Difference]: Without dead ends: 3042 [2021-06-05 06:48:57,217 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 1682.4ms TimeCoverageRelationStatistics Valid=298, Invalid=1262, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 06:48:57,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2021-06-05 06:48:57,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 2025. [2021-06-05 06:48:57,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2025 states, 2024 states have (on average 3.4234189723320156) internal successors, (6929), 2024 states have internal predecessors, (6929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:57,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2025 states to 2025 states and 6929 transitions. [2021-06-05 06:48:57,245 INFO L78 Accepts]: Start accepts. Automaton has 2025 states and 6929 transitions. Word has length 26 [2021-06-05 06:48:57,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:57,245 INFO L482 AbstractCegarLoop]: Abstraction has 2025 states and 6929 transitions. [2021-06-05 06:48:57,245 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.7222222222222223) internal successors, (49), 17 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:57,245 INFO L276 IsEmpty]: Start isEmpty. Operand 2025 states and 6929 transitions. [2021-06-05 06:48:57,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:48:57,247 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:57,247 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:48:57,447 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3392 [2021-06-05 06:48:57,448 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:57,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:57,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1769727974, now seen corresponding path program 50 times [2021-06-05 06:48:57,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:57,448 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782785029] [2021-06-05 06:48:57,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:57,855 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:48:57,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:57,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782785029] [2021-06-05 06:48:57,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782785029] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:57,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979370077] [2021-06-05 06:48:57,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:57,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:48:57,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:57,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:48:57,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:58,376 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 06:48:58,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:58,972 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:48:58,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:48:58,974 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:59,136 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-06-05 06:48:59,136 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:59,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:59,156 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:59,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 06:48:59,157 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:59,312 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2021-06-05 06:48:59,312 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:59,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:59,337 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:48:59,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:48:59,340 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:59,491 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2021-06-05 06:48:59,491 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:59,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:59,511 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:59,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 06:48:59,514 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:59,662 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-06-05 06:48:59,662 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:59,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:59,683 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:48:59,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:48:59,685 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:59,830 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2021-06-05 06:48:59,830 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:59,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:59,853 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:48:59,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 28 [2021-06-05 06:48:59,856 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:00,006 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-06-05 06:49:00,006 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:00,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:00,022 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:00,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:49:00,028 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:00,162 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-06-05 06:49:00,162 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:00,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:00,183 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:49:00,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:49:00,185 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:00,318 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 06:49:00,318 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:00,340 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:49:00,340 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 24 variables, input treesize:381, output treesize:513 [2021-06-05 06:49:00,684 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-05 06:49:00,954 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2021-06-05 06:49:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:01,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979370077] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:01,071 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:01,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:49:01,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597881384] [2021-06-05 06:49:01,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:49:01,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:01,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:49:01,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:49:01,071 INFO L87 Difference]: Start difference. First operand 2025 states and 6929 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:01,953 WARN L205 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2021-06-05 06:49:02,691 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2021-06-05 06:49:03,312 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2021-06-05 06:49:03,559 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2021-06-05 06:49:04,050 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 120 [2021-06-05 06:49:04,542 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 94 [2021-06-05 06:49:05,037 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 119 [2021-06-05 06:49:05,571 WARN L205 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 138 [2021-06-05 06:49:05,963 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2021-06-05 06:49:06,499 WARN L205 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 140 [2021-06-05 06:49:06,866 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 84 [2021-06-05 06:49:07,355 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2021-06-05 06:49:07,846 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 69 [2021-06-05 06:49:08,171 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 41 [2021-06-05 06:49:08,777 WARN L205 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 91 [2021-06-05 06:49:09,091 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 42 [2021-06-05 06:49:09,538 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 57 [2021-06-05 06:49:09,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:49:09,638 INFO L93 Difference]: Finished difference Result 2870 states and 9420 transitions. [2021-06-05 06:49:09,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 06:49:09,639 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:49:09,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:49:09,642 INFO L225 Difference]: With dead ends: 2870 [2021-06-05 06:49:09,642 INFO L226 Difference]: Without dead ends: 2855 [2021-06-05 06:49:09,643 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 8845.6ms TimeCoverageRelationStatistics Valid=408, Invalid=2142, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:49:09,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2855 states. [2021-06-05 06:49:09,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2855 to 2033. [2021-06-05 06:49:09,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 2032 states have (on average 3.4247047244094486) internal successors, (6959), 2032 states have internal predecessors, (6959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:09,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 6959 transitions. [2021-06-05 06:49:09,668 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 6959 transitions. Word has length 26 [2021-06-05 06:49:09,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:49:09,669 INFO L482 AbstractCegarLoop]: Abstraction has 2033 states and 6959 transitions. [2021-06-05 06:49:09,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:09,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 6959 transitions. [2021-06-05 06:49:09,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:49:09,671 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:49:09,671 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:49:09,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3498,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:09,871 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:49:09,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:49:09,872 INFO L82 PathProgramCache]: Analyzing trace with hash 719147274, now seen corresponding path program 51 times [2021-06-05 06:49:09,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:49:09,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95908818] [2021-06-05 06:49:09,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:49:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:10,145 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2021-06-05 06:49:10,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:10,317 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:49:10,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95908818] [2021-06-05 06:49:10,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95908818] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:10,317 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747133996] [2021-06-05 06:49:10,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:10,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:49:10,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:49:10,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:49:10,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:49:10,633 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-05 06:49:10,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:10,687 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:10,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:49:10,688 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:10,799 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-05 06:49:10,800 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:10,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:10,812 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:49:10,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:49:10,813 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:10,920 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-05 06:49:10,920 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:10,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:10,932 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:49:10,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:49:10,933 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:11,045 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-06-05 06:49:11,045 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:11,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:11,056 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:49:11,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:49:11,057 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:11,159 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-05 06:49:11,159 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:11,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:11,170 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:11,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:49:11,172 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:11,271 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:11,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:11,282 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:11,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:49:11,283 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:11,386 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-05 06:49:11,387 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:11,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:11,396 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:11,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:49:11,399 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:11,493 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:11,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:11,502 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:11,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:49:11,506 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:11,591 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:11,596 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:49:11,596 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174 [2021-06-05 06:49:11,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:11,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747133996] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:11,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:11,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:49:11,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280266849] [2021-06-05 06:49:11,768 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:49:11,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:11,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:49:11,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:49:11,768 INFO L87 Difference]: Start difference. First operand 2033 states and 6959 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:12,139 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 06:49:13,062 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2021-06-05 06:49:13,209 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2021-06-05 06:49:13,411 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2021-06-05 06:49:13,584 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2021-06-05 06:49:13,954 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2021-06-05 06:49:14,161 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-06-05 06:49:14,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:49:14,294 INFO L93 Difference]: Finished difference Result 2982 states and 9848 transitions. [2021-06-05 06:49:14,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:49:14,295 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:49:14,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:49:14,298 INFO L225 Difference]: With dead ends: 2982 [2021-06-05 06:49:14,298 INFO L226 Difference]: Without dead ends: 2967 [2021-06-05 06:49:14,299 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2686.3ms TimeCoverageRelationStatistics Valid=300, Invalid=1032, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:49:14,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2021-06-05 06:49:14,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2028. [2021-06-05 06:49:14,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 2027 states have (on average 3.4257523433645782) internal successors, (6944), 2027 states have internal predecessors, (6944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:14,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 6944 transitions. [2021-06-05 06:49:14,325 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 6944 transitions. Word has length 26 [2021-06-05 06:49:14,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:49:14,325 INFO L482 AbstractCegarLoop]: Abstraction has 2028 states and 6944 transitions. [2021-06-05 06:49:14,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:14,326 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 6944 transitions. [2021-06-05 06:49:14,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:49:14,328 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:49:14,328 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:49:14,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3564,110 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:14,528 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:49:14,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:49:14,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1956232686, now seen corresponding path program 59 times [2021-06-05 06:49:14,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:49:14,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531874160] [2021-06-05 06:49:14,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:49:14,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:14,795 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:14,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:49:14,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531874160] [2021-06-05 06:49:14,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531874160] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:14,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227125074] [2021-06-05 06:49:14,795 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-05 06:49:14,823 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:49:14,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:14,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:49:14,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:49:15,253 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-05 06:49:15,607 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 116 [2021-06-05 06:49:15,829 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 66 [2021-06-05 06:49:16,057 INFO L446 ElimStorePlain]: Different costs {20=[v_prenex_385], 27=[A]} [2021-06-05 06:49:16,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:16,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:16,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:16,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:16,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:16,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:49:16,068 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:16,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:16,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:16,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:16,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:16,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:49:16,078 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:16,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:16,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:16,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:16,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:16,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:49:16,088 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:16,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:16,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:16,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:16,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:49:16,096 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:16,235 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-06-05 06:49:16,235 INFO L628 ElimStorePlain]: treesize reduction 114, result has 56.3 percent of original size [2021-06-05 06:49:16,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:16,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-06-05 06:49:16,242 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:16,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:16,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:16,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:49:16,247 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:16,291 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:16,293 INFO L550 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:49:16,293 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 11 variables, input treesize:399, output treesize:89 [2021-06-05 06:49:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:16,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227125074] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:16,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:16,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 18 [2021-06-05 06:49:16,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635683467] [2021-06-05 06:49:16,371 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:49:16,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:16,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:49:16,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:49:16,371 INFO L87 Difference]: Start difference. First operand 2028 states and 6944 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:17,151 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 06:49:17,645 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 97 [2021-06-05 06:49:17,853 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-05 06:49:18,209 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 71 [2021-06-05 06:49:18,644 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2021-06-05 06:49:18,943 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 55 [2021-06-05 06:49:19,340 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2021-06-05 06:49:19,714 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 125 [2021-06-05 06:49:19,964 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 47 [2021-06-05 06:49:20,330 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 60 [2021-06-05 06:49:20,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:49:20,470 INFO L93 Difference]: Finished difference Result 3633 states and 11658 transitions. [2021-06-05 06:49:20,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:49:20,470 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:49:20,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:49:20,475 INFO L225 Difference]: With dead ends: 3633 [2021-06-05 06:49:20,475 INFO L226 Difference]: Without dead ends: 3546 [2021-06-05 06:49:20,476 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 4438.0ms TimeCoverageRelationStatistics Valid=391, Invalid=1679, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:49:20,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3546 states. [2021-06-05 06:49:20,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3546 to 2151. [2021-06-05 06:49:20,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 2150 states have (on average 3.4288372093023254) internal successors, (7372), 2150 states have internal predecessors, (7372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:20,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 7372 transitions. [2021-06-05 06:49:20,511 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 7372 transitions. Word has length 26 [2021-06-05 06:49:20,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:49:20,511 INFO L482 AbstractCegarLoop]: Abstraction has 2151 states and 7372 transitions. [2021-06-05 06:49:20,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 18 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:20,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 7372 transitions. [2021-06-05 06:49:20,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:49:20,513 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:49:20,513 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:49:20,713 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3579,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:20,714 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:49:20,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:49:20,714 INFO L82 PathProgramCache]: Analyzing trace with hash -505085958, now seen corresponding path program 60 times [2021-06-05 06:49:20,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:49:20,714 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480319524] [2021-06-05 06:49:20,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:49:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:20,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:20,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:49:20,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480319524] [2021-06-05 06:49:20,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480319524] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:20,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980852382] [2021-06-05 06:49:20,971 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:21,009 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:49:21,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:49:21,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:49:21,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:49:21,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,267 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:21,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 53 [2021-06-05 06:49:21,278 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-06-05 06:49:21,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,313 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:49:21,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 44 [2021-06-05 06:49:21,318 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:21,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,365 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:49:21,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 40 [2021-06-05 06:49:21,369 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:21,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,412 INFO L354 Elim1Store]: treesize reduction 10, result has 75.6 percent of original size [2021-06-05 06:49:21,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 49 [2021-06-05 06:49:21,418 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:21,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,447 INFO L354 Elim1Store]: treesize reduction 29, result has 29.3 percent of original size [2021-06-05 06:49:21,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 27 [2021-06-05 06:49:21,448 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:21,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,465 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:49:21,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 06:49:21,466 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:21,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,483 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:49:21,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 36 treesize of output 1 [2021-06-05 06:49:21,484 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:21,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,502 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:49:21,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 06:49:21,502 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:21,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,519 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:49:21,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 1 [2021-06-05 06:49:21,520 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:21,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,537 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:49:21,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 06:49:21,537 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:21,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,554 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:49:21,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 06:49:21,555 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:21,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,572 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:49:21,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 1 [2021-06-05 06:49:21,572 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:21,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,589 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:49:21,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 06:49:21,590 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:21,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,630 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2021-06-05 06:49:21,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 20 [2021-06-05 06:49:21,631 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:21,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:21,649 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:49:21,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 06:49:21,649 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:21,653 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 06:49:21,654 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:21,751 INFO L628 ElimStorePlain]: treesize reduction 130, result has 42.2 percent of original size [2021-06-05 06:49:21,752 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:49:21,752 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:833, output treesize:95 [2021-06-05 06:49:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:21,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980852382] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:21,915 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:21,915 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-06-05 06:49:21,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736127140] [2021-06-05 06:49:21,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:49:21,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:21,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:49:21,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:49:21,916 INFO L87 Difference]: Start difference. First operand 2151 states and 7372 transitions. Second operand has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:23,193 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 44 [2021-06-05 06:49:23,575 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 06:49:23,795 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2021-06-05 06:49:24,128 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2021-06-05 06:49:24,411 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2021-06-05 06:49:24,823 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2021-06-05 06:49:25,305 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 36 [2021-06-05 06:49:25,472 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2021-06-05 06:49:25,804 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2021-06-05 06:49:25,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:49:25,915 INFO L93 Difference]: Finished difference Result 3952 states and 12614 transitions. [2021-06-05 06:49:25,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:49:25,915 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:49:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:49:25,920 INFO L225 Difference]: With dead ends: 3952 [2021-06-05 06:49:25,920 INFO L226 Difference]: Without dead ends: 3864 [2021-06-05 06:49:25,920 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 932 ImplicationChecksByTransitivity, 3640.0ms TimeCoverageRelationStatistics Valid=560, Invalid=2980, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:49:25,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3864 states. [2021-06-05 06:49:25,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3864 to 2137. [2021-06-05 06:49:25,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 2136 states have (on average 3.431179775280899) internal successors, (7329), 2136 states have internal predecessors, (7329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:25,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 7329 transitions. [2021-06-05 06:49:25,951 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 7329 transitions. Word has length 26 [2021-06-05 06:49:25,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:49:25,951 INFO L482 AbstractCegarLoop]: Abstraction has 2137 states and 7329 transitions. [2021-06-05 06:49:25,951 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:25,951 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 7329 transitions. [2021-06-05 06:49:25,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:49:25,953 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:49:25,954 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:49:26,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3601 [2021-06-05 06:49:26,157 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:49:26,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:49:26,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1912368818, now seen corresponding path program 52 times [2021-06-05 06:49:26,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:49:26,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909129678] [2021-06-05 06:49:26,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:49:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:26,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:26,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:49:26,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909129678] [2021-06-05 06:49:26,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909129678] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:26,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892769014] [2021-06-05 06:49:26,570 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:26,593 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:49:26,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:49:26,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:49:26,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:49:26,923 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 06:49:27,099 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 54 [2021-06-05 06:49:27,157 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_397, v_prenex_398]} [2021-06-05 06:49:27,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:49:27,162 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,265 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2021-06-05 06:49:27,265 INFO L628 ElimStorePlain]: treesize reduction 54, result has 69.8 percent of original size [2021-06-05 06:49:27,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:49:27,270 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,312 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:27,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:49:27,318 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:27,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:27,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:49:27,322 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:27,359 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:27,361 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:49:27,361 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:193, output treesize:51 [2021-06-05 06:49:27,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:27,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892769014] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:27,419 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:27,419 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:49:27,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655101262] [2021-06-05 06:49:27,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:49:27,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:27,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:49:27,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:49:27,420 INFO L87 Difference]: Start difference. First operand 2137 states and 7329 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:28,276 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-06-05 06:49:28,445 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2021-06-05 06:49:28,818 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-05 06:49:29,029 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2021-06-05 06:49:29,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:49:29,153 INFO L93 Difference]: Finished difference Result 2703 states and 9088 transitions. [2021-06-05 06:49:29,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 06:49:29,153 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:49:29,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:49:29,157 INFO L225 Difference]: With dead ends: 2703 [2021-06-05 06:49:29,157 INFO L226 Difference]: Without dead ends: 2688 [2021-06-05 06:49:29,157 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 2081.7ms TimeCoverageRelationStatistics Valid=229, Invalid=961, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:49:29,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2021-06-05 06:49:29,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 2150. [2021-06-05 06:49:29,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 2149 states have (on average 3.4290367612843182) internal successors, (7369), 2149 states have internal predecessors, (7369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:29,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 7369 transitions. [2021-06-05 06:49:29,184 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 7369 transitions. Word has length 26 [2021-06-05 06:49:29,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:49:29,184 INFO L482 AbstractCegarLoop]: Abstraction has 2150 states and 7369 transitions. [2021-06-05 06:49:29,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:29,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 7369 transitions. [2021-06-05 06:49:29,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:49:29,187 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:49:29,187 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:49:29,400 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3636,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:29,401 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:49:29,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:49:29,401 INFO L82 PathProgramCache]: Analyzing trace with hash 294836038, now seen corresponding path program 53 times [2021-06-05 06:49:29,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:49:29,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937070845] [2021-06-05 06:49:29,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:49:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:29,643 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 44 [2021-06-05 06:49:29,770 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2021-06-05 06:49:29,881 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:29,881 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:49:29,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937070845] [2021-06-05 06:49:29,881 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937070845] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:29,881 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649965639] [2021-06-05 06:49:29,881 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:29,905 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:49:29,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:49:29,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:49:29,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:49:30,428 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-05 06:49:30,526 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_421, v_prenex_410, v_prenex_412], 6=[v_prenex_415, v_prenex_405, v_prenex_418, v_prenex_408]} [2021-06-05 06:49:30,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:30,564 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:49:30,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 31 [2021-06-05 06:49:30,566 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:30,923 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 156 [2021-06-05 06:49:30,923 INFO L628 ElimStorePlain]: treesize reduction 226, result has 61.6 percent of original size [2021-06-05 06:49:30,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:30,946 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:49:30,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:49:30,948 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:31,087 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2021-06-05 06:49:31,088 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:31,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:31,110 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:49:31,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:49:31,113 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:31,246 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2021-06-05 06:49:31,247 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:31,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:31,265 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:31,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 35 [2021-06-05 06:49:31,268 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:31,532 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 142 [2021-06-05 06:49:31,533 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.3 percent of original size [2021-06-05 06:49:31,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:31,550 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:31,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2021-06-05 06:49:31,555 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:31,680 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-06-05 06:49:31,681 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:31,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:31,698 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:31,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 32 [2021-06-05 06:49:31,704 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:31,941 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 125 [2021-06-05 06:49:31,942 INFO L628 ElimStorePlain]: treesize reduction 12, result has 96.0 percent of original size [2021-06-05 06:49:31,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:31,961 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:49:31,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:49:31,963 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:32,085 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-06-05 06:49:32,086 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:32,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:32,104 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:49:32,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:49:32,106 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:32,215 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-05 06:49:32,215 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:32,232 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:49:32,232 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 24 variables, input treesize:599, output treesize:334 [2021-06-05 06:49:32,431 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 51 [2021-06-05 06:49:32,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:32,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649965639] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:32,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:32,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:49:32,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284067096] [2021-06-05 06:49:32,527 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:49:32,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:32,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:49:32,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:49:32,528 INFO L87 Difference]: Start difference. First operand 2150 states and 7369 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:33,173 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 32 [2021-06-05 06:49:33,634 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 53 [2021-06-05 06:49:33,854 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2021-06-05 06:49:34,187 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2021-06-05 06:49:34,394 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 06:49:34,760 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-06-05 06:49:34,997 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 06:49:35,421 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 103 [2021-06-05 06:49:35,788 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2021-06-05 06:49:35,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:49:35,850 INFO L93 Difference]: Finished difference Result 3064 states and 10226 transitions. [2021-06-05 06:49:35,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:49:35,850 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:49:35,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:49:35,855 INFO L225 Difference]: With dead ends: 3064 [2021-06-05 06:49:35,855 INFO L226 Difference]: Without dead ends: 3049 [2021-06-05 06:49:35,855 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 3696.5ms TimeCoverageRelationStatistics Valid=296, Invalid=1110, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 06:49:35,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2021-06-05 06:49:35,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 2147. [2021-06-05 06:49:35,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2146 states have (on average 3.428238583410997) internal successors, (7357), 2146 states have internal predecessors, (7357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:35,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 7357 transitions. [2021-06-05 06:49:35,886 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 7357 transitions. Word has length 26 [2021-06-05 06:49:35,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:49:35,886 INFO L482 AbstractCegarLoop]: Abstraction has 2147 states and 7357 transitions. [2021-06-05 06:49:35,886 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 7357 transitions. [2021-06-05 06:49:35,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:49:35,888 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:49:35,888 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:49:36,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3646,114 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:36,089 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:49:36,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:49:36,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1962058946, now seen corresponding path program 54 times [2021-06-05 06:49:36,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:49:36,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743438275] [2021-06-05 06:49:36,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:49:36,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:36,453 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:49:36,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743438275] [2021-06-05 06:49:36,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743438275] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:36,453 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100676106] [2021-06-05 06:49:36,454 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:36,477 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:49:36,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:49:36,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:49:36,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:49:36,826 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2021-06-05 06:49:36,877 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_426, v_prenex_425], 6=[A, v_prenex_427]} [2021-06-05 06:49:36,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:36,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:36,891 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:36,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30 [2021-06-05 06:49:36,892 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:36,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:36,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:36,904 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:49:36,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2021-06-05 06:49:36,905 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:37,043 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-06-05 06:49:37,044 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:37,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:37,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:37,057 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:37,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2021-06-05 06:49:37,061 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:37,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:37,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:37,072 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:49:37,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 23 [2021-06-05 06:49:37,074 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:37,200 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 06:49:37,200 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:37,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:37,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:37,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:37,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:37,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:37,216 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:37,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 06:49:37,220 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:37,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:37,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:37,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:37,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:37,232 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:49:37,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 24 [2021-06-05 06:49:37,233 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:37,342 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 06:49:37,342 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:37,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:37,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:37,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:37,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:37,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:37,357 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:37,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 31 [2021-06-05 06:49:37,360 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:37,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:37,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:37,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:37,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:37,370 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:37,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 31 [2021-06-05 06:49:37,371 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:37,470 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:37,477 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:49:37,477 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:409, output treesize:246 [2021-06-05 06:49:37,634 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2021-06-05 06:49:37,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:37,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100676106] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:37,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:37,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:49:37,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089923289] [2021-06-05 06:49:37,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:49:37,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:37,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:49:37,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:49:37,722 INFO L87 Difference]: Start difference. First operand 2147 states and 7357 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:38,138 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 33 [2021-06-05 06:49:38,518 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2021-06-05 06:49:39,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:49:39,306 INFO L93 Difference]: Finished difference Result 2844 states and 9528 transitions. [2021-06-05 06:49:39,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 06:49:39,306 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:49:39,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:49:39,310 INFO L225 Difference]: With dead ends: 2844 [2021-06-05 06:49:39,310 INFO L226 Difference]: Without dead ends: 2819 [2021-06-05 06:49:39,310 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1881.2ms TimeCoverageRelationStatistics Valid=215, Invalid=841, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:49:39,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2819 states. [2021-06-05 06:49:39,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2819 to 2143. [2021-06-05 06:49:39,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2143 states, 2142 states have (on average 3.429971988795518) internal successors, (7347), 2142 states have internal predecessors, (7347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:39,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2143 states to 2143 states and 7347 transitions. [2021-06-05 06:49:39,335 INFO L78 Accepts]: Start accepts. Automaton has 2143 states and 7347 transitions. Word has length 26 [2021-06-05 06:49:39,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:49:39,335 INFO L482 AbstractCegarLoop]: Abstraction has 2143 states and 7347 transitions. [2021-06-05 06:49:39,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:39,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2143 states and 7347 transitions. [2021-06-05 06:49:39,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:49:39,338 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:49:39,338 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:49:39,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3692,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:39,538 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:49:39,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:49:39,538 INFO L82 PathProgramCache]: Analyzing trace with hash 935709652, now seen corresponding path program 61 times [2021-06-05 06:49:39,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:49:39,538 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582712778] [2021-06-05 06:49:39,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:49:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:39,855 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:49:39,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582712778] [2021-06-05 06:49:39,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582712778] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:39,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819728678] [2021-06-05 06:49:39,855 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:39,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:49:39,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:49:40,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,333 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:49:40,335 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:49:40,342 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,346 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:49:40,349 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:49:40,356 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,360 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,360 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:49:40,363 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2021-06-05 06:49:40,370 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:49:40,377 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,381 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:49:40,384 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2021-06-05 06:49:40,391 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:49:40,398 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 16 [2021-06-05 06:49:40,405 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 16 [2021-06-05 06:49:40,411 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:49:40,418 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2021-06-05 06:49:40,424 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:40,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:40,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:49:40,428 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:40,451 INFO L628 ElimStorePlain]: treesize reduction 18, result has 60.0 percent of original size [2021-06-05 06:49:40,452 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:49:40,452 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:685, output treesize:21 [2021-06-05 06:49:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:40,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819728678] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:40,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:40,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-06-05 06:49:40,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399110296] [2021-06-05 06:49:40,466 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:49:40,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:40,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:49:40,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:49:40,467 INFO L87 Difference]: Start difference. First operand 2143 states and 7347 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:41,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:49:41,745 INFO L93 Difference]: Finished difference Result 2873 states and 9612 transitions. [2021-06-05 06:49:41,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:49:41,745 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:49:41,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:49:41,749 INFO L225 Difference]: With dead ends: 2873 [2021-06-05 06:49:41,749 INFO L226 Difference]: Without dead ends: 2851 [2021-06-05 06:49:41,749 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 1267.4ms TimeCoverageRelationStatistics Valid=334, Invalid=1148, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:49:41,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2021-06-05 06:49:41,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2169. [2021-06-05 06:49:41,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2169 states, 2168 states have (on average 3.4321955719557193) internal successors, (7441), 2168 states have internal predecessors, (7441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:41,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2169 states to 2169 states and 7441 transitions. [2021-06-05 06:49:41,775 INFO L78 Accepts]: Start accepts. Automaton has 2169 states and 7441 transitions. Word has length 26 [2021-06-05 06:49:41,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:49:41,775 INFO L482 AbstractCegarLoop]: Abstraction has 2169 states and 7441 transitions. [2021-06-05 06:49:41,776 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 16 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:41,776 INFO L276 IsEmpty]: Start isEmpty. Operand 2169 states and 7441 transitions. [2021-06-05 06:49:41,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:49:41,778 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:49:41,778 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:49:41,978 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3713 [2021-06-05 06:49:41,978 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:49:41,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:49:41,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1861203518, now seen corresponding path program 62 times [2021-06-05 06:49:41,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:49:41,979 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3668442] [2021-06-05 06:49:41,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:49:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:42,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:42,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:49:42,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3668442] [2021-06-05 06:49:42,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3668442] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:42,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998853381] [2021-06-05 06:49:42,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:42,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:49:42,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:49:42,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:49:42,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:49:42,541 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-06-05 06:49:42,591 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_428, v_prenex_432], 5=[A, v_prenex_430]} [2021-06-05 06:49:42,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:49:42,600 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:49:42,606 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,689 INFO L628 ElimStorePlain]: treesize reduction 147, result has 42.6 percent of original size [2021-06-05 06:49:42,689 INFO L518 ElimStorePlain]: Eliminatee v_prenex_432 vanished before elimination [2021-06-05 06:49:42,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-06-05 06:49:42,695 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,733 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:42,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-05 06:49:42,738 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,761 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:42,763 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 06:49:42,763 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:314, output treesize:33 [2021-06-05 06:49:42,807 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:42,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998853381] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:42,807 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:42,807 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 06:49:42,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885023810] [2021-06-05 06:49:42,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:49:42,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:42,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:49:42,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:49:42,807 INFO L87 Difference]: Start difference. First operand 2169 states and 7441 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:44,301 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-06-05 06:49:44,563 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2021-06-05 06:49:44,712 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 06:49:44,846 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2021-06-05 06:49:45,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:49:45,071 INFO L93 Difference]: Finished difference Result 3222 states and 10652 transitions. [2021-06-05 06:49:45,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:49:45,071 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:49:45,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:49:45,075 INFO L225 Difference]: With dead ends: 3222 [2021-06-05 06:49:45,075 INFO L226 Difference]: Without dead ends: 3182 [2021-06-05 06:49:45,075 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 2261.6ms TimeCoverageRelationStatistics Valid=527, Invalid=1825, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:49:45,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3182 states. [2021-06-05 06:49:45,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3182 to 2156. [2021-06-05 06:49:45,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2156 states, 2155 states have (on average 3.432018561484919) internal successors, (7396), 2155 states have internal predecessors, (7396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:45,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2156 states to 2156 states and 7396 transitions. [2021-06-05 06:49:45,102 INFO L78 Accepts]: Start accepts. Automaton has 2156 states and 7396 transitions. Word has length 26 [2021-06-05 06:49:45,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:49:45,102 INFO L482 AbstractCegarLoop]: Abstraction has 2156 states and 7396 transitions. [2021-06-05 06:49:45,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:45,102 INFO L276 IsEmpty]: Start isEmpty. Operand 2156 states and 7396 transitions. [2021-06-05 06:49:45,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:49:45,104 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:49:45,104 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:49:45,304 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3819 [2021-06-05 06:49:45,305 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:49:45,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:49:45,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1633671286, now seen corresponding path program 55 times [2021-06-05 06:49:45,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:49:45,305 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767263848] [2021-06-05 06:49:45,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:49:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:45,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:45,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:49:45,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767263848] [2021-06-05 06:49:45,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767263848] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:45,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164918255] [2021-06-05 06:49:45,693 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:45,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:49:45,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:49:46,137 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 06:49:46,373 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 49 [2021-06-05 06:49:46,432 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_443, v_prenex_444], 2=[A, v_prenex_445]} [2021-06-05 06:49:46,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:46,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2021-06-05 06:49:46,437 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:46,546 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-06-05 06:49:46,546 INFO L628 ElimStorePlain]: treesize reduction 54, result has 72.3 percent of original size [2021-06-05 06:49:46,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:46,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:49:46,551 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:46,597 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:46,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:46,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:46,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:49:46,602 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:46,643 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:46,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:46,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:46,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:46,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:49:46,649 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:46,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:46,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:46,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:49:46,656 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:46,693 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:46,695 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:49:46,695 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 7 variables, input treesize:207, output treesize:51 [2021-06-05 06:49:46,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:46,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164918255] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:46,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:46,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:49:46,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563517291] [2021-06-05 06:49:46,758 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:49:46,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:46,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:49:46,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:49:46,759 INFO L87 Difference]: Start difference. First operand 2156 states and 7396 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:47,590 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-05 06:49:47,978 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2021-06-05 06:49:48,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:49:48,100 INFO L93 Difference]: Finished difference Result 2279 states and 7717 transitions. [2021-06-05 06:49:48,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 06:49:48,100 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:49:48,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:49:48,104 INFO L225 Difference]: With dead ends: 2279 [2021-06-05 06:49:48,104 INFO L226 Difference]: Without dead ends: 2264 [2021-06-05 06:49:48,104 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1888.3ms TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:49:48,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2264 states. [2021-06-05 06:49:48,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2264 to 2159. [2021-06-05 06:49:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2159 states, 2158 states have (on average 3.4300278035217793) internal successors, (7402), 2158 states have internal predecessors, (7402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:48,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2159 states to 2159 states and 7402 transitions. [2021-06-05 06:49:48,128 INFO L78 Accepts]: Start accepts. Automaton has 2159 states and 7402 transitions. Word has length 26 [2021-06-05 06:49:48,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:49:48,128 INFO L482 AbstractCegarLoop]: Abstraction has 2159 states and 7402 transitions. [2021-06-05 06:49:48,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:48,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2159 states and 7402 transitions. [2021-06-05 06:49:48,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:49:48,130 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:49:48,130 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:49:48,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3833,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:48,331 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:49:48,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:49:48,331 INFO L82 PathProgramCache]: Analyzing trace with hash 16138506, now seen corresponding path program 56 times [2021-06-05 06:49:48,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:49:48,331 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560282885] [2021-06-05 06:49:48,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:49:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:48,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:48,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:49:48,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560282885] [2021-06-05 06:49:48,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560282885] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:48,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385718236] [2021-06-05 06:49:48,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:48,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:49:48,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:49:48,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:49:48,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:49:49,122 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 06:49:49,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:49,178 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:49:49,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:49:49,179 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:49,286 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 06:49:49,286 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:49,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:49,299 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:49:49,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:49:49,300 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:49,407 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-05 06:49:49,408 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:49,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:49,419 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:49,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:49:49,423 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:49,524 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 06:49:49,525 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:49,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:49,537 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:49:49,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:49:49,538 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:49,646 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 06:49:49,647 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:49,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:49,658 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:49,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:49:49,659 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:49,756 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:49,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:49,767 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:49,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:49:49,770 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:49,862 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:49,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:49,872 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:49,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:49:49,876 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:49,964 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:49,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:49,974 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:49,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:49:49,975 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:50,066 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:50,072 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:49:50,072 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 16 variables, input treesize:325, output treesize:174 [2021-06-05 06:49:50,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:50,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385718236] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:50,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:50,245 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:49:50,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375712234] [2021-06-05 06:49:50,245 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:49:50,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:50,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:49:50,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:49:50,246 INFO L87 Difference]: Start difference. First operand 2159 states and 7402 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:50,556 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-06-05 06:49:51,355 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-05 06:49:51,833 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-06-05 06:49:52,160 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2021-06-05 06:49:52,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:49:52,364 INFO L93 Difference]: Finished difference Result 3021 states and 10110 transitions. [2021-06-05 06:49:52,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:49:52,364 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:49:52,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:49:52,368 INFO L225 Difference]: With dead ends: 3021 [2021-06-05 06:49:52,368 INFO L226 Difference]: Without dead ends: 3006 [2021-06-05 06:49:52,368 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 2442.3ms TimeCoverageRelationStatistics Valid=217, Invalid=839, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:49:52,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2021-06-05 06:49:52,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 2153. [2021-06-05 06:49:52,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2153 states, 2152 states have (on average 3.427973977695167) internal successors, (7377), 2152 states have internal predecessors, (7377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:52,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2153 states to 2153 states and 7377 transitions. [2021-06-05 06:49:52,396 INFO L78 Accepts]: Start accepts. Automaton has 2153 states and 7377 transitions. Word has length 26 [2021-06-05 06:49:52,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:49:52,396 INFO L482 AbstractCegarLoop]: Abstraction has 2153 states and 7377 transitions. [2021-06-05 06:49:52,396 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:52,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2153 states and 7377 transitions. [2021-06-05 06:49:52,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:49:52,399 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:49:52,399 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:49:52,600 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3845 [2021-06-05 06:49:52,601 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:49:52,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:49:52,601 INFO L82 PathProgramCache]: Analyzing trace with hash 2054210818, now seen corresponding path program 57 times [2021-06-05 06:49:52,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:49:52,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639446764] [2021-06-05 06:49:52,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:49:52,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:52,944 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:52,944 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:49:52,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639446764] [2021-06-05 06:49:52,944 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639446764] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:52,944 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408701446] [2021-06-05 06:49:52,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:52,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:49:52,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:49:52,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:49:52,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:49:53,364 INFO L446 ElimStorePlain]: Different costs {2=[A, v_prenex_469], 3=[v_prenex_467, v_prenex_468]} [2021-06-05 06:49:53,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:53,377 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:53,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:49:53,378 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:53,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:53,389 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:53,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:49:53,391 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:53,528 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 06:49:53,528 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:53,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:53,542 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:49:53,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:49:53,543 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:53,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:53,553 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:53,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:49:53,555 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:53,690 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 06:49:53,690 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:53,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:53,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:53,703 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:53,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2021-06-05 06:49:53,707 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:53,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:53,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:53,718 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:49:53,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 22 [2021-06-05 06:49:53,719 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:53,832 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 06:49:53,833 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:53,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:53,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:53,845 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:49:53,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 19 [2021-06-05 06:49:53,846 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:53,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:53,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:53,855 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:53,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2021-06-05 06:49:53,859 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:53,956 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:53,962 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:49:53,962 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:365, output treesize:194 [2021-06-05 06:49:54,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:54,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408701446] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:54,141 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:54,141 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:49:54,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261642264] [2021-06-05 06:49:54,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:49:54,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:54,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:49:54,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:49:54,142 INFO L87 Difference]: Start difference. First operand 2153 states and 7377 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:55,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:49:55,290 INFO L93 Difference]: Finished difference Result 2848 states and 9544 transitions. [2021-06-05 06:49:55,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 06:49:55,290 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:49:55,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:49:55,294 INFO L225 Difference]: With dead ends: 2848 [2021-06-05 06:49:55,294 INFO L226 Difference]: Without dead ends: 2823 [2021-06-05 06:49:55,294 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1453.1ms TimeCoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:49:55,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2823 states. [2021-06-05 06:49:55,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2823 to 2129. [2021-06-05 06:49:55,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2128 states have (on average 3.425751879699248) internal successors, (7290), 2128 states have internal predecessors, (7290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:55,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 7290 transitions. [2021-06-05 06:49:55,322 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 7290 transitions. Word has length 26 [2021-06-05 06:49:55,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:49:55,322 INFO L482 AbstractCegarLoop]: Abstraction has 2129 states and 7290 transitions. [2021-06-05 06:49:55,322 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:55,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 7290 transitions. [2021-06-05 06:49:55,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:49:55,324 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:49:55,324 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:49:55,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3862,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:55,526 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:49:55,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:49:55,526 INFO L82 PathProgramCache]: Analyzing trace with hash 243784254, now seen corresponding path program 58 times [2021-06-05 06:49:55,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:49:55,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616217847] [2021-06-05 06:49:55,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:49:55,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:55,806 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2021-06-05 06:49:55,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:55,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:49:55,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616217847] [2021-06-05 06:49:55,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616217847] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:55,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20446832] [2021-06-05 06:49:55,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:55,917 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:49:55,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:49:55,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:49:55,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:49:56,257 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2021-06-05 06:49:56,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,372 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:56,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 24 [2021-06-05 06:49:56,373 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,383 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:49:56,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:49:56,386 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,510 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 06:49:56,510 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:56,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,522 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:56,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:49:56,524 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,534 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:56,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-06-05 06:49:56,535 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,650 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 06:49:56,650 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:56,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,662 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:49:56,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 20 [2021-06-05 06:49:56,663 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,672 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:56,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:49:56,676 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,778 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-06-05 06:49:56,779 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:56,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,790 