/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/max-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 06:38:00,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 06:38:00,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 06:38:00,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 06:38:00,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 06:38:00,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 06:38:00,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 06:38:00,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 06:38:00,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 06:38:00,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 06:38:00,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 06:38:00,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 06:38:00,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 06:38:00,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 06:38:00,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 06:38:00,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 06:38:00,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 06:38:00,119 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 06:38:00,153 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 06:38:00,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 06:38:00,153 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 06:38:00,154 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 06:38:00,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 06:38:00,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 06:38:00,156 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 06:38:00,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 06:38:00,156 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 06:38:00,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 06:38:00,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 06:38:00,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 06:38:00,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 06:38:00,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 06:38:00,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 06:38:00,158 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 06:38:00,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 06:38:00,158 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 06:38:00,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 06:38:00,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 06:38:00,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 06:38:00,159 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 06:38:00,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 06:38:00,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 06:38:00,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 06:38:00,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 06:38:00,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 06:38:00,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 06:38:00,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 06:38:00,160 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 06:38:00,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 06:38:00,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 06:38:00,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 06:38:00,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 06:38:00,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 06:38:00,486 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 06:38:00,489 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 06:38:00,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-array.wvr.bpl [2021-06-05 06:38:00,490 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/max-array.wvr.bpl' [2021-06-05 06:38:00,698 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 06:38:00,700 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 06:38:00,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 06:38:00,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 06:38:00,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 06:38:00,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/1) ... [2021-06-05 06:38:00,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/1) ... [2021-06-05 06:38:00,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 06:38:00,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 06:38:00,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 06:38:00,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 06:38:00,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/1) ... [2021-06-05 06:38:00,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/1) ... [2021-06-05 06:38:00,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/1) ... [2021-06-05 06:38:00,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/1) ... [2021-06-05 06:38:00,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/1) ... [2021-06-05 06:38:00,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/1) ... [2021-06-05 06:38:00,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/1) ... [2021-06-05 06:38:00,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 06:38:00,762 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 06:38:00,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 06:38:00,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 06:38:00,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (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 06:38:00,840 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 06:38:00,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 06:38:00,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 06:38:00,840 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 06:38:00,841 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 06:38:00,841 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 06:38:00,841 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 06:38:00,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 06:38:00,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 06:38:00,842 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 06:38:00,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 06:38:00,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 06:38:00,844 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 06:38:01,016 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 06:38:01,017 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 06:38:01,018 INFO L202 PluginConnector]: Adding new model max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 06:38:01 BoogieIcfgContainer [2021-06-05 06:38:01,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 06:38:01,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 06:38:01,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 06:38:01,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 06:38:01,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 06:38:00" (1/2) ... [2021-06-05 06:38:01,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0c08f4 and model type max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 06:38:01, skipping insertion in model container [2021-06-05 06:38:01,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 06:38:01" (2/2) ... [2021-06-05 06:38:01,025 INFO L111 eAbstractionObserver]: Analyzing ICFG max-array.wvr.bpl [2021-06-05 06:38:01,029 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 06:38:01,029 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 06:38:01,029 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 06:38:01,030 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 06:38:01,079 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 06:38:01,107 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 06:38:01,124 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 06:38:01,124 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 06:38:01,124 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 06:38:01,124 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 06:38:01,125 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 06:38:01,125 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 06:38:01,125 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 06:38:01,125 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 06:38:01,132 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 29 transitions, 82 flow [2021-06-05 06:38:01,151 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 06:38:01,153 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 06:38:01,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 06:38:01,160 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:01,160 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 06:38:01,161 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:01,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:01,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1272469491, now seen corresponding path program 1 times [2021-06-05 06:38:01,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:01,173 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637748665] [2021-06-05 06:38:01,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:01,285 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 06:38:01,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:01,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637748665] [2021-06-05 06:38:01,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637748665] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 06:38:01,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 06:38:01,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 06:38:01,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855281755] [2021-06-05 06:38:01,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-05 06:38:01,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:01,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-05 06:38:01,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 06:38:01,310 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 06:38:01,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:01,375 INFO L93 Difference]: Finished difference Result 217 states and 617 transitions. [2021-06-05 06:38:01,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-05 06:38:01,377 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 06:38:01,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:01,388 INFO L225 Difference]: With dead ends: 217 [2021-06-05 06:38:01,388 INFO L226 Difference]: Without dead ends: 202 [2021-06-05 06:38:01,389 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-05 06:38:01,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-06-05 06:38:01,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 149. [2021-06-05 06:38:01,433 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 06:38:01,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 419 transitions. [2021-06-05 06:38:01,438 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 419 transitions. Word has length 18 [2021-06-05 06:38:01,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:01,439 INFO L482 AbstractCegarLoop]: Abstraction has 149 states and 419 transitions. [2021-06-05 06:38:01,440 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 06:38:01,440 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 419 transitions. [2021-06-05 06:38:01,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 06:38:01,442 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:01,442 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 06:38:01,442 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 06:38:01,442 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:01,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:01,443 INFO L82 PathProgramCache]: Analyzing trace with hash -411683507, now seen corresponding path program 1 times [2021-06-05 06:38:01,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:01,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061460469] [2021-06-05 06:38:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:01,488 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 06:38:01,488 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:01,488 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061460469] [2021-06-05 06:38:01,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061460469] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 06:38:01,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 06:38:01,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 06:38:01,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064942683] [2021-06-05 06:38:01,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 06:38:01,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:01,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 06:38:01,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 06:38:01,491 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 06:38:01,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:01,536 INFO L93 Difference]: Finished difference Result 158 states and 445 transitions. [2021-06-05 06:38:01,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 06:38:01,537 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 06:38:01,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:01,540 INFO L225 Difference]: With dead ends: 158 [2021-06-05 06:38:01,540 INFO L226 Difference]: Without dead ends: 158 [2021-06-05 06:38:01,541 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 06:38:01,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-06-05 06:38:01,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 133. [2021-06-05 06:38:01,572 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 06:38:01,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 374 transitions. [2021-06-05 06:38:01,575 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 374 transitions. Word has length 20 [2021-06-05 06:38:01,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:01,576 INFO L482 AbstractCegarLoop]: Abstraction has 133 states and 374 transitions. [2021-06-05 06:38:01,576 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 06:38:01,576 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 374 transitions. [2021-06-05 06:38:01,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 06:38:01,578 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:01,578 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 06:38:01,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 06:38:01,578 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:01,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:01,579 INFO L82 PathProgramCache]: Analyzing trace with hash 296923691, now seen corresponding path program 1 times [2021-06-05 06:38:01,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:01,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043983325] [2021-06-05 06:38:01,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:01,676 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 06:38:01,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:01,677 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043983325] [2021-06-05 06:38:01,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043983325] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 06:38:01,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 06:38:01,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 06:38:01,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481630642] [2021-06-05 06:38:01,678 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 06:38:01,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:01,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 06:38:01,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 06:38:01,679 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 06:38:01,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:01,752 INFO L93 Difference]: Finished difference Result 183 states and 522 transitions. [2021-06-05 06:38:01,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 06:38:01,752 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 06:38:01,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:01,755 INFO L225 Difference]: With dead ends: 183 [2021-06-05 06:38:01,755 INFO L226 Difference]: Without dead ends: 183 [2021-06-05 06:38:01,756 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 06:38:01,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-06-05 06:38:01,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 158. [2021-06-05 06:38:01,782 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 06:38:01,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 448 transitions. [2021-06-05 06:38:01,795 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 448 transitions. Word has length 20 [2021-06-05 06:38:01,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:01,795 INFO L482 AbstractCegarLoop]: Abstraction has 158 states and 448 transitions. [2021-06-05 06:38:01,795 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 06:38:01,795 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 448 transitions. [2021-06-05 06:38:01,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 06:38:01,797 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:01,797 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 06:38:01,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 06:38:01,797 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:01,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:01,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1416433813, now seen corresponding path program 1 times [2021-06-05 06:38:01,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:01,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875411081] [2021-06-05 06:38:01,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:02,174 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 06:38:02,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:02,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875411081] [2021-06-05 06:38:02,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875411081] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:02,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955765602] [2021-06-05 06:38:02,175 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 06:38:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:02,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 06:38:02,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:02,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 06:38:02,547 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:02,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 06:38:02,553 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:02,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:38:02,557 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:02,575 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:02,578 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 06:38:02,578 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:91, output treesize:15 [2021-06-05 06:38:02,620 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 06:38:02,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955765602] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:02,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:02,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:38:02,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307242684] [2021-06-05 06:38:02,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:38:02,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:02,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:38:02,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:38:02,631 INFO L87 Difference]: Start difference. First operand 158 states and 448 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 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 06:38:02,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:02,919 INFO L93 Difference]: Finished difference Result 330 states and 935 transitions. [2021-06-05 06:38:02,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 06:38:02,920 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 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 22 [2021-06-05 06:38:02,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:02,927 INFO L225 Difference]: With dead ends: 330 [2021-06-05 06:38:02,927 INFO L226 Difference]: Without dead ends: 315 [2021-06-05 06:38:02,928 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 441.2ms TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:38:02,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-06-05 06:38:02,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 224. [2021-06-05 06:38:02,959 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 06:38:02,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 640 transitions. [2021-06-05 06:38:02,961 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 640 transitions. Word has length 22 [2021-06-05 06:38:02,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:02,961 INFO L482 AbstractCegarLoop]: Abstraction has 224 states and 640 transitions. [2021-06-05 06:38:02,961 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 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 06:38:02,961 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 640 transitions. [2021-06-05 06:38:02,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 06:38:02,970 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:02,970 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 06:38:03,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:03,171 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:03,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:03,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1584242905, now seen corresponding path program 2 times [2021-06-05 06:38:03,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:03,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233284450] [2021-06-05 06:38:03,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:03,448 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 06:38:03,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:03,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233284450] [2021-06-05 06:38:03,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233284450] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:03,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638867120] [2021-06-05 06:38:03,449 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 06:38:03,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:03,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:03,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-05 06:38:03,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:03,861 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:03,862 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 06:38:03,868 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:03,887 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:03,887 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 06:38:03,889 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:03,900 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:03,901 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 06:38:03,903 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:03,913 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:03,914 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 06:38:03,917 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:03,964 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:03,991 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:38:03,992 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:124, output treesize:114 [2021-06-05 06:38:04,141 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 06:38:04,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638867120] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:04,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:04,143 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-06-05 06:38:04,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213844076] [2021-06-05 06:38:04,143 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:38:04,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:04,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:38:04,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:38:04,145 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 06:38:04,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:04,826 INFO L93 Difference]: Finished difference Result 406 states and 1173 transitions. [2021-06-05 06:38:04,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 06:38:04,827 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 06:38:04,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:04,829 INFO L225 Difference]: With dead ends: 406 [2021-06-05 06:38:04,830 INFO L226 Difference]: Without dead ends: 391 [2021-06-05 06:38:04,830 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 830.9ms TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:38:04,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-06-05 06:38:04,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 229. [2021-06-05 06:38:04,847 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 06:38:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 664 transitions. [2021-06-05 06:38:04,848 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 664 transitions. Word has length 22 [2021-06-05 06:38:04,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:04,849 INFO L482 AbstractCegarLoop]: Abstraction