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:56,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-06-05 06:49:56,793 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,803 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:49:56,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 17 [2021-06-05 06:49:56,804 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,900 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:56,906 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 06:49:56,906 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:341, output treesize:174 [2021-06-05 06:49:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:57,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20446832] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:57,088 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:57,088 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:49:57,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167714234] [2021-06-05 06:49:57,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:49:57,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:57,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:49:57,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:49:57,088 INFO L87 Difference]: Start difference. First operand 2129 states and 7290 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:58,178 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2021-06-05 06:49:58,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:49:58,254 INFO L93 Difference]: Finished difference Result 2750 states and 9269 transitions. [2021-06-05 06:49:58,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:49:58,255 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:49:58,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:49:58,259 INFO L225 Difference]: With dead ends: 2750 [2021-06-05 06:49:58,259 INFO L226 Difference]: Without dead ends: 2735 [2021-06-05 06:49:58,259 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 1438.1ms TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:49:58,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2735 states. [2021-06-05 06:49:58,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2735 to 2129. [2021-06-05 06:49:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2129 states, 2128 states have (on average 3.425751879699248) internal successors, (7290), 2128 states have internal predecessors, (7290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2129 states to 2129 states and 7290 transitions. [2021-06-05 06:49:58,286 INFO L78 Accepts]: Start accepts. Automaton has 2129 states and 7290 transitions. Word has length 26 [2021-06-05 06:49:58,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:49:58,286 INFO L482 AbstractCegarLoop]: Abstraction has 2129 states and 7290 transitions. [2021-06-05 06:49:58,286 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:58,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2129 states and 7290 transitions. [2021-06-05 06:49:58,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:49:58,288 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:49:58,288 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:49:58,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3895,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:58,489 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:49:58,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:49:58,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1496131378, now seen corresponding path program 63 times [2021-06-05 06:49:58,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:49:58,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070946725] [2021-06-05 06:49:58,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:49:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:58,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:58,823 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:49:58,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070946725] [2021-06-05 06:49:58,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070946725] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:58,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840865916] [2021-06-05 06:49:58,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:58,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:49:58,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:49:58,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:49:58,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:49:59,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,331 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:49:59,331 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:49:59,335 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:59,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,360 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 06:49:59,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 33 [2021-06-05 06:49:59,363 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:59,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,387 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:49:59,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31 [2021-06-05 06:49:59,389 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:59,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,411 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-05 06:49:59,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 25 [2021-06-05 06:49:59,413 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:59,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,446 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-05 06:49:59,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 28 [2021-06-05 06:49:59,447 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:59,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,469 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:49:59,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 28 [2021-06-05 06:49:59,471 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:59,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,497 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:59,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 47 [2021-06-05 06:49:59,503 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:59,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,526 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:59,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 41 [2021-06-05 06:49:59,532 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:59,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,548 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:49:59,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:49:59,548 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:59,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,565 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:49:59,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 06:49:59,565 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:59,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,581 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:49:59,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 1 [2021-06-05 06:49:59,582 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:59,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,598 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:49:59,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:49:59,598 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:59,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,613 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:49:59,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 1 [2021-06-05 06:49:59,614 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:59,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,637 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 06:49:59,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2021-06-05 06:49:59,640 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:59,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,653 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:49:59,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 1 [2021-06-05 06:49:59,654 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:59,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:59,662 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:49:59,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 1 [2021-06-05 06:49:59,663 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:59,801 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 26 [2021-06-05 06:49:59,802 INFO L628 ElimStorePlain]: treesize reduction 140, result has 39.9 percent of original size [2021-06-05 06:49:59,804 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:49:59,804 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:761, output treesize:83 [2021-06-05 06:49:59,897 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:49:59,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840865916] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:59,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:59,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:49:59,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286977507] [2021-06-05 06:49:59,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:49:59,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:59,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:49:59,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:49:59,898 INFO L87 Difference]: Start difference. First operand 2129 states and 7290 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:01,493 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2021-06-05 06:50:02,257 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2021-06-05 06:50:02,397 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2021-06-05 06:50:02,565 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 39 [2021-06-05 06:50:02,768 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 42 [2021-06-05 06:50:02,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:02,868 INFO L93 Difference]: Finished difference Result 3313 states and 10903 transitions. [2021-06-05 06:50:02,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:50:02,868 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-06-05 06:50:02,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:02,873 INFO L225 Difference]: With dead ends: 3313 [2021-06-05 06:50:02,873 INFO L226 Difference]: Without dead ends: 3269 [2021-06-05 06:50:02,873 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 2875.4ms TimeCoverageRelationStatistics Valid=585, Invalid=2495, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 06:50:02,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2021-06-05 06:50:02,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 2147. [2021-06-05 06:50:02,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2147 states, 2146 states have (on average 3.4221808014911463) internal successors, (7344), 2146 states have internal predecessors, (7344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:02,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 7344 transitions. [2021-06-05 06:50:02,904 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 7344 transitions. Word has length 26 [2021-06-05 06:50:02,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:02,904 INFO L482 AbstractCegarLoop]: Abstraction has 2147 states and 7344 transitions. [2021-06-05 06:50:02,905 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 19 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:02,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 7344 transitions. [2021-06-05 06:50:02,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:02,907 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:02,907 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:03,107 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3928 [2021-06-05 06:50:03,107 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:03,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:03,108 INFO L82 PathProgramCache]: Analyzing trace with hash -1868598568, now seen corresponding path program 59 times [2021-06-05 06:50:03,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:03,108 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96368428] [2021-06-05 06:50:03,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:03,148 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:03,148 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:03,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96368428] [2021-06-05 06:50:03,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96368428] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:03,148 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909300339] [2021-06-05 06:50:03,148 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:03,176 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:50:03,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:03,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:03,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:03,271 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:03,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909300339] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:03,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:03,271 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:50:03,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323909786] [2021-06-05 06:50:03,271 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:50:03,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:03,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:50:03,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:50:03,272 INFO L87 Difference]: Start difference. First operand 2147 states and 7344 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:04,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:04,308 INFO L93 Difference]: Finished difference Result 5131 states and 15966 transitions. [2021-06-05 06:50:04,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:50:04,308 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:04,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:04,315 INFO L225 Difference]: With dead ends: 5131 [2021-06-05 06:50:04,315 INFO L226 Difference]: Without dead ends: 5131 [2021-06-05 06:50:04,316 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 567.0ms TimeCoverageRelationStatistics Valid=802, Invalid=2858, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 06:50:04,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5131 states. [2021-06-05 06:50:04,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5131 to 2340. [2021-06-05 06:50:04,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2340 states, 2339 states have (on average 3.469431380932022) internal successors, (8115), 2339 states have internal predecessors, (8115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:04,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2340 states to 2340 states and 8115 transitions. [2021-06-05 06:50:04,363 INFO L78 Accepts]: Start accepts. Automaton has 2340 states and 8115 transitions. Word has length 28 [2021-06-05 06:50:04,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:04,363 INFO L482 AbstractCegarLoop]: Abstraction has 2340 states and 8115 transitions. [2021-06-05 06:50:04,363 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 16 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:04,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2340 states and 8115 transitions. [2021-06-05 06:50:04,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:04,366 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:04,366 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:04,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4059,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:04,566 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:04,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:04,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1450049884, now seen corresponding path program 60 times [2021-06-05 06:50:04,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:04,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148375230] [2021-06-05 06:50:04,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:04,607 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:04,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148375230] [2021-06-05 06:50:04,607 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148375230] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:04,607 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212096885] [2021-06-05 06:50:04,607 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:04,631 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:50:04,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:04,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:04,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:04,742 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:04,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212096885] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:04,742 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:04,742 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:50:04,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428484842] [2021-06-05 06:50:04,742 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:50:04,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:04,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:50:04,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:50:04,743 INFO L87 Difference]: Start difference. First operand 2340 states and 8115 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:06,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:06,034 INFO L93 Difference]: Finished difference Result 6763 states and 20717 transitions. [2021-06-05 06:50:06,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 06:50:06,034 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:06,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:06,044 INFO L225 Difference]: With dead ends: 6763 [2021-06-05 06:50:06,044 INFO L226 Difference]: Without dead ends: 6763 [2021-06-05 06:50:06,044 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2023 ImplicationChecksByTransitivity, 751.2ms TimeCoverageRelationStatistics Valid=1110, Invalid=4590, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 06:50:06,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6763 states. [2021-06-05 06:50:06,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6763 to 2351. [2021-06-05 06:50:06,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2351 states, 2350 states have (on average 3.4761702127659575) internal successors, (8169), 2350 states have internal predecessors, (8169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 8169 transitions. [2021-06-05 06:50:06,104 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 8169 transitions. Word has length 28 [2021-06-05 06:50:06,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:06,104 INFO L482 AbstractCegarLoop]: Abstraction has 2351 states and 8169 transitions. [2021-06-05 06:50:06,104 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:06,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 8169 transitions. [2021-06-05 06:50:06,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:06,107 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:06,107 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:06,321 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4060 [2021-06-05 06:50:06,321 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:06,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:06,321 INFO L82 PathProgramCache]: Analyzing trace with hash 2017001964, now seen corresponding path program 61 times [2021-06-05 06:50:06,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:06,321 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039660383] [2021-06-05 06:50:06,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:06,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:06,372 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:06,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039660383] [2021-06-05 06:50:06,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039660383] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:06,372 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490148001] [2021-06-05 06:50:06,372 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:06,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:06,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:06,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490148001] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:06,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:06,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:50:06,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815769700] [2021-06-05 06:50:06,500 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:50:06,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:06,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:50:06,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:50:06,500 INFO L87 Difference]: Start difference. First operand 2351 states and 8169 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:07,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:07,822 INFO L93 Difference]: Finished difference Result 6150 states and 19231 transitions. [2021-06-05 06:50:07,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 06:50:07,823 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:07,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:07,832 INFO L225 Difference]: With dead ends: 6150 [2021-06-05 06:50:07,833 INFO L226 Difference]: Without dead ends: 6150 [2021-06-05 06:50:07,833 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2006 ImplicationChecksByTransitivity, 805.5ms TimeCoverageRelationStatistics Valid=1099, Invalid=4451, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 06:50:07,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6150 states. [2021-06-05 06:50:07,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6150 to 2299. [2021-06-05 06:50:07,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 2298 states have (on average 3.4538729329852047) internal successors, (7937), 2298 states have internal predecessors, (7937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:07,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 7937 transitions. [2021-06-05 06:50:07,886 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 7937 transitions. Word has length 28 [2021-06-05 06:50:07,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:07,886 INFO L482 AbstractCegarLoop]: Abstraction has 2299 states and 7937 transitions. [2021-06-05 06:50:07,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:07,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 7937 transitions. [2021-06-05 06:50:07,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:07,889 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:07,889 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:08,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4061,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:08,093 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:08,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:08,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1095937010, now seen corresponding path program 62 times [2021-06-05 06:50:08,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:08,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785816547] [2021-06-05 06:50:08,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:08,144 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:08,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:08,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785816547] [2021-06-05 06:50:08,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785816547] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:08,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598269054] [2021-06-05 06:50:08,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:08,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:50:08,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:08,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:08,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:08,262 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:08,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598269054] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:08,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:08,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:50:08,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841209008] [2021-06-05 06:50:08,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:50:08,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:08,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:50:08,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:50:08,263 INFO L87 Difference]: Start difference. First operand 2299 states and 7937 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:09,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:09,299 INFO L93 Difference]: Finished difference Result 5206 states and 16106 transitions. [2021-06-05 06:50:09,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 06:50:09,300 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:09,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:09,306 INFO L225 Difference]: With dead ends: 5206 [2021-06-05 06:50:09,307 INFO L226 Difference]: Without dead ends: 5206 [2021-06-05 06:50:09,307 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 626.4ms TimeCoverageRelationStatistics Valid=904, Invalid=3652, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 06:50:09,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5206 states. [2021-06-05 06:50:09,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5206 to 2309. [2021-06-05 06:50:09,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2309 states, 2308 states have (on average 3.450173310225303) internal successors, (7963), 2308 states have internal predecessors, (7963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:09,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 7963 transitions. [2021-06-05 06:50:09,349 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 7963 transitions. Word has length 28 [2021-06-05 06:50:09,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:09,349 INFO L482 AbstractCegarLoop]: Abstraction has 2309 states and 7963 transitions. [2021-06-05 06:50:09,349 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:09,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 7963 transitions. [2021-06-05 06:50:09,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:09,351 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:09,352 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:09,553 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4062 [2021-06-05 06:50:09,553 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:09,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:09,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1989400020, now seen corresponding path program 64 times [2021-06-05 06:50:09,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:09,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165506015] [2021-06-05 06:50:09,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:09,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:09,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165506015] [2021-06-05 06:50:09,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165506015] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:09,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507657180] [2021-06-05 06:50:09,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:09,616 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:50:09,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:09,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:09,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:09,702 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:09,703 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507657180] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:09,703 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:09,703 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 06:50:09,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511467974] [2021-06-05 06:50:09,703 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:50:09,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:09,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:50:09,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:50:09,703 INFO L87 Difference]: Start difference. First operand 2309 states and 7963 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:10,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:10,299 INFO L93 Difference]: Finished difference Result 4633 states and 14522 transitions. [2021-06-05 06:50:10,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 06:50:10,300 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:10,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:10,306 INFO L225 Difference]: With dead ends: 4633 [2021-06-05 06:50:10,306 INFO L226 Difference]: Without dead ends: 4633 [2021-06-05 06:50:10,307 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 316.8ms TimeCoverageRelationStatistics Valid=383, Invalid=1339, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 06:50:10,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4633 states. [2021-06-05 06:50:10,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4633 to 2379. [2021-06-05 06:50:10,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2379 states, 2378 states have (on average 3.433978132884777) internal successors, (8166), 2378 states have internal predecessors, (8166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:10,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2379 states to 2379 states and 8166 transitions. [2021-06-05 06:50:10,351 INFO L78 Accepts]: Start accepts. Automaton has 2379 states and 8166 transitions. Word has length 28 [2021-06-05 06:50:10,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:10,351 INFO L482 AbstractCegarLoop]: Abstraction has 2379 states and 8166 transitions. [2021-06-05 06:50:10,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:10,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2379 states and 8166 transitions. [2021-06-05 06:50:10,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:10,354 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:10,354 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:10,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4063,127 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:10,557 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:10,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:10,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1848031388, now seen corresponding path program 63 times [2021-06-05 06:50:10,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:10,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211553003] [2021-06-05 06:50:10,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:10,592 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:50:10,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:10,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211553003] [2021-06-05 06:50:10,592 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211553003] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:10,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631335242] [2021-06-05 06:50:10,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:10,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:50:10,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:10,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:50:10,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:10,675 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:50:10,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631335242] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:10,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:10,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:50:10,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106841887] [2021-06-05 06:50:10,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:50:10,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:10,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:50:10,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:50:10,676 INFO L87 Difference]: Start difference. First operand 2379 states and 8166 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:10,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:10,837 INFO L93 Difference]: Finished difference Result 3856 states and 12614 transitions. [2021-06-05 06:50:10,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:50:10,838 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:10,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:10,842 INFO L225 Difference]: With dead ends: 3856 [2021-06-05 06:50:10,842 INFO L226 Difference]: Without dead ends: 3832 [2021-06-05 06:50:10,843 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 102.8ms TimeCoverageRelationStatistics Valid=139, Invalid=241, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:50:10,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3832 states. [2021-06-05 06:50:10,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3832 to 2739. [2021-06-05 06:50:10,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2739 states, 2738 states have (on average 3.50036523009496) internal successors, (9584), 2738 states have internal predecessors, (9584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:10,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 9584 transitions. [2021-06-05 06:50:10,878 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 9584 transitions. Word has length 28 [2021-06-05 06:50:10,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:10,878 INFO L482 AbstractCegarLoop]: Abstraction has 2739 states and 9584 transitions. [2021-06-05 06:50:10,878 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:10,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 9584 transitions. [2021-06-05 06:50:10,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:10,881 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:10,881 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:11,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4064 [2021-06-05 06:50:11,082 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:11,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:11,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1411062680, now seen corresponding path program 64 times [2021-06-05 06:50:11,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:11,082 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285316721] [2021-06-05 06:50:11,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:11,116 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:11,116 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:11,116 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285316721] [2021-06-05 06:50:11,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285316721] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:11,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182125799] [2021-06-05 06:50:11,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:11,143 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:50:11,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:11,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:50:11,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:11,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182125799] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:11,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:11,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:50:11,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087297344] [2021-06-05 06:50:11,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:50:11,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:11,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:50:11,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:50:11,236 INFO L87 Difference]: Start difference. First operand 2739 states and 9584 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:11,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:11,798 INFO L93 Difference]: Finished difference Result 4478 states and 14368 transitions. [2021-06-05 06:50:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 06:50:11,799 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:11,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:11,804 INFO L225 Difference]: With dead ends: 4478 [2021-06-05 06:50:11,804 INFO L226 Difference]: Without dead ends: 4431 [2021-06-05 06:50:11,805 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 364.9ms TimeCoverageRelationStatistics Valid=515, Invalid=1465, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 06:50:11,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4431 states. [2021-06-05 06:50:11,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4431 to 2904. [2021-06-05 06:50:11,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2904 states, 2903 states have (on average 3.5177402686875645) internal successors, (10212), 2903 states have internal predecessors, (10212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:11,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2904 states to 2904 states and 10212 transitions. [2021-06-05 06:50:11,850 INFO L78 Accepts]: Start accepts. Automaton has 2904 states and 10212 transitions. Word has length 28 [2021-06-05 06:50:11,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:11,850 INFO L482 AbstractCegarLoop]: Abstraction has 2904 states and 10212 transitions. [2021-06-05 06:50:11,850 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:11,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2904 states and 10212 transitions. [2021-06-05 06:50:11,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:11,854 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:11,854 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:12,055 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4065 [2021-06-05 06:50:12,055 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:12,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:12,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1347815140, now seen corresponding path program 65 times [2021-06-05 06:50:12,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:12,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662440601] [2021-06-05 06:50:12,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:12,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:12,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:12,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662440601] [2021-06-05 06:50:12,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662440601] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:12,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087621006] [2021-06-05 06:50:12,086 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:12,109 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:50:12,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:12,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:50:12,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:12,199 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:12,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087621006] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:12,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:12,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:50:12,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899634398] [2021-06-05 06:50:12,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:50:12,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:12,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:50:12,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:50:12,200 INFO L87 Difference]: Start difference. First operand 2904 states and 10212 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:12,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:12,921 INFO L93 Difference]: Finished difference Result 4785 states and 15055 transitions. [2021-06-05 06:50:12,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 06:50:12,922 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:12,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:12,929 INFO L225 Difference]: With dead ends: 4785 [2021-06-05 06:50:12,929 INFO L226 Difference]: Without dead ends: 4759 [2021-06-05 06:50:12,929 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 445.0ms TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:50:12,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4759 states. [2021-06-05 06:50:12,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4759 to 2922. [2021-06-05 06:50:12,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2922 states, 2921 states have (on average 3.5217391304347827) internal successors, (10287), 2921 states have internal predecessors, (10287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:12,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 10287 transitions. [2021-06-05 06:50:12,987 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 10287 transitions. Word has length 28 [2021-06-05 06:50:12,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:12,987 INFO L482 AbstractCegarLoop]: Abstraction has 2922 states and 10287 transitions. [2021-06-05 06:50:12,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:12,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 10287 transitions. [2021-06-05 06:50:12,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:12,991 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:12,991 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:13,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4066 [2021-06-05 06:50:13,192 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:13,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:13,192 INFO L82 PathProgramCache]: Analyzing trace with hash -675402358, now seen corresponding path program 66 times [2021-06-05 06:50:13,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:13,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027678017] [2021-06-05 06:50:13,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:13,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:13,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027678017] [2021-06-05 06:50:13,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027678017] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:13,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557594486] [2021-06-05 06:50:13,223 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:13,247 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:50:13,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:13,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:50:13,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:13,330 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:13,330 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557594486] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:13,330 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:13,330 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:50:13,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514497184] [2021-06-05 06:50:13,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:50:13,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:13,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:50:13,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:50:13,331 INFO L87 Difference]: Start difference. First operand 2922 states and 10287 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:13,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:14,000 INFO L93 Difference]: Finished difference Result 4783 states and 15074 transitions. [2021-06-05 06:50:14,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 06:50:14,000 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:14,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:14,006 INFO L225 Difference]: With dead ends: 4783 [2021-06-05 06:50:14,006 INFO L226 Difference]: Without dead ends: 4771 [2021-06-05 06:50:14,007 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 424.8ms TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:50:14,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4771 states. [2021-06-05 06:50:14,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4771 to 2922. [2021-06-05 06:50:14,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2922 states, 2921 states have (on average 3.515576857240671) internal successors, (10269), 2921 states have internal predecessors, (10269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:14,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 10269 transitions. [2021-06-05 06:50:14,056 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 10269 transitions. Word has length 28 [2021-06-05 06:50:14,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:14,056 INFO L482 AbstractCegarLoop]: Abstraction has 2922 states and 10269 transitions. [2021-06-05 06:50:14,056 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:14,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 10269 transitions. [2021-06-05 06:50:14,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:14,059 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:14,059 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:14,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4067,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:14,260 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:14,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:14,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1724201280, now seen corresponding path program 67 times [2021-06-05 06:50:14,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:14,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528549079] [2021-06-05 06:50:14,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:14,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:14,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528549079] [2021-06-05 06:50:14,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528549079] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:14,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445065894] [2021-06-05 06:50:14,292 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:14,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:50:14,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:14,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445065894] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:14,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:14,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:50:14,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957583419] [2021-06-05 06:50:14,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:50:14,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:14,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:50:14,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:50:14,380 INFO L87 Difference]: Start difference. First operand 2922 states and 10269 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:14,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:14,927 INFO L93 Difference]: Finished difference Result 5554 states and 17878 transitions. [2021-06-05 06:50:14,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:50:14,927 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:14,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:14,935 INFO L225 Difference]: With dead ends: 5554 [2021-06-05 06:50:14,935 INFO L226 Difference]: Without dead ends: 5507 [2021-06-05 06:50:14,935 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 313.8ms TimeCoverageRelationStatistics Valid=455, Invalid=1267, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 06:50:14,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5507 states. [2021-06-05 06:50:14,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5507 to 3068. [2021-06-05 06:50:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3067 states have (on average 3.5598304532116076) internal successors, (10918), 3067 states have internal predecessors, (10918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:14,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 10918 transitions. [2021-06-05 06:50:14,992 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 10918 transitions. Word has length 28 [2021-06-05 06:50:14,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:14,993 INFO L482 AbstractCegarLoop]: Abstraction has 3068 states and 10918 transitions. [2021-06-05 06:50:14,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:14,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 10918 transitions. [2021-06-05 06:50:14,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:14,996 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:14,997 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:15,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4068 [2021-06-05 06:50:15,197 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:15,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:15,197 INFO L82 PathProgramCache]: Analyzing trace with hash 359577472, now seen corresponding path program 68 times [2021-06-05 06:50:15,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:15,197 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712824640] [2021-06-05 06:50:15,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:15,218 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:50:15,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:15,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712824640] [2021-06-05 06:50:15,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712824640] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:15,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554578045] [2021-06-05 06:50:15,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:15,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:50:15,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:15,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:50:15,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:50:15,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554578045] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:15,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:15,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-06-05 06:50:15,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130772318] [2021-06-05 06:50:15,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:50:15,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:15,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:50:15,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:50:15,298 INFO L87 Difference]: Start difference. First operand 3068 states and 10918 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:15,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:15,458 INFO L93 Difference]: Finished difference Result 4356 states and 14401 transitions. [2021-06-05 06:50:15,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:50:15,458 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:15,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:15,463 INFO L225 Difference]: With dead ends: 4356 [2021-06-05 06:50:15,463 INFO L226 Difference]: Without dead ends: 4356 [2021-06-05 06:50:15,464 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 111.7ms TimeCoverageRelationStatistics Valid=132, Invalid=210, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:50:15,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4356 states. [2021-06-05 06:50:15,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4356 to 2879. [2021-06-05 06:50:15,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2879 states, 2878 states have (on average 3.5295343988881167) internal successors, (10158), 2878 states have internal predecessors, (10158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:15,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 10158 transitions. [2021-06-05 06:50:15,504 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 10158 transitions. Word has length 28 [2021-06-05 06:50:15,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:15,504 INFO L482 AbstractCegarLoop]: Abstraction has 2879 states and 10158 transitions. [2021-06-05 06:50:15,505 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:15,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 10158 transitions. [2021-06-05 06:50:15,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:15,508 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:15,508 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:15,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4069,133 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:15,708 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:15,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:15,708 INFO L82 PathProgramCache]: Analyzing trace with hash -987104094, now seen corresponding path program 69 times [2021-06-05 06:50:15,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:15,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701270402] [2021-06-05 06:50:15,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:15,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:15,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701270402] [2021-06-05 06:50:15,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701270402] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:15,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608860431] [2021-06-05 06:50:15,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:15,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 06:50:15,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:15,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:15,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:15,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608860431] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:15,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:15,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:50:15,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714878632] [2021-06-05 06:50:15,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:50:15,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:15,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:50:15,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:50:15,839 INFO L87 Difference]: Start difference. First operand 2879 states and 10158 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:16,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:16,526 INFO L93 Difference]: Finished difference Result 6267 states and 19847 transitions. [2021-06-05 06:50:16,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 06:50:16,527 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:16,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:16,535 INFO L225 Difference]: With dead ends: 6267 [2021-06-05 06:50:16,535 INFO L226 Difference]: Without dead ends: 6267 [2021-06-05 06:50:16,536 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 369.5ms TimeCoverageRelationStatistics Valid=552, Invalid=1800, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:50:16,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6267 states. [2021-06-05 06:50:16,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6267 to 2897. [2021-06-05 06:50:16,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2897 states, 2896 states have (on average 3.5293508287292816) internal successors, (10221), 2896 states have internal predecessors, (10221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:16,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 10221 transitions. [2021-06-05 06:50:16,609 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 10221 transitions. Word has length 28 [2021-06-05 06:50:16,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:16,609 INFO L482 AbstractCegarLoop]: Abstraction has 2897 states and 10221 transitions. [2021-06-05 06:50:16,609 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:16,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 10221 transitions. [2021-06-05 06:50:16,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:16,612 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:16,613 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:16,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4070 [2021-06-05 06:50:16,813 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:16,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:16,813 INFO L82 PathProgramCache]: Analyzing trace with hash -202190000, now seen corresponding path program 70 times [2021-06-05 06:50:16,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:16,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640283891] [2021-06-05 06:50:16,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:16,845 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:16,845 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:16,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640283891] [2021-06-05 06:50:16,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640283891] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:16,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446690333] [2021-06-05 06:50:16,845 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:16,868 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:50:16,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:16,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:16,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:16,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446690333] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:16,937 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:16,937 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:50:16,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036766276] [2021-06-05 06:50:16,938 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:50:16,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:16,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:50:16,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:50:16,938 INFO L87 Difference]: Start difference. First operand 2897 states and 10221 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:17,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:17,710 INFO L93 Difference]: Finished difference Result 6510 states and 20600 transitions. [2021-06-05 06:50:17,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 06:50:17,711 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:17,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:17,721 INFO L225 Difference]: With dead ends: 6510 [2021-06-05 06:50:17,721 INFO L226 Difference]: Without dead ends: 6510 [2021-06-05 06:50:17,722 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 404.6ms TimeCoverageRelationStatistics Valid=634, Invalid=2336, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 06:50:17,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6510 states. [2021-06-05 06:50:17,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6510 to 2991. [2021-06-05 06:50:17,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 2990 states have (on average 3.5210702341137123) internal successors, (10528), 2990 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:17,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 10528 transitions. [2021-06-05 06:50:17,789 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 10528 transitions. Word has length 28 [2021-06-05 06:50:17,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:17,789 INFO L482 AbstractCegarLoop]: Abstraction has 2991 states and 10528 transitions. [2021-06-05 06:50:17,789 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:17,789 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 10528 transitions. [2021-06-05 06:50:17,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:17,793 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:17,793 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:17,993 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4071,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:17,993 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:17,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:17,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1285212656, now seen corresponding path program 71 times [2021-06-05 06:50:17,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:17,994 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146678728] [2021-06-05 06:50:17,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:18,039 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:18,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:18,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146678728] [2021-06-05 06:50:18,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146678728] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:18,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987830239] [2021-06-05 06:50:18,039 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:18,062 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:50:18,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:18,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:50:18,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:18,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:18,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987830239] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:18,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:18,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:50:18,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832392397] [2021-06-05 06:50:18,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:50:18,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:18,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:50:18,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:50:18,128 INFO L87 Difference]: Start difference. First operand 2991 states and 10528 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:18,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:18,698 INFO L93 Difference]: Finished difference Result 6652 states and 21097 transitions. [2021-06-05 06:50:18,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:50:18,698 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:18,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:18,707 INFO L225 Difference]: With dead ends: 6652 [2021-06-05 06:50:18,707 INFO L226 Difference]: Without dead ends: 6616 [2021-06-05 06:50:18,707 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 331.0ms TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:50:18,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6616 states. [2021-06-05 06:50:18,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6616 to 3393. [2021-06-05 06:50:18,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3393 states, 3392 states have (on average 3.5474646226415096) internal successors, (12033), 3392 states have internal predecessors, (12033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:18,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3393 states to 3393 states and 12033 transitions. [2021-06-05 06:50:18,776 INFO L78 Accepts]: Start accepts. Automaton has 3393 states and 12033 transitions. Word has length 28 [2021-06-05 06:50:18,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:18,776 INFO L482 AbstractCegarLoop]: Abstraction has 3393 states and 12033 transitions. [2021-06-05 06:50:18,776 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:18,776 INFO L276 IsEmpty]: Start isEmpty. Operand 3393 states and 12033 transitions. [2021-06-05 06:50:18,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:18,780 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:18,780 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:18,980 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4072 [2021-06-05 06:50:18,980 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:18,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:18,981 INFO L82 PathProgramCache]: Analyzing trace with hash 185865462, now seen corresponding path program 72 times [2021-06-05 06:50:18,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:18,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281032164] [2021-06-05 06:50:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:19,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:19,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281032164] [2021-06-05 06:50:19,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281032164] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:19,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809991590] [2021-06-05 06:50:19,013 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:19,036 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:50:19,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:19,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:50:19,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:19,111 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:19,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809991590] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:19,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:19,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:50:19,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953071216] [2021-06-05 06:50:19,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:50:19,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:19,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:50:19,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:50:19,112 INFO L87 Difference]: Start difference. First operand 3393 states and 12033 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:19,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:19,720 INFO L93 Difference]: Finished difference Result 6827 states and 21583 transitions. [2021-06-05 06:50:19,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:50:19,721 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:19,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:19,729 INFO L225 Difference]: With dead ends: 6827 [2021-06-05 06:50:19,729 INFO L226 Difference]: Without dead ends: 6827 [2021-06-05 06:50:19,730 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 388.8ms TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:50:19,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6827 states. [2021-06-05 06:50:19,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6827 to 3104. [2021-06-05 06:50:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3104 states, 3103 states have (on average 3.5078955849178213) internal successors, (10885), 3103 states have internal predecessors, (10885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:19,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3104 states to 3104 states and 10885 transitions. [2021-06-05 06:50:19,798 INFO L78 Accepts]: Start accepts. Automaton has 3104 states and 10885 transitions. Word has length 28 [2021-06-05 06:50:19,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:19,798 INFO L482 AbstractCegarLoop]: Abstraction has 3104 states and 10885 transitions. [2021-06-05 06:50:19,798 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:19,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3104 states and 10885 transitions. [2021-06-05 06:50:19,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:19,801 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:19,801 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:20,002 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4073,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:20,002 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:20,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:20,002 INFO L82 PathProgramCache]: Analyzing trace with hash -247011142, now seen corresponding path program 73 times [2021-06-05 06:50:20,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:20,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852120331] [2021-06-05 06:50:20,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:20,034 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:20,034 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:20,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852120331] [2021-06-05 06:50:20,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852120331] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:20,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777756775] [2021-06-05 06:50:20,034 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:20,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:20,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:20,119 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:20,119 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777756775] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:20,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:20,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:50:20,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482553760] [2021-06-05 06:50:20,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:50:20,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:20,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:50:20,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:50:20,120 INFO L87 Difference]: Start difference. First operand 3104 states and 10885 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:20,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:20,808 INFO L93 Difference]: Finished difference Result 5999 states and 19332 transitions. [2021-06-05 06:50:20,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 06:50:20,809 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:20,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:20,817 INFO L225 Difference]: With dead ends: 5999 [2021-06-05 06:50:20,817 INFO L226 Difference]: Without dead ends: 5995 [2021-06-05 06:50:20,817 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 394.5ms TimeCoverageRelationStatistics Valid=600, Invalid=2052, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 06:50:20,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5995 states. [2021-06-05 06:50:20,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5995 to 2864. [2021-06-05 06:50:20,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2863 states have (on average 3.5337059028990567) internal successors, (10117), 2863 states have internal predecessors, (10117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:20,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 10117 transitions. [2021-06-05 06:50:20,871 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 10117 transitions. Word has length 28 [2021-06-05 06:50:20,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:20,871 INFO L482 AbstractCegarLoop]: Abstraction has 2864 states and 10117 transitions. [2021-06-05 06:50:20,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:20,871 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 10117 transitions. [2021-06-05 06:50:20,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:20,874 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:20,874 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:21,075 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4074 [2021-06-05 06:50:21,075 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:21,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:21,075 INFO L82 PathProgramCache]: Analyzing trace with hash -519020332, now seen corresponding path program 74 times [2021-06-05 06:50:21,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:21,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582120617] [2021-06-05 06:50:21,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:21,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:21,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582120617] [2021-06-05 06:50:21,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582120617] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:21,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993983515] [2021-06-05 06:50:21,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:21,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:50:21,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:21,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:21,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:21,220 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:21,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993983515] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:21,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:21,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:50:21,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069705799] [2021-06-05 06:50:21,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:50:21,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:21,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:50:21,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:50:21,221 INFO L87 Difference]: Start difference. First operand 2864 states and 10117 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:22,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:22,210 INFO L93 Difference]: Finished difference Result 9242 states and 30126 transitions. [2021-06-05 06:50:22,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 06:50:22,210 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:22,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:22,223 INFO L225 Difference]: With dead ends: 9242 [2021-06-05 06:50:22,224 INFO L226 Difference]: Without dead ends: 9242 [2021-06-05 06:50:22,224 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1727 ImplicationChecksByTransitivity, 573.1ms TimeCoverageRelationStatistics Valid=968, Invalid=3588, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 06:50:22,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9242 states. [2021-06-05 06:50:22,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9242 to 3043. [2021-06-05 06:50:22,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3043 states, 3042 states have (on average 3.6058514135437214) internal successors, (10969), 3042 states have internal predecessors, (10969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:22,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3043 states to 3043 states and 10969 transitions. [2021-06-05 06:50:22,312 INFO L78 Accepts]: Start accepts. Automaton has 3043 states and 10969 transitions. Word has length 28 [2021-06-05 06:50:22,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:22,312 INFO L482 AbstractCegarLoop]: Abstraction has 3043 states and 10969 transitions. [2021-06-05 06:50:22,312 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:22,312 INFO L276 IsEmpty]: Start isEmpty. Operand 3043 states and 10969 transitions. [2021-06-05 06:50:22,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:22,316 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:22,316 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:22,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4075 [2021-06-05 06:50:22,516 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:22,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:22,516 INFO L82 PathProgramCache]: Analyzing trace with hash 47931748, now seen corresponding path program 75 times [2021-06-05 06:50:22,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:22,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183912837] [2021-06-05 06:50:22,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:22,549 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:22,549 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:22,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183912837] [2021-06-05 06:50:22,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183912837] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:22,549 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2109402965] [2021-06-05 06:50:22,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:22,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:50:22,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:22,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:22,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:22,666 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:22,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2109402965] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:22,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:22,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:50:22,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78036783] [2021-06-05 06:50:22,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:50:22,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:22,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:50:22,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:50:22,667 INFO L87 Difference]: Start difference. First operand 3043 states and 10969 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:23,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:23,646 INFO L93 Difference]: Finished difference Result 9069 states and 29656 transitions. [2021-06-05 06:50:23,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 06:50:23,646 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:23,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:23,661 INFO L225 Difference]: With dead ends: 9069 [2021-06-05 06:50:23,661 INFO L226 Difference]: Without dead ends: 9069 [2021-06-05 06:50:23,661 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 575.0ms TimeCoverageRelationStatistics Valid=968, Invalid=3588, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 06:50:23,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9069 states. [2021-06-05 06:50:23,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9069 to 3012. [2021-06-05 06:50:23,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 3011 states have (on average 3.5888409166389903) internal successors, (10806), 3011 states have internal predecessors, (10806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:23,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 10806 transitions. [2021-06-05 06:50:23,752 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 10806 transitions. Word has length 28 [2021-06-05 06:50:23,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:23,752 INFO L482 AbstractCegarLoop]: Abstraction has 3012 states and 10806 transitions. [2021-06-05 06:50:23,752 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:23,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 10806 transitions. [2021-06-05 06:50:23,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:23,756 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:23,756 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:23,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4076 [2021-06-05 06:50:23,956 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:23,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:23,957 INFO L82 PathProgramCache]: Analyzing trace with hash -1124414110, now seen corresponding path program 76 times [2021-06-05 06:50:23,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:23,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951491738] [2021-06-05 06:50:23,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:23,990 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:23,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:23,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951491738] [2021-06-05 06:50:23,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951491738] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:23,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223786240] [2021-06-05 06:50:23,991 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:24,013 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:50:24,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:24,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:24,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:24,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223786240] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:24,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:24,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:50:24,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866273573] [2021-06-05 06:50:24,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:50:24,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:24,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:50:24,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:50:24,090 INFO L87 Difference]: Start difference. First operand 3012 states and 10806 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:25,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:25,648 INFO L93 Difference]: Finished difference Result 8513 states and 26929 transitions. [2021-06-05 06:50:25,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 06:50:25,649 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:25,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:25,662 INFO L225 Difference]: With dead ends: 8513 [2021-06-05 06:50:25,662 INFO L226 Difference]: Without dead ends: 8513 [2021-06-05 06:50:25,663 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 955.0ms TimeCoverageRelationStatistics Valid=821, Invalid=3085, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 06:50:25,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8513 states. [2021-06-05 06:50:25,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8513 to 3032. [2021-06-05 06:50:25,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3032 states, 3031 states have (on average 3.5922137908281093) internal successors, (10888), 3031 states have internal predecessors, (10888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3032 states to 3032 states and 10888 transitions. [2021-06-05 06:50:25,748 INFO L78 Accepts]: Start accepts. Automaton has 3032 states and 10888 transitions. Word has length 28 [2021-06-05 06:50:25,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:25,748 INFO L482 AbstractCegarLoop]: Abstraction has 3032 states and 10888 transitions. [2021-06-05 06:50:25,748 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:25,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3032 states and 10888 transitions. [2021-06-05 06:50:25,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:25,752 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:25,752 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:25,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4077,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:25,966 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:25,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:25,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1043038022, now seen corresponding path program 77 times [2021-06-05 06:50:25,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:25,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398812481] [2021-06-05 06:50:25,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:25,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:25,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398812481] [2021-06-05 06:50:25,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398812481] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:25,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264849973] [2021-06-05 06:50:25,997 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:26,021 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:50:26,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:26,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:26,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:26,094 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:26,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264849973] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:26,094 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:26,094 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:50:26,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907353800] [2021-06-05 06:50:26,094 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:50:26,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:26,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:50:26,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:50:26,094 INFO L87 Difference]: Start difference. First operand 3032 states and 10888 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:27,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:27,030 INFO L93 Difference]: Finished difference Result 8020 states and 25736 transitions. [2021-06-05 06:50:27,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 06:50:27,031 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:27,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:27,043 INFO L225 Difference]: With dead ends: 8020 [2021-06-05 06:50:27,043 INFO L226 Difference]: Without dead ends: 8012 [2021-06-05 06:50:27,043 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 469.5ms TimeCoverageRelationStatistics Valid=776, Invalid=2764, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:50:27,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8012 states. [2021-06-05 06:50:27,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8012 to 3014. [2021-06-05 06:50:27,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3014 states, 3013 states have (on average 3.5881181546631264) internal successors, (10811), 3013 states have internal predecessors, (10811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:27,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3014 states to 3014 states and 10811 transitions. [2021-06-05 06:50:27,122 INFO L78 Accepts]: Start accepts. Automaton has 3014 states and 10811 transitions. Word has length 28 [2021-06-05 06:50:27,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:27,122 INFO L482 AbstractCegarLoop]: Abstraction has 3014 states and 10811 transitions. [2021-06-05 06:50:27,122 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:27,122 INFO L276 IsEmpty]: Start isEmpty. Operand 3014 states and 10811 transitions. [2021-06-05 06:50:27,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:27,125 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:27,125 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:27,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4078 [2021-06-05 06:50:27,326 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:27,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:27,326 INFO L82 PathProgramCache]: Analyzing trace with hash -112380806, now seen corresponding path program 78 times [2021-06-05 06:50:27,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:27,326 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118963114] [2021-06-05 06:50:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:27,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:27,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118963114] [2021-06-05 06:50:27,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118963114] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:27,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548181238] [2021-06-05 06:50:27,358 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:27,380 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 06:50:27,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:27,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:27,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:27,474 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:27,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548181238] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:27,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:27,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:50:27,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294395442] [2021-06-05 06:50:27,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:50:27,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:27,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:50:27,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:50:27,475 INFO L87 Difference]: Start difference. First operand 3014 states and 10811 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:28,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:28,352 INFO L93 Difference]: Finished difference Result 7945 states and 25505 transitions. [2021-06-05 06:50:28,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 06:50:28,353 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:28,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:28,365 INFO L225 Difference]: With dead ends: 7945 [2021-06-05 06:50:28,365 INFO L226 Difference]: Without dead ends: 7945 [2021-06-05 06:50:28,366 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 503.3ms TimeCoverageRelationStatistics Valid=820, Invalid=2962, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:50:28,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7945 states. [2021-06-05 06:50:28,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7945 to 3030. [2021-06-05 