has 229 states and 664 transitions. [2021-06-05 06:38:04,849 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 06:38:04,849 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 664 transitions. [2021-06-05 06:38:04,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 06:38:04,850 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:04,850 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 06:38:05,067 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:05,067 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:05,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:05,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1285469457, now seen corresponding path program 3 times [2021-06-05 06:38:05,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:05,068 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371149157] [2021-06-05 06:38:05,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:05,257 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 06:38:05,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:05,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371149157] [2021-06-05 06:38:05,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371149157] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:05,258 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68931458] [2021-06-05 06:38:05,258 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 06:38:05,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 06:38:05,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:05,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-05 06:38:05,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:05,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 06:38:05,412 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:05,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:38:05,416 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:05,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2021-06-05 06:38:05,432 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:05,438 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:05,439 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:38:05,440 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:67, output treesize:15 [2021-06-05 06:38:05,474 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 06:38:05,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68931458] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:05,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:05,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-06-05 06:38:05,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282687847] [2021-06-05 06:38:05,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:38:05,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:05,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:38:05,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:38:05,476 INFO L87 Difference]: Start difference. First operand 229 states and 664 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) 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 06:38:05,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:05,669 INFO L93 Difference]: Finished difference Result 363 states and 1038 transitions. [2021-06-05 06:38:05,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 06:38:05,669 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) 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 22 [2021-06-05 06:38:05,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:05,672 INFO L225 Difference]: With dead ends: 363 [2021-06-05 06:38:05,672 INFO L226 Difference]: Without dead ends: 348 [2021-06-05 06:38:05,672 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 277.4ms TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:38:05,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-06-05 06:38:05,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 241. [2021-06-05 06:38:05,679 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 06:38:05,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 694 transitions. [2021-06-05 06:38:05,681 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 694 transitions. Word has length 22 [2021-06-05 06:38:05,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:05,681 INFO L482 AbstractCegarLoop]: Abstraction has 241 states and 694 transitions. [2021-06-05 06:38:05,681 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) 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 06:38:05,681 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 694 transitions. [2021-06-05 06:38:05,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-06-05 06:38:05,682 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:05,682 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 06:38:05,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:05,897 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:05,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:05,897 INFO L82 PathProgramCache]: Analyzing trace with hash 285356143, now seen corresponding path program 4 times [2021-06-05 06:38:05,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:05,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769038415] [2021-06-05 06:38:05,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:06,026 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 06:38:06,026 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:06,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769038415] [2021-06-05 06:38:06,026 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769038415] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:06,026 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127593978] [2021-06-05 06:38:06,026 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 06:38:06,070 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:38:06,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:06,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-05 06:38:06,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:06,303 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:06,303 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 06:38:06,305 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:06,318 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:06,318 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 06:38:06,319 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:06,364 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:06,375 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:06,375 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 06:38:06,379 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:06,387 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:06,387 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 06:38:06,397 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:06,436 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:06,454 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 06:38:06,454 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:121, output treesize:71 [2021-06-05 06:38:06,559 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 06:38:06,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127593978] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:06,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:06,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:38:06,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714526766] [2021-06-05 06:38:06,560 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:06,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:06,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:06,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:06,561 INFO L87 Difference]: Start difference. First operand 241 states and 694 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 06:38:06,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:06,904 INFO L93 Difference]: Finished difference Result 425 states and 1233 transitions. [2021-06-05 06:38:06,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 06:38:06,905 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 06:38:06,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:06,907 INFO L225 Difference]: With dead ends: 425 [2021-06-05 06:38:06,907 INFO L226 Difference]: Without dead ends: 410 [2021-06-05 06:38:06,907 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 396.1ms TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:38:06,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-06-05 06:38:06,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 247. [2021-06-05 06:38:06,914 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 06:38:06,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 718 transitions. [2021-06-05 06:38:06,915 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 718 transitions. Word has length 22 [2021-06-05 06:38:06,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:06,915 INFO L482 AbstractCegarLoop]: Abstraction has 247 states and 718 transitions. [2021-06-05 06:38:06,916 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 06:38:06,916 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 718 transitions. [2021-06-05 06:38:06,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:06,917 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:06,917 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 06:38:07,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:07,141 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:07,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:07,141 INFO L82 PathProgramCache]: Analyzing trace with hash -703639479, now seen corresponding path program 5 times [2021-06-05 06:38:07,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:07,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665101870] [2021-06-05 06:38:07,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:07,193 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 06:38:07,194 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:07,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665101870] [2021-06-05 06:38:07,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665101870] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:07,194 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101436412] [2021-06-05 06:38:07,194 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 06:38:07,240 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:38:07,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:07,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:07,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:07,318 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 06:38:07,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101436412] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:07,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:07,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:38:07,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097900483] [2021-06-05 06:38:07,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:38:07,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:07,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:38:07,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:38:07,319 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 06:38:07,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:07,679 INFO L93 Difference]: Finished difference Result 619 states and 1783 transitions. [2021-06-05 06:38:07,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:38:07,679 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 06:38:07,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:07,682 INFO L225 Difference]: With dead ends: 619 [2021-06-05 06:38:07,682 INFO L226 Difference]: Without dead ends: 619 [2021-06-05 06:38:07,683 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 213.4ms TimeCoverageRelationStatistics Valid=210, Invalid=602, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:38:07,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-06-05 06:38:07,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 297. [2021-06-05 06:38:07,691 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 06:38:07,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 903 transitions. [2021-06-05 06:38:07,692 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 903 transitions. Word has length 24 [2021-06-05 06:38:07,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:07,693 INFO L482 AbstractCegarLoop]: Abstraction has 297 states and 903 transitions. [2021-06-05 06:38:07,693 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 06:38:07,694 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 903 transitions. [2021-06-05 06:38:07,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:07,695 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:07,696 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 06:38:07,908 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:07,909 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:07,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:07,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1679958323, now seen corresponding path program 6 times [2021-06-05 06:38:07,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:07,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254687093] [2021-06-05 06:38:07,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:07,946 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 06:38:07,947 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:07,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254687093] [2021-06-05 06:38:07,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254687093] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:07,947 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728331080] [2021-06-05 06:38:07,947 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 06:38:07,972 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:38:07,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:07,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:07,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:08,084 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 06:38:08,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728331080] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:08,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:08,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:08,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63177646] [2021-06-05 06:38:08,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:08,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:08,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:08,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:08,086 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 06:38:08,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:08,791 INFO L93 Difference]: Finished difference Result 1078 states and 2992 transitions. [2021-06-05 06:38:08,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:38:08,791 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 06:38:08,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:08,796 INFO L225 Difference]: With dead ends: 1078 [2021-06-05 06:38:08,796 INFO L226 Difference]: Without dead ends: 1078 [2021-06-05 06:38:08,797 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 459.9ms TimeCoverageRelationStatistics Valid=540, Invalid=2010, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:38:08,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-06-05 06:38:08,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 302. [2021-06-05 06:38:08,810 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 06:38:08,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 928 transitions. [2021-06-05 06:38:08,811 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 928 transitions. Word has length 24 [2021-06-05 06:38:08,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:08,811 INFO L482 AbstractCegarLoop]: Abstraction has 302 states and 928 transitions. [2021-06-05 06:38:08,811 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 06:38:08,811 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 928 transitions. [2021-06-05 06:38:08,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:08,812 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:08,812 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 06:38:09,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:09,036 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:09,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:09,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1113006243, now seen corresponding path program 7 times [2021-06-05 06:38:09,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:09,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828015875] [2021-06-05 06:38:09,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:09,087 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 06:38:09,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:09,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828015875] [2021-06-05 06:38:09,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828015875] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:09,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280357009] [2021-06-05 06:38:09,091 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 06:38:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:09,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:09,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:09,216 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 06:38:09,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280357009] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:09,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:09,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:09,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732554171] [2021-06-05 06:38:09,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:09,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:09,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:09,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:09,218 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 06:38:09,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:09,830 INFO L93 Difference]: Finished difference Result 951 states and 2692 transitions. [2021-06-05 06:38:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:38:09,830 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 06:38:09,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:09,835 INFO L225 Difference]: With dead ends: 951 [2021-06-05 06:38:09,835 INFO L226 Difference]: Without dead ends: 951 [2021-06-05 06:38:09,836 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 377.7ms TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 06:38:09,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2021-06-05 06:38:09,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 293. [2021-06-05 06:38:09,847 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 06:38:09,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 894 transitions. [2021-06-05 06:38:09,851 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 894 transitions. Word has length 24 [2021-06-05 06:38:09,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:09,851 INFO L482 AbstractCegarLoop]: Abstraction has 293 states and 894 transitions. [2021-06-05 06:38:09,851 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 06:38:09,851 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 894 transitions. [2021-06-05 06:38:09,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:09,852 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:09,852 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 06:38:10,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:10,069 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:10,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:10,069 INFO L82 PathProgramCache]: Analyzing trace with hash -176867571, now seen corresponding path program 1 times [2021-06-05 06:38:10,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:10,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422906000] [2021-06-05 06:38:10,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:10,096 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 06:38:10,096 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:10,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422906000] [2021-06-05 06:38:10,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422906000] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:10,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791341088] [2021-06-05 06:38:10,096 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 06:38:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:10,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 06:38:10,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:10,179 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 06:38:10,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791341088] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:10,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:10,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 06:38:10,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641937988] [2021-06-05 06:38:10,180 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 06:38:10,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:10,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 06:38:10,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 06:38:10,181 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 06:38:10,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:10,284 INFO L93 Difference]: Finished difference Result 669 states and 1943 transitions. [2021-06-05 06:38:10,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 06:38:10,285 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 06:38:10,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:10,288 INFO L225 Difference]: With dead ends: 669 [2021-06-05 06:38:10,288 INFO L226 Difference]: Without dead ends: 663 [2021-06-05 06:38:10,289 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 63.9ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:10,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-06-05 06:38:10,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 413. [2021-06-05 06:38:10,300 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 06:38:10,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1306 transitions. [2021-06-05 06:38:10,301 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1306 transitions. Word has length 24 [2021-06-05 06:38:10,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:10,301 INFO L482 AbstractCegarLoop]: Abstraction has 413 states and 1306 transitions. [2021-06-05 06:38:10,301 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 06:38:10,302 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1306 transitions. [2021-06-05 06:38:10,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:10,303 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:10,303 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 06:38:10,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-06-05 06:38:10,517 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:10,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:10,517 INFO L82 PathProgramCache]: Analyzing trace with hash -613836279, now seen corresponding path program 8 times [2021-06-05 06:38:10,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:10,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432737547] [2021-06-05 06:38:10,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:10,565 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 06:38:10,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:10,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432737547] [2021-06-05 06:38:10,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432737547] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:10,566 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942909794] [2021-06-05 06:38:10,566 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 06:38:10,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:10,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:10,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:10,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:10,674 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 06:38:10,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942909794] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:10,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:10,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 06:38:10,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63537630] [2021-06-05 06:38:10,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:10,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:10,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:10,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:10,676 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 06:38:10,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:10,821 INFO L93 Difference]: Finished difference Result 710 states and 2124 transitions. [2021-06-05 06:38:10,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 06:38:10,821 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 06:38:10,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:10,827 INFO L225 Difference]: With dead ends: 710 [2021-06-05 06:38:10,828 