06:50:28,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3030 states, 3029 states have (on average 3.5902938263453286) internal successors, (10875), 3029 states have internal predecessors, (10875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:28,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3030 states to 3030 states and 10875 transitions. [2021-06-05 06:50:28,449 INFO L78 Accepts]: Start accepts. Automaton has 3030 states and 10875 transitions. Word has length 28 [2021-06-05 06:50:28,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:28,449 INFO L482 AbstractCegarLoop]: Abstraction has 3030 states and 10875 transitions. [2021-06-05 06:50:28,449 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:28,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3030 states and 10875 transitions. [2021-06-05 06:50:28,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:28,453 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:28,453 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:28,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4079 [2021-06-05 06:50:28,654 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:28,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:28,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1530658348, now seen corresponding path program 79 times [2021-06-05 06:50:28,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:28,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076305948] [2021-06-05 06:50:28,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:28,685 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:28,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:28,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076305948] [2021-06-05 06:50:28,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076305948] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:28,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204034162] [2021-06-05 06:50:28,686 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:28,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:28,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:28,789 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:28,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204034162] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:28,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:28,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:50:28,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105453164] [2021-06-05 06:50:28,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:50:28,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:28,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:50:28,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:50:28,789 INFO L87 Difference]: Start difference. First operand 3030 states and 10875 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:29,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:29,676 INFO L93 Difference]: Finished difference Result 7613 states and 24721 transitions. [2021-06-05 06:50:29,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 06:50:29,676 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:29,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:29,687 INFO L225 Difference]: With dead ends: 7613 [2021-06-05 06:50:29,688 INFO L226 Difference]: Without dead ends: 7605 [2021-06-05 06:50:29,688 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 493.8ms TimeCoverageRelationStatistics Valid=800, Invalid=2740, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:50:29,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7605 states. [2021-06-05 06:50:29,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7605 to 2787. [2021-06-05 06:50:29,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2786 states have (on average 3.5078966259870783) internal successors, (9773), 2786 states have internal predecessors, (9773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:29,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 9773 transitions. [2021-06-05 06:50:29,752 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 9773 transitions. Word has length 28 [2021-06-05 06:50:29,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:29,752 INFO L482 AbstractCegarLoop]: Abstraction has 2787 states and 9773 transitions. [2021-06-05 06:50:29,752 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:29,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 9773 transitions. [2021-06-05 06:50:29,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:29,755 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:29,756 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:29,956 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4080,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:29,957 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:29,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:29,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1614061928, now seen corresponding path program 80 times [2021-06-05 06:50:29,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:29,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211982016] [2021-06-05 06:50:29,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:29,991 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:29,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:29,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211982016] [2021-06-05 06:50:29,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211982016] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:29,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518169368] [2021-06-05 06:50:29,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:30,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:50:30,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:30,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:30,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:30,104 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:30,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518169368] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:30,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:30,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:50:30,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253633493] [2021-06-05 06:50:30,105 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:50:30,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:30,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:50:30,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:50:30,105 INFO L87 Difference]: Start difference. First operand 2787 states and 9773 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:30,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:30,879 INFO L93 Difference]: Finished difference Result 5810 states and 18592 transitions. [2021-06-05 06:50:30,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 06:50:30,879 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:30,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:30,887 INFO L225 Difference]: With dead ends: 5810 [2021-06-05 06:50:30,887 INFO L226 Difference]: Without dead ends: 5810 [2021-06-05 06:50:30,887 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 481.8ms TimeCoverageRelationStatistics Valid=709, Invalid=2713, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 06:50:30,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5810 states. [2021-06-05 06:50:30,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5810 to 2799. [2021-06-05 06:50:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 2798 states have (on average 3.506433166547534) internal successors, (9811), 2798 states have internal predecessors, (9811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:30,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 9811 transitions. [2021-06-05 06:50:30,937 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 9811 transitions. Word has length 28 [2021-06-05 06:50:30,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:30,937 INFO L482 AbstractCegarLoop]: Abstraction has 2799 states and 9811 transitions. [2021-06-05 06:50:30,937 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:30,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 9811 transitions. [2021-06-05 06:50:30,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:30,940 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:30,940 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:31,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4081 [2021-06-05 06:50:31,140 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:31,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:31,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1027545192, now seen corresponding path program 81 times [2021-06-05 06:50:31,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:31,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598977629] [2021-06-05 06:50:31,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:31,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:31,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598977629] [2021-06-05 06:50:31,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598977629] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:31,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679336001] [2021-06-05 06:50:31,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:31,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 06:50:31,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:31,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:31,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:31,307 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:31,307 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679336001] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:31,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:31,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:50:31,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773350737] [2021-06-05 06:50:31,307 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:50:31,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:31,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:50:31,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:50:31,308 INFO L87 Difference]: Start difference. First operand 2799 states and 9811 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:32,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:32,291 INFO L93 Difference]: Finished difference Result 6586 states and 20579 transitions. [2021-06-05 06:50:32,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 06:50:32,291 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:32,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:32,301 INFO L225 Difference]: With dead ends: 6586 [2021-06-05 06:50:32,301 INFO L226 Difference]: Without dead ends: 6586 [2021-06-05 06:50:32,302 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 626.9ms TimeCoverageRelationStatistics Valid=1012, Invalid=4244, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 06:50:32,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6586 states. [2021-06-05 06:50:32,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6586 to 2865. [2021-06-05 06:50:32,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2864 states have (on average 3.5013966480446927) internal successors, (10028), 2864 states have internal predecessors, (10028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 10028 transitions. [2021-06-05 06:50:32,361 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 10028 transitions. Word has length 28 [2021-06-05 06:50:32,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:32,361 INFO L482 AbstractCegarLoop]: Abstraction has 2865 states and 10028 transitions. [2021-06-05 06:50:32,361 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:32,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 10028 transitions. [2021-06-05 06:50:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:32,364 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:32,364 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:32,565 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4082,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:32,565 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:32,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:32,565 INFO L82 PathProgramCache]: Analyzing trace with hash 615493962, now seen corresponding path program 82 times [2021-06-05 06:50:32,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:32,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063352015] [2021-06-05 06:50:32,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:32,597 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:32,597 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:32,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063352015] [2021-06-05 06:50:32,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063352015] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:32,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656607435] [2021-06-05 06:50:32,597 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:32,622 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:50:32,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:32,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:32,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:32,713 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:32,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656607435] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:32,713 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:32,713 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:50:32,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251656972] [2021-06-05 06:50:32,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:50:32,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:32,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:50:32,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:50:32,714 INFO L87 Difference]: Start difference. First operand 2865 states and 10028 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:33,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:33,688 INFO L93 Difference]: Finished difference Result 6152 states and 19441 transitions. [2021-06-05 06:50:33,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 06:50:33,689 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:33,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:33,697 INFO L225 Difference]: With dead ends: 6152 [2021-06-05 06:50:33,697 INFO L226 Difference]: Without dead ends: 6148 [2021-06-05 06:50:33,698 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 588.1ms TimeCoverageRelationStatistics Valid=914, Invalid=3508, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:50:33,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6148 states. [2021-06-05 06:50:33,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6148 to 2791. [2021-06-05 06:50:33,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2790 states have (on average 3.4974910394265235) internal successors, (9758), 2790 states have internal predecessors, (9758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:33,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 9758 transitions. [2021-06-05 06:50:33,757 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 9758 transitions. Word has length 28 [2021-06-05 06:50:33,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:33,757 INFO L482 AbstractCegarLoop]: Abstraction has 2791 states and 9758 transitions. [2021-06-05 06:50:33,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:33,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 9758 transitions. [2021-06-05 06:50:33,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:33,760 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:33,760 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:33,960 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4083 [2021-06-05 06:50:33,960 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:33,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:33,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1194937186, now seen corresponding path program 65 times [2021-06-05 06:50:33,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:33,961 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528687624] [2021-06-05 06:50:33,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:34,003 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:34,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:34,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528687624] [2021-06-05 06:50:34,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528687624] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:34,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330218464] [2021-06-05 06:50:34,003 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:34,026 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:50:34,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:34,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:34,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:34,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330218464] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:34,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:34,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:50:34,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857876464] [2021-06-05 06:50:34,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:50:34,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:34,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:50:34,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:50:34,096 INFO L87 Difference]: Start difference. First operand 2791 states and 9758 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:34,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:34,751 INFO L93 Difference]: Finished difference Result 5291 states and 17008 transitions. [2021-06-05 06:50:34,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:50:34,751 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:34,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:34,759 INFO L225 Difference]: With dead ends: 5291 [2021-06-05 06:50:34,759 INFO L226 Difference]: Without dead ends: 5291 [2021-06-05 06:50:34,759 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 307.8ms TimeCoverageRelationStatistics Valid=407, Invalid=1399, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:50:34,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5291 states. [2021-06-05 06:50:34,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5291 to 2791. [2021-06-05 06:50:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2790 states have (on average 3.499641577060932) internal successors, (9764), 2790 states have internal predecessors, (9764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:34,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 9764 transitions. [2021-06-05 06:50:34,805 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 9764 transitions. Word has length 28 [2021-06-05 06:50:34,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:34,805 INFO L482 AbstractCegarLoop]: Abstraction has 2791 states and 9764 transitions. [2021-06-05 06:50:34,805 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:34,806 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 9764 transitions. [2021-06-05 06:50:34,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:34,809 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:34,809 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:35,009 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4084,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:35,009 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:35,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:35,010 INFO L82 PathProgramCache]: Analyzing trace with hash -416862576, now seen corresponding path program 66 times [2021-06-05 06:50:35,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:35,010 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132317702] [2021-06-05 06:50:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:35,048 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:35,048 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:35,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132317702] [2021-06-05 06:50:35,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132317702] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:35,048 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840923890] [2021-06-05 06:50:35,048 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:35,071 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:50:35,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:35,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:35,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:35,141 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:35,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840923890] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:35,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:35,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:50:35,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233510243] [2021-06-05 06:50:35,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:50:35,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:35,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:50:35,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:50:35,142 INFO L87 Difference]: Start difference. First operand 2791 states and 9764 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:35,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:35,870 INFO L93 Difference]: Finished difference Result 5642 states and 18000 transitions. [2021-06-05 06:50:35,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 06:50:35,870 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:35,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:35,878 INFO L225 Difference]: With dead ends: 5642 [2021-06-05 06:50:35,878 INFO L226 Difference]: Without dead ends: 5642 [2021-06-05 06:50:35,878 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 434.8ms TimeCoverageRelationStatistics Valid=638, Invalid=2118, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 06:50:35,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2021-06-05 06:50:35,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 2782. [2021-06-05 06:50:35,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2782 states, 2781 states have (on average 3.4998202085580727) internal successors, (9733), 2781 states have internal predecessors, (9733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:35,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2782 states to 2782 states and 9733 transitions. [2021-06-05 06:50:35,932 INFO L78 Accepts]: Start accepts. Automaton has 2782 states and 9733 transitions. Word has length 28 [2021-06-05 06:50:35,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:35,932 INFO L482 AbstractCegarLoop]: Abstraction has 2782 states and 9733 transitions. [2021-06-05 06:50:35,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:35,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2782 states and 9733 transitions. [2021-06-05 06:50:35,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:35,935 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:35,935 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:36,136 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4085 [2021-06-05 06:50:36,136 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:36,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:36,136 INFO L82 PathProgramCache]: Analyzing trace with hash -648402224, now seen corresponding path program 67 times [2021-06-05 06:50:36,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:36,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502101154] [2021-06-05 06:50:36,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:36,173 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:36,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:36,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502101154] [2021-06-05 06:50:36,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502101154] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:36,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274880219] [2021-06-05 06:50:36,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:36,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:36,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:36,278 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:36,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274880219] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:36,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:36,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:50:36,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005671057] [2021-06-05 06:50:36,278 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:50:36,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:36,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:50:36,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:50:36,279 INFO L87 Difference]: Start difference. First operand 2782 states and 9733 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:37,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:37,127 INFO L93 Difference]: Finished difference Result 6106 states and 19261 transitions. [2021-06-05 06:50:37,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 06:50:37,127 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:37,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:37,135 INFO L225 Difference]: With dead ends: 6106 [2021-06-05 06:50:37,135 INFO L226 Difference]: Without dead ends: 6106 [2021-06-05 06:50:37,136 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 490.8ms TimeCoverageRelationStatistics Valid=777, Invalid=3005, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:50:37,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6106 states. [2021-06-05 06:50:37,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6106 to 2844. [2021-06-05 06:50:37,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2843 states have (on average 3.4956032360182907) internal successors, (9938), 2843 states have internal predecessors, (9938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:37,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 9938 transitions. [2021-06-05 06:50:37,192 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 9938 transitions. Word has length 28 [2021-06-05 06:50:37,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:37,192 INFO L482 AbstractCegarLoop]: Abstraction has 2844 states and 9938 transitions. [2021-06-05 06:50:37,192 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:37,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 9938 transitions. [2021-06-05 06:50:37,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:37,196 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:37,196 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:37,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4086 [2021-06-05 06:50:37,411 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:37,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:37,411 INFO L82 PathProgramCache]: Analyzing trace with hash -628686410, now seen corresponding path program 68 times [2021-06-05 06:50:37,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:37,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102988067] [2021-06-05 06:50:37,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:37,443 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:37,444 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:37,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102988067] [2021-06-05 06:50:37,444 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102988067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:37,444 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363570030] [2021-06-05 06:50:37,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:37,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:50:37,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:37,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:37,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:37,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363570030] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:37,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:37,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-06-05 06:50:37,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012691414] [2021-06-05 06:50:37,552 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:50:37,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:37,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:50:37,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:50:37,552 INFO L87 Difference]: Start difference. First operand 2844 states and 9938 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:38,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:38,095 INFO L93 Difference]: Finished difference Result 6899 states and 23235 transitions. [2021-06-05 06:50:38,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:50:38,096 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:38,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:38,106 INFO L225 Difference]: With dead ends: 6899 [2021-06-05 06:50:38,106 INFO L226 Difference]: Without dead ends: 6899 [2021-06-05 06:50:38,106 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 377.5ms TimeCoverageRelationStatistics Valid=536, Invalid=1270, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:50:38,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6899 states. [2021-06-05 06:50:38,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6899 to 4080. [2021-06-05 06:50:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4080 states, 4079 states have (on average 3.613875949987742) internal successors, (14741), 4079 states have internal predecessors, (14741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:38,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4080 states to 4080 states and 14741 transitions. [2021-06-05 06:50:38,182 INFO L78 Accepts]: Start accepts. Automaton has 4080 states and 14741 transitions. Word has length 28 [2021-06-05 06:50:38,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:38,182 INFO L482 AbstractCegarLoop]: Abstraction has 4080 states and 14741 transitions. [2021-06-05 06:50:38,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:38,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4080 states and 14741 transitions. [2021-06-05 06:50:38,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:38,188 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:38,188 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:38,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4087 [2021-06-05 06:50:38,388 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:38,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:38,388 INFO L82 PathProgramCache]: Analyzing trace with hash -693223366, now seen corresponding path program 69 times [2021-06-05 06:50:38,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:38,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895757068] [2021-06-05 06:50:38,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:38,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:38,443 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:38,443 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:38,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895757068] [2021-06-05 06:50:38,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895757068] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:38,443 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386247216] [2021-06-05 06:50:38,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:38,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 06:50:38,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:38,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:38,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:38,530 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:38,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386247216] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:38,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:38,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:50:38,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990458110] [2021-06-05 06:50:38,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:50:38,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:38,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:50:38,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:50:38,530 INFO L87 Difference]: Start difference. First operand 4080 states and 14741 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:39,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:39,294 INFO L93 Difference]: Finished difference Result 7418 states and 25100 transitions. [2021-06-05 06:50:39,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 06:50:39,294 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:39,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:39,306 INFO L225 Difference]: With dead ends: 7418 [2021-06-05 06:50:39,307 INFO L226 Difference]: Without dead ends: 7414 [2021-06-05 06:50:39,307 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 424.6ms TimeCoverageRelationStatistics Valid=697, Invalid=2495, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 06:50:39,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7414 states. [2021-06-05 06:50:39,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7414 to 3968. [2021-06-05 06:50:39,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3968 states, 3967 states have (on average 3.623140912528359) internal successors, (14373), 3967 states have internal predecessors, (14373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:39,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3968 states to 3968 states and 14373 transitions. [2021-06-05 06:50:39,388 INFO L78 Accepts]: Start accepts. Automaton has 3968 states and 14373 transitions. Word has length 28 [2021-06-05 06:50:39,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:39,389 INFO L482 AbstractCegarLoop]: Abstraction has 3968 states and 14373 transitions. [2021-06-05 06:50:39,389 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:39,389 INFO L276 IsEmpty]: Start isEmpty. Operand 3968 states and 14373 transitions. [2021-06-05 06:50:39,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:39,394 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:39,394 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:39,594 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4088 [2021-06-05 06:50:39,594 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:39,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:39,595 INFO L82 PathProgramCache]: Analyzing trace with hash 1327034102, now seen corresponding path program 83 times [2021-06-05 06:50:39,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:39,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39835717] [2021-06-05 06:50:39,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:39,620 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:39,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:39,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39835717] [2021-06-05 06:50:39,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39835717] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:39,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677327857] [2021-06-05 06:50:39,620 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:39,662 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:50:39,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:39,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:50:39,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:39,758 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:39,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677327857] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:39,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:39,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 06:50:39,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274523307] [2021-06-05 06:50:39,758 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:50:39,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:39,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:50:39,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:50:39,759 INFO L87 Difference]: Start difference. First operand 3968 states and 14373 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:40,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:40,532 INFO L93 Difference]: Finished difference Result 8219 states and 27545 transitions. [2021-06-05 06:50:40,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:50:40,532 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:40,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:40,545 INFO L225 Difference]: With dead ends: 8219 [2021-06-05 06:50:40,545 INFO L226 Difference]: Without dead ends: 8207 [2021-06-05 06:50:40,546 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 436.7ms TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:50:40,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8207 states. [2021-06-05 06:50:40,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8207 to 4409. [2021-06-05 06:50:40,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 3.713475499092559) internal successors, (16369), 4408 states have internal predecessors, (16369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 16369 transitions. [2021-06-05 06:50:40,665 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 16369 transitions. Word has length 28 [2021-06-05 06:50:40,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:40,665 INFO L482 AbstractCegarLoop]: Abstraction has 4409 states and 16369 transitions. [2021-06-05 06:50:40,665 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 16369 transitions. [2021-06-05 06:50:40,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:40,671 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:40,671 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:40,871 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 153 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4089 [2021-06-05 06:50:40,871 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:40,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:40,872 INFO L82 PathProgramCache]: Analyzing trace with hash -926591794, now seen corresponding path program 84 times [2021-06-05 06:50:40,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:40,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877965331] [2021-06-05 06:50:40,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:40,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:40,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877965331] [2021-06-05 06:50:40,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877965331] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:40,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919358835] [2021-06-05 06:50:40,900 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:40,924 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:50:40,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:40,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:50:40,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:41,006 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:41,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919358835] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:41,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:41,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 06:50:41,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62657533] [2021-06-05 06:50:41,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:50:41,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:41,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:50:41,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:50:41,007 INFO L87 Difference]: Start difference. First operand 4409 states and 16369 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:41,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:41,814 INFO L93 Difference]: Finished difference Result 8511 states and 28462 transitions. [2021-06-05 06:50:41,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:50:41,815 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:41,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:41,828 INFO L225 Difference]: With dead ends: 8511 [2021-06-05 06:50:41,828 INFO L226 Difference]: Without dead ends: 8511 [2021-06-05 06:50:41,829 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 464.9ms TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:50:41,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8511 states. [2021-06-05 06:50:41,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8511 to 4429. [2021-06-05 06:50:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4429 states, 4428 states have (on average 3.7007678410117433) internal successors, (16387), 4428 states have internal predecessors, (16387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:41,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4429 states to 4429 states and 16387 transitions. [2021-06-05 06:50:41,916 INFO L78 Accepts]: Start accepts. Automaton has 4429 states and 16387 transitions. Word has length 28 [2021-06-05 06:50:41,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:41,916 INFO L482 AbstractCegarLoop]: Abstraction has 4429 states and 16387 transitions. [2021-06-05 06:50:41,916 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:41,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4429 states and 16387 transitions. [2021-06-05 06:50:41,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:41,922 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:41,922 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:42,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4090,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:42,122 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:42,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:42,122 INFO L82 PathProgramCache]: Analyzing trace with hash -2129998084, now seen corresponding path program 85 times [2021-06-05 06:50:42,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:42,122 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558811836] [2021-06-05 06:50:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:42,154 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:42,154 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558811836] [2021-06-05 06:50:42,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558811836] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:42,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040522006] [2021-06-05 06:50:42,155 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:42,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:50:42,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:42,256 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:42,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040522006] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:42,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:42,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:50:42,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834591728] [2021-06-05 06:50:42,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:50:42,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:42,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:50:42,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:50:42,257 INFO L87 Difference]: Start difference. First operand 4429 states and 16387 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:42,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:42,676 INFO L93 Difference]: Finished difference Result 7882 states and 27809 transitions. [2021-06-05 06:50:42,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:50:42,676 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:42,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:42,688 INFO L225 Difference]: With dead ends: 7882 [2021-06-05 06:50:42,688 INFO L226 Difference]: Without dead ends: 7799 [2021-06-05 06:50:42,688 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 243.6ms TimeCoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:50:42,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7799 states. [2021-06-05 06:50:42,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7799 to 5872. [2021-06-05 06:50:42,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5872 states, 5871 states have (on average 3.7629024016351558) internal successors, (22092), 5871 states have internal predecessors, (22092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:42,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5872 states to 5872 states and 22092 transitions. [2021-06-05 06:50:42,787 INFO L78 Accepts]: Start accepts. Automaton has 5872 states and 22092 transitions. Word has length 28 [2021-06-05 06:50:42,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:42,787 INFO L482 AbstractCegarLoop]: Abstraction has 5872 states and 22092 transitions. [2021-06-05 06:50:42,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:42,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5872 states and 22092 transitions. [2021-06-05 06:50:42,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:42,795 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:42,795 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:42,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4091 [2021-06-05 06:50:42,995 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:42,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:42,996 INFO L82 PathProgramCache]: Analyzing trace with hash -921983104, now seen corresponding path program 86 times [2021-06-05 06:50:42,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:42,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228127290] [2021-06-05 06:50:42,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:50:43,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:43,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228127290] [2021-06-05 06:50:43,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228127290] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:43,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751071010] [2021-06-05 06:50:43,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:43,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:50:43,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:43,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:50:43,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:43,113 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:50:43,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751071010] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:43,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:43,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-06-05 06:50:43,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931314217] [2021-06-05 06:50:43,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:50:43,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:43,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:50:43,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:50:43,114 INFO L87 Difference]: Start difference. First operand 5872 states and 22092 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:43,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:43,276 INFO L93 Difference]: Finished difference Result 8160 states and 28714 transitions. [2021-06-05 06:50:43,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:50:43,276 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:43,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:43,289 INFO L225 Difference]: With dead ends: 8160 [2021-06-05 06:50:43,290 INFO L226 Difference]: Without dead ends: 8160 [2021-06-05 06:50:43,290 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 103.3ms TimeCoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:50:43,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8160 states. [2021-06-05 06:50:43,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8160 to 6012. [2021-06-05 06:50:43,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 6011 states have (on average 3.7394776243553487) internal successors, (22478), 6011 states have internal predecessors, (22478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:43,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 22478 transitions. [2021-06-05 06:50:43,416 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 22478 transitions. Word has length 28 [2021-06-05 06:50:43,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:43,416 INFO L482 AbstractCegarLoop]: Abstraction has 6012 states and 22478 transitions. [2021-06-05 06:50:43,416 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:43,416 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 22478 transitions. [2021-06-05 06:50:43,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:43,425 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:43,425 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:43,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4092,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:43,625 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:43,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:43,625 INFO L82 PathProgramCache]: Analyzing trace with hash 8216640, now seen corresponding path program 87 times [2021-06-05 06:50:43,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:43,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645063132] [2021-06-05 06:50:43,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:43,662 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:43,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645063132] [2021-06-05 06:50:43,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645063132] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:43,662 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783510767] [2021-06-05 06:50:43,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:43,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 06:50:43,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:43,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:43,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:43,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783510767] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:43,747 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:43,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 06:50:43,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834482837] [2021-06-05 06:50:43,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:50:43,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:43,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:50:43,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:50:43,748 INFO L87 Difference]: Start difference. First operand 6012 states and 22478 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:44,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:44,414 INFO L93 Difference]: Finished difference Result 12545 states and 43647 transitions. [2021-06-05 06:50:44,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 06:50:44,414 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:44,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:44,437 INFO L225 Difference]: With dead ends: 12545 [2021-06-05 06:50:44,437 INFO L226 Difference]: Without dead ends: 12545 [2021-06-05 06:50:44,438 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 390.6ms TimeCoverageRelationStatistics Valid=657, Invalid=2205, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 06:50:44,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12545 states. [2021-06-05 06:50:44,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12545 to 6665. [2021-06-05 06:50:44,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6665 states, 6664 states have (on average 3.7554021608643455) internal successors, (25026), 6664 states have internal predecessors, (25026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:44,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6665 states to 6665 states and 25026 transitions. [2021-06-05 06:50:44,632 INFO L78 Accepts]: Start accepts. Automaton has 6665 states and 25026 transitions. Word has length 28 [2021-06-05 06:50:44,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:44,632 INFO L482 AbstractCegarLoop]: Abstraction has 6665 states and 25026 transitions. [2021-06-05 06:50:44,632 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:44,632 INFO L276 IsEmpty]: Start isEmpty. Operand 6665 states and 25026 transitions. [2021-06-05 06:50:44,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:44,641 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:44,641 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:44,842 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4093,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:44,842 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:44,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:44,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1910896092, now seen corresponding path program 88 times [2021-06-05 06:50:44,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:44,842 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685500878] [2021-06-05 06:50:44,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:44,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:44,877 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:44,877 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:44,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685500878] [2021-06-05 06:50:44,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685500878] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:44,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060395758] [2021-06-05 06:50:44,877 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:44,900 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:50:44,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:44,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:44,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:44,958 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:44,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060395758] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:44,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:44,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-05 06:50:44,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494738757] [2021-06-05 06:50:44,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:50:44,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:44,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:50:44,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:50:44,959 INFO L87 Difference]: Start difference. First operand 6665 states and 25026 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:45,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:45,578 INFO L93 Difference]: Finished difference Result 12678 states and 44148 transitions. [2021-06-05 06:50:45,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 06:50:45,578 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:45,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:45,603 INFO L225 Difference]: With dead ends: 12678 [2021-06-05 06:50:45,604 INFO L226 Difference]: Without dead ends: 12678 [2021-06-05 06:50:45,604 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 344.6ms TimeCoverageRelationStatistics Valid=542, Invalid=1908, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:50:45,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12678 states. [2021-06-05 06:50:45,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12678 to 6895. [2021-06-05 06:50:45,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6895 states, 6894 states have (on average 3.7358572671888597) internal successors, (25755), 6894 states have internal predecessors, (25755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:45,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6895 states to 6895 states and 25755 transitions. [2021-06-05 06:50:45,823 INFO L78 Accepts]: Start accepts. Automaton has 6895 states and 25755 transitions. Word has length 28 [2021-06-05 06:50:45,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:45,823 INFO L482 AbstractCegarLoop]: Abstraction has 6895 states and 25755 transitions. [2021-06-05 06:50:45,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:45,823 INFO L276 IsEmpty]: Start isEmpty. Operand 6895 states and 25755 transitions. [2021-06-05 06:50:45,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:45,833 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:45,833 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:46,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4094,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:46,033 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:46,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:46,034 INFO L82 PathProgramCache]: Analyzing trace with hash 827873436, now seen corresponding path program 89 times [2021-06-05 06:50:46,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:46,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359373640] [2021-06-05 06:50:46,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:46,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:46,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:46,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359373640] [2021-06-05 06:50:46,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359373640] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:46,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21339028] [2021-06-05 06:50:46,063 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:46,088 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:50:46,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:46,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:50:46,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:46,149 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:46,149 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21339028] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:46,149 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:46,149 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:50:46,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813293186] [2021-06-05 06:50:46,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:50:46,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:46,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:50:46,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:50:46,150 INFO L87 Difference]: Start difference. First operand 6895 states and 25755 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:46,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:46,522 INFO L93 Difference]: Finished difference Result 9371 states and 33680 transitions. [2021-06-05 06:50:46,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:50:46,522 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:46,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:46,538 INFO L225 Difference]: With dead ends: 9371 [2021-06-05 06:50:46,538 INFO L226 Difference]: Without dead ends: 9341 [2021-06-05 06:50:46,538 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 182.5ms TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:50:46,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9341 states. [2021-06-05 06:50:46,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9341 to 7751. [2021-06-05 06:50:46,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7751 states, 7750 states have (on average 3.7625806451612904) internal successors, (29160), 7750 states have internal predecessors, (29160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:46,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7751 states to 7751 states and 29160 transitions. [2021-06-05 06:50:46,675 INFO L78 Accepts]: Start accepts. Automaton has 7751 states and 29160 transitions. Word has length 28 [2021-06-05 06:50:46,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:46,675 INFO L482 AbstractCegarLoop]: Abstraction has 7751 states and 29160 transitions. [2021-06-05 06:50:46,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:46,675 INFO L276 IsEmpty]: Start isEmpty. Operand 7751 states and 29160 transitions. [2021-06-05 06:50:46,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:46,685 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:46,685 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:46,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4095 [2021-06-05 06:50:46,886 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:46,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:46,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1996015742, now seen corresponding path program 90 times [2021-06-05 06:50:46,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:46,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106717202] [2021-06-05 06:50:46,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:46,915 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:50:46,915 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:46,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106717202] [2021-06-05 06:50:46,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106717202] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:46,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841748691] [2021-06-05 06:50:46,915 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:46,940 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:50:46,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:46,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:50:46,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:46,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:50:46,998 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841748691] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:46,998 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:46,998 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:50:46,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696920178] [2021-06-05 06:50:46,998 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:50:46,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:46,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:50:46,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:50:46,998 INFO L87 Difference]: Start difference. First operand 7751 states and 29160 transitions. Second operand has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:47,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:47,319 INFO L93 Difference]: Finished difference Result 9993 states and 35743 transitions. [2021-06-05 06:50:47,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:50:47,319 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:47,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:47,336 INFO L225 Difference]: With dead ends: 9993 [2021-06-05 06:50:47,336 INFO L226 Difference]: Without dead ends: 9993 [2021-06-05 06:50:47,336 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 175.0ms TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:50:47,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9993 states. [2021-06-05 06:50:47,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9993 to 7791. [2021-06-05 06:50:47,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7791 states, 7790 states have (on average 3.7585365853658534) internal successors, (29279), 7790 states have internal predecessors, (29279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:47,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7791 states to 7791 states and 29279 transitions. [2021-06-05 06:50:47,507 INFO L78 Accepts]: Start accepts. Automaton has 7791 states and 29279 transitions. Word has length 28 [2021-06-05 06:50:47,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:47,507 INFO L482 AbstractCegarLoop]: Abstraction has 7791 states and 29279 transitions. [2021-06-05 06:50:47,507 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:47,507 INFO L276 IsEmpty]: Start isEmpty. Operand 7791 states and 29279 transitions. [2021-06-05 06:50:47,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:47,519 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:47,519 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:47,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4096,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:47,719 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:47,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:47,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1866074950, now seen corresponding path program 91 times [2021-06-05 06:50:47,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:47,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279731392] [2021-06-05 06:50:47,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:50:47,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:47,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279731392] [2021-06-05 06:50:47,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279731392] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:47,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462398491] [2021-06-05 06:50:47,751 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:47,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:47,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:47,825 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:50:47,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462398491] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:47,825 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:47,825 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-05 06:50:47,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070273899] [2021-06-05 06:50:47,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:50:47,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:47,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:50:47,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:50:47,826 INFO L87 Difference]: Start difference. First operand 7791 states and 29279 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:48,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:48,377 INFO L93 Difference]: Finished difference Result 13376 states and 47489 transitions. [2021-06-05 06:50:48,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:50:48,377 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:48,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:48,402 INFO L225 Difference]: With dead ends: 13376 [2021-06-05 06:50:48,402 INFO L226 Difference]: Without dead ends: 13372 [2021-06-05 06:50:48,403 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 295.3ms TimeCoverageRelationStatistics Valid=474, Invalid=1596, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:50:48,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13372 states. [2021-06-05 06:50:48,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13372 to 7707. [2021-06-05 06:50:48,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7707 states, 7706 states have (on average 3.7608357124318714) internal successors, (28981), 7706 states have internal predecessors, (28981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:48,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7707 states to 7707 states and 28981 transitions. [2021-06-05 06:50:48,628 INFO L78 Accepts]: Start accepts. Automaton has 7707 states and 28981 transitions. Word has length 28 [2021-06-05 06:50:48,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:48,628 INFO L482 AbstractCegarLoop]: Abstraction has 7707 states and 28981 transitions. [2021-06-05 06:50:48,628 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:48,628 INFO L276 IsEmpty]: Start isEmpty. Operand 7707 states and 28981 transitions. [2021-06-05 06:50:48,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:48,638 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:48,638 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:48,838 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4097 [2021-06-05 06:50:48,839 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:48,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:48,839 INFO L82 PathProgramCache]: Analyzing trace with hash 970254134, now seen corresponding path program 92 times [2021-06-05 06:50:48,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:48,839 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802628645] [2021-06-05 06:50:48,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:48,869 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:48,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802628645] [2021-06-05 06:50:48,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802628645] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:48,869 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834525857] [2021-06-05 06:50:48,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:48,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:50:48,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:48,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:50:48,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:48,951 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:48,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834525857] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:48,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:48,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:50:48,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079443530] [2021-06-05 06:50:48,952 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:50:48,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:48,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:50:48,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:50:48,952 INFO L87 Difference]: Start difference. First operand 7707 states and 28981 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:49,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:49,354 INFO L93 Difference]: Finished difference Result 10234 states and 36622 transitions. [2021-06-05 06:50:49,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:50:49,354 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:49,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:49,372 INFO L225 Difference]: With dead ends: 10234 [2021-06-05 06:50:49,372 INFO L226 Difference]: Without dead ends: 10234 [2021-06-05 06:50:49,372 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 218.3ms TimeCoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:50:49,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10234 states. [2021-06-05 06:50:49,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10234 to 7653. [2021-06-05 06:50:49,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7653 states, 7652 states have (on average 3.753659174072138) internal successors, (28723), 7652 states have internal predecessors, (28723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:49,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7653 states to 7653 states and 28723 transitions. [2021-06-05 06:50:49,507 INFO L78 Accepts]: Start accepts. Automaton has 7653 states and 28723 transitions. Word has length 28 [2021-06-05 06:50:49,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:49,508 INFO L482 AbstractCegarLoop]: Abstraction has 7653 states and 28723 transitions. [2021-06-05 06:50:49,508 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:49,508 INFO L276 IsEmpty]: Start isEmpty. Operand 7653 states and 28723 transitions. [2021-06-05 06:50:49,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:49,517 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:49,518 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:49,718 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4098,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:49,718 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:49,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:49,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1831555688, now seen corresponding path program 93 times [2021-06-05 06:50:49,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:49,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064505652] [2021-06-05 06:50:49,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:49,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:49,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064505652] [2021-06-05 06:50:49,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064505652] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:49,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124951711] [2021-06-05 06:50:49,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:49,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 06:50:49,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:49,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:49,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:49,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124951711] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:49,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:49,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 06:50:49,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042360461] [2021-06-05 06:50:49,834 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:50:49,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:49,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:50:49,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:50:49,835 INFO L87 Difference]: Start difference. First operand 7653 states and 28723 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:50,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:50,483 INFO L93 Difference]: Finished difference Result 13259 states and 46986 transitions. [2021-06-05 06:50:50,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 06:50:50,484 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:50,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:50,507 INFO L225 Difference]: With dead ends: 13259 [2021-06-05 06:50:50,507 INFO L226 Difference]: Without dead ends: 13247 [2021-06-05 06:50:50,508 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 358.8ms TimeCoverageRelationStatistics Valid=564, Invalid=1986, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:50:50,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13247 states. [2021-06-05 06:50:50,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13247 to 7653. [2021-06-05 06:50:50,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7653 states, 7652 states have (on average 3.7526136957658127) internal successors, (28715), 7652 states have internal predecessors, (28715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:50,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7653 states to 7653 states and 28715 transitions. [2021-06-05 06:50:50,681 INFO L78 Accepts]: Start accepts. Automaton has 7653 states and 28715 transitions. Word has length 28 [2021-06-05 06:50:50,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:50,681 INFO L482 AbstractCegarLoop]: Abstraction has 7653 states and 28715 transitions. [2021-06-05 06:50:50,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:50,681 INFO L276 IsEmpty]: Start isEmpty. Operand 7653 states and 28715 transitions. [2021-06-05 06:50:50,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:50,692 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:50,692 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:50,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4099 [2021-06-05 06:50:50,892 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:50,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:50,893 INFO L82 PathProgramCache]: Analyzing trace with hash 695130692, now seen corresponding path program 94 times [2021-06-05 06:50:50,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:50,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853077076] [2021-06-05 06:50:50,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:50,929 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:50,929 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:50,929 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853077076] [2021-06-05 06:50:50,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853077076] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:50,930 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499004965] [2021-06-05 06:50:50,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:50,952 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:50:50,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:50,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:50,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:51,019 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:51,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499004965] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:51,019 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:51,019 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:50:51,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764936900] [2021-06-05 06:50:51,020 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:50:51,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:51,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:50:51,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:50:51,020 INFO L87 Difference]: Start difference. First operand 7653 states and 28715 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:52,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:52,154 INFO L93 Difference]: Finished difference Result 20233 states and 70540 transitions. [2021-06-05 06:50:52,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-05 06:50:52,155 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:52,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:52,195 INFO L225 Difference]: With dead ends: 20233 [2021-06-05 06:50:52,195 INFO L226 Difference]: Without dead ends: 20233 [2021-06-05 06:50:52,196 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2104 ImplicationChecksByTransitivity, 687.8ms TimeCoverageRelationStatistics Valid=1218, Invalid=4482, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 06:50:52,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20233 states. [2021-06-05 06:50:52,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20233 to 10480. [2021-06-05 06:50:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10480 states, 10479 states have (on average 3.7973089035213285) internal successors, (39792), 10479 states have internal predecessors, (39792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:52,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10480 states to 10480 states and 39792 transitions. [2021-06-05 06:50:52,512 INFO L78 Accepts]: Start accepts. Automaton has 10480 states and 39792 transitions. Word has length 28 [2021-06-05 06:50:52,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:52,512 INFO L482 AbstractCegarLoop]: Abstraction has 10480 states and 39792 transitions. [2021-06-05 06:50:52,512 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:52,512 INFO L276 IsEmpty]: Start isEmpty. Operand 10480 states and 39792 transitions. [2021-06-05 06:50:52,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:52,527 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:52,527 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:52,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4100 [2021-06-05 06:50:52,728 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:52,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:52,728 INFO L82 PathProgramCache]: Analyzing trace with hash 776506780, now seen corresponding path program 95 times [2021-06-05 06:50:52,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:52,728 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135971189] [2021-06-05 06:50:52,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:52,764 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:52,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:52,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135971189] [2021-06-05 06:50:52,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135971189] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:52,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794627733] [2021-06-05 06:50:52,765 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:52,789 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:50:52,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:52,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:52,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:52,849 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:52,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794627733] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:52,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:52,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:50:52,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53321170] [2021-06-05 06:50:52,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:50:52,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:52,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:50:52,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:50:52,849 INFO L87 Difference]: Start difference. First operand 10480 states and 39792 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:53,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:53,829 INFO L93 Difference]: Finished difference Result 19460 states and 68525 transitions. [2021-06-05 06:50:53,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 06:50:53,830 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:53,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:53,865 INFO L225 Difference]: With dead ends: 19460 [2021-06-05 06:50:53,865 INFO L226 Difference]: Without dead ends: 19448 [2021-06-05 06:50:53,866 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1736 ImplicationChecksByTransitivity, 587.8ms TimeCoverageRelationStatistics Valid=1059, Invalid=3771, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:50:53,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19448 states. [2021-06-05 06:50:54,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19448 to 10294. [2021-06-05 06:50:54,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10294 states, 10293 states have (on average 3.8036529680365296) internal successors, (39151), 10293 states have internal predecessors, (39151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:54,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10294 states to 10294 states and 39151 transitions. [2021-06-05 06:50:54,143 INFO L78 Accepts]: Start accepts. Automaton has 10294 states and 39151 transitions. Word has length 28 [2021-06-05 06:50:54,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:54,144 INFO L482 AbstractCegarLoop]: Abstraction has 10294 states and 39151 transitions. [2021-06-05 06:50:54,144 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:54,144 INFO L276 IsEmpty]: Start isEmpty. Operand 10294 states and 39151 transitions. [2021-06-05 06:50:54,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:54,158 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:54,158 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:54,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4101 [2021-06-05 06:50:54,359 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:54,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:54,359 INFO L82 PathProgramCache]: Analyzing trace with hash -738585192, now seen corresponding path program 96 times [2021-06-05 06:50:54,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:54,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358109888] [2021-06-05 06:50:54,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:54,398 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:54,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:54,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358109888] [2021-06-05 06:50:54,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358109888] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:54,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696952867] [2021-06-05 06:50:54,398 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:54,423 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 06:50:54,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:54,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:54,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:54,486 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:54,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696952867] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:54,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:54,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:50:54,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135932768] [2021-06-05 06:50:54,486 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:50:54,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:54,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:50:54,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:50:54,487 INFO L87 Difference]: Start difference. First operand 10294 states and 39151 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:55,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:55,408 INFO L93 Difference]: Finished difference Result 19263 states and 67830 transitions. [2021-06-05 06:50:55,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 06:50:55,409 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:55,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:55,444 INFO L225 Difference]: With dead ends: 19263 [2021-06-05 06:50:55,444 INFO L226 Difference]: Without dead ends: 19227 [2021-06-05 06:50:55,444 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 528.1ms TimeCoverageRelationStatistics Valid=906, Invalid=3384, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 06:50:55,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19227 states. [2021-06-05 06:50:55,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19227 to 10338. [2021-06-05 06:50:55,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10338 states, 10337 states have (on average 3.8017800135435813) internal successors, (39299), 10337 states have internal predecessors, (39299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:55,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10338 states to 10338 states and 39299 transitions. [2021-06-05 06:50:55,707 INFO L78 Accepts]: Start accepts. Automaton has 10338 states and 39299 transitions. Word has length 28 [2021-06-05 06:50:55,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:55,707 INFO L482 AbstractCegarLoop]: Abstraction has 10338 states and 39299 transitions. [2021-06-05 06:50:55,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:55,707 INFO L276 IsEmpty]: Start isEmpty. Operand 10338 states and 39299 transitions. [2021-06-05 06:50:55,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:55,721 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:55,721 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:55,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4102,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:55,922 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:55,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:55,922 INFO L82 PathProgramCache]: Analyzing trace with hash 858541524, now seen corresponding path program 97 times [2021-06-05 06:50:55,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:55,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316590039] [2021-06-05 06:50:55,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:55,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:55,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:55,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316590039] [2021-06-05 06:50:55,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316590039] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:55,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492499673] [2021-06-05 06:50:55,959 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:55,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:55,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:56,075 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:56,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492499673] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:56,076 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:56,076 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 06:50:56,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090666397] [2021-06-05 06:50:56,076 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:50:56,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:56,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:50:56,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:50:56,076 INFO L87 Difference]: Start difference. First operand 10338 states and 39299 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:57,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:57,471 INFO L93 Difference]: Finished