INFO L226 Difference]: Without dead ends: 672 [2021-06-05 06:38:10,828 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 135.6ms TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:38:10,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-06-05 06:38:10,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 515. [2021-06-05 06:38:10,840 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 06:38:10,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 1633 transitions. [2021-06-05 06:38:10,841 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 1633 transitions. Word has length 24 [2021-06-05 06:38:10,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:10,842 INFO L482 AbstractCegarLoop]: Abstraction has 515 states and 1633 transitions. [2021-06-05 06:38:10,842 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 06:38:10,842 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 1633 transitions. [2021-06-05 06:38:10,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:10,843 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:10,843 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 06:38:11,065 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:11,065 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:11,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:11,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1319793611, now seen corresponding path program 2 times [2021-06-05 06:38:11,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:11,066 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228620699] [2021-06-05 06:38:11,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:11,108 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 06:38:11,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:11,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228620699] [2021-06-05 06:38:11,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228620699] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:11,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572244999] [2021-06-05 06:38:11,109 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 06:38:11,163 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:11,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:11,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 06:38:11,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:11,221 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 06:38:11,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572244999] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:11,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:11,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 06:38:11,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375143432] [2021-06-05 06:38:11,222 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 06:38:11,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:11,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 06:38:11,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-05 06:38:11,222 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 06:38:11,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:11,337 INFO L93 Difference]: Finished difference Result 830 states and 2453 transitions. [2021-06-05 06:38:11,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 06:38:11,337 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 06:38:11,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:11,341 INFO L225 Difference]: With dead ends: 830 [2021-06-05 06:38:11,341 INFO L226 Difference]: Without dead ends: 830 [2021-06-05 06:38:11,341 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 71.9ms TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:11,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-06-05 06:38:11,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 530. [2021-06-05 06:38:11,357 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 06:38:11,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1668 transitions. [2021-06-05 06:38:11,359 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1668 transitions. Word has length 24 [2021-06-05 06:38:11,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:11,359 INFO L482 AbstractCegarLoop]: Abstraction has 530 states and 1668 transitions. [2021-06-05 06:38:11,359 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 06:38:11,359 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1668 transitions. [2021-06-05 06:38:11,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:11,360 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:11,361 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 06:38:11,576 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:11,577 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:11,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:11,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1628492119, now seen corresponding path program 9 times [2021-06-05 06:38:11,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:11,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434389698] [2021-06-05 06:38:11,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:11,616 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 06:38:11,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:11,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434389698] [2021-06-05 06:38:11,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434389698] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:11,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143667494] [2021-06-05 06:38:11,617 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 06:38:11,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:38:11,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:11,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:11,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:11,717 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 06:38:11,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143667494] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:11,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:11,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:38:11,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961255196] [2021-06-05 06:38:11,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:38:11,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:11,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:38:11,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:38:11,719 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 06:38:12,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:12,004 INFO L93 Difference]: Finished difference Result 1196 states and 3492 transitions. [2021-06-05 06:38:12,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 06:38:12,004 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 06:38:12,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:12,009 INFO L225 Difference]: With dead ends: 1196 [2021-06-05 06:38:12,010 INFO L226 Difference]: Without dead ends: 1196 [2021-06-05 06:38:12,010 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 161.4ms TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2021-06-05 06:38:12,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2021-06-05 06:38:12,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 542. [2021-06-05 06:38:12,038 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 06:38:12,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 1704 transitions. [2021-06-05 06:38:12,040 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 1704 transitions. Word has length 24 [2021-06-05 06:38:12,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:12,040 INFO L482 AbstractCegarLoop]: Abstraction has 542 states and 1704 transitions. [2021-06-05 06:38:12,040 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 06:38:12,041 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 1704 transitions. [2021-06-05 06:38:12,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:12,042 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:12,042 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 06:38:12,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-06-05 06:38:12,265 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:12,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:12,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1881561083, now seen corresponding path program 10 times [2021-06-05 06:38:12,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:12,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467455321] [2021-06-05 06:38:12,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:12,299 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 06:38:12,299 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:12,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467455321] [2021-06-05 06:38:12,299 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467455321] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:12,299 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432275943] [2021-06-05 06:38:12,299 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 06:38:12,321 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:38:12,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:12,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:12,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:12,382 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 06:38:12,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432275943] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:12,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:12,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:38:12,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288273527] [2021-06-05 06:38:12,383 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:38:12,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:12,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:38:12,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:38:12,383 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 06:38:12,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:12,772 INFO L93 Difference]: Finished difference Result 1492 states and 4245 transitions. [2021-06-05 06:38:12,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 06:38:12,772 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 06:38:12,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:12,779 INFO L225 Difference]: With dead ends: 1492 [2021-06-05 06:38:12,779 INFO L226 Difference]: Without dead ends: 1492 [2021-06-05 06:38:12,779 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 235.3ms TimeCoverageRelationStatistics Valid=292, Invalid=968, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:38:12,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2021-06-05 06:38:12,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 586. [2021-06-05 06:38:12,800 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 06:38:12,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 1846 transitions. [2021-06-05 06:38:12,802 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 1846 transitions. Word has length 24 [2021-06-05 06:38:12,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:12,802 INFO L482 AbstractCegarLoop]: Abstraction has 586 states and 1846 transitions. [2021-06-05 06:38:12,802 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 06:38:12,802 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 1846 transitions. [2021-06-05 06:38:12,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:12,804 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:12,804 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 06:38:13,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-06-05 06:38:13,017 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:13,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:13,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1330383557, now seen corresponding path program 11 times [2021-06-05 06:38:13,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:13,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732493159] [2021-06-05 06:38:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:13,052 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 06:38:13,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:13,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732493159] [2021-06-05 06:38:13,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732493159] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:13,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787984086] [2021-06-05 06:38:13,052 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 06:38:13,089 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:13,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:13,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:13,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:13,160 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 06:38:13,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787984086] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:13,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:13,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 06:38:13,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781253481] [2021-06-05 06:38:13,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:13,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:13,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:13,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:13,161 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 06:38:13,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:13,423 INFO L93 Difference]: Finished difference Result 1258 states and 3765 transitions. [2021-06-05 06:38:13,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:38:13,424 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 06:38:13,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:13,429 INFO L225 Difference]: With dead ends: 1258 [2021-06-05 06:38:13,429 INFO L226 Difference]: Without dead ends: 1248 [2021-06-05 06:38:13,430 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 164.3ms TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2021-06-05 06:38:13,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-06-05 06:38:13,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 758. [2021-06-05 06:38:13,449 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 06:38:13,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2441 transitions. [2021-06-05 06:38:13,451 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2441 transitions. Word has length 24 [2021-06-05 06:38:13,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:13,451 INFO L482 AbstractCegarLoop]: Abstraction has 758 states and 2441 transitions. [2021-06-05 06:38:13,452 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 06:38:13,452 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2441 transitions. [2021-06-05 06:38:13,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:13,453 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:13,454 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 06:38:13,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-06-05 06:38:13,669 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:13,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:13,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1493505621, now seen corresponding path program 12 times [2021-06-05 06:38:13,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:13,669 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025716626] [2021-06-05 06:38:13,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:13,704 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 06:38:13,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:13,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025716626] [2021-06-05 06:38:13,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025716626] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:13,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95859871] [2021-06-05 06:38:13,704 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 06:38:13,729 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:38:13,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:13,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:13,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:13,813 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 06:38:13,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95859871] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:13,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:13,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-05 06:38:13,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454134909] [2021-06-05 06:38:13,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:13,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:13,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:13,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:13,814 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 06:38:14,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:14,050 INFO L93 Difference]: Finished difference Result 1329 states and 4025 transitions. [2021-06-05 06:38:14,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 06:38:14,050 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 06:38:14,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:14,056 INFO L225 Difference]: With dead ends: 1329 [2021-06-05 06:38:14,056 INFO L226 Difference]: Without dead ends: 1329 [2021-06-05 06:38:14,056 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 168.5ms TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:38:14,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2021-06-05 06:38:14,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 764. [2021-06-05 06:38:14,076 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 06:38:14,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 2457 transitions. [2021-06-05 06:38:14,078 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 2457 transitions. Word has length 24 [2021-06-05 06:38:14,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:14,078 INFO L482 AbstractCegarLoop]: Abstraction has 764 states and 2457 transitions. [2021-06-05 06:38:14,078 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 06:38:14,078 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 2457 transitions. [2021-06-05 06:38:14,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:14,080 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:14,080 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 06:38:14,302 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:14,303 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:14,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:14,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1926382225, now seen corresponding path program 13 times [2021-06-05 06:38:14,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:14,303 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877851456] [2021-06-05 06:38:14,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:14,341 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 06:38:14,342 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:14,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877851456] [2021-06-05 06:38:14,342 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877851456] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:14,342 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142268844] [2021-06-05 06:38:14,342 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 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 06:38:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:14,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:14,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:14,433 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 06:38:14,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142268844] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:14,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:14,434 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:38:14,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801529421] [2021-06-05 06:38:14,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:38:14,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:14,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:38:14,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:38:14,435 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 06:38:14,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:14,774 INFO L93 Difference]: Finished difference Result 1548 states and 4638 transitions. [2021-06-05 06:38:14,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 06:38:14,774 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 06:38:14,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:14,779 INFO L225 Difference]: With dead ends: 1548 [2021-06-05 06:38:14,779 INFO L226 Difference]: Without dead ends: 1544 [2021-06-05 06:38:14,780 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 198.9ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:38:14,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1544 states. [2021-06-05 06:38:14,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1544 to 772. [2021-06-05 06:38:14,801 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 06:38:14,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 2471 transitions. [2021-06-05 06:38:14,803 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 2471 transitions. Word has length 24 [2021-06-05 06:38:14,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:14,803 INFO L482 AbstractCegarLoop]: Abstraction has 772 states and 2471 transitions. [2021-06-05 06:38:14,803 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 06:38:14,803 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 2471 transitions. [2021-06-05 06:38:14,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:14,805 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:14,805 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 06:38:15,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:15,017 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:15,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:15,017 INFO L82 PathProgramCache]: Analyzing trace with hash 2096575881, now seen corresponding path program 14 times [2021-06-05 06:38:15,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:15,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777594184] [2021-06-05 06:38:15,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:15,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:15,059 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 06:38:15,059 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:15,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777594184] [2021-06-05 06:38:15,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777594184] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:15,059 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506892084] [2021-06-05 06:38:15,059 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 06:38:15,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:15,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:15,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:15,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:15,175 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 06:38:15,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506892084] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:15,176 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:15,176 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:15,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564450944] [2021-06-05 06:38:15,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:15,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:15,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:15,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:15,177 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 06:38:15,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:15,875 INFO L93 Difference]: Finished difference Result 2734 states and 8136 transitions. [2021-06-05 06:38:15,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:38:15,875 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 06:38:15,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:15,887 INFO L225 Difference]: With dead ends: 2734 [2021-06-05 06:38:15,887 INFO L226 Difference]: Without dead ends: 2734 [2021-06-05 06:38:15,888 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 876 ImplicationChecksByTransitivity, 409.7ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:38:15,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2734 states. [2021-06-05 06:38:15,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2734 to 841. [2021-06-05 06:38:15,919 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 06:38:15,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 2781 transitions. [2021-06-05 06:38:15,922 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 2781 transitions. Word has length 24 [2021-06-05 06:38:15,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:15,922 INFO L482 AbstractCegarLoop]: Abstraction has 841 states and 2781 transitions. [2021-06-05 06:38:15,922 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 06:38:15,922 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 2781 transitions. [2021-06-05 06:38:15,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:15,924 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:15,924 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 06:38:16,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:16,147 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:16,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:16,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1631439335, now seen corresponding path program 15 times [2021-06-05 06:38:16,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:16,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838321208] [2021-06-05 06:38:16,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:16,179 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 06:38:16,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:16,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838321208] [2021-06-05 06:38:16,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838321208] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:16,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860682334] [2021-06-05 06:38:16,179 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 06:38:16,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:38:16,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:16,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:16,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:16,284 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 06:38:16,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860682334] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:16,284 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:16,284 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:16,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99857177] [2021-06-05 06:38:16,284 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:16,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:16,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:16,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:16,285 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 06:38:16,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:16,933 INFO L93 Difference]: Finished difference Result 2693 states and 8043 transitions. [2021-06-05 06:38:16,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:38:16,934 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 06:38:16,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:16,940 INFO L225 Difference]: With dead ends: 2693 [2021-06-05 06:38:16,940 INFO L226 Difference]: Without dead ends: 2693 [2021-06-05 06:38:16,941 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 410.7ms TimeCoverageRelationStatistics Valid=584, Invalid=1966, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:38:16,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-06-05 06:38:16,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 831. [2021-06-05 06:38:16,970 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 06:38:16,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 2730 transitions. [2021-06-05 06:38:16,972 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 2730 transitions. Word has length 24 [2021-06-05 06:38:16,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:16,972 INFO L482 AbstractCegarLoop]: Abstraction has 831 states and 2730 transitions. [2021-06-05 06:38:16,973 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 06:38:16,973 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 2730 transitions. [2021-06-05 06:38:16,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:16,975 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:16,975 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 06:38:17,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:17,189 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:17,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:17,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1491182103, now seen corresponding path program 16 times [2021-06-05 06:38:17,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:17,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596255887] [2021-06-05 06:38:17,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:17,228 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 06:38:17,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:17,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596255887] [2021-06-05 06:38:17,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596255887] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:17,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905605910] [2021-06-05 06:38:17,229 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 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 06:38:17,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:38:17,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:17,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:17,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:17,344 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 06:38:17,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905605910] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:17,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:17,345 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:38:17,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747945591] [2021-06-05 06:38:17,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:38:17,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:17,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:38:17,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:38:17,347 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 06:38:17,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:17,886 INFO L93 Difference]: Finished difference Result 2677 states and 7780 transitions. [2021-06-05 06:38:17,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:38:17,886 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 06:38:17,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:17,892 INFO L225 Difference]: With dead ends: 2677 [2021-06-05 06:38:17,892 INFO L226 Difference]: Without dead ends: 2677 [2021-06-05 06:38:17,893 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 328.5ms TimeCoverageRelationStatistics Valid=493, Invalid=1669, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 06:38:17,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2021-06-05 06:38:17,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 845. [2021-06-05 06:38:17,922 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 06:38:17,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2785 transitions. [2021-06-05 06:38:17,924 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2785 transitions. Word has length 24 [2021-06-05 06:38:17,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:17,925 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2785 transitions. [2021-06-05 06:38:17,925 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 06:38:17,925 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2785 transitions. [2021-06-05 06:38:17,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:17,926 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:17,927 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 06:38:18,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-06-05 06:38:18,149 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:18,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:18,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1572558191, now seen corresponding path program 17 times [2021-06-05 06:38:18,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:18,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48816925] [2021-06-05 06:38:18,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:18,190 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 06:38:18,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:18,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48816925] [2021-06-05 06:38:18,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48816925] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:18,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883184453] [2021-06-05 06:38:18,191 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 06:38:18,219 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:38:18,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:18,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:18,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:18,280 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 06:38:18,280 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883184453] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:18,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:18,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:38:18,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447922510] [2021-06-05 06:38:18,281 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:38:18,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:18,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:38:18,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:38:18,282 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 06:38:18,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:18,808 INFO L93 Difference]: Finished difference Result 2474 states and 7308 transitions. [2021-06-05 06:38:18,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:38:18,809 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 06:38:18,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:18,813 INFO L225 Difference]: With dead ends: 2474 [2021-06-05 06:38:18,813 INFO L226 Difference]: Without dead ends: 2470 [2021-06-05 06:38:18,814 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 616 ImplicationChecksByTransitivity, 309.0ms TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:38:18,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-06-05 06:38:18,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 845. [2021-06-05 06:38:18,842 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 06:38:18,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 2783 transitions. [2021-06-05 06:38:18,844 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 2783 transitions. Word has length 24 [2021-06-05 06:38:18,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:18,844 INFO L482 AbstractCegarLoop]: Abstraction has 845 states and 2783 transitions. [2021-06-05 06:38:18,844 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 06:38:18,844 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 2783 transitions. [2021-06-05 06:38:18,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:18,846 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:18,846 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 06:38:19,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:19,068 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:19,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:19,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1791751889, now seen corresponding path program 18 times [2021-06-05 06:38:19,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:19,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821342900] [2021-06-05 06:38:19,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:19,108 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 06:38:19,108 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:19,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821342900] [2021-06-05 06:38:19,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821342900] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:19,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290756592] [2021-06-05 06:38:19,108 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) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:19,150 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:38:19,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:19,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:19,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:19,243 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 06:38:19,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290756592] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:19,243 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:19,243 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:19,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722730820] [2021-06-05 06:38:19,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:19,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:19,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:19,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:19,244 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 06:38:19,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:19,805 INFO L93 Difference]: Finished difference Result 2514 states and 7408 transitions. [2021-06-05 06:38:19,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 06:38:19,806 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 06:38:19,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:19,811 INFO L225 Difference]: With dead ends: 2514 [2021-06-05 06:38:19,812 INFO L226 Difference]: Without dead ends: 2514 [2021-06-05 06:38:19,812 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 330.2ms TimeCoverageRelationStatistics Valid=480, Invalid=1590, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:38:19,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2021-06-05 06:38:19,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 853. [2021-06-05 06:38:19,839 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 06:38:19,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2815 transitions. [2021-06-05 06:38:19,842 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2815 transitions. Word has length 24 [2021-06-05 06:38:19,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:19,842 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2815 transitions. [2021-06-05 06:38:19,842 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 06:38:19,842 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2815 transitions. [2021-06-05 06:38:19,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:19,844 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:19,844 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 06:38:20,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-06-05 06:38:20,066 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:20,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:20,067 INFO L82 PathProgramCache]: Analyzing trace with hash -148712735, now seen corresponding path program 19 times [2021-06-05 06:38:20,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:20,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663392848] [2021-06-05 06:38:20,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:20,103 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 06:38:20,104 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:20,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663392848] [2021-06-05 06:38:20,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663392848] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:20,104 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885159269] [2021-06-05 06:38:20,104 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 06:38:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:20,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:20,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:20,204 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 06:38:20,204 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885159269] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:20,204 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:20,204 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:20,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80310042] [2021-06-05 06:38:20,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:20,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:20,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:20,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:20,206 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 06:38:20,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:20,781 INFO L93 Difference]: Finished difference Result 2332 states and 6984 transitions. [2021-06-05 06:38:20,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:38:20,781 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 06:38:20,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:20,787 INFO L225 Difference]: With dead ends: 2332 [2021-06-05 06:38:20,787 INFO L226 Difference]: Without dead ends: 2328 [2021-06-05 06:38:20,788 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 343.5ms TimeCoverageRelationStatistics Valid=460, Invalid=1432, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:38:20,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2328 states. [2021-06-05 06:38:20,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2328 to 853. [2021-06-05 06:38:20,813 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 06:38:20,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 2813 transitions. [2021-06-05 06:38:20,815 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 2813 transitions. Word has length 24 [2021-06-05 06:38:20,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:20,815 INFO L482 AbstractCegarLoop]: Abstraction has 853 states and 2813 transitions. [2021-06-05 06:38:20,815 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 06:38:20,815 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 2813 transitions. [2021-06-05 06:38:20,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:20,817 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:20,817 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 06:38:21,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-06-05 06:38:21,037 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:21,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:21,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1060998287, now seen corresponding path program 3 times [2021-06-05 06:38:21,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:21,037 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724480147] [2021-06-05 06:38:21,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:21,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:21,071 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 06:38:21,071 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:21,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724480147] [2021-06-05 06:38:21,071 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724480147] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:21,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246543331] [2021-06-05 06:38:21,072 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 06:38:21,107 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 06:38:21,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:21,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-05 06:38:21,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:21,147 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 06:38:21,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246543331] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:21,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:21,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 06:38:21,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846851073] [2021-06-05 06:38:21,148 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 06:38:21,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:21,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 06:38:21,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 06:38:21,148 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 06:38:21,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:21,213 INFO L93 Difference]: Finished difference Result 929 states and 3034 transitions. [2021-06-05 06:38:21,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 06:38:21,214 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 06:38:21,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:21,216 INFO L225 Difference]: With dead ends: 929 [2021-06-05 06:38:21,216 INFO L226 Difference]: Without dead ends: 929 [2021-06-05 06:38:21,216 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 48.7ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:38:21,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-06-05 06:38:21,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 780. [2021-06-05 06:38:21,229 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 06:38:21,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2573 transitions. [2021-06-05 06:38:21,232 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2573 transitions. Word has length 24 [2021-06-05 06:38:21,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:21,232 INFO L482 AbstractCegarLoop]: Abstraction has 780 states and 2573 transitions. [2021-06-05 06:38:21,232 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 06:38:21,232 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2573 transitions. [2021-06-05 06:38:21,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:21,234 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:21,234 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 06:38:21,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:21,449 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:21,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:21,449 INFO L82 PathProgramCache]: Analyzing trace with hash -130798543, now seen corresponding path program 20 times [2021-06-05 06:38:21,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:21,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024891478] [2021-06-05 06:38:21,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:21,482 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 06:38:21,482 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:21,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024891478] [2021-06-05 06:38:21,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024891478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:21,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613540761] [2021-06-05 06:38:21,483 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) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:21,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:21,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:21,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:21,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:21,563 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 06:38:21,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613540761] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:21,563 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:21,563 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 06:38:21,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471167608] [2021-06-05 06:38:21,564 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:38:21,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:21,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:38:21,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:38:21,565 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 06:38:21,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:21,813 INFO L93 Difference]: Finished difference Result 1555 states and 4761 transitions. [2021-06-05 06:38:21,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:38:21,813 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 06:38:21,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:21,816 INFO L225 Difference]: With dead ends: 1555 [2021-06-05 06:38:21,816 INFO L226 Difference]: Without dead ends: 1555 [2021-06-05 06:38:21,816 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 150.5ms TimeCoverageRelationStatistics Valid=186, Invalid=516, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:38:21,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2021-06-05 06:38:21,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 842. [2021-06-05 06:38:21,833 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 06:38:21,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 2772 transitions. [2021-06-05 06:38:21,835 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 2772 transitions. Word has length 24 [2021-06-05 06:38:21,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:21,835 INFO L482 AbstractCegarLoop]: Abstraction has 842 states and 2772 transitions. [2021-06-05 06:38:21,835 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 06:38:21,836 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 2772 transitions. [2021-06-05 06:38:21,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:21,837 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:21,837 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 06:38:22,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-06-05 06:38:22,053 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:22,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:22,053 INFO L82 PathProgramCache]: Analyzing trace with hash 1771880909, now seen corresponding path program 21 times [2021-06-05 06:38:22,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:22,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082782673] [2021-06-05 06:38:22,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:22,081 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 