difference Result 19164 states and 67607 transitions. [2021-06-05 06:50:57,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-06-05 06:50:57,472 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:57,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:57,511 INFO L225 Difference]: With dead ends: 19164 [2021-06-05 06:50:57,511 INFO L226 Difference]: Without dead ends: 19164 [2021-06-05 06:50:57,511 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 874.0ms TimeCoverageRelationStatistics Valid=1494, Invalid=5646, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 06:50:57,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19164 states. [2021-06-05 06:50:57,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19164 to 10534. [2021-06-05 06:50:57,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10534 states, 10533 states have (on average 3.79274660590525) internal successors, (39949), 10533 states have internal predecessors, (39949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:57,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10534 states to 10534 states and 39949 transitions. [2021-06-05 06:50:57,797 INFO L78 Accepts]: Start accepts. Automaton has 10534 states and 39949 transitions. Word has length 28 [2021-06-05 06:50:57,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:57,797 INFO L482 AbstractCegarLoop]: Abstraction has 10534 states and 39949 transitions. [2021-06-05 06:50:57,797 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:57,797 INFO L276 IsEmpty]: Start isEmpty. Operand 10534 states and 39949 transitions. [2021-06-05 06:50:57,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:57,814 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:57,814 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:58,014 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4103,167 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:58,014 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:58,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:58,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1793386618, now seen corresponding path program 98 times [2021-06-05 06:50:58,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:58,014 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932432059] [2021-06-05 06:50:58,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:58,051 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:58,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:58,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932432059] [2021-06-05 06:50:58,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932432059] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:58,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589567875] [2021-06-05 06:50:58,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:58,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:50:58,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:58,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:58,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:58,155 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:58,155 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589567875] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:58,155 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:50:58,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 06:50:58,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071954126] [2021-06-05 06:50:58,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:50:58,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:50:58,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:50:58,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:50:58,156 INFO L87 Difference]: Start difference. First operand 10534 states and 39949 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:59,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:59,393 INFO L93 Difference]: Finished difference Result 18787 states and 66570 transitions. [2021-06-05 06:50:59,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 06:50:59,393 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:50:59,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:59,431 INFO L225 Difference]: With dead ends: 18787 [2021-06-05 06:50:59,431 INFO L226 Difference]: Without dead ends: 18775 [2021-06-05 06:50:59,432 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2073 ImplicationChecksByTransitivity, 713.9ms TimeCoverageRelationStatistics Valid=1305, Invalid=4547, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 06:50:59,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18775 states. [2021-06-05 06:50:59,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18775 to 10416. [2021-06-05 06:50:59,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10416 states, 10415 states have (on average 3.797215554488718) internal successors, (39548), 10415 states have internal predecessors, (39548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:59,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10416 states to 10416 states and 39548 transitions. [2021-06-05 06:50:59,715 INFO L78 Accepts]: Start accepts. Automaton has 10416 states and 39548 transitions. Word has length 28 [2021-06-05 06:50:59,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:59,715 INFO L482 AbstractCegarLoop]: Abstraction has 10416 states and 39548 transitions. [2021-06-05 06:50:59,715 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:59,715 INFO L276 IsEmpty]: Start isEmpty. Operand 10416 states and 39548 transitions. [2021-06-05 06:50:59,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:50:59,730 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:59,730 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:50:59,930 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4104,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:59,930 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:59,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:59,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1234123500, now seen corresponding path program 99 times [2021-06-05 06:50:59,931 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:59,931 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305999052] [2021-06-05 06:50:59,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:50:59,968 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:59,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305999052] [2021-06-05 06:50:59,968 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305999052] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:59,968 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214335424] [2021-06-05 06:50:59,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:59,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 06:50:59,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:59,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:50:59,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:00,066 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:00,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214335424] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:00,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:00,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-06-05 06:51:00,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755243022] [2021-06-05 06:51:00,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:51:00,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:00,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:51:00,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:51:00,067 INFO L87 Difference]: Start difference. First operand 10416 states and 39548 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:01,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:01,030 INFO L93 Difference]: Finished difference Result 18027 states and 64486 transitions. [2021-06-05 06:51:01,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 06:51:01,031 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:01,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:01,064 INFO L225 Difference]: With dead ends: 18027 [2021-06-05 06:51:01,064 INFO L226 Difference]: Without dead ends: 17991 [2021-06-05 06:51:01,065 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1442 ImplicationChecksByTransitivity, 553.8ms TimeCoverageRelationStatistics Valid=951, Invalid=3471, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:51:01,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17991 states. [2021-06-05 06:51:01,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17991 to 10440. [2021-06-05 06:51:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10440 states, 10439 states have (on average 3.796149056423029) internal successors, (39628), 10439 states have internal predecessors, (39628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:01,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10440 states to 10440 states and 39628 transitions. [2021-06-05 06:51:01,343 INFO L78 Accepts]: Start accepts. Automaton has 10440 states and 39628 transitions. Word has length 28 [2021-06-05 06:51:01,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:01,343 INFO L482 AbstractCegarLoop]: Abstraction has 10440 states and 39628 transitions. [2021-06-05 06:51:01,343 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:01,343 INFO L276 IsEmpty]: Start isEmpty. Operand 10440 states and 39628 transitions. [2021-06-05 06:51:01,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:01,358 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:01,358 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:01,558 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4105 [2021-06-05 06:51:01,559 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:01,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:01,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1584729920, now seen corresponding path program 100 times [2021-06-05 06:51:01,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:01,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002040619] [2021-06-05 06:51:01,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:01,591 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:01,591 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:01,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002040619] [2021-06-05 06:51:01,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002040619] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:01,591 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615485900] [2021-06-05 06:51:01,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:01,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:51:01,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:01,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:01,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:01,709 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:01,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615485900] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:01,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:01,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:51:01,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853013390] [2021-06-05 06:51:01,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:51:01,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:01,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:51:01,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:51:01,710 INFO L87 Difference]: Start difference. First operand 10440 states and 39628 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:02,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:02,916 INFO L93 Difference]: Finished difference Result 26119 states and 92958 transitions. [2021-06-05 06:51:02,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 06:51:02,916 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:02,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:02,970 INFO L225 Difference]: With dead ends: 26119 [2021-06-05 06:51:02,970 INFO L226 Difference]: Without dead ends: 26119 [2021-06-05 06:51:02,971 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2318 ImplicationChecksByTransitivity, 702.5ms TimeCoverageRelationStatistics Valid=1326, Invalid=4680, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 06:51:02,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26119 states. [2021-06-05 06:51:03,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26119 to 10727. [2021-06-05 06:51:03,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10727 states, 10726 states have (on average 3.821928025358941) internal successors, (40994), 10726 states have internal predecessors, (40994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:03,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10727 states to 10727 states and 40994 transitions. [2021-06-05 06:51:03,338 INFO L78 Accepts]: Start accepts. Automaton has 10727 states and 40994 transitions. Word has length 28 [2021-06-05 06:51:03,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:03,338 INFO L482 AbstractCegarLoop]: Abstraction has 10727 states and 40994 transitions. [2021-06-05 06:51:03,338 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:03,338 INFO L276 IsEmpty]: Start isEmpty. Operand 10727 states and 40994 transitions. [2021-06-05 06:51:03,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:03,353 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:03,353 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:03,554 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4106,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:03,554 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:03,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:03,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1017777840, now seen corresponding path program 101 times [2021-06-05 06:51:03,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:03,554 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510012181] [2021-06-05 06:51:03,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:03,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:03,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510012181] [2021-06-05 06:51:03,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510012181] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:03,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696153265] [2021-06-05 06:51:03,586 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:03,612 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:51:03,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:03,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:03,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:03,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696153265] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:03,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:03,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:51:03,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872331897] [2021-06-05 06:51:03,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:51:03,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:03,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:51:03,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:51:03,707 INFO L87 Difference]: Start difference. First operand 10727 states and 40994 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:04,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:04,849 INFO L93 Difference]: Finished difference Result 25550 states and 91560 transitions. [2021-06-05 06:51:04,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-05 06:51:04,849 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:04,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:04,904 INFO L225 Difference]: With dead ends: 25550 [2021-06-05 06:51:04,905 INFO L226 Difference]: Without dead ends: 25550 [2021-06-05 06:51:04,905 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2286 ImplicationChecksByTransitivity, 693.6ms TimeCoverageRelationStatistics Valid=1315, Invalid=4537, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 06:51:04,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25550 states. [2021-06-05 06:51:05,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25550 to 10629. [2021-06-05 06:51:05,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10629 states, 10628 states have (on average 3.8091832894241624) internal successors, (40484), 10628 states have internal predecessors, (40484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:05,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10629 states to 10629 states and 40484 transitions. [2021-06-05 06:51:05,266 INFO L78 Accepts]: Start accepts. Automaton has 10629 states and 40484 transitions. Word has length 28 [2021-06-05 06:51:05,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:05,266 INFO L482 AbstractCegarLoop]: Abstraction has 10629 states and 40484 transitions. [2021-06-05 06:51:05,266 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:05,266 INFO L276 IsEmpty]: Start isEmpty. Operand 10629 states and 40484 transitions. [2021-06-05 06:51:05,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:05,281 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:05,281 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:05,481 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4107 [2021-06-05 06:51:05,481 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:05,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:05,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1216329654, now seen corresponding path program 102 times [2021-06-05 06:51:05,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:05,482 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056060795] [2021-06-05 06:51:05,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:05,517 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:05,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:05,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056060795] [2021-06-05 06:51:05,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056060795] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:05,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638381526] [2021-06-05 06:51:05,517 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:05,543 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:51:05,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:05,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:05,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:05,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638381526] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:05,631 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:05,631 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:51:05,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157937035] [2021-06-05 06:51:05,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:51:05,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:05,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:51:05,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:51:05,632 INFO L87 Difference]: Start difference. First operand 10629 states and 40484 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:06,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:06,434 INFO L93 Difference]: Finished difference Result 20289 states and 72951 transitions. [2021-06-05 06:51:06,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 06:51:06,435 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:06,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:06,476 INFO L225 Difference]: With dead ends: 20289 [2021-06-05 06:51:06,476 INFO L226 Difference]: Without dead ends: 20289 [2021-06-05 06:51:06,477 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 437.9ms TimeCoverageRelationStatistics Valid=668, Invalid=2194, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 06:51:06,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20289 states. [2021-06-05 06:51:06,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20289 to 10638. [2021-06-05 06:51:06,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10638 states, 10637 states have (on average 3.8081225909560965) internal successors, (40507), 10637 states have internal predecessors, (40507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:06,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10638 states to 10638 states and 40507 transitions. [2021-06-05 06:51:06,753 INFO L78 Accepts]: Start accepts. Automaton has 10638 states and 40507 transitions. Word has length 28 [2021-06-05 06:51:06,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:06,753 INFO L482 AbstractCegarLoop]: Abstraction has 10638 states and 40507 transitions. [2021-06-05 06:51:06,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:06,753 INFO L276 IsEmpty]: Start isEmpty. Operand 10638 states and 40507 transitions. [2021-06-05 06:51:06,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:06,769 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:06,769 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:06,984 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4108,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:06,985 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:06,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:06,985 INFO L82 PathProgramCache]: Analyzing trace with hash 541607776, now seen corresponding path program 103 times [2021-06-05 06:51:06,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:06,985 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328122584] [2021-06-05 06:51:06,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:07,030 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:07,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:07,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328122584] [2021-06-05 06:51:07,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328122584] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:07,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506855342] [2021-06-05 06:51:07,030 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:07,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:07,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:07,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506855342] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:07,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:07,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:51:07,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592386942] [2021-06-05 06:51:07,138 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:51:07,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:07,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:51:07,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:51:07,139 INFO L87 Difference]: Start difference. First operand 10638 states and 40507 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:07,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:07,913 INFO L93 Difference]: Finished difference Result 18838 states and 68311 transitions. [2021-06-05 06:51:07,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 06:51:07,913 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:07,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:07,952 INFO L225 Difference]: With dead ends: 18838 [2021-06-05 06:51:07,952 INFO L226 Difference]: Without dead ends: 18838 [2021-06-05 06:51:07,952 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 460.2ms TimeCoverageRelationStatistics Valid=580, Invalid=1870, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:51:07,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18838 states. [2021-06-05 06:51:08,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18838 to 10650. [2021-06-05 06:51:08,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10650 states, 10649 states have (on average 3.807399755845619) internal successors, (40545), 10649 states have internal predecessors, (40545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:08,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10650 states to 10650 states and 40545 transitions. [2021-06-05 06:51:08,254 INFO L78 Accepts]: Start accepts. Automaton has 10650 states and 40545 transitions. Word has length 28 [2021-06-05 06:51:08,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:08,255 INFO L482 AbstractCegarLoop]: Abstraction has 10650 states and 40545 transitions. [2021-06-05 06:51:08,255 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:08,255 INFO L276 IsEmpty]: Start isEmpty. Operand 10650 states and 40545 transitions. [2021-06-05 06:51:08,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:08,270 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:08,270 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:08,470 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4109,173 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:08,470 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:08,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:08,470 INFO L82 PathProgramCache]: Analyzing trace with hash -2099999344, now seen corresponding path program 104 times [2021-06-05 06:51:08,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:08,471 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123412077] [2021-06-05 06:51:08,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:08,502 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:08,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123412077] [2021-06-05 06:51:08,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123412077] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:08,502 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442501973] [2021-06-05 06:51:08,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:08,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:51:08,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:08,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:08,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:08,622 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:08,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442501973] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:08,622 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:08,622 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:51:08,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652131357] [2021-06-05 06:51:08,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:51:08,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:08,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:51:08,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:51:08,623 INFO L87 Difference]: Start difference. First operand 10650 states and 40545 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:09,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:09,654 INFO L93 Difference]: Finished difference Result 19442 states and 70046 transitions. [2021-06-05 06:51:09,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 06:51:09,655 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:09,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:09,692 INFO L225 Difference]: With dead ends: 19442 [2021-06-05 06:51:09,693 INFO L226 Difference]: Without dead ends: 19442 [2021-06-05 06:51:09,693 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1847 ImplicationChecksByTransitivity, 645.4ms TimeCoverageRelationStatistics Valid=1084, Invalid=4028, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 06:51:09,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19442 states. [2021-06-05 06:51:09,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19442 to 10758. [2021-06-05 06:51:09,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10758 states, 10757 states have (on average 3.8002231105326763) internal successors, (40879), 10757 states have internal predecessors, (40879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:10,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10758 states to 10758 states and 40879 transitions. [2021-06-05 06:51:10,009 INFO L78 Accepts]: Start accepts. Automaton has 10758 states and 40879 transitions. Word has length 28 [2021-06-05 06:51:10,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:10,010 INFO L482 AbstractCegarLoop]: Abstraction has 10758 states and 40879 transitions. [2021-06-05 06:51:10,010 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:10,010 INFO L276 IsEmpty]: Start isEmpty. Operand 10758 states and 40879 transitions. [2021-06-05 06:51:10,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:10,024 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:10,024 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:10,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 174 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4110 [2021-06-05 06:51:10,225 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:10,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:10,225 INFO L82 PathProgramCache]: Analyzing trace with hash -456960190, now seen corresponding path program 105 times [2021-06-05 06:51:10,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:10,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634546194] [2021-06-05 06:51:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:10,257 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:10,257 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:10,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634546194] [2021-06-05 06:51:10,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634546194] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:10,257 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920292559] [2021-06-05 06:51:10,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:10,282 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 06:51:10,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:10,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:10,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:10,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920292559] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:10,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:10,373 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:51:10,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534389049] [2021-06-05 06:51:10,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:51:10,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:10,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:51:10,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:51:10,373 INFO L87 Difference]: Start difference. First operand 10758 states and 40879 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:11,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:11,263 INFO L93 Difference]: Finished difference Result 19017 states and 68890 transitions. [2021-06-05 06:51:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 06:51:11,263 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:11,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:11,301 INFO L225 Difference]: With dead ends: 19017 [2021-06-05 06:51:11,301 INFO L226 Difference]: Without dead ends: 19013 [2021-06-05 06:51:11,302 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 542.2ms TimeCoverageRelationStatistics Valid=880, Invalid=2902, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:51:11,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19013 states. [2021-06-05 06:51:11,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19013 to 10684. [2021-06-05 06:51:11,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10684 states, 10683 states have (on average 3.804174857249836) internal successors, (40640), 10683 states have internal predecessors, (40640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:11,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10684 states to 10684 states and 40640 transitions. [2021-06-05 06:51:11,566 INFO L78 Accepts]: Start accepts. Automaton has 10684 states and 40640 transitions. Word has length 28 [2021-06-05 06:51:11,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:11,566 INFO L482 AbstractCegarLoop]: Abstraction has 10684 states and 40640 transitions. [2021-06-05 06:51:11,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:11,566 INFO L276 IsEmpty]: Start isEmpty. Operand 10684 states and 40640 transitions. [2021-06-05 06:51:11,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:11,581 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:11,581 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:11,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4111 [2021-06-05 06:51:11,782 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:11,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:11,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1748478926, now seen corresponding path program 106 times [2021-06-05 06:51:11,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:11,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226820998] [2021-06-05 06:51:11,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:11,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:11,819 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:11,820 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:11,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226820998] [2021-06-05 06:51:11,820 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226820998] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:11,820 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427453467] [2021-06-05 06:51:11,820 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:11,842 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:51:11,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:11,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:11,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:11,929 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:11,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427453467] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:11,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:11,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:51:11,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559440429] [2021-06-05 06:51:11,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:51:11,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:11,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:51:11,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:51:11,930 INFO L87 Difference]: Start difference. First operand 10684 states and 40640 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:12,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:12,935 INFO L93 Difference]: Finished difference Result 18448 states and 66382 transitions. [2021-06-05 06:51:12,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 06:51:12,935 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:12,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:12,968 INFO L225 Difference]: With dead ends: 18448 [2021-06-05 06:51:12,968 INFO L226 Difference]: Without dead ends: 18448 [2021-06-05 06:51:12,969 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 612.3ms TimeCoverageRelationStatistics Valid=1023, Invalid=3669, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 06:51:12,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18448 states. [2021-06-05 06:51:13,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18448 to 10911. [2021-06-05 06:51:13,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10911 states, 10910 states have (on average 3.807332722273144) internal successors, (41538), 10910 states have internal predecessors, (41538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:13,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10911 states to 10911 states and 41538 transitions. [2021-06-05 06:51:13,222 INFO L78 Accepts]: Start accepts. Automaton has 10911 states and 41538 transitions. Word has length 28 [2021-06-05 06:51:13,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:13,222 INFO L482 AbstractCegarLoop]: Abstraction has 10911 states and 41538 transitions. [2021-06-05 06:51:13,222 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:13,222 INFO L276 IsEmpty]: Start isEmpty. Operand 10911 states and 41538 transitions. [2021-06-05 06:51:13,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:13,237 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:13,237 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:13,437 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4112 [2021-06-05 06:51:13,438 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:13,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:13,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1366168690, now seen corresponding path program 107 times [2021-06-05 06:51:13,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:13,438 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995939354] [2021-06-05 06:51:13,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:13,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:13,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995939354] [2021-06-05 06:51:13,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995939354] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:13,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682299997] [2021-06-05 06:51:13,476 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:13,500 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 06:51:13,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:13,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:13,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:13,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682299997] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:13,579 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:13,579 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:51:13,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299418775] [2021-06-05 06:51:13,579 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:51:13,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:13,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:51:13,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:51:13,580 INFO L87 Difference]: Start difference. First operand 10911 states and 41538 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:14,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:14,451 INFO L93 Difference]: Finished difference Result 18161 states and 65584 transitions. [2021-06-05 06:51:14,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 06:51:14,451 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:14,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:14,485 INFO L225 Difference]: With dead ends: 18161 [2021-06-05 06:51:14,485 INFO L226 Difference]: Without dead ends: 18149 [2021-06-05 06:51:14,485 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 518.2ms TimeCoverageRelationStatistics Valid=893, Invalid=3267, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 06:51:14,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18149 states. [2021-06-05 06:51:14,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18149 to 11013. [2021-06-05 06:51:14,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11013 states, 11012 states have (on average 3.801398474391573) internal successors, (41861), 11012 states have internal predecessors, (41861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:14,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11013 states to 11013 states and 41861 transitions. [2021-06-05 06:51:14,754 INFO L78 Accepts]: Start accepts. Automaton has 11013 states and 41861 transitions. Word has length 28 [2021-06-05 06:51:14,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:14,754 INFO L482 AbstractCegarLoop]: Abstraction has 11013 states and 41861 transitions. [2021-06-05 06:51:14,754 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:14,754 INFO L276 IsEmpty]: Start isEmpty. Operand 11013 states and 41861 transitions. [2021-06-05 06:51:14,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:14,769 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:14,770 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:14,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4113,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:14,970 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:14,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:14,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1561241668, now seen corresponding path program 70 times [2021-06-05 06:51:14,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:14,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100545798] [2021-06-05 06:51:14,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:15,009 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:15,009 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:15,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100545798] [2021-06-05 06:51:15,009 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100545798] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:15,009 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832493658] [2021-06-05 06:51:15,009 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:15,032 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:51:15,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:15,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:15,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:15,090 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:15,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832493658] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:15,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:15,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 06:51:15,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425296661] [2021-06-05 06:51:15,091 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:51:15,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:15,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:51:15,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:51:15,091 INFO L87 Difference]: Start difference. First operand 11013 states and 41861 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:15,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:15,523 INFO L93 Difference]: Finished difference Result 15676 states and 57990 transitions. [2021-06-05 06:51:15,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:51:15,523 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:15,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:15,553 INFO L225 Difference]: With dead ends: 15676 [2021-06-05 06:51:15,553 INFO L226 Difference]: Without dead ends: 15676 [2021-06-05 06:51:15,553 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 260.1ms TimeCoverageRelationStatistics Valid=303, Invalid=887, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:51:15,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15676 states. [2021-06-05 06:51:15,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15676 to 11085. [2021-06-05 06:51:15,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11085 states, 11084 states have (on average 3.7969144713099965) internal successors, (42085), 11084 states have internal predecessors, (42085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:15,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11085 states to 11085 states and 42085 transitions. [2021-06-05 06:51:15,780 INFO L78 Accepts]: Start accepts. Automaton has 11085 states and 42085 transitions. Word has length 28 [2021-06-05 06:51:15,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:15,780 INFO L482 AbstractCegarLoop]: Abstraction has 11085 states and 42085 transitions. [2021-06-05 06:51:15,780 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:15,780 INFO L276 IsEmpty]: Start isEmpty. Operand 11085 states and 42085 transitions. [2021-06-05 06:51:15,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:15,796 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:15,796 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:15,996 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4114,178 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:15,997 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:15,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:15,997 INFO L82 PathProgramCache]: Analyzing trace with hash 963219036, now seen corresponding path program 71 times [2021-06-05 06:51:15,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:15,997 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105984913] [2021-06-05 06:51:15,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:16,028 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:16,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:16,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105984913] [2021-06-05 06:51:16,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105984913] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:16,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127130761] [2021-06-05 06:51:16,029 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:16,053 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:51:16,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:16,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:16,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:16,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127130761] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:16,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:16,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:51:16,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377095210] [2021-06-05 06:51:16,111 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:51:16,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:16,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:51:16,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:51:16,112 INFO L87 Difference]: Start difference. First operand 11085 states and 42085 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:16,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:16,598 INFO L93 Difference]: Finished difference Result 16651 states and 60827 transitions. [2021-06-05 06:51:16,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:51:16,598 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:16,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:16,629 INFO L225 Difference]: With dead ends: 16651 [2021-06-05 06:51:16,630 INFO L226 Difference]: Without dead ends: 16651 [2021-06-05 06:51:16,630 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 273.2ms TimeCoverageRelationStatistics Valid=390, Invalid=1332, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 06:51:16,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16651 states. [2021-06-05 06:51:16,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16651 to 11413. [2021-06-05 06:51:16,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11413 states, 11412 states have (on average 3.7797932001402033) internal successors, (43135), 11412 states have internal predecessors, (43135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:16,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11413 states to 11413 states and 43135 transitions. [2021-06-05 06:51:16,881 INFO L78 Accepts]: Start accepts. Automaton has 11413 states and 43135 transitions. Word has length 28 [2021-06-05 06:51:16,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:16,881 INFO L482 AbstractCegarLoop]: Abstraction has 11413 states and 43135 transitions. [2021-06-05 06:51:16,882 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:16,882 INFO L276 IsEmpty]: Start isEmpty. Operand 11413 states and 43135 transitions. [2021-06-05 06:51:16,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:16,897 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:16,897 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:17,098 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4115,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:17,098 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:17,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:17,098 INFO L82 PathProgramCache]: Analyzing trace with hash 918397894, now seen corresponding path program 72 times [2021-06-05 06:51:17,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:17,098 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364443466] [2021-06-05 06:51:17,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:17,129 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:17,130 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:17,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364443466] [2021-06-05 06:51:17,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364443466] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:17,130 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073774373] [2021-06-05 06:51:17,130 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:17,157 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 06:51:17,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:17,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:17,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:17,209 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:17,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073774373] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:17,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:17,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:51:17,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240846345] [2021-06-05 06:51:17,209 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:51:17,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:17,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:51:17,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:51:17,210 INFO L87 Difference]: Start difference. First operand 11413 states and 43135 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:17,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:17,603 INFO L93 Difference]: Finished difference Result 16138 states and 59485 transitions. [2021-06-05 06:51:17,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:51:17,603 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:17,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:17,634 INFO L225 Difference]: With dead ends: 16138 [2021-06-05 06:51:17,634 INFO L226 Difference]: Without dead ends: 16130 [2021-06-05 06:51:17,634 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 208.4ms TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:51:17,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16130 states. [2021-06-05 06:51:17,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16130 to 11353. [2021-06-05 06:51:17,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11353 states, 11352 states have (on average 3.781800563777308) internal successors, (42931), 11352 states have internal predecessors, (42931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:17,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11353 states to 11353 states and 42931 transitions. [2021-06-05 06:51:17,902 INFO L78 Accepts]: Start accepts. Automaton has 11353 states and 42931 transitions. Word has length 28 [2021-06-05 06:51:17,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:17,902 INFO L482 AbstractCegarLoop]: Abstraction has 11353 states and 42931 transitions. [2021-06-05 06:51:17,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:17,903 INFO L276 IsEmpty]: Start isEmpty. Operand 11353 states and 42931 transitions. [2021-06-05 06:51:17,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:17,918 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:17,918 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:18,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4116,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:18,119 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:18,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:18,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1515734552, now seen corresponding path program 73 times [2021-06-05 06:51:18,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:18,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635865560] [2021-06-05 06:51:18,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:18,158 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:18,158 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:18,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635865560] [2021-06-05 06:51:18,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635865560] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:18,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701991917] [2021-06-05 06:51:18,158 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:18,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:18,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:18,234 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:18,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701991917] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:18,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:18,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 06:51:18,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409706084] [2021-06-05 06:51:18,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:51:18,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:18,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:51:18,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:51:18,234 INFO L87 Difference]: Start difference. First operand 11353 states and 42931 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:18,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:18,657 INFO L93 Difference]: Finished difference Result 16038 states and 59197 transitions. [2021-06-05 06:51:18,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 06:51:18,658 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:18,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:18,688 INFO L225 Difference]: With dead ends: 16038 [2021-06-05 06:51:18,688 INFO L226 Difference]: Without dead ends: 16026 [2021-06-05 06:51:18,689 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 224.5ms TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:51:18,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16026 states. [2021-06-05 06:51:18,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16026 to 11325. [2021-06-05 06:51:18,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11325 states, 11324 states have (on average 3.7826739667961853) internal successors, (42835), 11324 states have internal predecessors, (42835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:18,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11325 states to 11325 states and 42835 transitions. [2021-06-05 06:51:18,938 INFO L78 Accepts]: Start accepts. Automaton has 11325 states and 42835 transitions. Word has length 28 [2021-06-05 06:51:18,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:18,938 INFO L482 AbstractCegarLoop]: Abstraction has 11325 states and 42835 transitions. [2021-06-05 06:51:18,938 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:18,938 INFO L276 IsEmpty]: Start isEmpty. Operand 11325 states and 42835 transitions. [2021-06-05 06:51:18,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:18,955 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:18,956 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:19,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4117,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:19,156 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:19,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:19,156 INFO L82 PathProgramCache]: Analyzing trace with hash 860325080, now seen corresponding path program 74 times [2021-06-05 06:51:19,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:19,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767197263] [2021-06-05 06:51:19,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:19,189 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:19,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:19,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767197263] [2021-06-05 06:51:19,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767197263] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:19,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214021982] [2021-06-05 06:51:19,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:19,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:51:19,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:19,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:19,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:19,297 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:19,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214021982] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:19,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:19,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:51:19,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389551488] [2021-06-05 06:51:19,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:51:19,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:19,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:51:19,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:51:19,298 INFO L87 Difference]: Start difference. First operand 11325 states and 42835 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:20,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:20,181 INFO L93 Difference]: Finished difference Result 21822 states and 77756 transitions. [2021-06-05 06:51:20,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:51:20,182 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:20,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:20,222 INFO L225 Difference]: With dead ends: 21822 [2021-06-05 06:51:20,222 INFO L226 Difference]: Without dead ends: 21822 [2021-06-05 06:51:20,222 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 478.7ms TimeCoverageRelationStatistics Valid=798, Invalid=2394, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 06:51:20,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21822 states. [2021-06-05 06:51:20,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21822 to 11307. [2021-06-05 06:51:20,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11307 states, 11306 states have (on average 3.7813550327259864) internal successors, (42752), 11306 states have internal predecessors, (42752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:20,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11307 states to 11307 states and 42752 transitions. [2021-06-05 06:51:20,523 INFO L78 Accepts]: Start accepts. Automaton has 11307 states and 42752 transitions. Word has length 28 [2021-06-05 06:51:20,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:20,523 INFO L482 AbstractCegarLoop]: Abstraction has 11307 states and 42752 transitions. [2021-06-05 06:51:20,523 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 15 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:20,523 INFO L276 IsEmpty]: Start isEmpty. Operand 11307 states and 42752 transitions. [2021-06-05 06:51:20,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:20,538 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:20,538 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:20,739 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4118,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:20,739 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:20,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:20,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1387096988, now seen corresponding path program 108 times [2021-06-05 06:51:20,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:20,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421450034] [2021-06-05 06:51:20,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:20,764 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:20,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:20,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421450034] [2021-06-05 06:51:20,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421450034] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:20,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741207827] [2021-06-05 06:51:20,764 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:20,786 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:51:20,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:20,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:51:20,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:20,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:20,864 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741207827] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:20,864 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:20,864 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 06:51:20,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469762776] [2021-06-05 06:51:20,864 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:51:20,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:20,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:51:20,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:51:20,865 INFO L87 Difference]: Start difference. First operand 11307 states and 42752 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:21,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:21,532 INFO L93 Difference]: Finished difference Result 17653 states and 63688 transitions. [2021-06-05 06:51:21,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 06:51:21,532 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:21,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:21,563 INFO L225 Difference]: With dead ends: 17653 [2021-06-05 06:51:21,563 INFO L226 Difference]: Without dead ends: 17640 [2021-06-05 06:51:21,564 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 342.9ms TimeCoverageRelationStatistics Valid=478, Invalid=1414, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:51:21,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17640 states. [2021-06-05 06:51:21,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17640 to 12618. [2021-06-05 06:51:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12618 states, 12617 states have (on average 3.8484584291035904) internal successors, (48556), 12617 states have internal predecessors, (48556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12618 states to 12618 states and 48556 transitions. [2021-06-05 06:51:21,841 INFO L78 Accepts]: Start accepts. Automaton has 12618 states and 48556 transitions. Word has length 28 [2021-06-05 06:51:21,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:21,841 INFO L482 AbstractCegarLoop]: Abstraction has 12618 states and 48556 transitions. [2021-06-05 06:51:21,841 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:21,841 INFO L276 IsEmpty]: Start isEmpty. Operand 12618 states and 48556 transitions. [2021-06-05 06:51:21,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:21,860 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:21,860 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:22,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4119 [2021-06-05 06:51:22,061 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:22,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:22,062 INFO L82 PathProgramCache]: Analyzing trace with hash 2059509770, now seen corresponding path program 109 times [2021-06-05 06:51:22,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:22,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32998649] [2021-06-05 06:51:22,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:22,086 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:22,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:22,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32998649] [2021-06-05 06:51:22,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32998649] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:22,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933812625] [2021-06-05 06:51:22,086 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:22,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:51:22,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:22,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933812625] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:22,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:22,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 06:51:22,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509823394] [2021-06-05 06:51:22,192 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:51:22,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:22,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:51:22,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:51:22,192 INFO L87 Difference]: Start difference. First operand 12618 states and 48556 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:23,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:23,053 INFO L93 Difference]: Finished difference Result 17754 states and 63945 transitions. [2021-06-05 06:51:23,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 06:51:23,054 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:23,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:23,087 INFO L225 Difference]: With dead ends: 17754 [2021-06-05 06:51:23,087 INFO L226 Difference]: Without dead ends: 17748 [2021-06-05 06:51:23,088 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 437.4ms TimeCoverageRelationStatistics Valid=541, Invalid=1715, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 06:51:23,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17748 states. [2021-06-05 06:51:23,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17748 to 12591. [2021-06-05 06:51:23,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12591 states, 12590 states have (on average 3.8476568705321683) internal successors, (48442), 12590 states have internal predecessors, (48442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:23,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12591 states to 12591 states and 48442 transitions. [2021-06-05 06:51:23,447 INFO L78 Accepts]: Start accepts. Automaton has 12591 states and 48442 transitions. Word has length 28 [2021-06-05 06:51:23,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:23,447 INFO L482 AbstractCegarLoop]: Abstraction has 12591 states and 48442 transitions. [2021-06-05 06:51:23,448 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:23,448 INFO L276 IsEmpty]: Start isEmpty. Operand 12591 states and 48442 transitions. [2021-06-05 06:51:23,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:23,469 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:23,469 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:23,669 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4120 [2021-06-05 06:51:23,669 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:23,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:23,670 INFO L82 PathProgramCache]: Analyzing trace with hash 244170948, now seen corresponding path program 110 times [2021-06-05 06:51:23,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:23,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891704949] [2021-06-05 06:51:23,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:23,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:23,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891704949] [2021-06-05 06:51:23,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891704949] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:23,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332423187] [2021-06-05 06:51:23,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:23,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:51:23,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:23,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:51:23,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:23,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:23,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332423187] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:23,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:23,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-06-05 06:51:23,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499018778] [2021-06-05 06:51:23,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:51:23,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:23,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:51:23,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:51:23,788 INFO L87 Difference]: Start difference. First operand 12591 states and 48442 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:24,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:24,378 INFO L93 Difference]: Finished difference Result 19810 states and 71449 transitions. [2021-06-05 06:51:24,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:51:24,379 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:24,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:24,416 INFO L225 Difference]: With dead ends: 19810 [2021-06-05 06:51:24,416 INFO L226 Difference]: Without dead ends: 19797 [2021-06-05 06:51:24,417 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 301.7ms TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:51:24,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19797 states. [2021-06-05 06:51:24,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19797 to 12651. [2021-06-05 06:51:24,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12651 states, 12650 states have (on average 3.8523320158102767) internal successors, (48732), 12650 states have internal predecessors, (48732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:24,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12651 states to 12651 states and 48732 transitions. [2021-06-05 06:51:24,712 INFO L78 Accepts]: Start accepts. Automaton has 12651 states and 48732 transitions. Word has length 28 [2021-06-05 06:51:24,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:24,712 INFO L482 AbstractCegarLoop]: Abstraction has 12651 states and 48732 transitions. [2021-06-05 06:51:24,712 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:24,712 INFO L276 IsEmpty]: Start isEmpty. Operand 12651 states and 48732 transitions. [2021-06-05 06:51:24,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:24,732 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:24,732 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:24,932 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4121 [2021-06-05 06:51:24,933 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:24,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:24,933 INFO L82 PathProgramCache]: Analyzing trace with hash -438573382, now seen corresponding path program 111 times [2021-06-05 06:51:24,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:24,933 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211605118] [2021-06-05 06:51:24,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:24,957 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:24,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:24,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211605118] [2021-06-05 06:51:24,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211605118] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:24,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465171241] [2021-06-05 06:51:24,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:24,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:51:24,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:24,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:51:24,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:25,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465171241] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:25,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:25,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-06-05 06:51:25,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521914903] [2021-06-05 06:51:25,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:51:25,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:25,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:51:25,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:51:25,070 INFO L87 Difference]: Start difference. First operand 12651 states and 48732 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:25,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:25,745 INFO L93 Difference]: Finished difference Result 20959 states and 75039 transitions. [2021-06-05 06:51:25,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 06:51:25,745 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:25,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:25,783 INFO L225 Difference]: With dead ends: 20959 [2021-06-05 06:51:25,783 INFO L226 Difference]: Without dead ends: 20959 [2021-06-05 06:51:25,783 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 363.7ms TimeCoverageRelationStatistics Valid=524, Invalid=1638, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 06:51:25,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20959 states. [2021-06-05 06:51:26,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20959 to 12667. [2021-06-05 06:51:26,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12667 states, 12666 states have (on average 3.849281541133744) internal successors, (48755), 12666 states have internal predecessors, (48755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:26,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12667 states to 12667 states and 48755 transitions. [2021-06-05 06:51:26,132 INFO L78 Accepts]: Start accepts. Automaton has 12667 states and 48755 transitions. Word has length 28 [2021-06-05 06:51:26,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:26,132 INFO L482 AbstractCegarLoop]: Abstraction has 12667 states and 48755 transitions. [2021-06-05 06:51:26,132 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:26,132 INFO L276 IsEmpty]: Start isEmpty. Operand 12667 states and 48755 transitions. [2021-06-05 06:51:26,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:26,151 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:26,151 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:26,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 186 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4122 [2021-06-05 06:51:26,352 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:26,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:26,353 INFO L82 PathProgramCache]: Analyzing trace with hash -362417666, now seen corresponding path program 75 times [2021-06-05 06:51:26,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:26,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125460481] [2021-06-05 06:51:26,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:26,384 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:26,385 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:26,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125460481] [2021-06-05 06:51:26,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125460481] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:26,385 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419589096] [2021-06-05 06:51:26,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:26,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 06:51:26,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:26,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:26,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:26,482 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:26,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419589096] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:26,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:26,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 06:51:26,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150273395] [2021-06-05 06:51:26,483 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:51:26,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:26,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:51:26,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:51:26,483 INFO L87 Difference]: Start difference. First operand 12667 states and 48755 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:27,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:27,340 INFO L93 Difference]: Finished difference Result 22039 states and 80934 transitions. [2021-06-05 06:51:27,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 06:51:27,341 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:27,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:27,385 INFO L225 Difference]: With dead ends: 22039 [2021-06-05 06:51:27,386 INFO L226 Difference]: Without dead ends: 22035 [2021-06-05 06:51:27,386 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 486.5ms TimeCoverageRelationStatistics Valid=837, Invalid=2823, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 06:51:27,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22035 states. [2021-06-05 06:51:27,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22035 to 12921. [2021-06-05 06:51:27,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12921 states, 12920 states have (on average 3.8388544891640866) internal successors, (49598), 12920 states have internal predecessors, (49598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:27,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12921 states to 12921 states and 49598 transitions. [2021-06-05 06:51:27,752 INFO L78 Accepts]: Start accepts. Automaton has 12921 states and 49598 transitions. Word has length 28 [2021-06-05 06:51:27,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:27,752 INFO L482 AbstractCegarLoop]: Abstraction has 12921 states and 49598 transitions. [2021-06-05 06:51:27,752 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:27,752 INFO L276 IsEmpty]: Start isEmpty. Operand 12921 states and 49598 transitions. [2021-06-05 06:51:27,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:27,772 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:27,773 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:27,973 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 187 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4123 [2021-06-05 06:51:27,973 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:27,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:27,973 INFO L82 PathProgramCache]: Analyzing trace with hash 502966272, now seen corresponding path program 112 times [2021-06-05 06:51:27,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:27,974 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103226901] [2021-06-05 06:51:27,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:28,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:28,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103226901] [2021-06-05 06:51:28,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103226901] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:28,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374305088] [2021-06-05 06:51:28,002 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:28,032 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:51:28,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:28,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:51:28,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:28,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374305088] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:28,096 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:28,096 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:51:28,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612583830] [2021-06-05 06:51:28,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:51:28,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:28,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:51:28,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:51:28,096 INFO L87 Difference]: Start difference. First operand 12921 states and 49598 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:28,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:28,796 INFO L93 Difference]: Finished difference Result 18745 states and 68634 transitions. [2021-06-05 06:51:28,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 06:51:28,797 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:28,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:28,834 INFO L225 Difference]: With dead ends: 18745 [2021-06-05 06:51:28,834 INFO L226 Difference]: Without dead ends: 18722 [2021-06-05 06:51:28,835 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 374.5ms TimeCoverageRelationStatistics Valid=449, Invalid=1273, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 06:51:28,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18722 states. [2021-06-05 06:51:29,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18722 to 13216. [2021-06-05 06:51:29,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13216 states, 13215 states have (on average 3.855996973136587) internal successors, (50957), 13215 states have internal predecessors, (50957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:29,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13216 states to 13216 states and 50957 transitions. [2021-06-05 06:51:29,207 INFO L78 Accepts]: Start accepts. Automaton has 13216 states and 50957 transitions. Word has length 28 [2021-06-05 06:51:29,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:29,207 INFO L482 AbstractCegarLoop]: Abstraction has 13216 states and 50957 transitions. [2021-06-05 06:51:29,207 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:29,207 INFO L276 IsEmpty]: Start isEmpty. Operand 13216 states and 50957 transitions. [2021-06-05 06:51:29,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:29,227 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:29,227 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:29,427 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4124,188 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:29,428 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:29,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:29,428 INFO L82 PathProgramCache]: Analyzing trace with hash -179778058, now seen corresponding path program 113 times [2021-06-05 06:51:29,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:29,428 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402383932] [2021-06-05 06:51:29,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:29,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:29,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:29,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402383932] [2021-06-05 06:51:29,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402383932] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:29,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587913755] [2021-06-05 06:51:29,457 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:29,481 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:51:29,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:29,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:51:29,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:29,549 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:29,549 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587913755] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:29,549 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:29,549 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:51:29,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139782740] [2021-06-05 06:51:29,549 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:51:29,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:29,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:51:29,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:51:29,550 INFO L87 Difference]: Start difference. First operand 13216 states and 50957 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:30,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:30,252 INFO L93 Difference]: Finished difference Result 18738 states and 67728 transitions. [2021-06-05 06:51:30,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:51:30,253 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:30,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:30,287 INFO L225 Difference]: With dead ends: 18738 [2021-06-05 06:51:30,287 INFO L226 Difference]: Without dead ends: 18738 [2021-06-05 06:51:30,288 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 389.0ms TimeCoverageRelationStatistics Valid=608, Invalid=1744, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:51:30,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18738 states. [2021-06-05 06:51:30,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18738 to 13171. [2021-06-05 06:51:30,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13171 states, 13170 states have (on average 3.847835990888383) internal successors, (50676), 13170 states have internal predecessors, (50676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:30,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13171 states to 13171 states and 50676 transitions. [2021-06-05 06:51:30,559 INFO L78 Accepts]: Start accepts. Automaton has 13171 states and 50676 transitions. Word has length 28 [2021-06-05 06:51:30,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:30,559 INFO L482 AbstractCegarLoop]: Abstraction has 13171 states and 50676 transitions. [2021-06-05 06:51:30,559 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:30,559 INFO L276 IsEmpty]: Start isEmpty. Operand 13171 states and 50676 transitions. [2021-06-05 06:51:30,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:30,578 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:30,578 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:30,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4125,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:30,793 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:30,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:30,793 INFO L82 PathProgramCache]: Analyzing trace with hash -499896522, now seen corresponding path program 114 times [2021-06-05 06:51:30,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:30,793 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030603112] [2021-06-05 06:51:30,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:30,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:30,822 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:30,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030603112] [2021-06-05 06:51:30,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030603112] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:30,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693327072] [2021-06-05 06:51:30,822 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:30,845 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 06:51:30,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:30,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:51:30,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:30,911 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:30,911 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693327072] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:30,911 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:30,911 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:51:30,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593343277] [2021-06-05 06:51:30,911 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:51:30,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:30,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:51:30,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:51:30,911 INFO L87 Difference]: Start difference. First operand 13171 states and 50676 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:31,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:31,529 INFO L93 Difference]: Finished difference Result 20089 states and 73010 transitions. [2021-06-05 06:51:31,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:51:31,529 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:31,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:31,566 INFO L225 Difference]: With dead ends: 20089 [2021-06-05 06:51:31,567 INFO L226 Difference]: Without dead ends: 20089 [2021-06-05 06:51:31,567 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 331.4ms TimeCoverageRelationStatistics Valid=505, Invalid=1301, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:51:31,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20089 states. [2021-06-05 06:51:31,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20089 to 13878. [2021-06-05 06:51:31,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13878 states, 13877 states have (on average 3.834186063270159) internal successors, (53207), 13877 states have internal predecessors, (53207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:31,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13878 states to 13878 states and 53207 transitions. [2021-06-05 06:51:31,921 INFO L78 Accepts]: Start accepts. Automaton has 13878 states and 53207 transitions. Word has length 28 [2021-06-05 06:51:31,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:31,921 INFO L482 AbstractCegarLoop]: Abstraction has 13878 states and 53207 transitions. [2021-06-05 