06:38:22,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:22,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082782673] [2021-06-05 06:38:22,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082782673] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:22,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65031856] [2021-06-05 06:38:22,081 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 06:38:22,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:38:22,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:22,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:22,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:22,178 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 06:38:22,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65031856] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:22,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:22,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 06:38:22,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660560218] [2021-06-05 06:38:22,179 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 06:38:22,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:22,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 06:38:22,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 06:38:22,182 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 06:38:22,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:22,399 INFO L93 Difference]: Finished difference Result 1605 states and 4891 transitions. [2021-06-05 06:38:22,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 06:38:22,399 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 06:38:22,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:22,402 INFO L225 Difference]: With dead ends: 1605 [2021-06-05 06:38:22,402 INFO L226 Difference]: Without dead ends: 1605 [2021-06-05 06:38:22,402 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 119.6ms TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2021-06-05 06:38:22,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2021-06-05 06:38:22,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 896. [2021-06-05 06:38:22,418 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 06:38:22,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2945 transitions. [2021-06-05 06:38:22,420 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2945 transitions. Word has length 24 [2021-06-05 06:38:22,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:22,420 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2945 transitions. [2021-06-05 06:38:22,420 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 06:38:22,420 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2945 transitions. [2021-06-05 06:38:22,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:22,422 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:22,422 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 06:38:22,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:22,644 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:22,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:22,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1727059767, now seen corresponding path program 22 times [2021-06-05 06:38:22,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:22,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691301373] [2021-06-05 06:38:22,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:22,673 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 06:38:22,673 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:22,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691301373] [2021-06-05 06:38:22,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691301373] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:22,673 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124212905] [2021-06-05 06:38:22,673 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 06:38:22,700 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:38:22,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:22,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:22,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:22,746 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 06:38:22,746 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124212905] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:22,746 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:22,747 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-06-05 06:38:22,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111672763] [2021-06-05 06:38:22,747 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 06:38:22,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:22,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 06:38:22,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-06-05 06:38:22,747 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 06:38:22,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:22,934 INFO L93 Difference]: Finished difference Result 1524 states and 4690 transitions. [2021-06-05 06:38:22,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:38:22,935 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 06:38:22,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:22,937 INFO L225 Difference]: With dead ends: 1524 [2021-06-05 06:38:22,937 INFO L226 Difference]: Without dead ends: 1520 [2021-06-05 06:38:22,937 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2021-06-05 06:38:22,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2021-06-05 06:38:22,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 896. [2021-06-05 06:38:22,949 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 06:38:22,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 2943 transitions. [2021-06-05 06:38:22,952 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 2943 transitions. Word has length 24 [2021-06-05 06:38:22,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:22,952 INFO L482 AbstractCegarLoop]: Abstraction has 896 states and 2943 transitions. [2021-06-05 06:38:22,952 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 06:38:22,952 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 2943 transitions. [2021-06-05 06:38:22,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:22,954 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:22,954 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] [2021-06-05 06:38:23,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2021-06-05 06:38:23,165 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:23,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:23,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1970570871, now seen corresponding path program 23 times [2021-06-05 06:38:23,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:23,165 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552301025] [2021-06-05 06:38:23,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:23,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:23,205 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 06:38:23,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:23,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552301025] [2021-06-05 06:38:23,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552301025] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:23,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529949859] [2021-06-05 06:38:23,206 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 06:38:23,246 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:38:23,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:23,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:23,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:23,287 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 06:38:23,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529949859] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:23,287 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:23,287 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 06:38:23,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959802468] [2021-06-05 06:38:23,287 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:38:23,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:23,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:38:23,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:38:23,288 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 06:38:23,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:23,489 INFO L93 Difference]: Finished difference Result 1508 states and 4652 transitions. [2021-06-05 06:38:23,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:38:23,489 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 06:38:23,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:23,492 INFO L225 Difference]: With dead ends: 1508 [2021-06-05 06:38:23,492 INFO L226 Difference]: Without dead ends: 1496 [2021-06-05 06:38:23,492 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 110.1ms TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:38:23,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-05 06:38:23,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 904. [2021-06-05 06:38:23,507 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 06:38:23,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 2959 transitions. [2021-06-05 06:38:23,508 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 2959 transitions. Word has length 24 [2021-06-05 06:38:23,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:23,509 INFO L482 AbstractCegarLoop]: Abstraction has 904 states and 2959 transitions. [2021-06-05 06:38:23,509 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 06:38:23,509 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 2959 transitions. [2021-06-05 06:38:23,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:23,510 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:23,511 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 06:38:23,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:23,721 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:23,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:23,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1797976141, now seen corresponding path program 24 times [2021-06-05 06:38:23,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:23,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126887650] [2021-06-05 06:38:23,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:23,755 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 06:38:23,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:23,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126887650] [2021-06-05 06:38:23,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126887650] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:23,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015930555] [2021-06-05 06:38:23,755 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 06:38:23,803 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:38:23,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:23,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:23,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:23,877 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 06:38:23,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015930555] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:23,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:23,877 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:23,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541023615] [2021-06-05 06:38:23,877 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:23,877 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:23,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:23,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:23,878 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 06:38:24,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:24,319 INFO L93 Difference]: Finished difference Result 2412 states and 7565 transitions. [2021-06-05 06:38:24,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:38:24,319 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 06:38:24,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:24,323 INFO L225 Difference]: With dead ends: 2412 [2021-06-05 06:38:24,323 INFO L226 Difference]: Without dead ends: 2412 [2021-06-05 06:38:24,324 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 283.5ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:38:24,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-06-05 06:38:24,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 960. [2021-06-05 06:38:24,345 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 06:38:24,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 3229 transitions. [2021-06-05 06:38:24,348 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 3229 transitions. Word has length 24 [2021-06-05 06:38:24,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:24,348 INFO L482 AbstractCegarLoop]: Abstraction has 960 states and 3229 transitions. [2021-06-05 06:38:24,348 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 06:38:24,348 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 3229 transitions. [2021-06-05 06:38:24,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:24,350 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:24,350 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 06:38:24,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-06-05 06:38:24,565 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:24,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:24,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1930039075, now seen corresponding path program 25 times [2021-06-05 06:38:24,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:24,565 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807157776] [2021-06-05 06:38:24,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:24,600 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 06:38:24,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:24,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807157776] [2021-06-05 06:38:24,601 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807157776] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:24,601 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971592821] [2021-06-05 06:38:24,601 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 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 06:38:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:24,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:24,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:24,700 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 06:38:24,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971592821] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:24,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:24,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:24,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15123096] [2021-06-05 06:38:24,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:24,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:24,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:24,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:24,701 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 06:38:25,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:25,141 INFO L93 Difference]: Finished difference Result 2335 states and 7372 transitions. [2021-06-05 06:38:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:38:25,141 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 06:38:25,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:25,144 INFO L225 Difference]: With dead ends: 2335 [2021-06-05 06:38:25,144 INFO L226 Difference]: Without dead ends: 2335 [2021-06-05 06:38:25,144 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 284.3ms TimeCoverageRelationStatistics Valid=358, Invalid=1124, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:38:25,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2335 states. [2021-06-05 06:38:25,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2335 to 957. [2021-06-05 06:38:25,159 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 06:38:25,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 06:38:25,160 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 06:38:25,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:25,162 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 06:38:25,162 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 06:38:25,162 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 06:38:25,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:25,163 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:25,163 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 06:38:25,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:25,369 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:25,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:25,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1192582363, now seen corresponding path program 26 times [2021-06-05 06:38:25,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:25,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953256059] [2021-06-05 06:38:25,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:25,400 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 06:38:25,400 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:25,400 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953256059] [2021-06-05 06:38:25,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953256059] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:25,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258148419] [2021-06-05 06:38:25,401 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 06:38:25,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:25,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:25,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:25,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:25,488 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 06:38:25,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258148419] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:25,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:25,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:38:25,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554429089] [2021-06-05 06:38:25,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:38:25,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:25,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:38:25,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:38:25,490 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 06:38:25,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:25,845 INFO L93 Difference]: Finished difference Result 2285 states and 7121 transitions. [2021-06-05 06:38:25,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 06:38:25,846 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 06:38:25,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:25,849 INFO L225 Difference]: With dead ends: 2285 [2021-06-05 06:38:25,849 INFO L226 Difference]: Without dead ends: 2285 [2021-06-05 06:38:25,850 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 219.7ms TimeCoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:38:25,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2285 states. [2021-06-05 06:38:25,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2285 to 963. [2021-06-05 06:38:25,866 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 06:38:25,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions. [2021-06-05 06:38:25,868 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24 [2021-06-05 06:38:25,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:25,868 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions. [2021-06-05 06:38:25,868 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 06:38:25,868 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions. [2021-06-05 06:38:25,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:25,870 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:25,870 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 06:38:26,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-06-05 06:38:26,073 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:26,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:26,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1273958451, now seen corresponding path program 27 times [2021-06-05 06:38:26,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:26,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195832034] [2021-06-05 06:38:26,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:26,103 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 06:38:26,103 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:26,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195832034] [2021-06-05 06:38:26,103 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195832034] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:26,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461022022] [2021-06-05 06:38:26,103 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 06:38:26,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:38:26,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:26,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:26,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:26,199 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 06:38:26,199 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461022022] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:26,199 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:26,199 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:38:26,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064564137] [2021-06-05 06:38:26,200 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:38:26,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:26,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:38:26,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:38:26,201 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 06:38:26,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:26,531 INFO L93 Difference]: Finished difference Result 2176 states and 6849 transitions. [2021-06-05 06:38:26,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:38:26,531 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 06:38:26,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:26,534 INFO L225 Difference]: With dead ends: 2176 [2021-06-05 06:38:26,534 INFO L226 Difference]: Without dead ends: 2172 [2021-06-05 06:38:26,534 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 199.2ms TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:38:26,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2021-06-05 06:38:26,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 957. [2021-06-05 06:38:26,549 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 06:38:26,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 06:38:26,551 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 06:38:26,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:26,551 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 06:38:26,551 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 06:38:26,551 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 06:38:26,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:26,553 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:26,553 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 06:38:26,753 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:26,753 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:26,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:26,754 INFO L82 PathProgramCache]: Analyzing trace with hash -2090351629, now seen corresponding path program 28 times [2021-06-05 06:38:26,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:26,754 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726336882] [2021-06-05 06:38:26,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:26,784 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 06:38:26,784 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:26,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726336882] [2021-06-05 06:38:26,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726336882] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:26,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910023228] [2021-06-05 06:38:26,785 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 06:38:26,806 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:38:26,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:26,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:26,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:26,872 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 06:38:26,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910023228] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:26,872 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:26,872 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:26,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845730785] [2021-06-05 06:38:26,873 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:26,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:26,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:26,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:26,873 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 06:38:27,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:27,179 