06:51:31,921 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:31,921 INFO L276 IsEmpty]: Start isEmpty. Operand 13878 states and 53207 transitions. [2021-06-05 06:51:31,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:31,941 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:31,941 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:32,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4126 [2021-06-05 06:51:32,149 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:32,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:32,149 INFO L82 PathProgramCache]: Analyzing trace with hash 389506442, now seen corresponding path program 115 times [2021-06-05 06:51:32,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:32,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372791771] [2021-06-05 06:51:32,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:32,178 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:32,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:32,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372791771] [2021-06-05 06:51:32,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372791771] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:32,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953672623] [2021-06-05 06:51:32,178 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:32,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:51:32,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:32,271 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:32,271 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953672623] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:32,271 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:32,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:51:32,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118667417] [2021-06-05 06:51:32,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:51:32,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:32,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:51:32,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:51:32,272 INFO L87 Difference]: Start difference. First operand 13878 states and 53207 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:33,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:33,051 INFO L93 Difference]: Finished difference Result 22502 states and 80640 transitions. [2021-06-05 06:51:33,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:51:33,051 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:33,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:33,092 INFO L225 Difference]: With dead ends: 22502 [2021-06-05 06:51:33,092 INFO L226 Difference]: Without dead ends: 22502 [2021-06-05 06:51:33,093 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 429.9ms TimeCoverageRelationStatistics Valid=698, Invalid=1752, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:51:33,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22502 states. [2021-06-05 06:51:33,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22502 to 14104. [2021-06-05 06:51:33,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14104 states, 14103 states have (on average 3.8464156562433525) internal successors, (54246), 14103 states have internal predecessors, (54246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:33,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14104 states to 14104 states and 54246 transitions. [2021-06-05 06:51:33,412 INFO L78 Accepts]: Start accepts. Automaton has 14104 states and 54246 transitions. Word has length 28 [2021-06-05 06:51:33,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:33,412 INFO L482 AbstractCegarLoop]: Abstraction has 14104 states and 54246 transitions. [2021-06-05 06:51:33,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:33,412 INFO L276 IsEmpty]: Start isEmpty. Operand 14104 states and 54246 transitions. [2021-06-05 06:51:33,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:33,433 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:33,433 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:33,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4127,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:33,633 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:33,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:33,634 INFO L82 PathProgramCache]: Analyzing trace with hash -933026596, now seen corresponding path program 76 times [2021-06-05 06:51:33,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:33,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64597175] [2021-06-05 06:51:33,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:33,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:33,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64597175] [2021-06-05 06:51:33,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64597175] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:33,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983547349] [2021-06-05 06:51:33,666 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:33,689 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:51:33,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:33,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:33,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:33,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983547349] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:33,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:33,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:51:33,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341660370] [2021-06-05 06:51:33,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:51:33,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:33,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:51:33,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:51:33,783 INFO L87 Difference]: Start difference. First operand 14104 states and 54246 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:35,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:35,320 INFO L93 Difference]: Finished difference Result 39134 states and 140671 transitions. [2021-06-05 06:51:35,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-05 06:51:35,321 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:35,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:35,417 INFO L225 Difference]: With dead ends: 39134 [2021-06-05 06:51:35,418 INFO L226 Difference]: Without dead ends: 39134 [2021-06-05 06:51:35,418 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2606 ImplicationChecksByTransitivity, 885.5ms TimeCoverageRelationStatistics Valid=1532, Invalid=5608, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 06:51:35,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39134 states. [2021-06-05 06:51:36,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39134 to 15340. [2021-06-05 06:51:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15340 states, 15339 states have (on average 3.892887411174131) internal successors, (59713), 15339 states have internal predecessors, (59713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:36,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15340 states to 15340 states and 59713 transitions. [2021-06-05 06:51:36,060 INFO L78 Accepts]: Start accepts. Automaton has 15340 states and 59713 transitions. Word has length 28 [2021-06-05 06:51:36,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:36,060 INFO L482 AbstractCegarLoop]: Abstraction has 15340 states and 59713 transitions. [2021-06-05 06:51:36,060 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:36,060 INFO L276 IsEmpty]: Start isEmpty. Operand 15340 states and 59713 transitions. [2021-06-05 06:51:36,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:36,085 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:36,085 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:36,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4128,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:36,286 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:36,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:36,286 INFO L82 PathProgramCache]: Analyzing trace with hash -366074516, now seen corresponding path program 77 times [2021-06-05 06:51:36,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:36,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589098457] [2021-06-05 06:51:36,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:36,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:36,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589098457] [2021-06-05 06:51:36,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589098457] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:36,318 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035085686] [2021-06-05 06:51:36,318 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:36,348 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:51:36,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:36,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:36,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:36,442 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:36,443 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035085686] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:36,443 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:36,443 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:51:36,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118101907] [2021-06-05 06:51:36,443 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:51:36,443 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:36,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:51:36,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:51:36,443 INFO L87 Difference]: Start difference. First operand 15340 states and 59713 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:37,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:37,922 INFO L93 Difference]: Finished difference Result 38160 states and 138109 transitions. [2021-06-05 06:51:37,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-05 06:51:37,922 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:37,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:38,006 INFO L225 Difference]: With dead ends: 38160 [2021-06-05 06:51:38,006 INFO L226 Difference]: Without dead ends: 38160 [2021-06-05 06:51:38,007 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2605 ImplicationChecksByTransitivity, 873.8ms TimeCoverageRelationStatistics Valid=1532, Invalid=5608, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 06:51:38,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38160 states. [2021-06-05 06:51:38,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38160 to 15314. [2021-06-05 06:51:38,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15314 states, 15313 states have (on average 3.88930973682492) internal successors, (59557), 15313 states have internal predecessors, (59557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15314 states to 15314 states and 59557 transitions. [2021-06-05 06:51:38,629 INFO L78 Accepts]: Start accepts. Automaton has 15314 states and 59557 transitions. Word has length 28 [2021-06-05 06:51:38,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:38,629 INFO L482 AbstractCegarLoop]: Abstraction has 15314 states and 59557 transitions. [2021-06-05 06:51:38,629 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:38,629 INFO L276 IsEmpty]: Start isEmpty. Operand 15314 states and 59557 transitions. [2021-06-05 06:51:38,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:38,652 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:38,652 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:38,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4129 [2021-06-05 06:51:38,852 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:38,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:38,852 INFO L82 PathProgramCache]: Analyzing trace with hash -648300864, now seen corresponding path program 116 times [2021-06-05 06:51:38,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:38,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017355509] [2021-06-05 06:51:38,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:38,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:38,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017355509] [2021-06-05 06:51:38,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017355509] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:38,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873497224] [2021-06-05 06:51:38,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:38,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:51:38,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:38,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:51:38,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:38,956 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:38,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873497224] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:38,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:38,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:51:38,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752722018] [2021-06-05 06:51:38,956 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:51:38,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:38,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:51:38,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:51:38,957 INFO L87 Difference]: Start difference. First operand 15314 states and 59557 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:39,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:39,216 INFO L93 Difference]: Finished difference Result 23675 states and 90680 transitions. [2021-06-05 06:51:39,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 06:51:39,217 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:39,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:39,268 INFO L225 Difference]: With dead ends: 23675 [2021-06-05 06:51:39,268 INFO L226 Difference]: Without dead ends: 23628 [2021-06-05 06:51:39,268 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 96.4ms TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-06-05 06:51:39,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23628 states. [2021-06-05 06:51:39,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23628 to 20433. [2021-06-05 06:51:39,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20433 states, 20432 states have (on average 3.903680501174628) internal successors, (79760), 20432 states have internal predecessors, (79760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:39,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20433 states to 20433 states and 79760 transitions. [2021-06-05 06:51:39,662 INFO L78 Accepts]: Start accepts. Automaton has 20433 states and 79760 transitions. Word has length 28 [2021-06-05 06:51:39,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:39,662 INFO L482 AbstractCegarLoop]: Abstraction has 20433 states and 79760 transitions. [2021-06-05 06:51:39,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 20433 states and 79760 transitions. [2021-06-05 06:51:39,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:39,694 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:39,694 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:39,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4130,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:39,894 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:39,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:39,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1261765878, now seen corresponding path program 117 times [2021-06-05 06:51:39,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:39,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079415501] [2021-06-05 06:51:39,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:39,921 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:39,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:39,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079415501] [2021-06-05 06:51:39,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079415501] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:39,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643848184] [2021-06-05 06:51:39,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:39,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:51:39,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:39,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:51:39,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:39,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:39,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643848184] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:39,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:39,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:51:39,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158728670] [2021-06-05 06:51:39,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:51:39,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:39,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:51:39,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:51:39,998 INFO L87 Difference]: Start difference. First operand 20433 states and 79760 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:40,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:40,217 INFO L93 Difference]: Finished difference Result 23187 states and 88130 transitions. [2021-06-05 06:51:40,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:51:40,218 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:40,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:40,265 INFO L225 Difference]: With dead ends: 23187 [2021-06-05 06:51:40,265 INFO L226 Difference]: Without dead ends: 23187 [2021-06-05 06:51:40,265 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 87.8ms TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:51:40,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23187 states. [2021-06-05 06:51:40,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23187 to 19936. [2021-06-05 06:51:40,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19936 states, 19935 states have (on average 3.89204915976925) internal successors, (77588), 19935 states have internal predecessors, (77588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:40,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19936 states to 19936 states and 77588 transitions. [2021-06-05 06:51:40,653 INFO L78 Accepts]: Start accepts. Automaton has 19936 states and 77588 transitions. Word has length 28 [2021-06-05 06:51:40,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:40,653 INFO L482 AbstractCegarLoop]: Abstraction has 19936 states and 77588 transitions. [2021-06-05 06:51:40,654 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:40,654 INFO L276 IsEmpty]: Start isEmpty. Operand 19936 states and 77588 transitions. [2021-06-05 06:51:40,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:40,682 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:40,682 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:40,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4131 [2021-06-05 06:51:40,882 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:40,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:40,882 INFO L82 PathProgramCache]: Analyzing trace with hash 310084440, now seen corresponding path program 118 times [2021-06-05 06:51:40,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:40,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364845418] [2021-06-05 06:51:40,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:40,934 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:40,934 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:40,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364845418] [2021-06-05 06:51:40,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364845418] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:40,934 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596537208] [2021-06-05 06:51:40,934 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:40,971 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:51:40,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:40,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:40,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:41,048 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:41,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596537208] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:41,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:41,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-06-05 06:51:41,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897654079] [2021-06-05 06:51:41,048 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:51:41,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:41,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:51:41,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:51:41,049 INFO L87 Difference]: Start difference. First operand 19936 states and 77588 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:41,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:41,963 INFO L93 Difference]: Finished difference Result 31776 states and 117695 transitions. [2021-06-05 06:51:41,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:51:41,963 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:41,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:42,035 INFO L225 Difference]: With dead ends: 31776 [2021-06-05 06:51:42,035 INFO L226 Difference]: Without dead ends: 31776 [2021-06-05 06:51:42,035 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 460.0ms TimeCoverageRelationStatistics Valid=720, Invalid=2472, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 06:51:42,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31776 states. [2021-06-05 06:51:42,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31776 to 20002. [2021-06-05 06:51:42,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20002 states, 20001 states have (on average 3.8901054947252636) internal successors, (77806), 20001 states have internal predecessors, (77806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:42,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20002 states to 20002 states and 77806 transitions. [2021-06-05 06:51:42,498 INFO L78 Accepts]: Start accepts. Automaton has 20002 states and 77806 transitions. Word has length 28 [2021-06-05 06:51:42,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:42,499 INFO L482 AbstractCegarLoop]: Abstraction has 20002 states and 77806 transitions. [2021-06-05 06:51:42,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:42,499 INFO L276 IsEmpty]: Start isEmpty. Operand 20002 states and 77806 transitions. [2021-06-05 06:51:42,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:42,529 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:42,529 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:42,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4132 [2021-06-05 06:51:42,729 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:42,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:42,729 INFO L82 PathProgramCache]: Analyzing trace with hash -666234404, now seen corresponding path program 119 times [2021-06-05 06:51:42,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:42,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532456849] [2021-06-05 06:51:42,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:42,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:42,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532456849] [2021-06-05 06:51:42,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532456849] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:42,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000394141] [2021-06-05 06:51:42,764 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:42,788 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:51:42,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:42,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:42,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:42,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000394141] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:42,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:42,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 06:51:42,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269248850] [2021-06-05 06:51:42,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:51:42,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:42,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:51:42,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:51:42,874 INFO L87 Difference]: Start difference. First operand 20002 states and 77806 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:44,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:44,252 INFO L93 Difference]: Finished difference Result 40610 states and 148783 transitions. [2021-06-05 06:51:44,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-05 06:51:44,252 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:44,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:44,344 INFO L225 Difference]: With dead ends: 40610 [2021-06-05 06:51:44,344 INFO L226 Difference]: Without dead ends: 40610 [2021-06-05 06:51:44,345 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3102 ImplicationChecksByTransitivity, 809.7ms TimeCoverageRelationStatistics Valid=1548, Invalid=6284, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 06:51:44,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40610 states. [2021-06-05 06:51:44,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40610 to 20007. [2021-06-05 06:51:44,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20007 states, 20006 states have (on average 3.892182345296411) internal successors, (77867), 20006 states have internal predecessors, (77867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20007 states to 20007 states and 77867 transitions. [2021-06-05 06:51:45,012 INFO L78 Accepts]: Start accepts. Automaton has 20007 states and 77867 transitions. Word has length 28 [2021-06-05 06:51:45,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:45,012 INFO L482 AbstractCegarLoop]: Abstraction has 20007 states and 77867 transitions. [2021-06-05 06:51:45,012 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:45,012 INFO L276 IsEmpty]: Start isEmpty. Operand 20007 states and 77867 transitions. [2021-06-05 06:51:45,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:45,042 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:45,042 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:45,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4133 [2021-06-05 06:51:45,242 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:45,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:45,242 INFO L82 PathProgramCache]: Analyzing trace with hash -99282324, now seen corresponding path program 120 times [2021-06-05 06:51:45,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:45,243 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444731676] [2021-06-05 06:51:45,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:45,276 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:45,277 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:45,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444731676] [2021-06-05 06:51:45,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444731676] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:45,277 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906363390] [2021-06-05 06:51:45,277 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:45,303 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:51:45,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:45,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:45,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:45,383 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906363390] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:45,383 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:45,383 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 06:51:45,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797622368] [2021-06-05 06:51:45,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:51:45,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:45,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:51:45,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:51:45,384 INFO L87 Difference]: Start difference. First operand 20007 states and 77867 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:46,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:46,724 INFO L93 Difference]: Finished difference Result 40173 states and 147928 transitions. [2021-06-05 06:51:46,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-05 06:51:46,724 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:46,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:46,826 INFO L225 Difference]: With dead ends: 40173 [2021-06-05 06:51:46,826 INFO L226 Difference]: Without dead ends: 40173 [2021-06-05 06:51:46,827 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2992 ImplicationChecksByTransitivity, 791.1ms TimeCoverageRelationStatistics Valid=1515, Invalid=6141, Unknown=0, NotChecked=0, Total=7656 [2021-06-05 06:51:46,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40173 states. [2021-06-05 06:51:47,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40173 to 19795. [2021-06-05 06:51:47,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19795 states, 19794 states have (on average 3.884308376275639) internal successors, (76886), 19794 states have internal predecessors, (76886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:47,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19795 states to 19795 states and 76886 transitions. [2021-06-05 06:51:47,412 INFO L78 Accepts]: Start accepts. Automaton has 19795 states and 76886 transitions. Word has length 28 [2021-06-05 06:51:47,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:47,412 INFO L482 AbstractCegarLoop]: Abstraction has 19795 states and 76886 transitions. [2021-06-05 06:51:47,412 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:47,412 INFO L276 IsEmpty]: Start isEmpty. Operand 19795 states and 76886 transitions. [2021-06-05 06:51:47,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:47,441 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:47,441 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:47,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4134 [2021-06-05 06:51:47,641 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:47,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:47,641 INFO L82 PathProgramCache]: Analyzing trace with hash 836856348, now seen corresponding path program 121 times [2021-06-05 06:51:47,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:47,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37089456] [2021-06-05 06:51:47,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:47,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:47,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:47,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:47,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37089456] [2021-06-05 06:51:47,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37089456] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:47,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113568164] [2021-06-05 06:51:47,668 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:47,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:51:47,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:47,743 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 06:51:47,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113568164] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:47,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:47,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-06-05 06:51:47,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976925716] [2021-06-05 06:51:47,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:51:47,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:47,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:51:47,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:51:47,744 INFO L87 Difference]: Start difference. First operand 19795 states and 76886 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:48,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:48,002 INFO L93 Difference]: Finished difference Result 29286 states and 109348 transitions. [2021-06-05 06:51:48,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:51:48,002 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:48,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:48,066 INFO L225 Difference]: With dead ends: 29286 [2021-06-05 06:51:48,066 INFO L226 Difference]: Without dead ends: 29269 [2021-06-05 06:51:48,067 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 95.6ms TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:51:48,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29269 states. [2021-06-05 06:51:48,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29269 to 20063. [2021-06-05 06:51:48,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20063 states, 20062 states have (on average 3.8898414913767323) internal successors, (78038), 20062 states have internal predecessors, (78038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20063 states to 20063 states and 78038 transitions. [2021-06-05 06:51:48,561 INFO L78 Accepts]: Start accepts. Automaton has 20063 states and 78038 transitions. Word has length 28 [2021-06-05 06:51:48,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:48,562 INFO L482 AbstractCegarLoop]: Abstraction has 20063 states and 78038 transitions. [2021-06-05 06:51:48,562 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:48,562 INFO L276 IsEmpty]: Start isEmpty. Operand 20063 states and 78038 transitions. [2021-06-05 06:51:48,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:48,591 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:48,591 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:48,792 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4135,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:48,792 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:48,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:48,792 INFO L82 PathProgramCache]: Analyzing trace with hash -306069692, now seen corresponding path program 122 times [2021-06-05 06:51:48,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:48,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065890948] [2021-06-05 06:51:48,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:48,823 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:48,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065890948] [2021-06-05 06:51:48,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065890948] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:48,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200317256] [2021-06-05 06:51:48,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:48,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:51:48,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:48,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:51:48,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 06:51:48,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200317256] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:48,902 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:48,902 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-06-05 06:51:48,902 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227569454] [2021-06-05 06:51:48,902 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:51:48,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:48,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:51:48,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:51:48,902 INFO L87 Difference]: Start difference. First operand 20063 states and 78038 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:49,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:49,168 INFO L93 Difference]: Finished difference Result 31067 states and 114897 transitions. [2021-06-05 06:51:49,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:51:49,168 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:49,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:49,237 INFO L225 Difference]: With dead ends: 31067 [2021-06-05 06:51:49,237 INFO L226 Difference]: Without dead ends: 31067 [2021-06-05 06:51:49,237 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 109.5ms TimeCoverageRelationStatistics Valid=135, Invalid=245, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:51:49,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31067 states. [2021-06-05 06:51:49,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31067 to 19732. [2021-06-05 06:51:49,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19732 states, 19731 states have (on average 3.874714915615022) internal successors, (76452), 19731 states have internal predecessors, (76452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:49,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19732 states to 19732 states and 76452 transitions. [2021-06-05 06:51:49,689 INFO L78 Accepts]: Start accepts. Automaton has 19732 states and 76452 transitions. Word has length 28 [2021-06-05 06:51:49,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:49,689 INFO L482 AbstractCegarLoop]: Abstraction has 19732 states and 76452 transitions. [2021-06-05 06:51:49,690 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:49,690 INFO L276 IsEmpty]: Start isEmpty. Operand 19732 states and 76452 transitions. [2021-06-05 06:51:49,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:49,718 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:49,718 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:49,918 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4136,200 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:49,918 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:49,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:49,918 INFO L82 PathProgramCache]: Analyzing trace with hash -1652751258, now seen corresponding path program 123 times [2021-06-05 06:51:49,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:49,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036806512] [2021-06-05 06:51:49,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:49,952 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:49,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:49,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036806512] [2021-06-05 06:51:49,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036806512] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:49,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120268604] [2021-06-05 06:51:49,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:49,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:51:49,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:49,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:49,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:50,052 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:50,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120268604] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:50,052 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:50,052 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:51:50,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286044806] [2021-06-05 06:51:50,052 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:51:50,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:50,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:51:50,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:51:50,052 INFO L87 Difference]: Start difference. First operand 19732 states and 76452 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:50,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:50,763 INFO L93 Difference]: Finished difference Result 29306 states and 108910 transitions. [2021-06-05 06:51:50,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 06:51:50,764 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:50,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:50,830 INFO L225 Difference]: With dead ends: 29306 [2021-06-05 06:51:50,830 INFO L226 Difference]: Without dead ends: 29306 [2021-06-05 06:51:50,831 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 379.8ms TimeCoverageRelationStatistics Valid=589, Invalid=1961, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:51:50,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29306 states. [2021-06-05 06:51:51,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29306 to 19780. [2021-06-05 06:51:51,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19780 states, 19779 states have (on average 3.8734010819556093) internal successors, (76612), 19779 states have internal predecessors, (76612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:51,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19780 states to 19780 states and 76612 transitions. [2021-06-05 06:51:51,348 INFO L78 Accepts]: Start accepts. Automaton has 19780 states and 76612 transitions. Word has length 28 [2021-06-05 06:51:51,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:51,348 INFO L482 AbstractCegarLoop]: Abstraction has 19780 states and 76612 transitions. [2021-06-05 06:51:51,348 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:51,348 INFO L276 IsEmpty]: Start isEmpty. Operand 19780 states and 76612 transitions. [2021-06-05 06:51:51,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:51,377 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:51,377 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:51,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4137,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:51,577 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:51,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:51,578 INFO L82 PathProgramCache]: Analyzing trace with hash -867837164, now seen corresponding path program 124 times [2021-06-05 06:51:51,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:51,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199586368] [2021-06-05 06:51:51,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:51,611 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:51,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:51,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199586368] [2021-06-05 06:51:51,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199586368] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:51,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944090784] [2021-06-05 06:51:51,612 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:51,634 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:51:51,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:51,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:51,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:51,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944090784] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:51,705 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:51,705 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:51:51,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642043142] [2021-06-05 06:51:51,705 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:51:51,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:51,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:51:51,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:51:51,705 INFO L87 Difference]: Start difference. First operand 19780 states and 76612 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:52,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:52,680 INFO L93 Difference]: Finished difference Result 30838 states and 113300 transitions. [2021-06-05 06:51:52,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 06:51:52,681 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:52,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:52,763 INFO L225 Difference]: With dead ends: 30838 [2021-06-05 06:51:52,763 INFO L226 Difference]: Without dead ends: 30838 [2021-06-05 06:51:52,763 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 518.2ms TimeCoverageRelationStatistics Valid=928, Invalid=3494, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:51:52,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30838 states. [2021-06-05 06:51:53,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30838 to 20326. [2021-06-05 06:51:53,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20326 states, 20325 states have (on average 3.8521525215252153) internal successors, (78295), 20325 states have internal predecessors, (78295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:53,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20326 states to 20326 states and 78295 transitions. [2021-06-05 06:51:53,279 INFO L78 Accepts]: Start accepts. Automaton has 20326 states and 78295 transitions. Word has length 28 [2021-06-05 06:51:53,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:53,279 INFO L482 AbstractCegarLoop]: Abstraction has 20326 states and 78295 transitions. [2021-06-05 06:51:53,279 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:53,279 INFO L276 IsEmpty]: Start isEmpty. Operand 20326 states and 78295 transitions. [2021-06-05 06:51:53,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:53,308 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:53,308 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:53,515 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4138,202 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:53,515 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:53,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:53,515 INFO L82 PathProgramCache]: Analyzing trace with hash -912658306, now seen corresponding path program 125 times [2021-06-05 06:51:53,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:53,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294015862] [2021-06-05 06:51:53,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:53,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:53,547 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:53,548 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:53,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294015862] [2021-06-05 06:51:53,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294015862] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:53,548 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510974450] [2021-06-05 06:51:53,548 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:53,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:51:53,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:53,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:53,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:53,635 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:53,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510974450] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:53,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:53,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:51:53,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702567014] [2021-06-05 06:51:53,636 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:51:53,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:53,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:51:53,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:51:53,636 INFO L87 Difference]: Start difference. First operand 20326 states and 78295 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:54,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:54,537 INFO L93 Difference]: Finished difference Result 29955 states and 110977 transitions. [2021-06-05 06:51:54,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 06:51:54,538 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:54,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:54,612 INFO L225 Difference]: With dead ends: 29955 [2021-06-05 06:51:54,612 INFO L226 Difference]: Without dead ends: 29951 [2021-06-05 06:51:54,612 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1121 ImplicationChecksByTransitivity, 415.9ms TimeCoverageRelationStatistics Valid=736, Invalid=2570, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 06:51:54,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29951 states. [2021-06-05 06:51:55,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29951 to 20218. [2021-06-05 06:51:55,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20218 states, 20217 states have (on average 3.854825147153386) internal successors, (77933), 20217 states have internal predecessors, (77933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:55,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20218 states to 20218 states and 77933 transitions. [2021-06-05 06:51:55,211 INFO L78 Accepts]: Start accepts. Automaton has 20218 states and 77933 transitions. Word has length 28 [2021-06-05 06:51:55,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:55,211 INFO L482 AbstractCegarLoop]: Abstraction has 20218 states and 77933 transitions. [2021-06-05 06:51:55,211 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:55,211 INFO L276 IsEmpty]: Start isEmpty. Operand 20218 states and 77933 transitions. [2021-06-05 06:51:55,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:55,240 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:55,240 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:55,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4139,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:55,440 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:55,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:55,441 INFO L82 PathProgramCache]: Analyzing trace with hash -47274368, now seen corresponding path program 126 times [2021-06-05 06:51:55,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:55,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332195778] [2021-06-05 06:51:55,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:55,466 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:55,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:55,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332195778] [2021-06-05 06:51:55,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332195778] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:55,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370061532] [2021-06-05 06:51:55,467 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:55,490 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:51:55,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:55,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:51:55,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:55,538 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-05 06:51:55,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370061532] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:55,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:55,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-06-05 06:51:55,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575596057] [2021-06-05 06:51:55,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:51:55,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:55,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:51:55,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:51:55,539 INFO L87 Difference]: Start difference. First operand 20218 states and 77933 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:55,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:55,755 INFO L93 Difference]: Finished difference Result 25214 states and 93817 transitions. [2021-06-05 06:51:55,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 06:51:55,755 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:55,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:55,810 INFO L225 Difference]: With dead ends: 25214 [2021-06-05 06:51:55,810 INFO L226 Difference]: Without dead ends: 25214 [2021-06-05 06:51:55,810 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 88.7ms TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:51:55,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25214 states. [2021-06-05 06:51:56,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25214 to 20528. [2021-06-05 06:51:56,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20528 states, 20527 states have (on average 3.8459589808544843) internal successors, (78946), 20527 states have internal predecessors, (78946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:56,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20528 states to 20528 states and 78946 transitions. [2021-06-05 06:51:56,202 INFO L78 Accepts]: Start accepts. Automaton has 20528 states and 78946 transitions. Word has length 28 [2021-06-05 06:51:56,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:56,202 INFO L482 AbstractCegarLoop]: Abstraction has 20528 states and 78946 transitions. [2021-06-05 06:51:56,202 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:56,202 INFO L276 IsEmpty]: Start isEmpty. Operand 20528 states and 78946 transitions. [2021-06-05 06:51:56,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:56,233 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:56,233 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:56,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4140 [2021-06-05 06:51:56,433 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:56,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:56,434 INFO L82 PathProgramCache]: Analyzing trace with hash 882925376, now seen corresponding path program 127 times [2021-06-05 06:51:56,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:56,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403469425] [2021-06-05 06:51:56,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:56,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:56,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403469425] [2021-06-05 06:51:56,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403469425] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:56,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486812466] [2021-06-05 06:51:56,470 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:56,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:56,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:56,548 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 06:51:56,548 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486812466] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:56,548 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:56,548 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 06:51:56,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497876238] [2021-06-05 06:51:56,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:51:56,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:56,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:51:56,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:51:56,549 INFO L87 Difference]: Start difference. First operand 20528 states and 78946 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:57,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:57,380 INFO L93 Difference]: Finished difference Result 30964 states and 113417 transitions. [2021-06-05 06:51:57,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:51:57,380 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:57,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:57,451 INFO L225 Difference]: With dead ends: 30964 [2021-06-05 06:51:57,451 INFO L226 Difference]: Without dead ends: 30964 [2021-06-05 06:51:57,451 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 446.4ms TimeCoverageRelationStatistics Valid=684, Invalid=2396, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 06:51:57,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30964 states. [2021-06-05 06:51:57,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30964 to 22146. [2021-06-05 06:51:58,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22146 states, 22145 states have (on average 3.8581169564235718) internal successors, (85438), 22145 states have internal predecessors, (85438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:58,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22146 states to 22146 states and 85438 transitions. [2021-06-05 06:51:58,070 INFO L78 Accepts]: Start accepts. Automaton has 22146 states and 85438 transitions. Word has length 28 [2021-06-05 06:51:58,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:58,070 INFO L482 AbstractCegarLoop]: Abstraction has 22146 states and 85438 transitions. [2021-06-05 06:51:58,070 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:58,070 INFO L276 IsEmpty]: Start isEmpty. Operand 22146 states and 85438 transitions. [2021-06-05 06:51:58,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:58,102 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:58,102 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:58,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4141,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:58,302 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:58,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:58,302 INFO L82 PathProgramCache]: Analyzing trace with hash -956846952, now seen corresponding path program 128 times [2021-06-05 06:51:58,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:58,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515500750] [2021-06-05 06:51:58,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:58,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:58,336 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:51:58,336 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:58,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515500750] [2021-06-05 06:51:58,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515500750] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:58,336 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554901085] [2021-06-05 06:51:58,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:58,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:51:58,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:58,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:51:58,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:51:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-05 06:51:58,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554901085] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:58,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:51:58,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 06:51:58,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390530838] [2021-06-05 06:51:58,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:51:58,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:51:58,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:51:58,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:51:58,423 INFO L87 Difference]: Start difference. First operand 22146 states and 85438 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:59,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:51:59,080 INFO L93 Difference]: Finished difference Result 29203 states and 108883 transitions. [2021-06-05 06:51:59,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:51:59,080 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:51:59,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:51:59,154 INFO L225 Difference]: With dead ends: 29203 [2021-06-05 06:51:59,154 INFO L226 Difference]: Without dead ends: 29191 [2021-06-05 06:51:59,155 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 338.8ms TimeCoverageRelationStatistics Valid=503, Invalid=1849, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:51:59,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29191 states. [2021-06-05 06:51:59,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29191 to 22298. [2021-06-05 06:51:59,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22298 states, 22297 states have (on average 3.8527156119657353) internal successors, (85904), 22297 states have internal predecessors, (85904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22298 states to 22298 states and 85904 transitions. [2021-06-05 06:51:59,689 INFO L78 Accepts]: Start accepts. Automaton has 22298 states and 85904 transitions. Word has length 28 [2021-06-05 06:51:59,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:51:59,689 INFO L482 AbstractCegarLoop]: Abstraction has 22298 states and 85904 transitions. [2021-06-05 06:51:59,689 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:51:59,689 INFO L276 IsEmpty]: Start isEmpty. Operand 22298 states and 85904 transitions. [2021-06-05 06:51:59,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:51:59,723 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:51:59,723 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:51:59,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4142 [2021-06-05 06:51:59,924 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:51:59,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:51:59,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1587630268, now seen corresponding path program 129 times [2021-06-05 06:51:59,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:51:59,924 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305487411] [2021-06-05 06:51:59,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:51:59,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:51:59,951 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:51:59,951 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:51:59,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305487411] [2021-06-05 06:51:59,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305487411] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:51:59,951 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8822135] [2021-06-05 06:51:59,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:51:59,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:51:59,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:51:59,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:51:59,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:00,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:52:00,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8822135] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:00,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:00,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 06:52:00,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687696051] [2021-06-05 06:52:00,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:52:00,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:00,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:52:00,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:52:00,024 INFO L87 Difference]: Start difference. First operand 22298 states and 85904 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:00,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:00,254 INFO L93 Difference]: Finished difference Result 25557 states and 96861 transitions. [2021-06-05 06:52:00,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 06:52:00,255 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:00,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:00,308 INFO L225 Difference]: With dead ends: 25557 [2021-06-05 06:52:00,308 INFO L226 Difference]: Without dead ends: 25557 [2021-06-05 06:52:00,309 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 92.1ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:52:00,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25557 states. [2021-06-05 06:52:00,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25557 to 23101. [2021-06-05 06:52:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23101 states, 23100 states have (on average 3.847748917748918) internal successors, (88883), 23100 states have internal predecessors, (88883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23101 states to 23101 states and 88883 transitions. [2021-06-05 06:52:00,745 INFO L78 Accepts]: Start accepts. Automaton has 23101 states and 88883 transitions. Word has length 28 [2021-06-05 06:52:00,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:00,745 INFO L482 AbstractCegarLoop]: Abstraction has 23101 states and 88883 transitions. [2021-06-05 06:52:00,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:00,745 INFO L276 IsEmpty]: Start isEmpty. Operand 23101 states and 88883 transitions. [2021-06-05 06:52:00,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:00,780 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:00,780 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:00,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4143 [2021-06-05 06:52:00,981 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:00,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:00,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1143968700, now seen corresponding path program 130 times [2021-06-05 06:52:00,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:00,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84156409] [2021-06-05 06:52:00,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:00,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:01,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:01,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84156409] [2021-06-05 06:52:01,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84156409] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:01,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669659498] [2021-06-05 06:52:01,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:01,040 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:52:01,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:01,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:01,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:01,100 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:01,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669659498] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:01,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:01,101 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 06:52:01,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526688737] [2021-06-05 06:52:01,101 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:52:01,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:01,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:52:01,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:52:01,101 INFO L87 Difference]: Start difference. First operand 23101 states and 88883 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:01,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:01,902 INFO L93 Difference]: Finished difference Result 30944 states and 114247 transitions. [2021-06-05 06:52:01,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 06:52:01,902 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:01,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:01,971 INFO L225 Difference]: With dead ends: 30944 [2021-06-05 06:52:01,971 INFO L226 Difference]: Without dead ends: 30944 [2021-06-05 06:52:01,971 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 463.6ms TimeCoverageRelationStatistics Valid=627, Invalid=2235, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 06:52:02,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30944 states. [2021-06-05 06:52:02,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30944 to 24307. [2021-06-05 06:52:02,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24307 states, 24306 states have (on average 3.8156010861515677) internal successors, (92742), 24306 states have internal predecessors, (92742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:02,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24307 states to 24307 states and 92742 transitions. [2021-06-05 06:52:02,529 INFO L78 Accepts]: Start accepts. Automaton has 24307 states and 92742 transitions. Word has length 28 [2021-06-05 06:52:02,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:02,529 INFO L482 AbstractCegarLoop]: Abstraction has 24307 states and 92742 transitions. [2021-06-05 06:52:02,529 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:02,529 INFO L276 IsEmpty]: Start isEmpty. Operand 24307 states and 92742 transitions. [2021-06-05 06:52:02,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:02,566 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:02,566 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:02,767 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 208 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4144 [2021-06-05 06:52:02,767 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:02,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:02,767 INFO L82 PathProgramCache]: Analyzing trace with hash -403875748, now seen corresponding path program 131 times [2021-06-05 06:52:02,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:02,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199501545] [2021-06-05 06:52:02,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:02,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:02,797 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:02,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:02,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199501545] [2021-06-05 06:52:02,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199501545] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:02,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524625595] [2021-06-05 06:52:02,797 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:02,821 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:52:02,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:02,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:02,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:02,873 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:02,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524625595] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:02,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:02,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:52:02,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529540544] [2021-06-05 06:52:02,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:52:02,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:02,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:52:02,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:52:02,874 INFO L87 Difference]: Start difference. First operand 24307 states and 92742 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:03,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:03,452 INFO L93 Difference]: Finished difference Result 30042 states and 111856 transitions. [2021-06-05 06:52:03,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:52:03,459 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:03,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:03,535 INFO L225 Difference]: With dead ends: 30042 [2021-06-05 06:52:03,536 INFO L226 Difference]: Without dead ends: 30034 [2021-06-05 06:52:03,536 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 269.3ms TimeCoverageRelationStatistics Valid=394, Invalid=1412, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:52:03,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30034 states. [2021-06-05 06:52:03,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30034 to 24129. [2021-06-05 06:52:04,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24129 states, 24128 states have (on average 3.821742374005305) internal successors, (92211), 24128 states have internal predecessors, (92211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:04,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24129 states to 24129 states and 92211 transitions. [2021-06-05 06:52:04,095 INFO L78 Accepts]: Start accepts. Automaton has 24129 states and 92211 transitions. Word has length 28 [2021-06-05 06:52:04,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:04,096 INFO L482 AbstractCegarLoop]: Abstraction has 24129 states and 92211 transitions. [2021-06-05 06:52:04,096 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:04,096 INFO L276 IsEmpty]: Start isEmpty. Operand 24129 states and 92211 transitions. [2021-06-05 06:52:04,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:04,132 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:04,132 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:04,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4145 [2021-06-05 06:52:04,333 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:04,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:04,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1046121180, now seen corresponding path program 132 times [2021-06-05 06:52:04,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:04,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384847962] [2021-06-05 06:52:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:04,363 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:04,363 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:04,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384847962] [2021-06-05 06:52:04,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384847962] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:04,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968187980] [2021-06-05 06:52:04,364 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:04,388 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:52:04,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:04,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:04,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:04,449 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:04,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968187980] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:04,449 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:04,450 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:52:04,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56536440] [2021-06-05 06:52:04,450 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:52:04,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:04,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:52:04,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:52:04,450 INFO L87 Difference]: Start difference. First operand 24129 states and 92211 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:05,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:05,178 INFO L93 Difference]: Finished difference Result 31875 states and 117476 transitions. [2021-06-05 06:52:05,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 06:52:05,179 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:05,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:05,259 INFO L225 Difference]: With dead ends: 31875 [2021-06-05 06:52:05,259 INFO L226 Difference]: Without dead ends: 31875 [2021-06-05 06:52:05,260 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 374.7ms TimeCoverageRelationStatistics Valid=566, Invalid=2086, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 06:52:05,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31875 states. [2021-06-05 06:52:05,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31875 to 25163. [2021-06-05 06:52:05,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25163 states, 25162 states have (on average 3.797631348859391) internal successors, (95556), 25162 states have internal predecessors, (95556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:05,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25163 states to 25163 states and 95556 transitions. [2021-06-05 06:52:05,968 INFO L78 Accepts]: Start accepts. Automaton has 25163 states and 95556 transitions. Word has length 28 [2021-06-05 06:52:05,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:05,968 INFO L482 AbstractCegarLoop]: Abstraction has 25163 states and 95556 transitions. [2021-06-05 06:52:05,968 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:05,968 INFO L276 IsEmpty]: Start isEmpty. Operand 25163 states and 95556 transitions. [2021-06-05 06:52:06,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:06,007 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:06,007 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:06,207 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4146,210 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:06,207 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:06,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:06,208 INFO L82 PathProgramCache]: Analyzing trace with hash -36901476, now seen corresponding path program 133 times [2021-06-05 06:52:06,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:06,208 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527231038] [2021-06-05 06:52:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:06,249 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:06,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:06,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527231038] [2021-06-05 06:52:06,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527231038] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:06,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491871169] [2021-06-05 06:52:06,249 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:06,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:06,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:52:06,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:06,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491871169] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:06,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:06,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-05 06:52:06,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422724055] [2021-06-05 06:52:06,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:52:06,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:06,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:52:06,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:52:06,323 INFO L87 Difference]: Start difference. First operand 25163 states and 95556 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:06,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:06,749 INFO L93 Difference]: Finished difference Result 30826 states and 116166 transitions. [2021-06-05 06:52:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:52:06,750 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:06,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:06,832 INFO L225 Difference]: With dead ends: 30826 [2021-06-05 06:52:06,832 INFO L226 Difference]: Without dead ends: 30813 [2021-06-05 06:52:06,832 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 142.6ms TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2021-06-05 06:52:06,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30813 states. [2021-06-05 06:52:07,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30813 to 29259. [2021-06-05 06:52:07,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29259 states, 29258 states have (on average 3.81594777496753) internal successors, (111647), 29258 states have internal predecessors, (111647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:07,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29259 states to 29259 states and 111647 transitions. [2021-06-05 06:52:07,485 INFO L78 Accepts]: Start accepts. Automaton has 29259 states and 111647 transitions. Word has length 28 [2021-06-05 06:52:07,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:07,485 INFO L482 AbstractCegarLoop]: Abstraction has 29259 states and 111647 transitions. [2021-06-05 06:52:07,486 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:07,486 INFO L276 IsEmpty]: Start isEmpty. Operand 29259 states and 111647 transitions. [2021-06-05 06:52:07,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:07,538 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:07,538 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:07,738 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4147,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:07,738 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:07,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:07,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1434176642, now seen corresponding path program 134 times [2021-06-05 06:52:07,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:07,739 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154392448] [2021-06-05 06:52:07,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:07,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:07,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154392448] [2021-06-05 06:52:07,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154392448] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:07,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715670992] [2021-06-05 06:52:07,771 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:07,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:52:07,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:07,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:52:07,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:07,844 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:07,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715670992] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:07,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:07,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-05 06:52:07,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125019863] [2021-06-05 06:52:07,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:52:07,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:07,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:52:07,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:52:07,845 INFO L87 Difference]: Start difference. First operand 29259 states and 111647 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:08,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:08,210 INFO L93 Difference]: Finished difference Result 32262 states and 120978 transitions. [2021-06-05 06:52:08,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:52:08,211 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:08,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:08,297 INFO L225 Difference]: With dead ends: 32262 [2021-06-05 06:52:08,297 INFO L226 Difference]: Without dead ends: 32262 [2021-06-05 06:52:08,297 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 129.9ms TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2021-06-05 06:52:08,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32262 states. [2021-06-05 06:52:08,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32262 to 29004. [2021-06-05 06:52:08,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29004 states, 29003 states have (on average 3.8122952797986414) internal successors, (110568), 29003 states have internal predecessors, (110568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:09,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29004 states to 29004 states and 110568 transitions. [2021-06-05 06:52:09,040 INFO L78 Accepts]: Start accepts. Automaton has 29004 states and 110568 transitions. Word has length 28 [2021-06-05 06:52:09,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:09,040 INFO L482 AbstractCegarLoop]: Abstraction has 29004 states and 110568 transitions. [2021-06-05 06:52:09,040 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:09,040 INFO L276 IsEmpty]: Start isEmpty. Operand 29004 states and 110568 transitions. [2021-06-05 06:52:09,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:09,091 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:09,091 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:09,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4148,212 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:09,292 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:09,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:09,292 INFO L82 PathProgramCache]: Analyzing trace with hash 1001300038, now seen corresponding path program 135 times [2021-06-05 06:52:09,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:09,292 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835225307] [2021-06-05 06:52:09,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:09,321 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:09,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:09,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835225307] [2021-06-05 06:52:09,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835225307] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:09,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119512526] [2021-06-05 06:52:09,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:09,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:52:09,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:09,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:09,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:09,412 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:09,413 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119512526] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:09,413 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:09,413 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:52:09,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507856296] [2021-06-05 06:52:09,413 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:52:09,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:09,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:52:09,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:52:09,413 INFO L87 Difference]: Start difference. First operand 29004 states and 110568 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:09,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:09,975 INFO L93 Difference]: Finished difference Result 35430 states and 131896 transitions. [2021-06-05 06:52:09,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:52:09,976 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:09,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:10,056 INFO L225 Difference]: With dead ends: 35430 [2021-06-05 06:52:10,056 INFO L226 Difference]: Without dead ends: 35422 [2021-06-05 06:52:10,056 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 247.7ms TimeCoverageRelationStatistics Valid=354, Invalid=1286, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:52:10,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35422 states. [2021-06-05 06:52:10,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35422 to 28970. [2021-06-05 06:52:10,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28970 states, 28969 states have (on average 3.8127308502191997) internal successors, (110451), 28969 states have internal predecessors, (110451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:10,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28970 states to 28970 states and 110451 transitions. [2021-06-05 06:52:10,711 INFO L78 Accepts]: Start accepts. Automaton has 28970 states and 110451 transitions. Word has length 28 [2021-06-05 06:52:10,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:10,712 INFO L482 AbstractCegarLoop]: Abstraction has 28970 states and 110451 transitions. [2021-06-05 06:52:10,712 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:10,712 INFO L276 IsEmpty]: Start isEmpty. Operand 28970 states and 110451 transitions. [2021-06-05 06:52:10,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:10,757 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:10,757 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:10,957 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4149,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:10,957 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:10,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:10,958 INFO L82 PathProgramCache]: Analyzing trace with hash 105479222, now seen corresponding path program 136 times [2021-06-05 06:52:10,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:10,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607066666] [2021-06-05 06:52:10,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:10,988 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:52:10,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:10,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607066666] [2021-06-05 06:52:10,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607066666] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:10,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168552751] [2021-06-05 06:52:10,989 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:11,011 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:52:11,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:11,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:52:11,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:11,059 