INFO L93 Difference]: Finished difference Result 2199 states and 6893 transitions. [2021-06-05 06:38:27,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:38:27,179 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 06:38:27,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:27,182 INFO L225 Difference]: With dead ends: 2199 [2021-06-05 06:38:27,182 INFO L226 Difference]: Without dead ends: 2199 [2021-06-05 06:38:27,182 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 210.9ms TimeCoverageRelationStatistics Valid=257, Invalid=799, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:38:27,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2021-06-05 06:38:27,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 963. [2021-06-05 06:38:27,197 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 06:38:27,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 3240 transitions. [2021-06-05 06:38:27,199 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 3240 transitions. Word has length 24 [2021-06-05 06:38:27,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:27,199 INFO L482 AbstractCegarLoop]: Abstraction has 963 states and 3240 transitions. [2021-06-05 06:38:27,199 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 06:38:27,199 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 3240 transitions. [2021-06-05 06:38:27,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:27,200 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:27,200 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 06:38:27,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-06-05 06:38:27,401 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:27,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:27,401 INFO L82 PathProgramCache]: Analyzing trace with hash -447312475, now seen corresponding path program 29 times [2021-06-05 06:38:27,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:27,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546700150] [2021-06-05 06:38:27,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:27,429 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 06:38:27,429 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:27,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546700150] [2021-06-05 06:38:27,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546700150] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:27,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011202603] [2021-06-05 06:38:27,430 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 06:38:27,458 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:38:27,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:27,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:27,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:27,518 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 06:38:27,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011202603] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:27,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:27,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:27,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492323738] [2021-06-05 06:38:27,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:27,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:27,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:27,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:27,519 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 06:38:27,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:27,886 INFO L93 Difference]: Finished difference Result 2156 states and 6791 transitions. [2021-06-05 06:38:27,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:38:27,886 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 06:38:27,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:27,889 INFO L225 Difference]: With dead ends: 2156 [2021-06-05 06:38:27,890 INFO L226 Difference]: Without dead ends: 2152 [2021-06-05 06:38:27,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 229.8ms TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:38:27,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2152 states. [2021-06-05 06:38:27,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2152 to 957. [2021-06-05 06:38:27,911 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 06:38:27,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 3215 transitions. [2021-06-05 06:38:27,913 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 3215 transitions. Word has length 24 [2021-06-05 06:38:27,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:27,914 INFO L482 AbstractCegarLoop]: Abstraction has 957 states and 3215 transitions. [2021-06-05 06:38:27,914 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 06:38:27,914 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 3215 transitions. [2021-06-05 06:38:27,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:27,915 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:27,915 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 06:38:28,128 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-06-05 06:38:28,129 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:28,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:28,129 INFO L82 PathProgramCache]: Analyzing trace with hash 556115509, now seen corresponding path program 30 times [2021-06-05 06:38:28,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:28,129 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987477222] [2021-06-05 06:38:28,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:28,166 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 06:38:28,166 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:28,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987477222] [2021-06-05 06:38:28,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987477222] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:28,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802814930] [2021-06-05 06:38:28,166 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) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:28,194 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:38:28,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:28,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:28,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:28,257 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 06:38:28,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802814930] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:28,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:28,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:38:28,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669751637] [2021-06-05 06:38:28,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:38:28,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:28,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:38:28,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:38:28,260 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 06:38:28,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:28,632 INFO L93 Difference]: Finished difference Result 2097 states and 6377 transitions. [2021-06-05 06:38:28,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 06:38:28,632 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 06:38:28,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:28,634 INFO L225 Difference]: With dead ends: 2097 [2021-06-05 06:38:28,634 INFO L226 Difference]: Without dead ends: 2097 [2021-06-05 06:38:28,635 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 220.3ms TimeCoverageRelationStatistics Valid=273, Invalid=783, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:38:28,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2021-06-05 06:38:28,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 1047. [2021-06-05 06:38:28,652 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 06:38:28,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3534 transitions. [2021-06-05 06:38:28,654 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3534 transitions. Word has length 24 [2021-06-05 06:38:28,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:28,654 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3534 transitions. [2021-06-05 06:38:28,654 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 06:38:28,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3534 transitions. [2021-06-05 06:38:28,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:28,656 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:28,656 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 06:38:28,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-06-05 06:38:28,856 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:28,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:28,857 INFO L82 PathProgramCache]: Analyzing trace with hash 637491597, now seen corresponding path program 31 times [2021-06-05 06:38:28,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:28,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193301265] [2021-06-05 06:38:28,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:28,886 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 06:38:28,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:28,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193301265] [2021-06-05 06:38:28,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193301265] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:28,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643717247] [2021-06-05 06:38:28,887 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 06:38:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:28,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:28,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:28,987 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 06:38:28,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643717247] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:28,987 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:28,987 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:38:28,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916068222] [2021-06-05 06:38:28,988 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:38:28,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:28,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:38:28,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:38:28,989 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 06:38:29,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:29,235 INFO L93 Difference]: Finished difference Result 1963 states and 6051 transitions. [2021-06-05 06:38:29,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:38:29,235 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 06:38:29,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:29,237 INFO L225 Difference]: With dead ends: 1963 [2021-06-05 06:38:29,238 INFO L226 Difference]: Without dead ends: 1959 [2021-06-05 06:38:29,238 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 154.7ms TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:38:29,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2021-06-05 06:38:29,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1047. [2021-06-05 06:38:29,256 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 06:38:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3532 transitions. [2021-06-05 06:38:29,258 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3532 transitions. Word has length 24 [2021-06-05 06:38:29,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:29,259 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3532 transitions. [2021-06-05 06:38:29,259 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 06:38:29,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3532 transitions. [2021-06-05 06:38:29,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:29,261 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:29,261 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 06:38:29,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-06-05 06:38:29,477 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:29,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:29,477 INFO L82 PathProgramCache]: Analyzing trace with hash -877600375, now seen corresponding path program 32 times [2021-06-05 06:38:29,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:29,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849945338] [2021-06-05 06:38:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:29,509 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 06:38:29,510 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:29,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849945338] [2021-06-05 06:38:29,510 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849945338] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:29,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049954121] [2021-06-05 06:38:29,510 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 06:38:29,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:29,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:29,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:29,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:29,580 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 06:38:29,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049954121] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:29,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:29,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:38:29,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372213241] [2021-06-05 06:38:29,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:38:29,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:29,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:38:29,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:38:29,582 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 06:38:29,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:29,761 INFO L93 Difference]: Finished difference Result 1728 states and 5494 transitions. [2021-06-05 06:38:29,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:38:29,761 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 06:38:29,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:29,763 INFO L225 Difference]: With dead ends: 1728 [2021-06-05 06:38:29,763 INFO L226 Difference]: Without dead ends: 1716 [2021-06-05 06:38:29,763 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 106.1ms TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2021-06-05 06:38:29,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2021-06-05 06:38:29,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 1047. [2021-06-05 06:38:29,775 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 06:38:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 3528 transitions. [2021-06-05 06:38:29,777 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 3528 transitions. Word has length 24 [2021-06-05 06:38:29,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:29,777 INFO L482 AbstractCegarLoop]: Abstraction has 1047 states and 3528 transitions. [2021-06-05 06:38:29,777 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 06:38:29,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 3528 transitions. [2021-06-05 06:38:29,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:29,779 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:29,779 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 06:38:29,979 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:29,979 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:29,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:29,980 INFO L82 PathProgramCache]: Analyzing trace with hash 719526341, now seen corresponding path program 33 times [2021-06-05 06:38:29,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:29,980 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416403269] [2021-06-05 06:38:29,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:30,014 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 06:38:30,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:30,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416403269] [2021-06-05 06:38:30,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416403269] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:30,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751212310] [2021-06-05 06:38:30,015 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 06:38:30,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:38:30,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:30,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:30,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:30,117 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 06:38:30,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751212310] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:30,117 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:30,117 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:30,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869658578] [2021-06-05 06:38:30,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:30,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:30,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:30,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:30,118 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 06:38:30,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:30,414 INFO L93 Difference]: Finished difference Result 1821 states and 5719 transitions. [2021-06-05 06:38:30,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:38:30,414 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 06:38:30,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:30,417 INFO L225 Difference]: With dead ends: 1821 [2021-06-05 06:38:30,417 INFO L226 Difference]: Without dead ends: 1821 [2021-06-05 06:38:30,417 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 191.5ms TimeCoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:38:30,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2021-06-05 06:38:30,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1119. [2021-06-05 06:38:30,451 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 06:38:30,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3768 transitions. [2021-06-05 06:38:30,454 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3768 transitions. Word has length 24 [2021-06-05 06:38:30,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:30,454 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3768 transitions. [2021-06-05 06:38:30,454 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 06:38:30,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3768 transitions. [2021-06-05 06:38:30,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:30,456 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:30,456 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 06:38:30,672 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,37 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:30,673 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:30,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:30,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1932401801, now seen corresponding path program 34 times [2021-06-05 06:38:30,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:30,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398795325] [2021-06-05 06:38:30,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:30,704 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 06:38:30,704 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:30,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398795325] [2021-06-05 06:38:30,704 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398795325] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:30,704 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416520556] [2021-06-05 06:38:30,704 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 06:38:30,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:38:30,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:30,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:30,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:30,790 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 06:38:30,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416520556] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:30,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:30,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 06:38:30,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334791766] [2021-06-05 06:38:30,791 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:38:30,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:30,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:38:30,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:38:30,791 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 06:38:31,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:31,014 INFO L93 Difference]: Finished difference Result 1790 states and 5648 transitions. [2021-06-05 06:38:31,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 06:38:31,014 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 06:38:31,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:31,017 INFO L225 Difference]: With dead ends: 1790 [2021-06-05 06:38:31,017 INFO L226 Difference]: Without dead ends: 1786 [2021-06-05 06:38:31,017 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 147.8ms TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2021-06-05 06:38:31,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2021-06-05 06:38:31,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1119. [2021-06-05 06:38:31,032 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 06:38:31,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3766 transitions. [2021-06-05 06:38:31,033 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3766 transitions. Word has length 24 [2021-06-05 06:38:31,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:31,034 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3766 transitions. [2021-06-05 06:38:31,034 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 06:38:31,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3766 transitions. [2021-06-05 06:38:31,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-06-05 06:38:31,035 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:31,035 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 06:38:31,235 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2021-06-05 06:38:31,236 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:31,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:31,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1095108317, now seen corresponding path program 35 times [2021-06-05 06:38:31,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:31,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755283022] [2021-06-05 06:38:31,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:31,266 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 06:38:31,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:31,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755283022] [2021-06-05 06:38:31,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755283022] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:31,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086190236] [2021-06-05 06:38:31,266 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 06:38:31,289 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:38:31,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:31,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:38:31,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:31,346 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 06:38:31,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086190236] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:31,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:31,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 06:38:31,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97072184] [2021-06-05 06:38:31,346 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:38:31,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:31,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:38:31,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:38:31,347 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 06:38:31,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:31,494 INFO L93 Difference]: Finished difference Result 1649 states and 5332 transitions. [2021-06-05 06:38:31,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:38:31,494 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 06:38:31,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:31,496 INFO L225 Difference]: With dead ends: 1649 [2021-06-05 06:38:31,496 INFO L226 Difference]: Without dead ends: 1637 [2021-06-05 06:38:31,496 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 84.9ms TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:38:31,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-06-05 06:38:31,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1119. [2021-06-05 06:38:31,508 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 06:38:31,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 3762 transitions. [2021-06-05 06:38:31,510 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 3762 transitions. Word has length 24 [2021-06-05 06:38:31,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:31,510 INFO L482 AbstractCegarLoop]: Abstraction has 1119 states and 3762 transitions. [2021-06-05 06:38:31,510 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 06:38:31,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 3762 transitions. [2021-06-05 06:38:31,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:31,512 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:31,512 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 06:38:31,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:31,712 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:31,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:31,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1918687339, now seen corresponding path program 4 times [2021-06-05 06:38:31,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:31,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919440738] [2021-06-05 06:38:31,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:32,163 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 06:38:32,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:32,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919440738] [2021-06-05 06:38:32,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919440738] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:32,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770654474] [2021-06-05 06:38:32,164 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 06:38:32,189 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:38:32,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:32,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:38:32,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:32,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,684 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:38:32,685 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:32,692 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:32,699 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:32,706 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,711 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,712 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 33 treesize of output 19 [2021-06-05 06:38:32,713 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:32,719 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:32,726 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:32,735 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:32,741 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:32,747 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,752 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 16 [2021-06-05 06:38:32,753 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 13 [2021-06-05 06:38:32,760 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 16 [2021-06-05 06:38:32,766 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 13 [2021-06-05 06:38:32,772 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:32,776 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:32,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:32,777 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:32,795 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:38:32,798 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 06:38:32,798 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 06:38:32,825 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 06:38:32,825 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770654474] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:32,825 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:32,825 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:38:32,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573733829] [2021-06-05 06:38:32,826 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:38:32,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:32,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:38:32,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:38:32,826 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 06:38:33,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:33,590 INFO L93 Difference]: Finished difference Result 1517 states and 4955 transitions. [2021-06-05 06:38:33,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:38:33,590 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 06:38:33,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:33,592 INFO L225 Difference]: With dead ends: 1517 [2021-06-05 06:38:33,592 INFO L226 Difference]: Without dead ends: 1502 [2021-06-05 06:38:33,593 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 990.9ms TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:38:33,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2021-06-05 06:38:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1141. [2021-06-05 06:38:33,604 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 06:38:33,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 3833 transitions. [2021-06-05 06:38:33,606 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 3833 transitions. Word has length 26 [2021-06-05 06:38:33,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:33,606 INFO L482 AbstractCegarLoop]: Abstraction has 1141 states and 3833 transitions. [2021-06-05 06:38:33,606 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 06:38:33,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 3833 transitions. [2021-06-05 06:38:33,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:33,608 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:33,608 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 06:38:33,809 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:33,809 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:33,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:33,809 INFO L82 PathProgramCache]: Analyzing trace with hash -109710677, now seen corresponding path program 5 times [2021-06-05 06:38:33,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:33,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490539674] [2021-06-05 06:38:33,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:34,267 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 06:38:34,267 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:34,267 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490539674] [2021-06-05 06:38:34,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490539674] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:34,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023919118] [2021-06-05 06:38:34,268 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 06:38:34,293 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:38:34,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:34,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:38:34,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:34,741 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2021-06-05 06:38:34,797 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_3], 2=[A, v_prenex_5]} [2021-06-05 06:38:34,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,802 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 06:38:34,803 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:34,915 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2021-06-05 06:38:34,915 INFO L628 ElimStorePlain]: treesize reduction 86, result has 47.9 percent of original size [2021-06-05 06:38:34,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,919 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:38:34,920 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:34,942 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:34,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:34,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:34,946 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 23 treesize of output 13 [2021-06-05 06:38:34,948 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:34,974 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:34,978 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:38:34,978 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:179, output treesize:15 [2021-06-05 06:38:35,006 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 06:38:35,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023919118] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:35,007 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:35,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:38:35,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886028121] [2021-06-05 06:38:35,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:38:35,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:35,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:38:35,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:38:35,007 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 06:38:35,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:35,994 INFO L93 Difference]: Finished difference Result 1714 states and 5519 transitions. [2021-06-05 06:38:35,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:38:35,994 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 06:38:35,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:35,997 INFO L225 Difference]: With dead ends: 1714 [2021-06-05 06:38:35,997 INFO L226 Difference]: Without dead ends: 1684 [2021-06-05 06:38:35,997 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1267.8ms TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2021-06-05 06:38:35,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2021-06-05 06:38:36,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1168. [2021-06-05 06:38:36,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1167 states have (on average 3.348757497857755) internal successors, (3908), 1167 states have internal predecessors, (3908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:36,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 3908 transitions. [2021-06-05 06:38:36,012 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 3908 transitions. Word has length 26 [2021-06-05 06:38:36,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:36,012 INFO L482 AbstractCegarLoop]: Abstraction has 1168 states and 3908 transitions. [2021-06-05 06:38:36,012 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 06:38:36,012 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 3908 transitions. [2021-06-05 06:38:36,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:36,014 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:36,014 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 06:38:36,221 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:36,222 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:36,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:36,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1481718631, now seen corresponding path program 36 times [2021-06-05 06:38:36,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:36,222 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713982027] [2021-06-05 06:38:36,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:36,633 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 06:38:36,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:36,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713982027] [2021-06-05 06:38:36,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713982027] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:36,634 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251710386] [2021-06-05 06:38:36,634 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 06:38:36,669 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:38:36,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:36,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:38:36,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:37,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:37,344 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:37,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:37,353 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:37,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,360 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,362 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 39 treesize of output 19 [2021-06-05 06:38:37,363 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:37,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,372 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:38:37,373 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:37,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,383 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 34 treesize of output 16 [2021-06-05 06:38:37,384 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:37,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:37,396 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:37,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,404 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 32 treesize of output 16 [2021-06-05 06:38:37,405 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:37,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,409 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:38:37,414 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:37,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,422 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 41 treesize of output 16 [2021-06-05 06:38:37,423 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:37,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:37,432 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:37,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:37,441 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:37,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,445 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:37,450 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:37,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,457 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 39 treesize of output 16 [2021-06-05 06:38:37,458 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:37,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:37,468 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:37,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:37,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:37,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:37,473 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:37,491 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:38:37,493 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 06:38:37,493 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:38:37,518 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 06:38:37,518 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251710386] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:37,518 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:37,518 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:38:37,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55890587] [2021-06-05 06:38:37,519 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:38:37,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:37,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:38:37,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:38:37,519 INFO L87 Difference]: Start difference. First operand 1168 states and 3908 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 06:38:38,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:38,934 INFO L93 Difference]: Finished difference Result 1625 states and 5243 transitions. [2021-06-05 06:38:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 06:38:38,934 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 06:38:38,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:38,937 INFO L225 Difference]: With dead ends: 1625 [2021-06-05 06:38:38,937 INFO L226 Difference]: Without dead ends: 1610 [2021-06-05 06:38:38,937 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1562.9ms TimeCoverageRelationStatistics Valid=235, Invalid=1097, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:38:38,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2021-06-05 06:38:38,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1198. [2021-06-05 06:38:38,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1198 states, 1197 states have (on average 3.3333333333333335) internal successors, (3990), 1197 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:38,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1198 states to 1198 states and 3990 transitions. [2021-06-05 06:38:38,952 INFO L78 Accepts]: Start accepts. Automaton has 1198 states and 3990 transitions. Word has length 26 [2021-06-05 06:38:38,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:38,952 INFO L482 AbstractCegarLoop]: Abstraction has 1198 states and 3990 transitions. [2021-06-05 06:38:38,952 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 06:38:38,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1198 states and 3990 transitions. [2021-06-05 06:38:38,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:38,954 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:38,954 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 06:38:39,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2021-06-05 06:38:39,155 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:39,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:39,155 INFO L82 PathProgramCache]: Analyzing trace with hash -2008201489, now seen corresponding path program 6 times [2021-06-05 06:38:39,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:39,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060386012] [2021-06-05 06:38:39,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:39,493 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 06:38:39,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:39,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060386012] [2021-06-05 06:38:39,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060386012] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:39,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003771734] [2021-06-05 06:38:39,493 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 06:38:39,518 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:38:39,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:39,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:38:39,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:39,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:39,814 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:39,814 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 06:38:39,815 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:39,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:39,826 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:39,827 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 06:38:39,831 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:39,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:39,840 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:39,840 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 06:38:39,841 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:39,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:39,852 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:39,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 27 [2021-06-05 06:38:39,858 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:39,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:39,870 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:39,871 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 28 treesize of output 24 [2021-06-05 06:38:39,876 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:39,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:39,889 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:39,889 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 35 treesize of output 23 [2021-06-05 06:38:39,890 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:39,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:39,899 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:39,899 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 06:38:39,900 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:39,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:39,908 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:39,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:39,909 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:39,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:39,919 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:39,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 1 [2021-06-05 06:38:39,919 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:39,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:39,932 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:39,932 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 28 treesize of output 20 [2021-06-05 06:38:39,934 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:39,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:39,944 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:39,945 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 35 treesize of output 23 [2021-06-05 06:38:39,946 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:39,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:39,958 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:39,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 1 [2021-06-05 06:38:39,960 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:39,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:39,972 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:39,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:38:39,973 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:39,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:39,984 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:39,984 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 06:38:39,986 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:39,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:39,996 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:38:39,996 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 06:38:39,997 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:40,006 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:38:40,006 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 21 treesize of output 17 [2021-06-05 06:38:40,008 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:40,105 INFO L628 ElimStorePlain]: treesize reduction 16, result has 85.6 percent of original size [2021-06-05 06:38:40,107 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 06:38:40,107 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:589, output treesize:95 [2021-06-05 06:38:40,213 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 06:38:40,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003771734] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:40,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:40,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:38:40,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478120455] [2021-06-05 06:38:40,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:38:40,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:40,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:38:40,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:38:40,214 INFO L87 Difference]: Start difference. First operand 1198 states and 3990 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 06:38:41,661 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-06-05 06:38:42,314 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2021-06-05 06:38:42,767 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2021-06-05 06:38:43,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:43,053 INFO L93 Difference]: Finished difference Result 2145 states and 6707 transitions. [2021-06-05 06:38:43,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 06:38:43,053 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 06:38:43,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:43,056 INFO L225 Difference]: With dead ends: 2145 [2021-06-05 06:38:43,056 INFO L226 Difference]: Without dead ends: 2100 [2021-06-05 06:38:43,056 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 2634.6ms TimeCoverageRelationStatistics Valid=366, Invalid=2084, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:38:43,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2021-06-05 06:38:43,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1216. [2021-06-05 06:38:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 1215 states have (on average 3.3390946502057615) internal successors, (4057), 1215 states have internal predecessors, (4057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:43,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 4057 transitions. [2021-06-05 06:38:43,073 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 4057 transitions. Word has length 26 [2021-06-05 06:38:43,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:43,074 INFO L482 AbstractCegarLoop]: Abstraction has 1216 states and 4057 transitions. [2021-06-05 06:38:43,074 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 06:38:43,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 4057 transitions. [2021-06-05 06:38:43,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:43,076 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:43,076 