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:52:11,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168552751] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:11,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:11,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-05 06:52:11,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027765160] [2021-06-05 06:52:11,059 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:52:11,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:11,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:52:11,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:52:11,059 INFO L87 Difference]: Start difference. First operand 28970 states and 110451 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:11,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:11,476 INFO L93 Difference]: Finished difference Result 31816 states and 119913 transitions. [2021-06-05 06:52:11,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:52:11,483 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:11,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:11,555 INFO L225 Difference]: With dead ends: 31816 [2021-06-05 06:52:11,555 INFO L226 Difference]: Without dead ends: 31816 [2021-06-05 06:52:11,555 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 172.4ms TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:52:11,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31816 states. [2021-06-05 06:52:12,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31816 to 29502. [2021-06-05 06:52:12,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29502 states, 29501 states have (on average 3.8112267380766753) internal successors, (112435), 29501 states have internal predecessors, (112435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:12,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29502 states to 29502 states and 112435 transitions. [2021-06-05 06:52:12,234 INFO L78 Accepts]: Start accepts. Automaton has 29502 states and 112435 transitions. Word has length 28 [2021-06-05 06:52:12,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:12,234 INFO L482 AbstractCegarLoop]: Abstraction has 29502 states and 112435 transitions. [2021-06-05 06:52:12,234 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:12,234 INFO L276 IsEmpty]: Start isEmpty. Operand 29502 states and 112435 transitions. [2021-06-05 06:52:12,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:12,280 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:12,280 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:12,480 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4150 [2021-06-05 06:52:12,480 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:12,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:12,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1598636696, now seen corresponding path program 137 times [2021-06-05 06:52:12,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:12,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694696392] [2021-06-05 06:52:12,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:52:12,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:12,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694696392] [2021-06-05 06:52:12,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694696392] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:12,511 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095310275] [2021-06-05 06:52:12,511 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:12,534 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:52:12,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:12,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:12,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:52:12,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095310275] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:12,586 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:12,586 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:52:12,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753395739] [2021-06-05 06:52:12,586 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:52:12,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:12,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:52:12,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:52:12,587 INFO L87 Difference]: Start difference. First operand 29502 states and 112435 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:13,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:13,149 INFO L93 Difference]: Finished difference Result 36375 states and 135365 transitions. [2021-06-05 06:52:13,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:52:13,149 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:13,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:13,233 INFO L225 Difference]: With dead ends: 36375 [2021-06-05 06:52:13,233 INFO L226 Difference]: Without dead ends: 36351 [2021-06-05 06:52:13,233 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 249.4ms TimeCoverageRelationStatistics Valid=348, Invalid=1292, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:52:13,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36351 states. [2021-06-05 06:52:13,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36351 to 29684. [2021-06-05 06:52:13,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29684 states, 29683 states have (on average 3.806960212916484) internal successors, (113002), 29683 states have internal predecessors, (113002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:13,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29684 states to 29684 states and 113002 transitions. [2021-06-05 06:52:13,951 INFO L78 Accepts]: Start accepts. Automaton has 29684 states and 113002 transitions. Word has length 28 [2021-06-05 06:52:13,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:13,951 INFO L482 AbstractCegarLoop]: Abstraction has 29684 states and 113002 transitions. [2021-06-05 06:52:13,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:13,952 INFO L276 IsEmpty]: Start isEmpty. Operand 29684 states and 113002 transitions. [2021-06-05 06:52:14,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:14,002 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:14,002 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:14,202 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4151,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:14,202 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:14,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:14,203 INFO L82 PathProgramCache]: Analyzing trace with hash -252372998, now seen corresponding path program 138 times [2021-06-05 06:52:14,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:14,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811778395] [2021-06-05 06:52:14,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:14,239 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:14,239 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:14,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811778395] [2021-06-05 06:52:14,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811778395] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:14,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118909141] [2021-06-05 06:52:14,239 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:14,262 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:52:14,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:14,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:52:14,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:14,311 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:14,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118909141] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:14,311 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:14,311 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2021-06-05 06:52:14,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907787235] [2021-06-05 06:52:14,311 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:52:14,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:14,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:52:14,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:52:14,311 INFO L87 Difference]: Start difference. First operand 29684 states and 113002 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:14,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:14,761 INFO L93 Difference]: Finished difference Result 32240 states and 121414 transitions. [2021-06-05 06:52:14,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:52:14,761 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:14,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:14,847 INFO L225 Difference]: With dead ends: 32240 [2021-06-05 06:52:14,847 INFO L226 Difference]: Without dead ends: 32240 [2021-06-05 06:52:14,847 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 207.7ms TimeCoverageRelationStatistics Valid=273, Invalid=657, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:52:14,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32240 states. [2021-06-05 06:52:15,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32240 to 29610. [2021-06-05 06:52:15,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29610 states, 29609 states have (on average 3.8078287007328853) internal successors, (112746), 29609 states have internal predecessors, (112746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:15,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29610 states to 29610 states and 112746 transitions. [2021-06-05 06:52:15,635 INFO L78 Accepts]: Start accepts. Automaton has 29610 states and 112746 transitions. Word has length 28 [2021-06-05 06:52:15,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:15,635 INFO L482 AbstractCegarLoop]: Abstraction has 29610 states and 112746 transitions. [2021-06-05 06:52:15,635 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:15,635 INFO L276 IsEmpty]: Start isEmpty. Operand 29610 states and 112746 transitions. [2021-06-05 06:52:15,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:15,692 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:15,692 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:15,892 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 216 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4152 [2021-06-05 06:52:15,892 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:15,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:15,893 INFO L82 PathProgramCache]: Analyzing trace with hash 606143132, now seen corresponding path program 139 times [2021-06-05 06:52:15,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:15,893 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080073806] [2021-06-05 06:52:15,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:15,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:15,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080073806] [2021-06-05 06:52:15,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080073806] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:15,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059377710] [2021-06-05 06:52:15,933 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:15,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:15,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:16,016 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:16,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059377710] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:16,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:16,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 06:52:16,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728070849] [2021-06-05 06:52:16,025 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:52:16,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:16,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:52:16,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:52:16,025 INFO L87 Difference]: Start difference. First operand 29610 states and 112746 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:16,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:16,720 INFO L93 Difference]: Finished difference Result 36298 states and 135106 transitions. [2021-06-05 06:52:16,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:52:16,722 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:16,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:16,820 INFO L225 Difference]: With dead ends: 36298 [2021-06-05 06:52:16,820 INFO L226 Difference]: Without dead ends: 36258 [2021-06-05 06:52:16,820 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 324.0ms TimeCoverageRelationStatistics Valid=425, Invalid=1645, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:52:16,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36258 states. [2021-06-05 06:52:17,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36258 to 29776. [2021-06-05 06:52:17,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29776 states, 29775 states have (on average 3.803761544920235) internal successors, (113257), 29775 states have internal predecessors, (113257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:17,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29776 states to 29776 states and 113257 transitions. [2021-06-05 06:52:17,532 INFO L78 Accepts]: Start accepts. Automaton has 29776 states and 113257 transitions. Word has length 28 [2021-06-05 06:52:17,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:17,532 INFO L482 AbstractCegarLoop]: Abstraction has 29776 states and 113257 transitions. [2021-06-05 06:52:17,532 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:17,532 INFO L276 IsEmpty]: Start isEmpty. Operand 29776 states and 113257 transitions. [2021-06-05 06:52:17,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:17,582 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:17,582 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:17,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4153 [2021-06-05 06:52:17,783 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:17,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:17,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1649950116, now seen corresponding path program 140 times [2021-06-05 06:52:17,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:17,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38284488] [2021-06-05 06:52:17,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:17,812 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:17,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:17,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38284488] [2021-06-05 06:52:17,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38284488] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:17,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091704224] [2021-06-05 06:52:17,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:17,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:52:17,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:17,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:17,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:17,930 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:17,930 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091704224] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:17,930 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:17,930 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:52:17,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655718854] [2021-06-05 06:52:17,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:52:17,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:17,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:52:17,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:52:17,931 INFO L87 Difference]: Start difference. First operand 29776 states and 113257 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:19,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:19,161 INFO L93 Difference]: Finished difference Result 68142 states and 250877 transitions. [2021-06-05 06:52:19,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 06:52:19,162 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:19,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:19,340 INFO L225 Difference]: With dead ends: 68142 [2021-06-05 06:52:19,340 INFO L226 Difference]: Without dead ends: 68142 [2021-06-05 06:52:19,341 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 645.1ms TimeCoverageRelationStatistics Valid=1088, Invalid=3742, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:52:19,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68142 states. [2021-06-05 06:52:20,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68142 to 37503. [2021-06-05 06:52:20,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37503 states, 37502 states have (on average 3.8855527705189057) internal successors, (145716), 37502 states have internal predecessors, (145716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:20,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37503 states to 37503 states and 145716 transitions. [2021-06-05 06:52:20,662 INFO L78 Accepts]: Start accepts. Automaton has 37503 states and 145716 transitions. Word has length 28 [2021-06-05 06:52:20,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:20,662 INFO L482 AbstractCegarLoop]: Abstraction has 37503 states and 145716 transitions. [2021-06-05 06:52:20,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:20,662 INFO L276 IsEmpty]: Start isEmpty. Operand 37503 states and 145716 transitions. [2021-06-05 06:52:20,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:20,720 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:20,720 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:20,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4154 [2021-06-05 06:52:20,920 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:20,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:20,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1082998036, now seen corresponding path program 141 times [2021-06-05 06:52:20,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:20,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063733983] [2021-06-05 06:52:20,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:20,950 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:20,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:20,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063733983] [2021-06-05 06:52:20,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063733983] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:20,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615569153] [2021-06-05 06:52:20,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:20,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:52:20,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:20,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:20,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:21,066 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:21,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615569153] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:21,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:21,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:52:21,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107852840] [2021-06-05 06:52:21,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:52:21,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:21,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:52:21,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:52:21,067 INFO L87 Difference]: Start difference. First operand 37503 states and 145716 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:22,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:22,542 INFO L93 Difference]: Finished difference Result 67515 states and 249216 transitions. [2021-06-05 06:52:22,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 06:52:22,542 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:22,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:22,714 INFO L225 Difference]: With dead ends: 67515 [2021-06-05 06:52:22,714 INFO L226 Difference]: Without dead ends: 67515 [2021-06-05 06:52:22,714 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 615.5ms TimeCoverageRelationStatistics Valid=1088, Invalid=3742, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:52:22,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67515 states. [2021-06-05 06:52:23,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67515 to 37500. [2021-06-05 06:52:23,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37500 states, 37499 states have (on average 3.885490279740793) internal successors, (145702), 37499 states have internal predecessors, (145702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:24,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37500 states to 37500 states and 145702 transitions. [2021-06-05 06:52:24,052 INFO L78 Accepts]: Start accepts. Automaton has 37500 states and 145702 transitions. Word has length 28 [2021-06-05 06:52:24,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:24,053 INFO L482 AbstractCegarLoop]: Abstraction has 37500 states and 145702 transitions. [2021-06-05 06:52:24,053 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:24,053 INFO L276 IsEmpty]: Start isEmpty. Operand 37500 states and 145702 transitions. [2021-06-05 06:52:24,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:24,109 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:24,109 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:24,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4155 [2021-06-05 06:52:24,310 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:24,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:24,310 INFO L82 PathProgramCache]: Analyzing trace with hash 2039623402, now seen corresponding path program 142 times [2021-06-05 06:52:24,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:24,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702973863] [2021-06-05 06:52:24,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:24,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:24,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702973863] [2021-06-05 06:52:24,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702973863] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:24,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976553595] [2021-06-05 06:52:24,339 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:24,361 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:52:24,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:24,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:24,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:24,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976553595] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:24,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:24,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:52:24,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803669544] [2021-06-05 06:52:24,446 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:52:24,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:24,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:52:24,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:52:24,446 INFO L87 Difference]: Start difference. First operand 37500 states and 145702 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:25,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:25,713 INFO L93 Difference]: Finished difference Result 62937 states and 233716 transitions. [2021-06-05 06:52:25,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 06:52:25,713 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:25,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:25,879 INFO L225 Difference]: With dead ends: 62937 [2021-06-05 06:52:25,880 INFO L226 Difference]: Without dead ends: 62937 [2021-06-05 06:52:25,880 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 609.4ms TimeCoverageRelationStatistics Valid=944, Invalid=3216, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 06:52:25,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62937 states. [2021-06-05 06:52:27,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62937 to 37524. [2021-06-05 06:52:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37524 states, 37523 states have (on average 3.885830024251792) internal successors, (145808), 37523 states have internal predecessors, (145808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37524 states to 37524 states and 145808 transitions. [2021-06-05 06:52:27,271 INFO L78 Accepts]: Start accepts. Automaton has 37524 states and 145808 transitions. Word has length 28 [2021-06-05 06:52:27,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:27,271 INFO L482 AbstractCegarLoop]: Abstraction has 37524 states and 145808 transitions. [2021-06-05 06:52:27,271 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:27,271 INFO L276 IsEmpty]: Start isEmpty. Operand 37524 states and 145808 transitions. [2021-06-05 06:52:27,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:27,338 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:27,338 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:27,538 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4156 [2021-06-05 06:52:27,538 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:27,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:27,538 INFO L82 PathProgramCache]: Analyzing trace with hash 2120999490, now seen corresponding path program 143 times [2021-06-05 06:52:27,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:27,539 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632671178] [2021-06-05 06:52:27,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:27,571 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:27,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:27,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632671178] [2021-06-05 06:52:27,571 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632671178] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:27,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334498954] [2021-06-05 06:52:27,571 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:27,595 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:52:27,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:27,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:27,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:27,839 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:27,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334498954] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:27,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:27,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:52:27,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421592757] [2021-06-05 06:52:27,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:52:27,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:27,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:52:27,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:52:27,839 INFO L87 Difference]: Start difference. First operand 37524 states and 145808 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:28,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:28,907 INFO L93 Difference]: Finished difference Result 62070 states and 231476 transitions. [2021-06-05 06:52:28,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 06:52:28,908 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:28,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:29,077 INFO L225 Difference]: With dead ends: 62070 [2021-06-05 06:52:29,077 INFO L226 Difference]: Without dead ends: 62062 [2021-06-05 06:52:29,077 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 715.5ms TimeCoverageRelationStatistics Valid=781, Invalid=2641, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 06:52:29,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62062 states. [2021-06-05 06:52:30,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62062 to 37524. [2021-06-05 06:52:30,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37524 states, 37523 states have (on average 3.885670122324974) internal successors, (145802), 37523 states have internal predecessors, (145802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:30,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37524 states to 37524 states and 145802 transitions. [2021-06-05 06:52:30,525 INFO L78 Accepts]: Start accepts. Automaton has 37524 states and 145802 transitions. Word has length 28 [2021-06-05 06:52:30,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:30,525 INFO L482 AbstractCegarLoop]: Abstraction has 37524 states and 145802 transitions. [2021-06-05 06:52:30,525 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:30,525 INFO L276 IsEmpty]: Start isEmpty. Operand 37524 states and 145802 transitions. [2021-06-05 06:52:30,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:30,584 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:30,584 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:30,788 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4157,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:30,789 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:30,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:30,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1243310590, now seen corresponding path program 144 times [2021-06-05 06:52:30,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:30,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504926750] [2021-06-05 06:52:30,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:30,818 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:30,818 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:30,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504926750] [2021-06-05 06:52:30,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504926750] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:30,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277254095] [2021-06-05 06:52:30,818 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:30,841 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:52:30,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:30,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:30,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:30,935 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:30,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277254095] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:30,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:30,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:52:30,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507306886] [2021-06-05 06:52:30,935 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:52:30,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:30,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:52:30,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:52:30,936 INFO L87 Difference]: Start difference. First operand 37524 states and 145802 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:31,810 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-06-05 06:52:32,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:32,111 INFO L93 Difference]: Finished difference Result 61748 states and 230607 transitions. [2021-06-05 06:52:32,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 06:52:32,112 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:32,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:32,269 INFO L225 Difference]: With dead ends: 61748 [2021-06-05 06:52:32,269 INFO L226 Difference]: Without dead ends: 61748 [2021-06-05 06:52:32,269 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 649.2ms TimeCoverageRelationStatistics Valid=872, Invalid=3034, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 06:52:32,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61748 states. [2021-06-05 06:52:33,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61748 to 37532. [2021-06-05 06:52:33,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37532 states, 37531 states have (on average 3.8857477818336843) internal successors, (145836), 37531 states have internal predecessors, (145836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:33,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37532 states to 37532 states and 145836 transitions. [2021-06-05 06:52:33,586 INFO L78 Accepts]: Start accepts. Automaton has 37532 states and 145836 transitions. Word has length 28 [2021-06-05 06:52:33,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:33,586 INFO L482 AbstractCegarLoop]: Abstraction has 37532 states and 145836 transitions. [2021-06-05 06:52:33,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:33,586 INFO L276 IsEmpty]: Start isEmpty. Operand 37532 states and 145836 transitions. [2021-06-05 06:52:33,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:33,650 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:33,650 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:33,850 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4158,222 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:33,850 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:33,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:33,851 INFO L82 PathProgramCache]: Analyzing trace with hash 399728564, now seen corresponding path program 145 times [2021-06-05 06:52:33,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:33,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762768249] [2021-06-05 06:52:33,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:33,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:33,882 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:33,883 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:33,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762768249] [2021-06-05 06:52:33,883 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762768249] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:33,883 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500105474] [2021-06-05 06:52:33,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:33,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:33,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:34,001 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:34,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500105474] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:34,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:34,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:52:34,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921158291] [2021-06-05 06:52:34,001 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:52:34,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:34,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:52:34,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:52:34,002 INFO L87 Difference]: Start difference. First operand 37532 states and 145836 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:35,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:35,160 INFO L93 Difference]: Finished difference Result 61537 states and 230081 transitions. [2021-06-05 06:52:35,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 06:52:35,160 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:35,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:35,321 INFO L225 Difference]: With dead ends: 61537 [2021-06-05 06:52:35,321 INFO L226 Difference]: Without dead ends: 61529 [2021-06-05 06:52:35,321 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 485.5ms TimeCoverageRelationStatistics Valid=767, Invalid=2539, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 06:52:35,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61529 states. [2021-06-05 06:52:36,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61529 to 37532. [2021-06-05 06:52:36,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37532 states, 37531 states have (on average 3.885694492552823) internal successors, (145834), 37531 states have internal predecessors, (145834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:36,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37532 states to 37532 states and 145834 transitions. [2021-06-05 06:52:36,647 INFO L78 Accepts]: Start accepts. Automaton has 37532 states and 145834 transitions. Word has length 28 [2021-06-05 06:52:36,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:36,647 INFO L482 AbstractCegarLoop]: Abstraction has 37532 states and 145834 transitions. [2021-06-05 06:52:36,647 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:36,647 INFO L276 IsEmpty]: Start isEmpty. Operand 37532 states and 145834 transitions. [2021-06-05 06:52:36,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:36,709 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:36,709 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:36,910 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4159,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:36,910 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:36,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:36,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1403156548, now seen corresponding path program 146 times [2021-06-05 06:52:36,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:36,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080479056] [2021-06-05 06:52:36,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:36,941 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:36,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:36,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080479056] [2021-06-05 06:52:36,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080479056] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:36,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471500274] [2021-06-05 06:52:36,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:36,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:52:36,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:36,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:36,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:37,041 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471500274] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:37,041 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:37,041 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 06:52:37,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960519407] [2021-06-05 06:52:37,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:52:37,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:37,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:52:37,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:52:37,042 INFO L87 Difference]: Start difference. First operand 37532 states and 145834 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:38,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:38,434 INFO L93 Difference]: Finished difference Result 60940 states and 226561 transitions. [2021-06-05 06:52:38,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 06:52:38,435 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:38,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:38,610 INFO L225 Difference]: With dead ends: 60940 [2021-06-05 06:52:38,610 INFO L226 Difference]: Without dead ends: 60940 [2021-06-05 06:52:38,611 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 609.6ms TimeCoverageRelationStatistics Valid=978, Invalid=3714, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 06:52:38,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60940 states. [2021-06-05 06:52:39,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60940 to 40347. [2021-06-05 06:52:39,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40347 states, 40346 states have (on average 3.8897040598820207) internal successors, (156934), 40346 states have internal predecessors, (156934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:39,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40347 states to 40347 states and 156934 transitions. [2021-06-05 06:52:39,983 INFO L78 Accepts]: Start accepts. Automaton has 40347 states and 156934 transitions. Word has length 28 [2021-06-05 06:52:39,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:39,983 INFO L482 AbstractCegarLoop]: Abstraction has 40347 states and 156934 transitions. [2021-06-05 06:52:39,983 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:39,983 INFO L276 IsEmpty]: Start isEmpty. Operand 40347 states and 156934 transitions. [2021-06-05 06:52:40,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:40,045 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:40,045 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:40,245 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4160 [2021-06-05 06:52:40,245 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:40,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:40,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1484532636, now seen corresponding path program 147 times [2021-06-05 06:52:40,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:40,246 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16827454] [2021-06-05 06:52:40,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:40,279 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:40,279 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:40,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16827454] [2021-06-05 06:52:40,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16827454] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:40,279 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489758367] [2021-06-05 06:52:40,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:40,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:52:40,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:40,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:40,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:40,370 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:40,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489758367] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:40,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:40,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 06:52:40,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197184237] [2021-06-05 06:52:40,370 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:52:40,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:40,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:52:40,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:52:40,371 INFO L87 Difference]: Start difference. First operand 40347 states and 156934 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:41,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:41,498 INFO L93 Difference]: Finished difference Result 60463 states and 225303 transitions. [2021-06-05 06:52:41,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 06:52:41,498 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:41,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:41,653 INFO L225 Difference]: With dead ends: 60463 [2021-06-05 06:52:41,654 INFO L226 Difference]: Without dead ends: 60455 [2021-06-05 06:52:41,654 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 451.4ms TimeCoverageRelationStatistics Valid=736, Invalid=2804, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:52:41,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60455 states. [2021-06-05 06:52:42,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60455 to 40063. [2021-06-05 06:52:42,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40063 states, 40062 states have (on average 3.8951125755079627) internal successors, (156046), 40062 states have internal predecessors, (156046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:43,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40063 states to 40063 states and 156046 transitions. [2021-06-05 06:52:43,063 INFO L78 Accepts]: Start accepts. Automaton has 40063 states and 156046 transitions. Word has length 28 [2021-06-05 06:52:43,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:43,063 INFO L482 AbstractCegarLoop]: Abstraction has 40063 states and 156046 transitions. [2021-06-05 06:52:43,063 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:43,063 INFO L276 IsEmpty]: Start isEmpty. Operand 40063 states and 156046 transitions. [2021-06-05 06:52:43,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:43,139 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:43,139 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:43,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4161,225 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:43,340 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:43,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:43,340 INFO L82 PathProgramCache]: Analyzing trace with hash -30559336, now seen corresponding path program 148 times [2021-06-05 06:52:43,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:43,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270552426] [2021-06-05 06:52:43,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:43,373 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:43,374 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:43,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270552426] [2021-06-05 06:52:43,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270552426] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:43,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417657382] [2021-06-05 06:52:43,374 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:43,398 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:52:43,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:43,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:43,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:43,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417657382] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:43,480 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:43,480 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 06:52:43,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120757805] [2021-06-05 06:52:43,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:52:43,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:43,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:52:43,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:52:43,480 INFO L87 Difference]: Start difference. First operand 40063 states and 156046 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:44,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:44,597 INFO L93 Difference]: Finished difference Result 59012 states and 221313 transitions. [2021-06-05 06:52:44,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:52:44,597 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:44,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:44,753 INFO L225 Difference]: With dead ends: 59012 [2021-06-05 06:52:44,753 INFO L226 Difference]: Without dead ends: 58988 [2021-06-05 06:52:44,754 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 365.2ms TimeCoverageRelationStatistics Valid=498, Invalid=1758, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 06:52:44,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58988 states. [2021-06-05 06:52:45,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58988 to 39973. [2021-06-05 06:52:45,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39973 states, 39972 states have (on average 3.8949514660262183) internal successors, (155689), 39972 states have internal predecessors, (155689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:45,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39973 states to 39973 states and 155689 transitions. [2021-06-05 06:52:45,960 INFO L78 Accepts]: Start accepts. Automaton has 39973 states and 155689 transitions. Word has length 28 [2021-06-05 06:52:45,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:45,960 INFO L482 AbstractCegarLoop]: Abstraction has 39973 states and 155689 transitions. [2021-06-05 06:52:45,960 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:45,961 INFO L276 IsEmpty]: Start isEmpty. Operand 39973 states and 155689 transitions. [2021-06-05 06:52:46,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:46,026 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:46,026 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:46,226 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 226 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4162 [2021-06-05 06:52:46,227 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:46,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:46,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1566567380, now seen corresponding path program 149 times [2021-06-05 06:52:46,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:46,227 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912889550] [2021-06-05 06:52:46,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:52:46,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:46,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912889550] [2021-06-05 06:52:46,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912889550] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:46,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958130597] [2021-06-05 06:52:46,275 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:46,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:52:46,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:46,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:46,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:46,390 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:46,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958130597] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:46,390 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:46,390 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:52:46,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343998027] [2021-06-05 06:52:46,391 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:52:46,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:46,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:52:46,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:52:46,391 INFO L87 Difference]: Start difference. First operand 39973 states and 155689 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:46,977 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2021-06-05 06:52:47,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:47,716 INFO L93 Difference]: Finished difference Result 60251 states and 224712 transitions. [2021-06-05 06:52:47,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 06:52:47,716 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:47,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:47,871 INFO L225 Difference]: With dead ends: 60251 [2021-06-05 06:52:47,871 INFO L226 Difference]: Without dead ends: 60251 [2021-06-05 06:52:47,872 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1536 ImplicationChecksByTransitivity, 765.2ms TimeCoverageRelationStatistics Valid=878, Invalid=3412, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 06:52:47,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60251 states. [2021-06-05 06:52:49,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60251 to 40069. [2021-06-05 06:52:49,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40069 states, 40068 states have (on average 3.8934561245882002) internal successors, (156003), 40068 states have internal predecessors, (156003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:49,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40069 states to 40069 states and 156003 transitions. [2021-06-05 06:52:49,458 INFO L78 Accepts]: Start accepts. Automaton has 40069 states and 156003 transitions. Word has length 28 [2021-06-05 06:52:49,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:49,458 INFO L482 AbstractCegarLoop]: Abstraction has 40069 states and 156003 transitions. [2021-06-05 06:52:49,458 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:49,458 INFO L276 IsEmpty]: Start isEmpty. Operand 40069 states and 156003 transitions. [2021-06-05 06:52:49,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:49,514 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:49,514 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:49,715 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 227 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4163 [2021-06-05 06:52:49,715 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:49,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:49,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1085360762, now seen corresponding path program 150 times [2021-06-05 06:52:49,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:49,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163037014] [2021-06-05 06:52:49,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:49,745 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:52:49,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:49,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163037014] [2021-06-05 06:52:49,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163037014] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:49,746 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444670144] [2021-06-05 06:52:49,746 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:49,769 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:52:49,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:49,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:49,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:49,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444670144] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:49,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:49,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:52:49,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806248894] [2021-06-05 06:52:49,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:52:49,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:49,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:52:49,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:52:49,855 INFO L87 Difference]: Start difference. First operand 40069 states and 156003 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:50,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:50,809 INFO L93 Difference]: Finished difference Result 59938 states and 223824 transitions. [2021-06-05 06:52:50,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:52:50,810 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:50,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:51,179 INFO L225 Difference]: With dead ends: 59938 [2021-06-05 06:52:51,179 INFO L226 Difference]: Without dead ends: 59930 [2021-06-05 06:52:51,179 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 459.7ms TimeCoverageRelationStatistics Valid=716, Invalid=2590, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 06:52:51,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59930 states. [2021-06-05 06:52:52,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59930 to 40001. [2021-06-05 06:52:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40001 states, 40000 states have (on average 3.894775) internal successors, (155791), 40000 states have internal predecessors, (155791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:52,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40001 states to 40001 states and 155791 transitions. [2021-06-05 06:52:52,271 INFO L78 Accepts]: Start accepts. Automaton has 40001 states and 155791 transitions. Word has length 28 [2021-06-05 06:52:52,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:52,271 INFO L482 AbstractCegarLoop]: Abstraction has 40001 states and 155791 transitions. [2021-06-05 06:52:52,271 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:52,271 INFO L276 IsEmpty]: Start isEmpty. Operand 40001 states and 155791 transitions. [2021-06-05 06:52:52,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:52,332 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:52,332 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:52,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4164,228 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:52,532 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:52,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:52,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1942149356, now seen corresponding path program 151 times [2021-06-05 06:52:52,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:52,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151658543] [2021-06-05 06:52:52,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:52,571 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:52:52,571 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:52,571 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151658543] [2021-06-05 06:52:52,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151658543] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:52,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567832937] [2021-06-05 06:52:52,572 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:52,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:52,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:52,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:52,672 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:52,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567832937] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:52,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:52,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:52:52,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248488571] [2021-06-05 06:52:52,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:52:52,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:52,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:52:52,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:52:52,673 INFO L87 Difference]: Start difference. First operand 40001 states and 155791 transitions. Second operand has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:53,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:53,683 INFO L93 Difference]: Finished difference Result 58669 states and 220313 transitions. [2021-06-05 06:52:53,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 06:52:53,684 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:53,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:53,847 INFO L225 Difference]: With dead ends: 58669 [2021-06-05 06:52:53,847 INFO L226 Difference]: Without dead ends: 58645 [2021-06-05 06:52:53,847 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 331.0ms TimeCoverageRelationStatistics Valid=487, Invalid=1675, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 06:52:53,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58645 states. [2021-06-05 06:52:55,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58645 to 39977. [2021-06-05 06:52:55,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39977 states, 39976 states have (on average 3.894911947168301) internal successors, (155703), 39976 states have internal predecessors, (155703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:55,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39977 states to 39977 states and 155703 transitions. [2021-06-05 06:52:55,246 INFO L78 Accepts]: Start accepts. Automaton has 39977 states and 155703 transitions. Word has length 28 [2021-06-05 06:52:55,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:55,246 INFO L482 AbstractCegarLoop]: Abstraction has 39977 states and 155703 transitions. [2021-06-05 06:52:55,246 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 15 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:55,246 INFO L276 IsEmpty]: Start isEmpty. Operand 39977 states and 155703 transitions. [2021-06-05 06:52:55,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:55,312 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:55,312 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:55,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4165 [2021-06-05 06:52:55,525 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:55,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:55,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1119483464, now seen corresponding path program 152 times [2021-06-05 06:52:55,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:55,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398147438] [2021-06-05 06:52:55,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:55,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:55,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398147438] [2021-06-05 06:52:55,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398147438] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:55,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984150046] [2021-06-05 06:52:55,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:55,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:52:55,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:55,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:55,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:55,656 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:55,656 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984150046] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:55,656 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:55,656 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:52:55,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524497799] [2021-06-05 06:52:55,656 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:52:55,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:55,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:52:55,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:52:55,657 INFO L87 Difference]: Start difference. First operand 39977 states and 155703 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:56,486 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2021-06-05 06:52:57,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:52:57,278 INFO L93 Difference]: Finished difference Result 61863 states and 229407 transitions. [2021-06-05 06:52:57,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-06-05 06:52:57,279 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:52:57,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:52:57,448 INFO L225 Difference]: With dead ends: 61863 [2021-06-05 06:52:57,448 INFO L226 Difference]: Without dead ends: 61863 [2021-06-05 06:52:57,449 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 983.4ms TimeCoverageRelationStatistics Valid=1421, Invalid=5889, Unknown=0, NotChecked=0, Total=7310 [2021-06-05 06:52:57,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61863 states. [2021-06-05 06:52:58,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61863 to 44335. [2021-06-05 06:52:58,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44335 states, 44334 states have (on average 3.8447692515902014) internal successors, (170454), 44334 states have internal predecessors, (170454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:58,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44335 states to 44335 states and 170454 transitions. [2021-06-05 06:52:58,966 INFO L78 Accepts]: Start accepts. Automaton has 44335 states and 170454 transitions. Word has length 28 [2021-06-05 06:52:58,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:52:58,967 INFO L482 AbstractCegarLoop]: Abstraction has 44335 states and 170454 transitions. [2021-06-05 06:52:58,967 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:52:58,967 INFO L276 IsEmpty]: Start isEmpty. Operand 44335 states and 170454 transitions. [2021-06-05 06:52:59,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:52:59,042 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:52:59,042 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:52:59,244 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 230 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4166 [2021-06-05 06:52:59,245 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:52:59,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:52:59,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1200859552, now seen corresponding path program 153 times [2021-06-05 06:52:59,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:52:59,245 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693197372] [2021-06-05 06:52:59,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:52:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:52:59,284 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:59,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:52:59,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693197372] [2021-06-05 06:52:59,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693197372] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:59,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818192152] [2021-06-05 06:52:59,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:52:59,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:52:59,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:52:59,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:52:59,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:52:59,376 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:52:59,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818192152] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:52:59,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:52:59,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:52:59,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593839476] [2021-06-05 06:52:59,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:52:59,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:52:59,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:52:59,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:52:59,376 INFO L87 Difference]: Start difference. First operand 44335 states and 170454 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:00,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:00,828 INFO L93 Difference]: Finished difference Result 61094 states and 227301 transitions. [2021-06-05 06:53:00,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 06:53:00,828 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:00,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:00,976 INFO L225 Difference]: With dead ends: 61094 [2021-06-05 06:53:00,977 INFO L226 Difference]: Without dead ends: 61086 [2021-06-05 06:53:00,977 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1934 ImplicationChecksByTransitivity, 667.6ms TimeCoverageRelationStatistics Valid=1035, Invalid=4221, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 06:53:01,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61086 states. [2021-06-05 06:53:02,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61086 to 43181. [2021-06-05 06:53:02,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43181 states, 43180 states have (on average 3.8640805928670683) internal successors, (166851), 43180 states have internal predecessors, (166851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:02,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43181 states to 43181 states and 166851 transitions. [2021-06-05 06:53:02,183 INFO L78 Accepts]: Start accepts. Automaton has 43181 states and 166851 transitions. Word has length 28 [2021-06-05 06:53:02,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:02,183 INFO L482 AbstractCegarLoop]: Abstraction has 43181 states and 166851 transitions. [2021-06-05 06:53:02,183 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:02,184 INFO L276 IsEmpty]: Start isEmpty. Operand 43181 states and 166851 transitions. [2021-06-05 06:53:02,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:02,249 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:02,249 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:02,450 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4167 [2021-06-05 06:53:02,450 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:02,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:02,450 INFO L82 PathProgramCache]: Analyzing trace with hash -314232420, now seen corresponding path program 154 times [2021-06-05 06:53:02,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:02,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291395721] [2021-06-05 06:53:02,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:02,486 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:02,486 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:02,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291395721] [2021-06-05 06:53:02,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291395721] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:02,486 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115254260] [2021-06-05 06:53:02,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:02,508 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:53:02,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:53:02,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:53:02,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:02,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115254260] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:02,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:02,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:53:02,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583450657] [2021-06-05 06:53:02,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:53:02,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:02,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:53:02,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:53:02,571 INFO L87 Difference]: Start difference. First operand 43181 states and 166851 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:03,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:03,807 INFO L93 Difference]: Finished difference Result 59433 states and 222664 transitions. [2021-06-05 06:53:03,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 06:53:03,807 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:03,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:03,960 INFO L225 Difference]: With dead ends: 59433 [2021-06-05 06:53:03,960 INFO L226 Difference]: Without dead ends: 59409 [2021-06-05 06:53:03,960 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 548.0ms TimeCoverageRelationStatistics Valid=814, Invalid=3218, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 06:53:04,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59409 states. [2021-06-05 06:53:05,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59409 to 43201. [2021-06-05 06:53:05,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43201 states, 43200 states have (on average 3.861782407407407) internal successors, (166829), 43200 states have internal predecessors, (166829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:05,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43201 states to 43201 states and 166829 transitions. [2021-06-05 06:53:05,335 INFO L78 Accepts]: Start accepts. Automaton has 43201 states and 166829 transitions. Word has length 28 [2021-06-05 06:53:05,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:05,335 INFO L482 AbstractCegarLoop]: Abstraction has 43201 states and 166829 transitions. [2021-06-05 06:53:05,335 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:05,335 INFO L276 IsEmpty]: Start isEmpty. Operand 43201 states and 166829 transitions. [2021-06-05 06:53:05,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:05,407 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:05,407 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:05,607 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4168,232 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:05,608 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:05,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:05,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1316197732, now seen corresponding path program 155 times [2021-06-05 06:53:05,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:05,608 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907772012] [2021-06-05 06:53:05,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:05,643 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:05,644 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:05,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907772012] [2021-06-05 06:53:05,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907772012] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:05,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414629606] [2021-06-05 06:53:05,644 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:05,667 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:53:05,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:53:05,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:53:05,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:05,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414629606] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:05,737 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:05,737 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:53:05,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070061221] [2021-06-05 06:53:05,737 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:53:05,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:05,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:53:05,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:53:05,738 INFO L87 Difference]: Start difference. First operand 43201 states and 166829 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:06,247 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-06-05 06:53:06,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:06,960 INFO L93 Difference]: Finished difference Result 60686 states and 226187 transitions. [2021-06-05 06:53:06,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 06:53:06,960 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:06,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:07,130 INFO L225 Difference]: With dead ends: 60686 [2021-06-05 06:53:07,131 INFO L226 Difference]: Without dead ends: 60646 [2021-06-05 06:53:07,131 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1158 ImplicationChecksByTransitivity, 699.9ms TimeCoverageRelationStatistics Valid=722, Invalid=2818, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:53:07,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60646 states. [2021-06-05 06:53:08,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60646 to 43335. [2021-06-05 06:53:08,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43335 states, 43334 states have (on average 3.8610790603221488) internal successors, (167316), 43334 states have internal predecessors, (167316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:08,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43335 states to 43335 states and 167316 transitions. [2021-06-05 06:53:08,427 INFO L78 Accepts]: Start accepts. Automaton has 43335 states and 167316 transitions. Word has length 28 [2021-06-05 06:53:08,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:08,427 INFO L482 AbstractCegarLoop]: Abstraction has 43335 states and 167316 transitions. [2021-06-05 06:53:08,427 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:08,428 INFO L276 IsEmpty]: Start isEmpty. Operand 43335 states and 167316 transitions. [2021-06-05 06:53:08,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:08,694 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:08,694 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:08,894 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4169,233 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:08,894 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:08,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:08,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1262992088, now seen corresponding path program 156 times [2021-06-05 06:53:08,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:08,895 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275528072] [2021-06-05 06:53:08,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:08,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:08,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275528072] [2021-06-05 06:53:08,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275528072] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:08,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77792928] [2021-06-05 06:53:08,931 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:08,953 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:53:08,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:53:08,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:53:08,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:09,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77792928] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:09,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:09,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:53:09,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445302188] [2021-06-05 06:53:09,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:53:09,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:09,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:53:09,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:53:09,051 INFO L87 Difference]: Start difference. First operand 43335 states and 167316 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:10,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:10,447 INFO L93 Difference]: Finished difference Result 59923 states and 223885 transitions. [2021-06-05 06:53:10,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-06-05 06:53:10,447 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:10,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:10,608 INFO L225 Difference]: With dead ends: 59923 [2021-06-05 06:53:10,608 INFO L226 Difference]: Without dead ends: 59923 [2021-06-05 06:53:10,609 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2488 ImplicationChecksByTransitivity, 788.2ms TimeCoverageRelationStatistics Valid=1250, Invalid=5392, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 06:53:10,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59923 states. [2021-06-05 06:53:11,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59923 to 44240. [2021-06-05 06:53:11,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44240 states, 44239 states have (on average 3.851511110106467) internal successors, (170387), 44239 states have internal predecessors, (170387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:12,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44240 states to 44240 states and 170387 transitions. [2021-06-05 06:53:12,088 INFO L78 Accepts]: Start accepts. Automaton has 44240 states and 170387 transitions. Word has length 28 [2021-06-05 06:53:12,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:12,088 INFO L482 AbstractCegarLoop]: Abstraction has 44240 states and 170387 transitions. [2021-06-05 06:53:12,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:12,088 INFO L276 IsEmpty]: Start isEmpty. Operand 44240 states and 170387 transitions. [2021-06-05 06:53:12,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:12,159 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:12,159 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:12,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4170,234 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:12,359 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:12,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:12,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1388936054, now seen corresponding path program 157 times [2021-06-05 06:53:12,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:12,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622701162] [2021-06-05 06:53:12,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:12,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:12,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622701162] [2021-06-05 06:53:12,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622701162] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:12,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167197164] [2021-06-05 06:53:12,397 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:12,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:53:12,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:12,511 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167197164] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:12,511 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:12,511 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:53:12,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706979052] [2021-06-05 06:53:12,511 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:53:12,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:12,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:53:12,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:53:12,512 INFO L87 Difference]: Start difference. First operand 44240 states and 170387 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:13,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:13,706 INFO L93 Difference]: Finished difference Result 59425 states and 222490 transitions. [2021-06-05 06:53:13,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 06:53:13,706 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:13,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:14,110 INFO L225 Difference]: With dead ends: 59425 [2021-06-05 06:53:14,111 INFO L226 Difference]: Without dead ends: 59417 [2021-06-05 06:53:14,111 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 641.4ms TimeCoverageRelationStatistics Valid=973, Invalid=3857, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:53:14,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59417 states. [2021-06-05 06:53:15,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59417 to 44164. [2021-06-05 06:53:15,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44164 states, 44163 states have (on average 3.8527953264044563) internal successors, (170151), 44163 states have internal predecessors, (170151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:15,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44164 states to 44164 states and 170151 transitions. [2021-06-05 06:53:15,419 INFO L78 Accepts]: Start accepts. Automaton has 44164 states and 170151 transitions. Word has length 28 [2021-06-05 06:53:15,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:15,419 INFO L482 AbstractCegarLoop]: Abstraction has 44164 states and 170151 transitions. [2021-06-05 06:53:15,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:15,419 INFO L276 IsEmpty]: Start isEmpty. Operand 44164 states and 170151 transitions. [2021-06-05 06:53:15,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:15,493 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:15,493 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:15,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 235 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4171 [2021-06-05 06:53:15,694 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:15,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:15,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1638574064, now seen corresponding path program 158 times [2021-06-05 06:53:15,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:15,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043787835] [2021-06-05 06:53:15,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:15,734 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:15,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:15,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043787835] [2021-06-05 06:53:15,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043787835] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:15,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645461264] [2021-06-05 06:53:15,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:15,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:53:15,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:53:15,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:53:15,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:15,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645461264] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:15,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:15,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:53:15,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21210468] [2021-06-05 06:53:15,839 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:53:15,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:15,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:53:15,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:53:15,839 INFO L87 Difference]: Start difference. First operand 44164 states and 170151 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:17,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:17,180 INFO L93 Difference]: Finished difference Result 58902 states and 221244 transitions. [2021-06-05 06:53:17,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 06:53:17,180 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:17,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:17,380 INFO L225 Difference]: With dead ends: 58902 [2021-06-05 06:53:17,380 INFO L226 Difference]: Without dead ends: 58878 [2021-06-05 06:53:17,380 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1248 ImplicationChecksByTransitivity, 546.9ms TimeCoverageRelationStatistics Valid=750, Invalid=3032, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:53:17,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58878 states. [2021-06-05 06:53:18,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58878 to 44150. [2021-06-05 06:53:18,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44150 states, 44149 states have (on average 3.8527712971981245) internal successors, (170096), 44149 states have internal predecessors, (170096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:18,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44150 states to 44150 states and 170096 transitions. [2021-06-05 06:53:18,780 INFO L78 Accepts]: Start accepts. Automaton has 44150 states and 170096 transitions. Word has length 28 [2021-06-05 06:53:18,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:18,780 INFO L482 AbstractCegarLoop]: Abstraction has 44150 states and 170096 transitions. [2021-06-05 06:53:18,780 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:18,780 INFO L276 IsEmpty]: Start isEmpty. Operand 44150 states and 170096 transitions. [2021-06-05 06:53:18,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:18,847 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:18,847 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:19,047 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4172,236 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:19,047 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:19,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:19,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1972807316, now seen corresponding path program 159 times [2021-06-05 06:53:19,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:19,048 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574146684] [2021-06-05 06:53:19,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:19,085 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:19,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574146684] [2021-06-05 06:53:19,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574146684] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:19,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524953881] [2021-06-05 06:53:19,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:19,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:53:19,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:53:19,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:53:19,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:19,180 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:19,180 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524953881] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:19,180 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:19,180 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 06:53:19,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452027011] [2021-06-05 06:53:19,180 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:53:19,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:19,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:53:19,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:53:19,180 INFO L87 Difference]: Start difference. First operand 44150 states and 170096 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:20,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:20,469 INFO L93 Difference]: Finished difference Result 58684 states and 220551 transitions. [2021-06-05 06:53:20,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 06:53:20,470 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:20,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:20,628 INFO L225 Difference]: With dead ends: 58684 [2021-06-05 06:53:20,628 INFO L226 Difference]: Without dead ends: 58644 [2021-06-05 06:53:20,629 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 500.6ms TimeCoverageRelationStatistics Valid=696, Invalid=2726, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 06:53:20,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58644 states. [2021-06-05 06:53:21,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58644 to 44499. [2021-06-05 06:53:21,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44499 states, 44498 states have (on average 3.854667625511259) internal successors, (171525), 44498 states have internal predecessors, (171525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:21,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44499 states to 44499 states and 171525 transitions. [2021-06-05 06:53:21,924 INFO L78 Accepts]: Start accepts. Automaton has 44499 states and 171525 transitions. Word has length 28 [2021-06-05 06:53:21,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:21,924 INFO L482 AbstractCegarLoop]: Abstraction has 44499 states and 171525 transitions. [2021-06-05 06:53:21,924 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:21,924 INFO L276 IsEmpty]: Start isEmpty. Operand 44499 states and 171525 transitions. [2021-06-05 06:53:21,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:21,992 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:21,992 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:22,192 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 237 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4173 [2021-06-05 06:53:22,193 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:22,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:22,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1825824890, now seen corresponding path program 160 times [2021-06-05 06:53:22,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:22,193 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731206586] [2021-06-05 06:53:22,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:22,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:22,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731206586] [2021-06-05 06:53:22,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731206586] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:22,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97945798] [2021-06-05 06:53:22,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:22,251 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:53:22,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:53:22,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:53:22,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:22,339 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97945798] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:22,339 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:22,339 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:53:22,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931477202] [2021-06-05 06:53:22,339 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:53:22,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:22,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:53:22,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:53:22,340 INFO L87 Difference]: Start difference. First operand 44499 states and 171525 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:23,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:23,767 INFO L93 Difference]: Finished difference Result 71216 states and 265043 transitions. [2021-06-05 06:53:23,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 06:53:23,768 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:23,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:23,968 INFO L225 Difference]: With dead ends: 71216 [2021-06-05 06:53:23,968 INFO L226 Difference]: Without dead ends: 71216 [2021-06-05 06:53:23,968 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 559.3ms TimeCoverageRelationStatistics Valid=901, Invalid=3131, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 06:53:24,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71216 states. [2021-06-05 06:53:25,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71216 to 45665. [2021-06-05 06:53:25,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45665 states, 45664 states have (on average 3.8691310441485633) internal successors, (176680), 45664 states have internal predecessors, (176680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:25,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45665 states to 45665 states and 176680 transitions. [2021-06-05 06:53:25,465 INFO L78 Accepts]: Start accepts. Automaton has 45665 states and 176680 transitions. Word has length 28 [2021-06-05 06:53:25,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:25,465 INFO L482 AbstractCegarLoop]: Abstraction has 45665 states and 176680 transitions. [2021-06-05 06:53:25,465 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 16 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:25,465 INFO L276 IsEmpty]: Start isEmpty. Operand 45665 states and 176680 transitions. [2021-06-05 06:53:25,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:25,534 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:25,534 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:25,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4174,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:25,734 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:25,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:25,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1151103012, now seen corresponding path program 161 times [2021-06-05 06:53:25,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:25,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215627923] [2021-06-05 06:53:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:25,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:25,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215627923] [2021-06-05 06:53:25,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215627923] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:25,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479582258] [2021-06-05 06:53:25,771 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:25,794 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:53:25,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:53:25,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:53:25,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:25,881 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:25,882 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479582258] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:25,882 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:25,882 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:53:25,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918320597] [2021-06-05 06:53:25,882 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:53:25,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:25,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:53:25,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:53:25,882 INFO L87 Difference]: Start difference. First operand 45665 states and 176680 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:27,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:27,189 INFO L93 Difference]: Finished difference Result 65301 states and 246293 transitions. [2021-06-05 06:53:27,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 06:53:27,189 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:27,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:27,373 INFO L225 Difference]: With dead ends: 65301 [2021-06-05 06:53:27,373 INFO L226 Difference]: Without dead ends: 65301 [2021-06-05 06:53:27,373 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 512.3ms TimeCoverageRelationStatistics Valid=781, Invalid=2641, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 06:53:27,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65301 states. [2021-06-05 06:53:28,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65301 to 45695. [2021-06-05 06:53:28,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45695 states, 45694 states have (on average 3.8689324637808027) internal successors, (176787), 45694 states have internal predecessors, (176787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:28,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45695 states to 45695 states and 176787 transitions. [2021-06-05 06:53:28,808 INFO L78 Accepts]: Start accepts. Automaton has 45695 states and 176787 transitions. Word has length 28 [2021-06-05 06:53:28,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:28,808 INFO L482 AbstractCegarLoop]: Abstraction has 45695 states and 176787 transitions. [2021-06-05 06:53:28,808 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:28,808 INFO L276 IsEmpty]: Start isEmpty. Operand 45695 states and 176787 transitions. [2021-06-05 06:53:28,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:28,882 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:28,882 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:29,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 239 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4175 [2021-06-05 06:53:29,082 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:29,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:29,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1490504108, now seen corresponding path program 162 times [2021-06-05 06:53:29,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:29,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201920374] [2021-06-05 06:53:29,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:29,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:29,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201920374] [2021-06-05 06:53:29,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201920374] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:29,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377947469] [2021-06-05 06:53:29,118 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:29,140 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:53:29,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:53:29,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:53:29,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:29,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377947469] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:29,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:29,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:53:29,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052385197] [2021-06-05 06:53:29,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:53:29,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:29,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:53:29,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:53:29,236 INFO L87 Difference]: Start difference. First operand 45695 states and 176787 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:29,652 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-06-05 06:53:31,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:31,025 INFO L93 Difference]: Finished difference Result 66159 states and 248729 transitions. [2021-06-05 06:53:31,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-05 06:53:31,025 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:31,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:31,199 INFO L225 Difference]: With dead ends: 66159 [2021-06-05 06:53:31,199 INFO L226 Difference]: Without dead ends: 66159 [2021-06-05 06:53:31,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2900 ImplicationChecksByTransitivity, 1122.1ms TimeCoverageRelationStatistics Valid=1557, Invalid=5925, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 06:53:31,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66159 states. [2021-06-05 06:53:32,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66159 to 45959. [2021-06-05 06:53:32,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45959 states, 45958 states have (on average 3.8653770834239958) internal successors, (177645), 45958 states have internal predecessors, (177645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:32,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45959 states to 45959 states and 177645 transitions. [2021-06-05 06:53:32,783 INFO L78 Accepts]: Start accepts. Automaton has 45959 states and 177645 transitions. Word has length 28 [2021-06-05 06:53:32,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:32,783 INFO L482 AbstractCegarLoop]: Abstraction has 45959 states and 177645 transitions. [2021-06-05 06:53:32,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:32,783 INFO L276 IsEmpty]: Start isEmpty. Operand 45959 states and 177645 transitions. [2021-06-05 06:53:32,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:32,857 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:32,857 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:33,057 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 240 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4176 [2021-06-05 06:53:33,058 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:33,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:33,058 INFO L82 PathProgramCache]: Analyzing trace with hash 152535046, now seen corresponding path program 163 times [2021-06-05 06:53:33,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:33,058 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121860774] [2021-06-05 06:53:33,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:33,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:33,095 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:33,095 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:33,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121860774] [2021-06-05 06:53:33,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121860774] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:33,095 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993999729] [2021-06-05 06:53:33,095 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:33,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:53:33,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:33,210 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:33,210 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993999729] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:33,210 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:33,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:53:33,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778226373] [2021-06-05 06:53:33,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:53:33,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:33,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:53:33,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:53:33,211 INFO L87 Difference]: Start difference. First operand 45959 states and 177645 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:34,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:34,541 INFO L93 Difference]: Finished difference Result 65371 states and 246494 transitions. [2021-06-05 06:53:34,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 06:53:34,541 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:34,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:34,984 INFO L225 Difference]: With dead ends: 65371 [2021-06-05 06:53:34,984 INFO L226 Difference]: Without dead ends: 65367 [2021-06-05 06:53:34,984 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1770 ImplicationChecksByTransitivity, 701.6ms TimeCoverageRelationStatistics Valid=1139, Invalid=3831, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 06:53:35,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65367 states. [2021-06-05 06:53:36,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65367 to 45595. [2021-06-05 06:53:36,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45595 states, 45594 states have (on average 3.8691275167785233) internal successors, (176409), 45594 states have internal predecessors, (176409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45595 states to 45595 states and 176409 transitions. [2021-06-05 06:53:36,351 INFO L78 Accepts]: Start accepts. Automaton has 45595 states and 176409 transitions. Word has length 28 [2021-06-05 06:53:36,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:36,351 INFO L482 AbstractCegarLoop]: Abstraction has 45595 states and 176409 transitions. [2021-06-05 06:53:36,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:36,351 INFO L276 IsEmpty]: Start isEmpty. Operand 45595 states and 176409 transitions. [2021-06-05 06:53:36,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:36,420 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:36,420 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:36,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 241 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4177 [2021-06-05 06:53:36,621 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:36,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:36,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1936993134, now seen corresponding path program 164 times [2021-06-05 06:53:36,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:36,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881480663] [2021-06-05 06:53:36,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:36,660 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:36,660 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:36,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881480663] [2021-06-05 06:53:36,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881480663] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:36,660 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739108320] [2021-06-05 06:53:36,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:36,682 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:53:36,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:53:36,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:53:36,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:36,782 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:36,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739108320] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:36,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:36,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:53:36,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134346226] [2021-06-05 06:53:36,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:53:36,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:36,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:53:36,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:53:36,783 INFO L87 Difference]: Start difference. First operand 45595 states and 176409 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:37,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:37,729 INFO L93 Difference]: Finished difference Result 59692 states and 226868 transitions. [2021-06-05 06:53:37,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:53:37,730 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:37,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:37,886 INFO L225 Difference]: With dead ends: 59692 [2021-06-05 06:53:37,887 INFO L226 Difference]: Without dead ends: 59692 [2021-06-05 06:53:37,887 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 467.4ms TimeCoverageRelationStatistics Valid=608, Invalid=2148, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 06:53:37,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59692 states. [2021-06-05 06:53:39,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59692 to 45611. [2021-06-05 06:53:39,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45611 states, 45610 states have (on average 3.8710151282613463) internal successors, (176557), 45610 states have internal predecessors, (176557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:39,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45611 states to 45611 states and 176557 transitions. [2021-06-05 06:53:39,499 INFO L78 Accepts]: Start accepts. Automaton has 45611 states and 176557 transitions. Word has length 28 [2021-06-05 06:53:39,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:39,499 INFO L482 AbstractCegarLoop]: Abstraction has 45611 states and 176557 transitions. [2021-06-05 06:53:39,499 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:39,499 INFO L276 IsEmpty]: Start isEmpty. Operand 45611 states and 176557 transitions. [2021-06-05 06:53:39,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:39,572 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:39,572 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:39,772 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 242 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4178 [2021-06-05 06:53:39,772 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:39,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:39,773 INFO L82 PathProgramCache]: Analyzing trace with hash -756673454, now seen corresponding path program 165 times [2021-06-05 06:53:39,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:39,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173964290] [2021-06-05 06:53:39,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:39,808 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:39,808 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:39,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173964290] [2021-06-05 06:53:39,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173964290] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:39,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747008367] [2021-06-05 06:53:39,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:39,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:53:39,831 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:53:39,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:53:39,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:39,908 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:39,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747008367] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:39,909 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:39,909 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:53:39,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884328408] [2021-06-05 06:53:39,909 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:53:39,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:39,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:53:39,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:53:39,909 INFO L87 Difference]: Start difference. First operand 45611 states and 176557 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:40,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:40,662 INFO L93 Difference]: Finished difference Result 59006 states and 224993 transitions. [2021-06-05 06:53:40,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:53:40,663 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:40,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:40,821 INFO L225 Difference]: With dead ends: 59006 [2021-06-05 06:53:40,821 INFO L226 Difference]: Without dead ends: 58994 [2021-06-05 06:53:40,821 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 337.5ms TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 06:53:40,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58994 states. [2021-06-05 06:53:41,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58994 to 45545. [2021-06-05 06:53:41,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45545 states, 45544 states have (on average 3.8721675742139468) internal successors, (176354), 45544 states have internal predecessors, (176354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:42,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45545 states to 45545 states and 176354 transitions. [2021-06-05 06:53:42,376 INFO L78 Accepts]: Start accepts. Automaton has 45545 states and 176354 transitions. Word has length 28 [2021-06-05 06:53:42,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:42,376 INFO L482 AbstractCegarLoop]: Abstraction has 45545 states and 176354 transitions. [2021-06-05 06:53:42,376 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:42,376 INFO L276 IsEmpty]: Start isEmpty. Operand 45545 states and 176354 transitions. [2021-06-05 06:53:42,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:42,457 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:42,458 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:42,658 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4179,243 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:42,658 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:42,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:42,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1537074702, now seen corresponding path program 166 times [2021-06-05 06:53:42,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:42,659 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229873828] [2021-06-05 06:53:42,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:42,700 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:42,700 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229873828] [2021-06-05 06:53:42,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229873828] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:42,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431625446] [2021-06-05 06:53:42,701 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:42,724 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:53:42,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:53:42,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:53:42,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:42,817 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:42,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431625446] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:42,817 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:42,817 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:53:42,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894115332] [2021-06-05 06:53:42,817 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:53:42,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:42,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:53:42,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:53:42,818 INFO L87 Difference]: Start difference. First operand 45545 states and 176354 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:43,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:43,484 INFO L93 Difference]: Finished difference Result 50032 states and 191152 transitions. [2021-06-05 06:53:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 06:53:43,484 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:43,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:43,620 INFO L225 Difference]: With dead ends: 50032 [2021-06-05 06:53:43,620 INFO L226 Difference]: Without dead ends: 50032 [2021-06-05 06:53:43,621 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 316.5ms TimeCoverageRelationStatistics Valid=323, Invalid=1159, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:53:43,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50032 states. [2021-06-05 06:53:44,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50032 to 45753. [2021-06-05 06:53:44,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45753 states, 45752 states have (on average 3.86968875677566) internal successors, (177046), 45752 states have internal predecessors, (177046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:44,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45753 states to 45753 states and 177046 transitions. [2021-06-05 06:53:44,800 INFO L78 Accepts]: Start accepts. Automaton has 45753 states and 177046 transitions. Word has length 28 [2021-06-05 06:53:44,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:44,800 INFO L482 AbstractCegarLoop]: Abstraction has 45753 states and 177046 transitions. [2021-06-05 06:53:44,800 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:44,800 INFO L276 IsEmpty]: Start isEmpty. Operand 45753 states and 177046 transitions. [2021-06-05 06:53:44,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:44,873 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:44,873 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:45,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4180,244 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:45,074 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:45,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:45,074 INFO L82 PathProgramCache]: Analyzing trace with hash 538506736, now seen corresponding path program 167 times [2021-06-05 06:53:45,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:45,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909553461] [2021-06-05 06:53:45,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:45,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:45,108 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:45,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:45,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909553461] [2021-06-05 06:53:45,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909553461] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:45,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386141747] [2021-06-05 06:53:45,108 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:45,157 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:53:45,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:53:45,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:53:45,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:45,235 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:45,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386141747] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:45,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:45,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:53:45,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981094855] [2021-06-05 06:53:45,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:53:45,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:45,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:53:45,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:53:45,236 INFO L87 Difference]: Start difference. First operand 45753 states and 177046 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:45,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:45,974 INFO L93 Difference]: Finished difference Result 49879 states and 190754 transitions. [2021-06-05 06:53:45,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:53:45,975 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:45,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:46,107 INFO L225 Difference]: With dead ends: 49879 [2021-06-05 06:53:46,107 INFO L226 Difference]: Without dead ends: 49875 [2021-06-05 06:53:46,107 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 235.4ms TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:53:46,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49875 states. [2021-06-05 06:53:47,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49875 to 45693. [2021-06-05 06:53:47,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45693 states, 45692 states have (on average 3.8705681519740875) internal successors, (176854), 45692 states have internal predecessors, (176854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:47,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45693 states to 45693 states and 176854 transitions. [2021-06-05 06:53:47,280 INFO L78 Accepts]: Start accepts. Automaton has 45693 states and 176854 transitions. Word has length 28 [2021-06-05 06:53:47,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:47,280 INFO L482 AbstractCegarLoop]: Abstraction has 45693 states and 176854 transitions. [2021-06-05 06:53:47,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:47,281 INFO L276 IsEmpty]: Start isEmpty. Operand 45693 states and 176854 transitions. [2021-06-05 06:53:47,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:47,350 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:47,350 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:47,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4181 [2021-06-05 06:53:47,551 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:47,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:47,551 INFO L82 PathProgramCache]: Analyzing trace with hash 508703680, now seen corresponding path program 78 times [2021-06-05 06:53:47,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:47,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348523984] [2021-06-05 06:53:47,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:47,587 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:47,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:47,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348523984] [2021-06-05 06:53:47,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348523984] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:47,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183746516] [2021-06-05 06:53:47,587 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:47,610 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:53:47,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:53:47,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:53:47,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:47,659 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:47,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183746516] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:47,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:47,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-05 06:53:47,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350322498] [2021-06-05 06:53:47,659 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:53:47,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:47,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:53:47,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:53:47,659 INFO L87 Difference]: Start difference. First operand 45693 states and 176854 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:48,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:48,187 INFO L93 Difference]: Finished difference Result 49934 states and 190867 transitions. [2021-06-05 06:53:48,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:53:48,188 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:48,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:48,317 INFO L225 Difference]: With dead ends: 49934 [2021-06-05 06:53:48,318 INFO L226 Difference]: Without dead ends: 49934 [2021-06-05 06:53:48,318 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 200.6ms TimeCoverageRelationStatistics Valid=275, Invalid=781, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:53:48,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49934 states. [2021-06-05 06:53:49,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49934 to 45797. [2021-06-05 06:53:49,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45797 states, 45796 states have (on average 3.8688531749497774) internal successors, (177178), 45796 states have internal predecessors, (177178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:49,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45797 states to 45797 states and 177178 transitions. [2021-06-05 06:53:49,617 INFO L78 Accepts]: Start accepts. Automaton has 45797 states and 177178 transitions. Word has length 28 [2021-06-05 06:53:49,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:49,617 INFO L482 AbstractCegarLoop]: Abstraction has 45797 states and 177178 transitions. [2021-06-05 06:53:49,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:49,617 INFO L276 IsEmpty]: Start isEmpty. Operand 45797 states and 177178 transitions. [2021-06-05 06:53:49,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:49,957 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:49,957 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:50,172 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4182,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:50,172 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:50,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:50,172 INFO L82 PathProgramCache]: Analyzing trace with hash -751583464, now seen corresponding path program 79 times [2021-06-05 06:53:50,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:50,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182100560] [2021-06-05 06:53:50,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:50,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:50,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182100560] [2021-06-05 06:53:50,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182100560] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:50,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317110515] [2021-06-05 06:53:50,209 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:50,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:53:50,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:50,315 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:50,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317110515] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:50,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:50,315 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-06-05 06:53:50,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825536893] [2021-06-05 06:53:50,315 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:53:50,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:50,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:53:50,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:53:50,316 INFO L87 Difference]: Start difference. First operand 45797 states and 177178 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:50,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:50,881 INFO L93 Difference]: Finished difference Result 56721 states and 216081 transitions. [2021-06-05 06:53:50,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:53:50,882 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:50,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:51,029 INFO L225 Difference]: With dead ends: 56721 [2021-06-05 06:53:51,029 INFO L226 Difference]: Without dead ends: 56631 [2021-06-05 06:53:51,030 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 248.4ms TimeCoverageRelationStatistics Valid=306, Invalid=954, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:53:51,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56631 states. [2021-06-05 06:53:52,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56631 to 45626. [2021-06-05 06:53:52,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45626 states, 45625 states have (on average 3.866717808219178) internal successors, (176419), 45625 states have internal predecessors, (176419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:52,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45626 states to 45626 states and 176419 transitions. [2021-06-05 06:53:52,216 INFO L78 Accepts]: Start accepts. Automaton has 45626 states and 176419 transitions. Word has length 28 [2021-06-05 06:53:52,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:52,216 INFO L482 AbstractCegarLoop]: Abstraction has 45626 states and 176419 transitions. [2021-06-05 06:53:52,216 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:52,216 INFO L276 IsEmpty]: Start isEmpty. Operand 45626 states and 176419 transitions. [2021-06-05 06:53:52,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:52,286 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:52,286 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:52,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 247 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4183 [2021-06-05 06:53:52,487 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:52,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:52,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1414052632, now seen corresponding path program 80 times [2021-06-05 06:53:52,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:52,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187894575] [2021-06-05 06:53:52,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:52,517 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:53:52,517 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:52,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187894575] [2021-06-05 06:53:52,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187894575] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:52,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645227243] [2021-06-05 06:53:52,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:52,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:53:52,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:53:52,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:53:52,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:52,584 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-05 06:53:52,584 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645227243] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:52,584 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:52,585 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-05 06:53:52,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334132306] [2021-06-05 06:53:52,585 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:53:52,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:52,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:53:52,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:53:52,585 INFO L87 Difference]: Start difference. First operand 45626 states and 176419 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:53,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:53,220 INFO L93 Difference]: Finished difference Result 50119 states and 191428 transitions. [2021-06-05 06:53:53,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:53:53,220 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:53,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:53,354 INFO L225 Difference]: With dead ends: 50119 [2021-06-05 06:53:53,354 INFO L226 Difference]: Without dead ends: 50107 [2021-06-05 06:53:53,355 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 133.3ms TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:53:53,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50107 states. [2021-06-05 06:53:54,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50107 to 45780. [2021-06-05 06:53:54,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45780 states, 45779 states have (on average 3.864523034579174) internal successors, (176914), 45779 states have internal predecessors, (176914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:54,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45780 states to 45780 states and 176914 transitions. [2021-06-05 06:53:54,625 INFO L78 Accepts]: Start accepts. Automaton has 45780 states and 176914 transitions. Word has length 28 [2021-06-05 06:53:54,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:54,625 INFO L482 AbstractCegarLoop]: Abstraction has 45780 states and 176914 transitions. [2021-06-05 06:53:54,625 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:54,625 INFO L276 IsEmpty]: Start isEmpty. Operand 45780 states and 176914 transitions. [2021-06-05 06:53:54,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:54,723 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:54,723 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:54,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4184,248 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:54,937 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:54,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:54,937 INFO L82 PathProgramCache]: Analyzing trace with hash 421559068, now seen corresponding path program 81 times [2021-06-05 06:53:54,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:54,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52515726] [2021-06-05 06:53:54,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:54,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:54,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52515726] [2021-06-05 06:53:54,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52515726] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:54,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883144205] [2021-06-05 06:53:54,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:54,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:53:54,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:53:55,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:53:55,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:55,044 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:55,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883144205] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:55,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:55,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-05 06:53:55,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695383432] [2021-06-05 06:53:55,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:53:55,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:55,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:53:55,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:53:55,045 INFO L87 Difference]: Start difference. First operand 45780 states and 176914 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:55,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:55,507 INFO L93 Difference]: Finished difference Result 50083 states and 191344 transitions. [2021-06-05 06:53:55,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:53:55,507 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:55,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:55,642 INFO L225 Difference]: With dead ends: 50083 [2021-06-05 06:53:55,642 INFO L226 Difference]: Without dead ends: 50063 [2021-06-05 06:53:55,643 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 154.9ms TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:53:55,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50063 states. [2021-06-05 06:53:56,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50063 to 45780. [2021-06-05 06:53:56,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45780 states, 45779 states have (on average 3.8644356582712596) internal successors, (176910), 45779 states have internal predecessors, (176910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:56,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45780 states to 45780 states and 176910 transitions. [2021-06-05 06:53:56,853 INFO L78 Accepts]: Start accepts. Automaton has 45780 states and 176910 transitions. Word has length 28 [2021-06-05 06:53:56,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:56,853 INFO L482 AbstractCegarLoop]: Abstraction has 45780 states and 176910 transitions. [2021-06-05 06:53:56,853 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:56,853 INFO L276 IsEmpty]: Start isEmpty. Operand 45780 states and 176910 transitions. [2021-06-05 06:53:56,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:56,922 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:56,922 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:57,123 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 249 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4185 [2021-06-05 06:53:57,123 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:57,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:57,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1989119940, now seen corresponding path program 168 times [2021-06-05 06:53:57,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:57,123 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346093789] [2021-06-05 06:53:57,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:57,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:57,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346093789] [2021-06-05 06:53:57,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346093789] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:57,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203526379] [2021-06-05 06:53:57,156 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:57,178 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:53:57,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:53:57,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:53:57,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:57,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:57,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203526379] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:57,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:57,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:53:57,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184682214] [2021-06-05 06:53:57,236 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:53:57,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:57,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:53:57,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:53:57,236 INFO L87 Difference]: Start difference. First operand 45780 states and 176910 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:57,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:53:57,897 INFO L93 Difference]: Finished difference Result 50741 states and 194475 transitions. [2021-06-05 06:53:57,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:53:57,897 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:53:57,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:53:58,029 INFO L225 Difference]: With dead ends: 50741 [2021-06-05 06:53:58,029 INFO L226 Difference]: Without dead ends: 50728 [2021-06-05 06:53:58,030 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 124.0ms TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:53:58,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50728 states. [2021-06-05 06:53:59,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50728 to 48513. [2021-06-05 06:53:59,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48513 states, 48512 states have (on average 3.873330310026385) internal successors, (187903), 48512 states have internal predecessors, (187903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:59,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48513 states to 48513 states and 187903 transitions. [2021-06-05 06:53:59,215 INFO L78 Accepts]: Start accepts. Automaton has 48513 states and 187903 transitions. Word has length 28 [2021-06-05 06:53:59,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:53:59,215 INFO L482 AbstractCegarLoop]: Abstraction has 48513 states and 187903 transitions. [2021-06-05 06:53:59,215 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:53:59,216 INFO L276 IsEmpty]: Start isEmpty. Operand 48513 states and 187903 transitions. [2021-06-05 06:53:59,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:53:59,291 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:53:59,291 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:53:59,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 250 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4186 [2021-06-05 06:53:59,492 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:53:59,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:53:59,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1306375610, now seen corresponding path program 169 times [2021-06-05 06:53:59,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:53:59,492 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710377062] [2021-06-05 06:53:59,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:53:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:59,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:53:59,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710377062] [2021-06-05 06:53:59,529 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710377062] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:59,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320343646] [2021-06-05 06:53:59,529 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:53:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:53:59,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:53:59,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:53:59,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:53:59,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320343646] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:53:59,614 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:53:59,614 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:53:59,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389942521] [2021-06-05 06:53:59,614 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:53:59,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:53:59,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:53:59,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:53:59,614 INFO L87 Difference]: Start difference. First operand 48513 states and 187903 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:54:00,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:54:00,105 INFO L93 Difference]: Finished difference Result 54090 states and 205931 transitions. [2021-06-05 06:54:00,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:54:00,105 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:54:00,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:54:00,242 INFO L225 Difference]: With dead ends: 54090 [2021-06-05 06:54:00,243 INFO L226 Difference]: Without dead ends: 54090 [2021-06-05 06:54:00,243 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 150.3ms TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:54:00,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54090 states. [2021-06-05 06:54:01,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54090 to 43050. [2021-06-05 06:54:01,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43050 states, 43049 states have (on average 3.8601593532950824) internal successors, (166176), 43049 states have internal predecessors, (166176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:54:01,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43050 states to 43050 states and 166176 transitions. [2021-06-05 06:54:01,459 INFO L78 Accepts]: Start accepts. Automaton has 43050 states and 166176 transitions. Word has length 28 [2021-06-05 06:54:01,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:54:01,459 INFO L482 AbstractCegarLoop]: Abstraction has 43050 states and 166176 transitions. [2021-06-05 06:54:01,459 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:54:01,459 INFO L276 IsEmpty]: Start isEmpty. Operand 43050 states and 166176 transitions. [2021-06-05 06:54:01,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:54:01,518 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:54:01,519 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:54:01,719 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 251 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4187 [2021-06-05 06:54:01,719 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:54:01,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:54:01,719 INFO L82 PathProgramCache]: Analyzing trace with hash 986257146, now seen corresponding path program 170 times [2021-06-05 06:54:01,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:54:01,719 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989748820] [2021-06-05 06:54:01,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:54:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:54:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:54:01,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:54:01,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989748820] [2021-06-05 06:54:01,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989748820] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:54:01,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967166634] [2021-06-05 06:54:01,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:54:01,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:54:01,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:54:01,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:54:01,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:54:02,113 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:54:02,113 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967166634] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:54:02,113 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:54:02,113 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:54:02,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071176903] [2021-06-05 06:54:02,113 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:54:02,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:54:02,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:54:02,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:54:02,114 INFO L87 Difference]: Start difference. First operand 43050 states and 166176 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:54:02,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:54:02,624 INFO L93 Difference]: Finished difference Result 47933 states and 182630 transitions. [2021-06-05 06:54:02,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:54:02,624 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:54:02,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:54:02,751 INFO L225 Difference]: With dead ends: 47933 [2021-06-05 06:54:02,751 INFO L226 Difference]: Without dead ends: 47933 [2021-06-05 06:54:02,752 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 196.0ms TimeCoverageRelationStatistics Valid=270, Invalid=722, Unknown=0, NotChecked=0, Total=992 [2021-06-05 06:54:02,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47933 states. [2021-06-05 06:54:03,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47933 to 43883. [2021-06-05 06:54:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43883 states, 43882 states have (on average 3.858848730686842) internal successors, (169334), 43882 states have internal predecessors, (169334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:54:03,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43883 states to 43883 states and 169334 transitions. [2021-06-05 06:54:03,862 INFO L78 Accepts]: Start accepts. Automaton has 43883 states and 169334 transitions. Word has length 28 [2021-06-05 06:54:03,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:54:03,862 INFO L482 AbstractCegarLoop]: Abstraction has 43883 states and 169334 transitions. [2021-06-05 06:54:03,862 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:54:03,862 INFO L276 IsEmpty]: Start isEmpty. Operand 43883 states and 169334 transitions. [2021-06-05 06:54:03,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:54:03,934 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:54:03,934 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:54:04,134 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4188 [2021-06-05 06:54:04,135 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:54:04,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:54:04,135 INFO L82 PathProgramCache]: Analyzing trace with hash -22913030, now seen corresponding path program 171 times [2021-06-05 06:54:04,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:54:04,135 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970996904] [2021-06-05 06:54:04,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:54:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:54:04,173 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:54:04,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:54:04,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970996904] [2021-06-05 06:54:04,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970996904] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:54:04,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604805071] [2021-06-05 06:54:04,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:54:04,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:54:04,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:54:04,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:54:04,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:54:04,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:54:04,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604805071] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:54:04,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:54:04,253 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 06:54:04,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712801297] [2021-06-05 06:54:04,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:54:04,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:54:04,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:54:04,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:54:04,253 INFO L87 Difference]: Start difference. First operand 43883 states and 169334 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:54:04,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:54:04,686 INFO L93 Difference]: Finished difference Result 45643 states and 175210 transitions. [2021-06-05 06:54:04,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:54:04,687 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:54:04,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:54:04,802 INFO L225 Difference]: With dead ends: 45643 [2021-06-05 06:54:04,802 INFO L226 Difference]: Without dead ends: 45643 [2021-06-05 06:54:04,803 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 133.5ms TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:54:04,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45643 states. [2021-06-05 06:54:05,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45643 to 43891. [2021-06-05 06:54:05,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43891 states, 43890 states have (on average 3.8586921850079743) internal successors, (169358), 43890 states have internal predecessors, (169358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:54:05,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43891 states to 43891 states and 169358 transitions. [2021-06-05 06:54:05,903 INFO L78 Accepts]: Start accepts. Automaton has 43891 states and 169358 transitions. Word has length 28 [2021-06-05 06:54:05,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:54:05,903 INFO L482 AbstractCegarLoop]: Abstraction has 43891 states and 169358 transitions. [2021-06-05 06:54:05,903 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:54:05,903 INFO L276 IsEmpty]: Start isEmpty. Operand 43891 states and 169358 transitions. [2021-06-05 06:54:05,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:54:05,975 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:54:05,976 INFO L521 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:54:06,177 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 253 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4189 [2021-06-05 06:54:06,178 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:54:06,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:54:06,181 INFO L82 PathProgramCache]: Analyzing trace with hash -120181494, now seen corresponding path program 172 times [2021-06-05 06:54:06,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:54:06,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638586261] [2021-06-05 06:54:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:54:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:54:06,216 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:54:06,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:54:06,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638586261] [2021-06-05 06:54:06,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638586261] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:54:06,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527070801] [2021-06-05 06:54:06,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:54:06,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:54:06,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:54:06,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:54:06,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:54:06,303 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:54:06,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527070801] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:54:06,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:54:06,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:54:06,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51478610] [2021-06-05 06:54:06,304 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:54:06,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:54:06,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:54:06,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:54:06,304 INFO L87 Difference]: Start difference. First operand 43891 states and 169358 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:54:06,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:54:06,981 INFO L93 Difference]: Finished difference Result 45363 states and 174288 transitions. [2021-06-05 06:54:06,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:54:06,982 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-06-05 06:54:06,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:54:07,107 INFO L225 Difference]: With dead ends: 45363 [2021-06-05 06:54:07,108 INFO L226 Difference]: Without dead ends: 45363 [2021-06-05 06:54:07,108 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 132.3ms TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:54:07,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45363 states. [2021-06-05 06:54:07,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45363 to 43785. [2021-06-05 06:54:07,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43785 states, 43784 states have (on average 3.858350082221816) internal successors, (168934), 43784 states have internal predecessors, (168934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:54:08,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43785 states to 43785 states and 168934 transitions. [2021-06-05 06:54:08,280 INFO L78 Accepts]: Start accepts. Automaton has 43785 states and 168934 transitions. Word has length 28 [2021-06-05 06:54:08,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:54:08,280 INFO L482 AbstractCegarLoop]: Abstraction has 43785 states and 168934 transitions. [2021-06-05 06:54:08,280 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:54:08,280 INFO L276 IsEmpty]: Start isEmpty. Operand 43785 states and 168934 transitions. [2021-06-05 06:54:08,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:54:08,347 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:54:08,347 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:54:08,552 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4190,254 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:54:08,553 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:54:08,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:54:08,553 INFO L82 PathProgramCache]: Analyzing trace with hash -915745990, now seen corresponding path program 173 times [2021-06-05 06:54:08,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:54:08,553 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056519576] [2021-06-05 06:54:08,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:54:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:54:08,987 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 [2021-06-05 06:54:09,127 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 52 [2021-06-05 06:54:09,282 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 45 [2021-06-05 06:54:09,427 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 42 [2021-06-05 06:54:09,501 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:54:09,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:54:09,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056519576] [2021-06-05 06:54:09,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056519576] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:54:09,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482138659] [2021-06-05 06:54:09,501 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:54:09,530 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:54:09,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:54:09,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 06:54:09,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:54:09,861 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-06-05 06:54:10,080 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 06:54:10,227 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 06:54:10,722 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2021-06-05 06:54:10,931 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 06:54:11,130 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-05 06:54:11,414 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 06:54:11,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:11,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:11,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:11,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:11,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:54:11,608 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:11,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:11,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:11,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:11,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:11,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:54:11,621 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:11,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:11,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:11,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:11,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:11,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:54:11,635 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:11,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:11,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:11,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:11,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:11,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:54:11,649 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:11,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:11,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:11,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:11,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:11,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:54:11,663 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:11,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:11,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:11,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:11,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:11,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:11,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:54:11,678 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:11,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:11,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:11,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:11,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:11,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:54:11,691 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:11,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:11,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:11,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:11,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:54:11,700 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:12,107 WARN L205 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 113 [2021-06-05 06:54:12,108 INFO L628 ElimStorePlain]: treesize reduction 98, result has 81.7 percent of original size [2021-06-05 06:54:12,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:12,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:12,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:12,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:12,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:54:12,119 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:12,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:12,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:12,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:12,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:12,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:54:12,132 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:12,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:12,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:12,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:12,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:12,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:54:12,143 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:12,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:12,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:12,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:12,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:12,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:54:12,154 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:12,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:12,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:12,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:12,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:12,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:54:12,164 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:12,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:12,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:12,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:12,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:12,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:54:12,174 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:12,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:12,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:12,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:12,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:12,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:54:12,185 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:12,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:12,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:12,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:12,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:54:12,192 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:12,299 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 06:54:12,299 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:54:12,305 INFO L550 ElimStorePlain]: Start of recursive call 1: 18 dim-0 vars, 2 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 06:54:12,306 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 20 variables, input treesize:725, output treesize:97 [2021-06-05 06:54:12,400 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:54:12,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482138659] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:54:12,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:54:12,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-06-05 06:54:12,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812603964] [2021-06-05 06:54:12,401 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 06:54:12,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:54:12,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 06:54:12,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:54:12,402 INFO L87 Difference]: Start difference. First operand 43785 states and 168934 transitions. Second operand has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:54:13,124 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2021-06-05 06:54:13,793 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 92 [2021-06-05 06:54:14,014 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 71 [2021-06-05 06:54:14,184 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 68 [2021-06-05 06:54:14,374 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 58 [2021-06-05 06:54:14,552 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2021-06-05 06:54:15,078 WARN L205 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 107 [2021-06-05 06:54:15,415 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 94 [2021-06-05 06:54:16,442 WARN L205 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 133 [2021-06-05 06:54:17,023 WARN L205 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 92 [2021-06-05 06:54:17,181 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-06-05 06:54:18,312 WARN L205 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 117 [2021-06-05 06:54:19,067 WARN L205 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 136 [2021-06-05 06:54:19,703 WARN L205 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 112 [2021-06-05 06:54:20,360 WARN L205 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 138 [2021-06-05 06:54:21,094 WARN L205 SmtUtils]: Spent 555.