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 06:38:43,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:43,291 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:43,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:43,291 INFO L82 PathProgramCache]: Analyzing trace with hash -457819925, now seen corresponding path program 37 times [2021-06-05 06:38:43,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:43,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915448385] [2021-06-05 06:38:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:43,650 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-06-05 06:38:43,750 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 06:38:43,750 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:43,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915448385] [2021-06-05 06:38:43,750 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915448385] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:43,750 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81318583] [2021-06-05 06:38:43,751 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 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 06:38:43,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:43,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:38:43,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:44,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:44,378 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:44,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,385 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:44,387 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:44,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,394 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 41 treesize of output 13 [2021-06-05 06:38:44,395 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:44,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,404 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 30 treesize of output 16 [2021-06-05 06:38:44,405 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:44,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:44,415 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:44,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:44,424 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:44,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:44,433 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:44,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:44,443 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:44,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,450 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:44,454 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:44,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,459 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,463 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 30 treesize of output 16 [2021-06-05 06:38:44,464 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:44,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:44,473 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:44,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:44,482 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:44,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,487 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:44,491 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:44,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,499 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 37 treesize of output 19 [2021-06-05 06:38:44,500 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:44,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:44,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:44,506 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 28 treesize of output 13 [2021-06-05 06:38:44,507 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:44,526 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:38:44,528 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 06:38:44,528 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:38:44,558 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 06:38:44,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81318583] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:44,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:44,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:38:44,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917343513] [2021-06-05 06:38:44,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:38:44,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:44,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:38:44,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:38:44,559 INFO L87 Difference]: Start difference. First operand 1216 states and 4057 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 06:38:47,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:47,280 INFO L93 Difference]: Finished difference Result 1915 states and 6096 transitions. [2021-06-05 06:38:47,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:38:47,280 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 06:38:47,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:47,283 INFO L225 Difference]: With dead ends: 1915 [2021-06-05 06:38:47,283 INFO L226 Difference]: Without dead ends: 1900 [2021-06-05 06:38:47,283 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 2784.9ms TimeCoverageRelationStatistics Valid=500, Invalid=2362, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 06:38:47,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2021-06-05 06:38:47,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1227. [2021-06-05 06:38:47,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 1226 states have (on average 3.3450244698205545) internal successors, (4101), 1226 states have internal predecessors, (4101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:47,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 4101 transitions. [2021-06-05 06:38:47,299 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 4101 transitions. Word has length 26 [2021-06-05 06:38:47,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:47,300 INFO L482 AbstractCegarLoop]: Abstraction has 1227 states and 4101 transitions. [2021-06-05 06:38:47,300 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 06:38:47,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 4101 transitions. [2021-06-05 06:38:47,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:47,302 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:47,302 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 06:38:47,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:47,517 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:47,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:47,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1434138769, now seen corresponding path program 38 times [2021-06-05 06:38:47,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:47,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710255635] [2021-06-05 06:38:47,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:47,874 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 06:38:47,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:47,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710255635] [2021-06-05 06:38:47,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710255635] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:47,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844669182] [2021-06-05 06:38:47,874 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 06:38:47,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:47,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:47,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 06:38:47,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:48,562 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:38:48,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:48,587 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:48,647 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:38:48,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:48,660 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:48,684 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:38:48,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 1 [2021-06-05 06:38:48,685 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:48,739 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:38:48,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 47 [2021-06-05 06:38:48,749 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:48,791 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-06-05 06:38:48,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 32 [2021-06-05 06:38:48,794 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:48,818 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:38:48,818 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 33 treesize of output 1 [2021-06-05 06:38:48,819 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:48,870 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:38:48,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 47 [2021-06-05 06:38:48,879 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:48,925 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:38:48,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:48,936 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:48,972 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-06-05 06:38:48,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 32 [2021-06-05 06:38:48,978 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:49,018 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:38:49,019 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 45 [2021-06-05 06:38:49,031 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:49,079 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:38:49,079 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 26 treesize of output 40 [2021-06-05 06:38:49,085 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:49,108 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:38:49,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 1 [2021-06-05 06:38:49,109 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:49,131 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:38:49,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 1 [2021-06-05 06:38:49,132 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:49,177 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:38:49,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 40 [2021-06-05 06:38:49,185 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:49,228 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:38:49,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 40 [2021-06-05 06:38:49,236 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:49,271 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:38:49,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 40 [2021-06-05 06:38:49,277 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:49,597 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2021-06-05 06:38:49,598 INFO L628 ElimStorePlain]: treesize reduction 296, result has 49.5 percent of original size [2021-06-05 06:38:49,609 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 06:38:49,609 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:833, output treesize:341 [2021-06-05 06:38:49,814 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 42 [2021-06-05 06:38:49,978 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 06:38:49,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844669182] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:49,979 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:49,979 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-06-05 06:38:49,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431634955] [2021-06-05 06:38:49,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 06:38:49,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:49,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 06:38:49,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:38:49,980 INFO L87 Difference]: Start difference. First operand 1227 states and 4101 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 06:38:51,583 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 52 [2021-06-05 06:38:51,982 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 44 [2021-06-05 06:38:52,328 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2021-06-05 06:38:52,749 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2021-06-05 06:38:53,014 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 59 [2021-06-05 06:38:53,512 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 58 [2021-06-05 06:38:53,866 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 57 [2021-06-05 06:38:54,035 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 37 [2021-06-05 06:38:54,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:54,522 INFO L93 Difference]: Finished difference Result 2515 states and 7728 transitions. [2021-06-05 06:38:54,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 06:38:54,522 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 06:38:54,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:54,525 INFO L225 Difference]: With dead ends: 2515 [2021-06-05 06:38:54,525 INFO L226 Difference]: Without dead ends: 2470 [2021-06-05 06:38:54,526 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 4719.4ms TimeCoverageRelationStatistics Valid=695, Invalid=3727, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:38:54,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2021-06-05 06:38:54,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 1399. [2021-06-05 06:38:54,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 3.3125894134477827) internal successors, (4631), 1398 states have internal predecessors, (4631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:54,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 4631 transitions. [2021-06-05 06:38:54,551 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 4631 transitions. Word has length 26 [2021-06-05 06:38:54,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:54,551 INFO L482 AbstractCegarLoop]: Abstraction has 1399 states and 4631 transitions. [2021-06-05 06:38:54,551 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 06:38:54,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 4631 transitions. [2021-06-05 06:38:54,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:54,553 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:54,554 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 06:38:54,775 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable364 [2021-06-05 06:38:54,775 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:54,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:54,776 INFO L82 PathProgramCache]: Analyzing trace with hash 775761299, now seen corresponding path program 7 times [2021-06-05 06:38:54,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:54,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044811639] [2021-06-05 06:38:54,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:55,135 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 06:38:55,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:55,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044811639] [2021-06-05 06:38:55,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044811639] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:55,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390046982] [2021-06-05 06:38:55,135 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 06:38:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:55,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:38:55,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:55,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:55,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,578 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 26 treesize of output 13 [2021-06-05 06:38:55,580 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:55,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:55,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:55,585 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:55,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:55,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 13 [2021-06-05 06:38:55,595 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:55,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:55,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:55,601 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:55,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:55,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 16 [2021-06-05 06:38:55,607 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:55,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:55,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:55,613 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:55,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:55,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,617 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 06:38:55,618 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:55,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:55,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 13 [2021-06-05 06:38:55,628 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:55,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:55,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,633 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 06:38:55,634 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:55,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:55,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:55,647 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:55,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:55,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,652 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:38:55,653 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:55,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:55,656 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:55,658 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:55,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:55,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:55,666 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:55,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:55,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 16 [2021-06-05 06:38:55,671 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:55,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:38:55,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:38:55,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:38:55,674 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:55,691 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:38:55,692 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 06:38:55,692 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 06:38:55,714 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 06:38:55,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390046982] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:55,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:55,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:38:55,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889837770] [2021-06-05 06:38:55,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:38:55,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:55,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:38:55,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:38:55,715 INFO L87 Difference]: Start difference. First operand 1399 states and 4631 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 06:38:56,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:38:56,496 INFO L93 Difference]: Finished difference Result 1804 states and 5851 transitions. [2021-06-05 06:38:56,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 06:38:56,496 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 06:38:56,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:38:56,499 INFO L225 Difference]: With dead ends: 1804 [2021-06-05 06:38:56,500 INFO L226 Difference]: Without dead ends: 1789 [2021-06-05 06:38:56,501 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1032.3ms TimeCoverageRelationStatistics Valid=171, Invalid=641, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:38:56,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2021-06-05 06:38:56,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1410. [2021-06-05 06:38:56,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1409 states have (on average 3.3101490418736694) internal successors, (4664), 1409 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:38:56,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 4664 transitions. [2021-06-05 06:38:56,525 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 4664 transitions. Word has length 26 [2021-06-05 06:38:56,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:38:56,525 INFO L482 AbstractCegarLoop]: Abstraction has 1410 states and 4664 transitions. [2021-06-05 06:38:56,525 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 06:38:56,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 4664 transitions. [2021-06-05 06:38:56,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:38:56,527 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:38:56,527 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 06:38:56,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable509,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:38:56,729 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:38:56,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:38:56,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1252636717, now seen corresponding path program 8 times [2021-06-05 06:38:56,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:38:56,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657260874] [2021-06-05 06:38:56,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:38:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:38:57,176 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 06:38:57,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:38:57,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657260874] [2021-06-05 06:38:57,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657260874] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:57,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458931216] [2021-06-05 06:38:57,176 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 06:38:57,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:38:57,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:38:57,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 06:38:57,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:38:57,566 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-06-05 06:38:57,691 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:57,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 35 [2021-06-05 06:38:57,694 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:57,706 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:38:57,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 19 [2021-06-05 06:38:57,707 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:58,000 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 125 [2021-06-05 06:38:58,001 INFO L628 ElimStorePlain]: treesize reduction 146, result has 72.2 percent of original size [2021-06-05 06:38:58,022 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:38:58,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 24 [2021-06-05 06:38:58,024 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:58,040 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:58,040 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 30 treesize of output 32 [2021-06-05 06:38:58,042 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:58,293 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 123 [2021-06-05 06:38:58,293 INFO L628 ElimStorePlain]: treesize reduction 31, result has 91.5 percent of original size [2021-06-05 06:38:58,308 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:58,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:58,313 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:58,429 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-05 06:38:58,430 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:58,447 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:38:58,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:58,448 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:58,572 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2021-06-05 06:38:58,573 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:58,591 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:38:58,591 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:38:58,594 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:58,702 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 06:38:58,702 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:58,722 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:38:58,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:38:58,730 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:58