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 136 [2021-06-05 06:54:21,265 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2021-06-05 06:54:22,031 WARN L205 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 144 [2021-06-05 06:54:22,302 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2021-06-05 06:54:23,065 WARN L205 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 142 [2021-06-05 06:54:23,374 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2021-06-05 06:54:23,714 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2021-06-05 06:54:23,934 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2021-06-05 06:54:24,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:54:24,433 INFO L93 Difference]: Finished difference Result 51109 states and 190238 transitions. [2021-06-05 06:54:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:54:24,434 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 06:54:24,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:54:24,554 INFO L225 Difference]: With dead ends: 51109 [2021-06-05 06:54:24,554 INFO L226 Difference]: Without dead ends: 51049 [2021-06-05 06:54:24,554 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 12800.6ms TimeCoverageRelationStatistics Valid=557, Invalid=3103, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 06:54:24,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51049 states. [2021-06-05 06:54:25,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51049 to 43920. [2021-06-05 06:54:25,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43920 states, 43919 states have (on average 3.8575331860925797) internal successors, (169419), 43919 states have internal predecessors, (169419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:54:25,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43920 states to 43920 states and 169419 transitions. [2021-06-05 06:54:25,566 INFO L78 Accepts]: Start accepts. Automaton has 43920 states and 169419 transitions. Word has length 30 [2021-06-05 06:54:25,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:54:25,566 INFO L482 AbstractCegarLoop]: Abstraction has 43920 states and 169419 transitions. [2021-06-05 06:54:25,566 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:54:25,566 INFO L276 IsEmpty]: Start isEmpty. Operand 43920 states and 169419 transitions. [2021-06-05 06:54:25,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:54:25,637 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:54:25,637 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:54:25,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4191,255 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:54:25,837 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:54:25,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:54:25,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1350823290, now seen corresponding path program 174 times [2021-06-05 06:54:25,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:54:25,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97876591] [2021-06-05 06:54:25,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:54:25,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:54:26,210 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-06-05 06:54:26,375 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2021-06-05 06:54:26,653 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2021-06-05 06:54:26,838 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:54:26,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:54:26,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97876591] [2021-06-05 06:54:26,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97876591] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:54:26,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971493685] [2021-06-05 06:54:26,838 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:54:26,872 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:54:26,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:54:26,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 06:54:26,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:54:27,398 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-06-05 06:54:27,681 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-05 06:54:28,372 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 134 [2021-06-05 06:54:28,729 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2021-06-05 06:54:29,696 WARN L205 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 181 [2021-06-05 06:54:29,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:29,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:29,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:29,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:29,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:29,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:29,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:29,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:29,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 19 [2021-06-05 06:54:29,957 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:29,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:29,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:29,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:29,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:29,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:29,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:29,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:54:29,976 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:30,737 WARN L205 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 217 [2021-06-05 06:54:30,738 INFO L628 ElimStorePlain]: treesize reduction 665, result has 42.2 percent of original size [2021-06-05 06:54:30,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:30,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:30,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:30,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:30,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:54:30,751 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:30,951 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-06-05 06:54:30,951 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:54:30,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:30,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:30,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:30,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:30,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:30,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:30,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:54:30,969 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:31,170 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2021-06-05 06:54:31,170 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:54:31,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:31,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:31,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:31,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:31,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:31,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:31,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 22 [2021-06-05 06:54:31,183 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:31,365 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2021-06-05 06:54:31,366 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:54:31,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:31,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:31,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:31,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:31,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:31,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:31,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:54:31,379 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:31,548 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2021-06-05 06:54:31,548 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:54:31,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:31,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:31,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:31,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:31,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:31,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:31,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-06-05 06:54:31,561 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:31,725 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2021-06-05 06:54:31,725 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:54:31,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:31,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:31,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:54:31,736 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:31,888 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-06-05 06:54:31,888 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:54:31,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:31,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:31,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:31,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:31,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:31,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:31,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:54:31,901 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:32,040 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2021-06-05 06:54:32,041 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:54:32,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:32,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:32,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:32,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:32,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:32,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:32,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:32,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:54:32,053 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:32,183 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-06-05 06:54:32,183 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:54:32,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:32,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:32,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 06:54:32,193 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:32,317 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-06-05 06:54:32,318 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:54:32,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:32,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:32,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:32,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:32,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:32,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:54:32,329 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:32,447 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 06:54:32,447 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:54:32,454 INFO L550 ElimStorePlain]: Start of recursive call 1: 33 dim-0 vars, 11 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 06:54:32,454 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 44 variables, input treesize:1231, output treesize:100 [2021-06-05 06:54:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:54:32,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971493685] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:54:32,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:54:32,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-05 06:54:32,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219681537] [2021-06-05 06:54:32,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:54:32,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:54:32,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:54:32,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:54:32,553 INFO L87 Difference]: Start difference. First operand 43920 states and 169419 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:54:32,717 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 35 [2021-06-05 06:54:33,011 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 52 [2021-06-05 06:54:33,347 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 110 [2021-06-05 06:54:33,495 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2021-06-05 06:54:34,521 WARN L205 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 128 [2021-06-05 06:54:35,034 WARN L205 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 86 [2021-06-05 06:54:35,286 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 73 [2021-06-05 06:54:35,633 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 86 [2021-06-05 06:54:36,994 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 174 DAG size of output: 161 [2021-06-05 06:54:38,135 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 184 DAG size of output: 148 [2021-06-05 06:54:38,372 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2021-06-05 06:54:38,571 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-06-05 06:54:40,491 WARN L205 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 215 DAG size of output: 181 [2021-06-05 06:54:40,954 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 146 [2021-06-05 06:54:41,524 WARN L205 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 222 DAG size of output: 147 [2021-06-05 06:54:41,899 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 72 [2021-06-05 06:54:42,289 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2021-06-05 06:54:44,043 WARN L205 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 251 DAG size of output: 213 [2021-06-05 06:54:44,259 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 66 [2021-06-05 06:54:44,426 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2021-06-05 06:54:44,776 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 63 [2021-06-05 06:54:45,034 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 56 [2021-06-05 06:54:45,362 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-06-05 06:54:45,623 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 50 [2021-06-05 06:54:46,161 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 61 [2021-06-05 06:54:46,613 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 54 [2021-06-05 06:54:47,130 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 57 [2021-06-05 06:54:47,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:54:47,260 INFO L93 Difference]: Finished difference Result 51275 states and 190720 transitions. [2021-06-05 06:54:47,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 06:54:47,261 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 06:54:47,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:54:47,390 INFO L225 Difference]: With dead ends: 51275 [2021-06-05 06:54:47,390 INFO L226 Difference]: Without dead ends: 51176 [2021-06-05 06:54:47,391 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 16255.1ms TimeCoverageRelationStatistics Valid=600, Invalid=2706, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 06:54:47,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51176 states. [2021-06-05 06:54:48,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51176 to 43931. [2021-06-05 06:54:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43931 states, 43930 states have (on average 3.857546096061917) internal successors, (169462), 43930 states have internal predecessors, (169462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:54:48,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43931 states to 43931 states and 169462 transitions. [2021-06-05 06:54:48,479 INFO L78 Accepts]: Start accepts. Automaton has 43931 states and 169462 transitions. Word has length 30 [2021-06-05 06:54:48,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:54:48,479 INFO L482 AbstractCegarLoop]: Abstraction has 43931 states and 169462 transitions. [2021-06-05 06:54:48,479 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:54:48,479 INFO L276 IsEmpty]: Start isEmpty. Operand 43931 states and 169462 transitions. [2021-06-05 06:54:48,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:54:48,556 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:54:48,556 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:54:48,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4214,256 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:54:48,769 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:54:48,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:54:48,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1352714698, now seen corresponding path program 175 times [2021-06-05 06:54:48,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:54:48,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517199200] [2021-06-05 06:54:48,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:54:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:54:48,992 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 54 [2021-06-05 06:54:49,229 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 112 [2021-06-05 06:54:49,505 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 49 [2021-06-05 06:54:49,830 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 117 [2021-06-05 06:54:50,106 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 54 [2021-06-05 06:54:50,460 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 158 [2021-06-05 06:54:51,092 WARN L205 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 76 [2021-06-05 06:54:51,284 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2021-06-05 06:54:51,460 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2021-06-05 06:54:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:54:51,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:54:51,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517199200] [2021-06-05 06:54:51,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517199200] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:54:51,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741714482] [2021-06-05 06:54:51,601 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:54:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:54:51,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 06:54:51,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:54:52,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,753 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-06-05 06:54:52,758 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:52,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-05 06:54:52,772 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:52,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,782 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2021-06-05 06:54:52,787 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:52,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 06:54:52,801 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:52,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-05 06:54:52,816 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:52,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,823 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 28 [2021-06-05 06:54:52,830 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:52,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:54:52,845 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:52,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-06-05 06:54:52,859 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:52,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:54:52,877 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:52,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2021-06-05 06:54:52,890 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:52,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,898 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:54:52,903 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:52,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:54:52,919 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:52,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:54:52,932 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:52,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,940 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:54:52,946 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:52,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-05 06:54:52,961 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:52,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:54:52,974 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:52,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:54:52,988 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:52,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:52,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:52,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:54:53,003 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:54:53,017 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:54:53,031 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:54:53,045 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,053 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-05 06:54:53,059 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2021-06-05 06:54:53,073 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:54:53,087 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:54:53,101 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 06:54:53,115 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2021-06-05 06:54:53,129 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 06:54:53,144 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 06:54:53,158 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:54:53,171 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:54:53,186 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:54:53,200 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:54:53,214 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:54:53,228 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:54:53,242 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:54:53,256 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:54:53,270 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 06:54:53,284 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:54:53,299 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 06:54:53,313 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:54:53,328 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,345 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-06-05 06:54:53,353 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:54:53,370 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-05 06:54:53,387 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:54:53,404 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:54:53,420 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:54:53,436 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-06-05 06:54:53,453 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:54:53,469 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 06:54:53,484 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 25 [2021-06-05 06:54:53,506 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 06:54:53,520 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:54:53,536 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 25 [2021-06-05 06:54:53,550 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:54:53,565 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:54:53,580 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-06-05 06:54:53,594 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:54:53,609 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:54:53,623 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 06:54:53,637 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:54:53,649 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:54:53,662 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:54:53,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:54:53,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:54:53,681 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 06:54:53,777 INFO L628 ElimStorePlain]: treesize reduction 206, result has 26.7 percent of original size [2021-06-05 06:54:53,778 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:54:53,779 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3472, output treesize:51 [2021-06-05 06:54:53,836 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:54:53,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741714482] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:54:53,836 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:54:53,836 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-06-05 06:54:53,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260506752] [2021-06-05 06:54:53,837 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:54:53,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:54:53,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:54:53,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:54:53,837 INFO L87 Difference]: Start difference. First operand 43931 states and 169462 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:54:54,416 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 70 [2021-06-05 06:54:54,809 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 71 [2021-06-05 06:54:55,213 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 68 [2021-06-05 06:54:55,635 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 71 [2021-06-05 06:54:56,015 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 94 [2021-06-05 06:54:56,281 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 82 [2021-06-05 06:54:56,457 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-05 06:54:56,664 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 74 [2021-06-05 06:54:57,170 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 69 [2021-06-05 06:54:57,596 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 92 [2021-06-05 06:54:57,766 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 67 [2021-06-05 06:54:58,124 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 80 [2021-06-05 06:54:58,381 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 85 [2021-06-05 06:54:58,559 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 66 [2021-06-05 06:54:58,877 WARN L205 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 72 [2021-06-05 06:54:59,077 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 75 [2021-06-05 06:54:59,310 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 77 [2021-06-05 06:54:59,865 WARN L205 SmtUtils]: Spent 393.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 109 [2021-06-05 06:55:00,267 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2021-06-05 06:55:00,515 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 67 [2021-06-05 06:55:00,692 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2021-06-05 06:55:00,882 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 06:55:01,193 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 73 [2021-06-05 06:55:01,401 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 71 [2021-06-05 06:55:01,626 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 78 [2021-06-05 06:55:02,173 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 95 [2021-06-05 06:55:02,452 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 83 [2021-06-05 06:55:02,696 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 74 [2021-06-05 06:55:03,046 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2021-06-05 06:55:03,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:55:03,372 INFO L93 Difference]: Finished difference Result 55765 states and 208985 transitions. [2021-06-05 06:55:03,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 06:55:03,373 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 06:55:03,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:55:03,531 INFO L225 Difference]: With dead ends: 55765 [2021-06-05 06:55:03,532 INFO L226 Difference]: Without dead ends: 55735 [2021-06-05 06:55:03,532 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 10295.5ms TimeCoverageRelationStatistics Valid=534, Invalid=3126, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 06:55:03,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55735 states. [2021-06-05 06:55:04,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55735 to 43970. [2021-06-05 06:55:04,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43970 states, 43969 states have (on average 3.8572630717096135) internal successors, (169600), 43969 states have internal predecessors, (169600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:55:04,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43970 states to 43970 states and 169600 transitions. [2021-06-05 06:55:04,847 INFO L78 Accepts]: Start accepts. Automaton has 43970 states and 169600 transitions. Word has length 30 [2021-06-05 06:55:04,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:55:04,847 INFO L482 AbstractCegarLoop]: Abstraction has 43970 states and 169600 transitions. [2021-06-05 06:55:04,847 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:55:04,847 INFO L276 IsEmpty]: Start isEmpty. Operand 43970 states and 169600 transitions. [2021-06-05 06:55:04,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:55:04,925 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:55:04,925 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:55:05,126 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4267,257 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:55:05,126 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:55:05,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:55:05,126 INFO L82 PathProgramCache]: Analyzing trace with hash -547667522, now seen corresponding path program 176 times [2021-06-05 06:55:05,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:55:05,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966542097] [2021-06-05 06:55:05,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:55:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:55:05,365 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2021-06-05 06:55:05,563 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-06-05 06:55:05,745 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2021-06-05 06:55:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:55:06,004 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:55:06,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966542097] [2021-06-05 06:55:06,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966542097] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:55:06,004 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709996351] [2021-06-05 06:55:06,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:55:06,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:55:06,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:55:06,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 06:55:06,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:55:06,388 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-05 06:55:06,608 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-05 06:55:07,155 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 106 [2021-06-05 06:55:07,711 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-06-05 06:55:08,295 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:55:08,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 54 [2021-06-05 06:55:08,298 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:08,738 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 342 [2021-06-05 06:55:08,738 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:08,807 INFO L354 Elim1Store]: treesize reduction 20, result has 51.2 percent of original size [2021-06-05 06:55:08,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 39 [2021-06-05 06:55:08,809 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:09,253 WARN L205 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2021-06-05 06:55:09,253 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:09,317 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:55:09,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51 [2021-06-05 06:55:09,328 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:10,196 WARN L205 SmtUtils]: Spent 866.00 ms on a formula simplification. DAG size of input: 347 DAG size of output: 337 [2021-06-05 06:55:10,196 INFO L628 ElimStorePlain]: treesize reduction 29, result has 96.7 percent of original size [2021-06-05 06:55:10,265 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 06:55:10,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 55 [2021-06-05 06:55:10,285 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:11,122 WARN L205 SmtUtils]: Spent 835.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 329 [2021-06-05 06:55:11,122 INFO L628 ElimStorePlain]: treesize reduction 9, result has 98.9 percent of original size [2021-06-05 06:55:11,175 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:11,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 53 [2021-06-05 06:55:11,188 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:11,586 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 320 [2021-06-05 06:55:11,586 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:11,650 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:55:11,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 44 [2021-06-05 06:55:11,656 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:12,053 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 316 [2021-06-05 06:55:12,054 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:12,116 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:55:12,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 43 [2021-06-05 06:55:12,120 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:12,518 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2021-06-05 06:55:12,519 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:12,587 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 06:55:12,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 55 [2021-06-05 06:55:12,602 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:13,386 WARN L205 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 310 DAG size of output: 305 [2021-06-05 06:55:13,387 INFO L628 ElimStorePlain]: treesize reduction 9, result has 98.8 percent of original size [2021-06-05 06:55:13,460 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 06:55:13,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 58 [2021-06-05 06:55:13,531 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:14,326 WARN L205 SmtUtils]: Spent 794.00 ms on a formula simplification. DAG size of input: 311 DAG size of output: 302 [2021-06-05 06:55:14,326 INFO L628 ElimStorePlain]: treesize reduction 24, result has 96.9 percent of original size [2021-06-05 06:55:14,371 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:14,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 62 [2021-06-05 06:55:14,382 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:15,202 WARN L205 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 313 DAG size of output: 301 [2021-06-05 06:55:15,203 INFO L628 ElimStorePlain]: treesize reduction 44, result has 94.5 percent of original size [2021-06-05 06:55:15,259 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:55:15,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 43 [2021-06-05 06:55:15,263 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:15,639 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2021-06-05 06:55:15,640 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:15,697 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:55:15,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 50 [2021-06-05 06:55:15,699 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:16,084 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2021-06-05 06:55:16,084 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:16,129 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:16,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 62 [2021-06-05 06:55:16,141 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:16,939 WARN L205 SmtUtils]: Spent 797.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 294 [2021-06-05 06:55:16,940 INFO L628 ElimStorePlain]: treesize reduction 25, result has 96.7 percent of original size [2021-06-05 06:55:17,002 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:55:17,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 54 [2021-06-05 06:55:17,004 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:17,385 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2021-06-05 06:55:17,385 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:17,435 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:55:17,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 43 [2021-06-05 06:55:17,437 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:17,835 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 295 [2021-06-05 06:55:17,835 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:17,895 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:55:17,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 44 [2021-06-05 06:55:17,900 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:18,276 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 291 [2021-06-05 06:55:18,277 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:18,390 INFO L550 ElimStorePlain]: Start of recursive call 1: 32 dim-0 vars, 16 dim-1 vars, End of recursive call: and 16 xjuncts. [2021-06-05 06:55:18,390 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 48 variables, input treesize:877, output treesize:1290 [2021-06-05 06:55:18,865 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 66 [2021-06-05 06:55:19,008 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:55:19,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709996351] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:55:19,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:55:19,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2021-06-05 06:55:19,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956914980] [2021-06-05 06:55:19,008 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 06:55:19,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:55:19,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 06:55:19,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2021-06-05 06:55:19,008 INFO L87 Difference]: Start difference. First operand 43970 states and 169600 transitions. Second operand has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:55:19,544 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 54 [2021-06-05 06:55:19,846 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 90 [2021-06-05 06:55:20,351 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 73 [2021-06-05 06:55:20,870 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 73 [2021-06-05 06:55:21,177 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 69 [2021-06-05 06:55:21,579 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 90 [2021-06-05 06:55:21,865 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2021-06-05 06:55:22,475 WARN L205 SmtUtils]: Spent 528.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 109 [2021-06-05 06:55:22,797 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 69 [2021-06-05 06:55:22,955 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2021-06-05 06:55:23,173 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 73 [2021-06-05 06:55:23,332 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2021-06-05 06:55:24,051 WARN L205 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 164 [2021-06-05 06:55:24,943 WARN L205 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 93 [2021-06-05 06:55:25,225 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 82 [2021-06-05 06:55:25,410 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2021-06-05 06:55:25,643 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 66 [2021-06-05 06:55:26,732 WARN L205 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 151 [2021-06-05 06:55:26,948 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 47 [2021-06-05 06:55:27,259 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2021-06-05 06:55:28,341 WARN L205 SmtUtils]: Spent 976.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 156 [2021-06-05 06:55:28,612 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 64 [2021-06-05 06:55:29,926 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 235 DAG size of output: 160 [2021-06-05 06:55:31,013 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 199 DAG size of output: 147 [2021-06-05 06:55:31,825 WARN L205 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 127 [2021-06-05 06:55:32,101 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2021-06-05 06:55:33,499 WARN L205 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 150 DAG size of output: 144 [2021-06-05 06:55:34,286 WARN L205 SmtUtils]: Spent 719.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 119 [2021-06-05 06:55:34,900 WARN L205 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 117 [2021-06-05 06:55:36,050 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 209 DAG size of output: 176 [2021-06-05 06:55:36,310 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 06:55:36,540 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 46 [2021-06-05 06:55:37,228 WARN L205 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 115 [2021-06-05 06:55:37,586 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 75 [2021-06-05 06:55:37,888 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 49 [2021-06-05 06:55:38,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:55:38,081 INFO L93 Difference]: Finished difference Result 53172 states and 196612 transitions. [2021-06-05 06:55:38,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 06:55:38,082 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 06:55:38,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:55:38,218 INFO L225 Difference]: With dead ends: 53172 [2021-06-05 06:55:38,219 INFO L226 Difference]: Without dead ends: 53142 [2021-06-05 06:55:38,219 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 19970.6ms TimeCoverageRelationStatistics Valid=681, Invalid=3875, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 06:55:38,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53142 states. [2021-06-05 06:55:39,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53142 to 43998. [2021-06-05 06:55:39,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43998 states, 43997 states have (on average 3.8568766052230834) internal successors, (169691), 43997 states have internal predecessors, (169691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:55:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43998 states to 43998 states and 169691 transitions. [2021-06-05 06:55:39,350 INFO L78 Accepts]: Start accepts. Automaton has 43998 states and 169691 transitions. Word has length 30 [2021-06-05 06:55:39,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:55:39,350 INFO L482 AbstractCegarLoop]: Abstraction has 43998 states and 169691 transitions. [2021-06-05 06:55:39,350 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:55:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 43998 states and 169691 transitions. [2021-06-05 06:55:39,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:55:39,422 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:55:39,422 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:55:39,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4498,258 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:55:39,623 INFO L430 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:55:39,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:55:39,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1002714042, now seen corresponding path program 177 times [2021-06-05 06:55:39,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:55:39,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251887485] [2021-06-05 06:55:39,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:55:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:55:40,025 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2021-06-05 06:55:40,221 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2021-06-05 06:55:40,407 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2021-06-05 06:55:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:55:40,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:55:40,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251887485] [2021-06-05 06:55:40,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251887485] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:55:40,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37784295] [2021-06-05 06:55:40,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:55:40,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:55:40,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:55:40,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-05 06:55:40,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:55:41,008 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-05 06:55:41,231 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-05 06:55:41,549 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-05 06:55:42,038 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 106 [2021-06-05 06:55:42,666 WARN L205 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-05 06:55:43,195 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 191 [2021-06-05 06:55:43,627 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2021-06-05 06:55:43,945 INFO L446 ElimStorePlain]: Different costs {6=[v_prenex_635, v_prenex_636, v_prenex_637, v_prenex_642], 9=[A, v_prenex_638, v_prenex_639, v_prenex_640, v_prenex_641, v_prenex_634]} [2021-06-05 06:55:43,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:44,016 INFO L354 Elim1Store]: treesize reduction 4, result has 91.5 percent of original size [2021-06-05 06:55:44,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 64 [2021-06-05 06:55:44,024 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:44,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:44,086 INFO L354 Elim1Store]: treesize reduction 4, result has 91.5 percent of original size [2021-06-05 06:55:44,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 61 [2021-06-05 06:55:44,104 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:45,688 WARN L205 SmtUtils]: Spent 1.58 s on a formula simplification. DAG size of input: 255 DAG size of output: 243 [2021-06-05 06:55:45,689 INFO L628 ElimStorePlain]: treesize reduction 59, result has 95.2 percent of original size [2021-06-05 06:55:45,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:45,754 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-05 06:55:45,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 49 [2021-06-05 06:55:45,757 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:45,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:45,819 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 06:55:45,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 50 [2021-06-05 06:55:45,824 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:46,606 WARN L205 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2021-06-05 06:55:46,606 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:46,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:46,678 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 06:55:46,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 50 [2021-06-05 06:55:46,684 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:46,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:46,733 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:46,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 59 [2021-06-05 06:55:46,760 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:47,596 WARN L205 SmtUtils]: Spent 835.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2021-06-05 06:55:47,596 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:47,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:47,658 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-05 06:55:47,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 49 [2021-06-05 06:55:47,662 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:47,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:47,719 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 06:55:47,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 56 [2021-06-05 06:55:47,720 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:48,470 WARN L205 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2021-06-05 06:55:48,470 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:48,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:48,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:55:48,502 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:55:48,541 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-05 06:55:48,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 46 treesize of output 52 [2021-06-05 06:55:48,543 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:48,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:48,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:55:48,609 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 06:55:48,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 56 [2021-06-05 06:55:48,613 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:50,068 WARN L205 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 237 DAG size of output: 236 [2021-06-05 06:55:50,069 INFO L628 ElimStorePlain]: treesize reduction 11, result has 99.0 percent of original size [2021-06-05 06:55:50,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:50,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:55:50,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:55:50,139 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 06:55:50,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 37 treesize of output 53 [2021-06-05 06:55:50,145 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:50,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:50,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:55:50,201 INFO L354 Elim1Store]: treesize reduction 16, result has 66.0 percent of original size [2021-06-05 06:55:50,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 49 [2021-06-05 06:55:50,202 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:51,574 WARN L205 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 235 DAG size of output: 234 [2021-06-05 06:55:51,575 INFO L628 ElimStorePlain]: treesize reduction 11, result has 99.0 percent of original size [2021-06-05 06:55:51,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:51,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:55:51,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:55:51,635 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:51,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 68 [2021-06-05 06:55:51,651 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:51,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:51,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:55:51,713 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 06:55:51,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 46 treesize of output 56 [2021-06-05 06:55:51,719 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:53,077 WARN L205 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 245 DAG size of output: 228 [2021-06-05 06:55:53,077 INFO L628 ElimStorePlain]: treesize reduction 108, result has 90.6 percent of original size [2021-06-05 06:55:53,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:53,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:55:53,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:55:53,146 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 06:55:53,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 46 treesize of output 56 [2021-06-05 06:55:53,148 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:53,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:53,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:55:53,205 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 06:55:53,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 56 [2021-06-05 06:55:53,209 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:54,472 WARN L205 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 224 DAG size of output: 222 [2021-06-05 06:55:54,473 INFO L628 ElimStorePlain]: treesize reduction 10, result has 99.0 percent of original size [2021-06-05 06:55:54,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:54,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:55:54,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:55:54,546 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 06:55:54,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 46 treesize of output 56 [2021-06-05 06:55:54,549 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:54,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:54,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:55:54,597 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:54,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 44 treesize of output 68 [2021-06-05 06:55:54,611 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:55,818 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 225 DAG size of output: 212 [2021-06-05 06:55:55,819 INFO L628 ElimStorePlain]: treesize reduction 65, result has 93.7 percent of original size [2021-06-05 06:55:55,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:55,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:55:55,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:55:55,878 INFO L354 Elim1Store]: treesize reduction 12, result has 74.5 percent of original size [2021-06-05 06:55:55,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 53 [2021-06-05 06:55:55,884 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:55,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:55:55,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:55:55,924 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:55:55,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 37 treesize of output 65 [2021-06-05 06:55:55,947 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 06:55:57,087 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 214 DAG size of output: 201 [2021-06-05 06:55:57,088 INFO L628 ElimStorePlain]: treesize reduction 67, result has 93.2 percent of original size [2021-06-05 06:55:57,161 INFO L550 ElimStorePlain]: Start of recursive call 1: 20 dim-0 vars, 10 dim-1 vars, End of recursive call: and 20 xjuncts. [2021-06-05 06:55:57,161 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 30 variables, input treesize:1225, output treesize:1279 [2021-06-05 06:55:57,604 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 54 [2021-06-05 06:55:57,719 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:55:57,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37784295] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:55:57,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:55:57,719 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 26 [2021-06-05 06:55:57,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768225341] [2021-06-05 06:55:57,719 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-05 06:55:57,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:55:57,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-05 06:55:57,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=570, Unknown=0, NotChecked=0, Total=650 [2021-06-05 06:55:57,720 INFO L87 Difference]: Start difference. First operand 43998 states and 169691 transitions. Second operand has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:55:58,399 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 39 [2021-06-05 06:55:59,023 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 46 [2021-06-05 06:55:59,486 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 54 [2021-06-05 06:55:59,638 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 56 [2021-06-05 06:55:59,811 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2021-06-05 06:56:00,814 WARN L205 SmtUtils]: Spent 756.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 95 [2021-06-05 06:56:01,592 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 84 [2021-06-05 06:56:01,890 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2021-06-05 06:56:02,745 WARN L205 SmtUtils]: Spent 760.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 92 [2021-06-05 06:56:03,596 WARN L205 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 140 [2021-06-05 06:56:03,832 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 50 [2021-06-05 06:56:03,989 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 58 [2021-06-05 06:56:04,170 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 60 [2021-06-05 06:56:05,348 WARN L205 SmtUtils]: Spent 948.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 113 [2021-06-05 06:56:05,576 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-06-05 06:56:06,505 WARN L205 SmtUtils]: Spent 854.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 99 [2021-06-05 06:56:06,928 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 61 [2021-06-05 06:56:07,973 WARN L205 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 140 [2021-06-05 06:56:09,192 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 242 DAG size of output: 161 [2021-06-05 06:56:09,514 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 65 [2021-06-05 06:56:10,413 WARN L205 SmtUtils]: Spent 815.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 96 [2021-06-05 06:56:11,365 WARN L205 SmtUtils]: Spent 843.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 144 [2021-06-05 06:56:12,025 WARN L205 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 97 [2021-06-05 06:56:12,496 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 114 [2021-06-05 06:56:12,821 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-05 06:56:13,949 WARN L205 SmtUtils]: Spent 948.00 ms on a formula simplification. DAG size of input: 248 DAG size of output: 145 [2021-06-05 06:56:15,040 WARN L205 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 144 [2021-06-05 06:56:15,687 WARN L205 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 129 [2021-06-05 06:56:15,995 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2021-06-05 06:56:16,490 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 118 [2021-06-05 06:56:17,557 WARN L205 SmtUtils]: Spent 754.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 138 [2021-06-05 06:56:18,460 WARN L205 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 138 [2021-06-05 06:56:19,870 WARN L205 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 169 DAG size of output: 157 [2021-06-05 06:56:20,472 WARN L205 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 237 DAG size of output: 220 [2021-06-05 06:56:22,122 WARN L205 SmtUtils]: Spent 1.45 s on a formula simplification. DAG size of input: 179 DAG size of output: 167 [2021-06-05 06:56:22,716 WARN L205 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 201 [2021-06-05 06:56:23,457 WARN L205 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 220 [2021-06-05 06:56:23,846 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 32 [2021-06-05 06:56:24,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:56:24,121 INFO L93 Difference]: Finished difference Result 69247 states and 257198 transitions. [2021-06-05 06:56:24,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 06:56:24,122 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 06:56:24,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:56:24,298 INFO L225 Difference]: With dead ends: 69247 [2021-06-05 06:56:24,298 INFO L226 Difference]: Without dead ends: 69217 [2021-06-05 06:56:24,298 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1797 ImplicationChecksByTransitivity, 26884.6ms TimeCoverageRelationStatistics Valid=679, Invalid=5483, Unknown=0, NotChecked=0, Total=6162 [2021-06-05 06:56:24,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69217 states. [2021-06-05 06:56:25,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69217 to 44010. [2021-06-05 06:56:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44010 states, 44009 states have (on average 3.856961076143516) internal successors, (169741), 44009 states have internal predecessors, (169741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:56:25,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44010 states to 44010 states and 169741 transitions. [2021-06-05 06:56:25,439 INFO L78 Accepts]: Start accepts. Automaton has 44010 states and 169741 transitions. Word has length 30 [2021-06-05 06:56:25,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:56:25,440 INFO L482 AbstractCegarLoop]: Abstraction has 44010 states and 169741 transitions. [2021-06-05 06:56:25,440 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 26 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:56:25,440 INFO L276 IsEmpty]: Start isEmpty. Operand 44010 states and 169741 transitions. [2021-06-05 06:56:25,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:56:25,509 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:56:25,509 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:56:25,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 259 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4635 [2021-06-05 06:56:25,710 INFO L430 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:56:25,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:56:25,710 INFO L82 PathProgramCache]: Analyzing trace with hash 26395198, now seen corresponding path program 178 times [2021-06-05 06:56:25,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:56:25,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064388355] [2021-06-05 06:56:25,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:56:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:56:25,966 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 144 [2021-06-05 06:56:26,296 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 39 [2021-06-05 06:56:26,436 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 147 [2021-06-05 06:56:26,722 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 44 [2021-06-05 06:56:27,120 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 184 [2021-06-05 06:56:27,630 WARN L205 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 93 [2021-06-05 06:56:27,843 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 177 [2021-06-05 06:56:28,303 WARN L205 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 86 [2021-06-05 06:56:28,409 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 135 [2021-06-05 06:56:28,618 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 46 [2021-06-05 06:56:28,825 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 35 [2021-06-05 06:56:29,023 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 34 [2021-06-05 06:56:29,114 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:56:29,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:56:29,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064388355] [2021-06-05 06:56:29,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064388355] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:56:29,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603523657] [2021-06-05 06:56:29,114 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:56:29,140 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:56:29,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:56:29,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 06:56:29,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:56:30,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 06:56:30,483 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,494 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:56:30,497 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:56:30,512 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 06:56:30,533 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2021-06-05 06:56:30,550 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:56:30,569 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:56:30,585 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:56:30,602 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-06-05 06:56:30,619 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 06:56:30,634 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:56:30,650 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:56:30,667 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 25 [2021-06-05 06:56:30,684 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,694 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:56:30,700 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:56:30,716 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 25 [2021-06-05 06:56:30,732 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2021-06-05 06:56:30,749 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,759 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-05 06:56:30,767 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:56:30,783 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 28 [2021-06-05 06:56:30,798 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:56:30,814 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:56:30,831 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:56:30,847 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:56:30,862 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2021-06-05 06:56:30,878 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,887 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:56:30,894 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-06-05 06:56:30,911 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:56:30,928 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:56:30,945 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 06:56:30,963 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:56:30,983 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:30,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:30,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:30,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-05 06:56:31,001 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-06-05 06:56:31,018 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:56:31,034 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 06:56:31,051 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:56:31,068 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:56:31,100 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:56:31,117 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 06:56:31,135 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 06:56:31,152 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 06:56:31,169 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:56:31,186 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-05 06:56:31,202 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-06-05 06:56:31,217 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:56:31,233 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:56:31,249 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:56:31,266 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:56:31,280 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:56:31,295 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:56:31,312 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,327 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-05 06:56:31,327 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-06-05 06:56:31,343 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:56:31,359 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 06:56:31,375 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:56:31,389 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2021-06-05 06:56:31,405 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:56:31,420 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:56:31,435 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,443 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:56:31,451 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:56:31,465 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:56:31,479 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:56:31,491 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:31,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:31,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-05 06:56:31,499 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:31,589 INFO L628 ElimStorePlain]: treesize reduction 206, result has 26.7 percent of original size [2021-06-05 06:56:31,591 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:56:31,591 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3472, output treesize:51 [2021-06-05 06:56:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:56:31,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603523657] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:56:31,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:56:31,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-06-05 06:56:31,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133346204] [2021-06-05 06:56:31,657 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 06:56:31,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:56:31,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 06:56:31,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2021-06-05 06:56:31,658 INFO L87 Difference]: Start difference. First operand 44010 states and 169741 transitions. Second operand has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:56:31,837 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 37 [2021-06-05 06:56:32,104 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 45 [2021-06-05 06:56:32,533 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 45 [2021-06-05 06:56:32,686 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 41 [2021-06-05 06:56:33,382 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 67 [2021-06-05 06:56:33,945 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 81 [2021-06-05 06:56:34,210 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 51 [2021-06-05 06:56:34,434 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 49 [2021-06-05 06:56:34,594 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 06:56:34,783 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 06:56:35,233 WARN L205 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 110 [2021-06-05 06:56:35,398 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 45 [2021-06-05 06:56:35,844 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 83 [2021-06-05 06:56:36,531 WARN L205 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 94 [2021-06-05 06:56:37,074 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 70 [2021-06-05 06:56:37,682 WARN L205 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 113 [2021-06-05 06:56:38,002 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 61 [2021-06-05 06:56:38,627 WARN L205 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 97 [2021-06-05 06:56:38,879 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-05 06:56:39,209 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 65 [2021-06-05 06:56:39,440 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-06-05 06:56:39,622 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2021-06-05 06:56:39,969 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2021-06-05 06:56:40,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:56:40,617 INFO L93 Difference]: Finished difference Result 72447 states and 268328 transitions. [2021-06-05 06:56:40,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 06:56:40,618 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 06:56:40,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:56:40,807 INFO L225 Difference]: With dead ends: 72447 [2021-06-05 06:56:40,808 INFO L226 Difference]: Without dead ends: 72417 [2021-06-05 06:56:40,808 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 969 ImplicationChecksByTransitivity, 10241.2ms TimeCoverageRelationStatistics Valid=411, Invalid=3129, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:56:40,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72417 states. [2021-06-05 06:56:42,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72417 to 44039. [2021-06-05 06:56:42,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44039 states, 44038 states have (on average 3.856623824878514) internal successors, (169838), 44038 states have internal predecessors, (169838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:56:42,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44039 states to 44039 states and 169838 transitions. [2021-06-05 06:56:42,190 INFO L78 Accepts]: Start accepts. Automaton has 44039 states and 169838 transitions. Word has length 30 [2021-06-05 06:56:42,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:56:42,190 INFO L482 AbstractCegarLoop]: Abstraction has 44039 states and 169838 transitions. [2021-06-05 06:56:42,190 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:56:42,190 INFO L276 IsEmpty]: Start isEmpty. Operand 44039 states and 169838 transitions. [2021-06-05 06:56:42,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:56:42,259 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:56:42,259 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:56:42,459 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4823,260 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:56:42,459 INFO L430 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:56:42,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:56:42,460 INFO L82 PathProgramCache]: Analyzing trace with hash 2016530042, now seen corresponding path program 179 times [2021-06-05 06:56:42,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:56:42,460 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486123803] [2021-06-05 06:56:42,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:56:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:56:42,777 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 57 [2021-06-05 06:56:42,981 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 70 [2021-06-05 06:56:43,175 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2021-06-05 06:56:43,322 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2021-06-05 06:56:43,575 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:56:43,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:56:43,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486123803] [2021-06-05 06:56:43,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486123803] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:56:43,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614288884] [2021-06-05 06:56:43,575 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:56:43,601 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:56:43,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:56:43,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 06:56:43,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:56:43,949 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-06-05 06:56:44,175 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 06:56:44,713 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 06:56:45,558 WARN L205 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 168 [2021-06-05 06:56:46,341 WARN L205 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 116 [2021-06-05 06:56:46,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:46,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:46,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:46,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:56:46,636 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:47,068 WARN L205 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 155 [2021-06-05 06:56:47,068 INFO L628 ElimStorePlain]: treesize reduction 91, result has 81.8 percent of original size [2021-06-05 06:56:47,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:47,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:47,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:47,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:56:47,080 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:47,272 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-06-05 06:56:47,272 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:56:47,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:47,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:47,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:56:47,283 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:47,462 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-06-05 06:56:47,462 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:56:47,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:47,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:47,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:47,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:47,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:56:47,477 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:47,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:47,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:47,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:47,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:56:47,489 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:47,640 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-06-05 06:56:47,640 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:56:47,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:47,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:47,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:56:47,651 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:47,795 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-05 06:56:47,796 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:56:47,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:47,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:47,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:56:47,806 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:47,942 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-05 06:56:47,942 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:56:47,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:47,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:47,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:47,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:56:47,952 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:48,072 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 06:56:48,072 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:56:48,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:48,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:48,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:48,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:56:48,080 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:48,188 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-06-05 06:56:48,189 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:56:48,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:48,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:56:48,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:56:48,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:56:48,197 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:56:48,295 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:56:48,300 INFO L550 ElimStorePlain]: Start of recursive call 1: 18 dim-0 vars, 9 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 06:56:48,300 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 27 variables, input treesize:525, output treesize:100 [2021-06-05 06:56:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:56:48,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614288884] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:56:48,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:56:48,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-05 06:56:48,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225059564] [2021-06-05 06:56:48,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:56:48,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:56:48,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:56:48,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:56:48,398 INFO L87 Difference]: Start difference. First operand 44039 states and 169838 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:56:48,779 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 52 [2021-06-05 06:56:49,143 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 84 [2021-06-05 06:56:49,286 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 54 [2021-06-05 06:56:49,561 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2021-06-05 06:56:49,836 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 66 [2021-06-05 06:56:50,161 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 63 [2021-06-05 06:56:50,483 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 68 [2021-06-05 06:56:50,772 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 57 [2021-06-05 06:56:50,950 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-06-05 06:56:51,211 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2021-06-05 06:56:51,833 WARN L205 SmtUtils]: Spent 586.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 102 [2021-06-05 06:56:52,412 WARN L205 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 89 [2021-06-05 06:56:52,724 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 75 [2021-06-05 06:56:52,940 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2021-06-05 06:56:54,307 WARN L205 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 163 DAG size of output: 142 [2021-06-05 06:56:55,690 WARN L205 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 175 DAG size of output: 141 [2021-06-05 06:56:55,865 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-06-05 06:56:56,613 WARN L205 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 95 [2021-06-05 06:56:58,414 WARN L205 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 179 DAG size of output: 125 [2021-06-05 06:57:00,205 WARN L205 SmtUtils]: Spent 1.66 s on a formula simplification. DAG size of input: 167 DAG size of output: 141 [2021-06-05 06:57:00,563 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 87 [2021-06-05 06:57:00,817 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 62 [2021-06-05 06:57:01,230 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-05 06:57:02,166 WARN L205 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 121 [2021-06-05 06:57:03,372 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 171 DAG size of output: 121 [2021-06-05 06:57:03,610 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 67 [2021-06-05 06:57:03,960 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2021-06-05 06:57:04,388 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2021-06-05 06:57:05,297 WARN L205 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 145 [2021-06-05 06:57:05,611 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 51 [2021-06-05 06:57:05,871 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2021-06-05 06:57:06,139 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 61 [2021-06-05 06:57:06,446 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 56 [2021-06-05 06:57:06,756 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2021-06-05 06:57:06,961 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 45 [2021-06-05 06:57:07,238 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 52 [2021-06-05 06:57:07,415 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 45 [2021-06-05 06:57:07,596 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 44 [2021-06-05 06:57:07,793 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 44 [2021-06-05 06:57:07,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:57:07,988 INFO L93 Difference]: Finished difference Result 54532 states and 200549 transitions. [2021-06-05 06:57:07,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-06-05 06:57:07,988 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-06-05 06:57:07,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:57:08,133 INFO L225 Difference]: With dead ends: 54532 [2021-06-05 06:57:08,133 INFO L226 Difference]: Without dead ends: 54358 [2021-06-05 06:57:08,133 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 21412.1ms TimeCoverageRelationStatistics Valid=787, Invalid=3635, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:57:08,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54358 states. [2021-06-05 06:57:08,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54358 to 44083. [2021-06-05 06:57:09,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44083 states, 44082 states have (on average 3.8560410144730275) internal successors, (169982), 44082 states have internal predecessors, (169982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:57:09,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44083 states to 44083 states and 169982 transitions. [2021-06-05 06:57:09,433 INFO L78 Accepts]: Start accepts. Automaton has 44083 states and 169982 transitions. Word has length 30 [2021-06-05 06:57:09,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:57:09,434 INFO L482 AbstractCegarLoop]: Abstraction has 44083 states and 169982 transitions. [2021-06-05 06:57:09,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:57:09,434 INFO L276 IsEmpty]: Start isEmpty. Operand 44083 states and 169982 transitions. [2021-06-05 06:57:09,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:57:09,508 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:57:09,508 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 06:57:09,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 261 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5040 [2021-06-05 06:57:09,708 INFO L430 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:57:09,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:57:09,709 INFO L82 PathProgramCache]: Analyzing trace with hash -728055690, now seen corresponding path program 180 times [2021-06-05 06:57:09,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:57:09,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802945931] [2021-06-05 06:57:09,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:57:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:57:10,248 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2021-06-05 06:57:10,408 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2021-06-05 06:57:10,593 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:57:10,593 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:57:10,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802945931] [2021-06-05 06:57:10,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802945931] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:57:10,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265986733] [2021-06-05 06:57:10,593 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:57:10,620 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:57:10,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:57:10,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 06:57:10,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:57:11,668 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2021-06-05 06:57:12,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 06:57:12,048 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:57:12,062 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:57:12,075 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:57:12,088 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,100 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:57:12,102 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2021-06-05 06:57:12,115 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-05 06:57:12,131 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,138 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:57:12,145 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,153 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2021-06-05 06:57:12,161 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2021-06-05 06:57:12,175 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:57:12,189 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,197 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:57:12,203 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:57:12,218 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,225 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:57:12,232 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:57:12,245 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:57:12,260 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,273 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:57:12,274 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,281 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:57:12,288 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:57:12,302 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:57:12,317 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,324 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,327 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:57:12,331 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,339 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,344 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 22 [2021-06-05 06:57:12,345 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,356 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 06:57:12,361 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 06:57:12,375 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,386 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:57:12,389 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,397 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 16 [2021-06-05 06:57:12,405 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 06:57:12,420 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:57:12,434 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 22 [2021-06-05 06:57:12,448 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,458 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 16 [2021-06-05 06:57:12,461 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 06:57:12,475 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,482 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,485 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:57:12,490 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 22 [2021-06-05 06:57:12,504 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:57:12,518 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 06:57:12,532 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:57:12,549 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:57:12,565 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2021-06-05 06:57:12,581 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2021-06-05 06:57:12,594 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:57:12,608 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-06-05 06:57:12,637 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 22 [2021-06-05 06:57:12,652 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:57:12,666 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:57:12,681 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 22 [2021-06-05 06:57:12,697 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,707 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2021-06-05 06:57:12,711 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:57:12,729 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 16 [2021-06-05 06:57:12,747 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:57:12,764 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,778 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:57:12,783 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:57:12,800 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:57:12,817 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:57:12,835 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:57:12,852 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:57:12,867 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,876 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:57:12,883 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 25 [2021-06-05 06:57:12,896 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,908 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:57:12,909 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 25 [2021-06-05 06:57:12,922 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,929 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 25 [2021-06-05 06:57:12,935 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 28 [2021-06-05 06:57:12,980 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:12,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 19 [2021-06-05 06:57:12,994 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:12,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:12,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:13,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:57:13,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:57:13,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 28 [2021-06-05 06:57:13,001 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 06:57:13,095 INFO L628 ElimStorePlain]: treesize reduction 187, result has 28.6 percent of original size [2021-06-05 06:57:13,097 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:57:13,097 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3472, output treesize:51 [2021-06-05 06:57:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:57:13,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265986733] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:57:13,158 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:57:13,158 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-06-05 06:57:13,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247344024] [2021-06-05 06:57:13,158 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 06:57:13,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:57:13,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 06:57:13,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2021-06-05 06:57:13,159 INFO L87 Difference]: Start difference. First operand 44083 states and 169982 transitions. Second operand has 23 states, 23 states have (on average 2.4347826086956523) internal successors, (56), 23 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:57:14,452 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 82 [2021-06-05 06:57:15,058 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 76 [2021-06-05 06:57:15,527 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 82 [2021-06-05 06:57:15,758 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 83 [2021-06-05 06:57:16,647 WARN L205 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 98 [2021-06-05 06:57:16,814 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 06:57:17,072 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 85 [2021-06-05 06:57:17,283 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 55 Received shutdown request... [2021-06-05 06:57:17,478 WARN L222 SmtUtils]: Removed 13 from assertion stack [2021-06-05 06:57:17,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 06:57:17,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5061,262 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:57:17,679 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 06:57:17,680 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 06:57:17,682 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 06:57:17,682 INFO L202 PluginConnector]: Adding new model min-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 06:57:17 BasicIcfg [2021-06-05 06:57:17,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 06:57:17,682 INFO L168 Benchmark]: Toolchain (without parser) took 803643.73 ms. Allocated memory was 325.1 MB in the beginning and 15.6 GB in the end (delta: 15.2 GB). Free memory was 303.9 MB in the beginning and 12.0 GB in the end (delta: -11.7 GB). Peak memory consumption was 3.5 GB. Max. memory is 16.0 GB. [2021-06-05 06:57:17,682 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 325.1 MB. Free memory is still 305.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 06:57:17,682 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.09 ms. Allocated memory is still 325.1 MB. Free memory was 303.8 MB in the beginning and 302.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 06:57:17,682 INFO L168 Benchmark]: Boogie Preprocessor took 11.57 ms. Allocated memory is still 325.1 MB. Free memory was 302.3 MB in the beginning and 301.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 06:57:17,682 INFO L168 Benchmark]: RCFGBuilder took 192.05 ms. Allocated memory is still 325.1 MB. Free memory was 301.3 MB in the beginning and 288.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-05 06:57:17,682 INFO L168 Benchmark]: TraceAbstraction took 803417.69 ms. Allocated memory was 325.1 MB in the beginning and 15.6 GB in the end (delta: 15.2 GB). Free memory was 287.8 MB in the beginning and 12.0 GB in the end (delta: -11.7 GB). Peak memory consumption was 3.5 GB. Max. memory is 16.0 GB. [2021-06-05 06:57:17,683 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 325.1 MB. Free memory is still 305.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 18.09 ms. Allocated memory is still 325.1 MB. Free memory was 303.8 MB in the beginning and 302.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 11.57 ms. Allocated memory is still 325.1 MB. Free memory was 302.3 MB in the beginning and 301.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 192.05 ms. Allocated memory is still 325.1 MB. Free memory was 301.3 MB in the beginning and 288.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 803417.69 ms. Allocated memory was 325.1 MB in the beginning and 15.6 GB in the end (delta: 15.2 GB). Free memory was 287.8 MB in the beginning and 12.0 GB in the end (delta: -11.7 GB). Peak memory consumption was 3.5 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (44083states) and FLOYD_HOARE automaton (currently 34 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 120 for 103ms.. - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (44083states) and FLOYD_HOARE automaton (currently 34 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 120 for 103ms.. - TimeoutResultAtElement [Line: 59]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (44083states) and FLOYD_HOARE automaton (currently 34 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 120 for 103ms.. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (44083states) and FLOYD_HOARE automaton (currently 34 states, 23 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 120 for 103ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 42 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 803344.2ms, OverallIterations: 264, TraceHistogramMax: 3, EmptinessCheckTime: 5356.5ms, AutomataDifference: 441898.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 28.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11882 SDtfs, 74758 SDslu, 93365 SDs, 0 SdLazy, 149639 SolverSat, 13541 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 81777.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17061 GetRequests, 5552 SyntacticMatches, 267 SemanticMatches, 11241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191451 ImplicationChecksByTransitivity, 398826.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48513occurred in iteration=252, InterpolantAutomatonStates: 9958, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 87169.3ms AutomataMinimizationTime, 263 MinimizatonAttempts, 1353573 StatesRemovedByMinimization, 263 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 772.9ms SsaConstructionTime, 2673.6ms SatisfiabilityAnalysisTime, 207350.5ms InterpolantComputationTime, 14054 NumberOfCodeBlocks, 14054 NumberOfCodeBlocksAsserted, 916 NumberOfCheckSat, 13529 ConstructedInterpolants, 177 QuantifiedInterpolants, 289353 SizeOfPredicates, 1178 NumberOfNonLiveVariables, 18278 ConjunctsInSsa, 4011 ConjunctsInUnsatCore, 525 InterpolantComputations, 3 PerfectInterpolantSequences, 1023/4502 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown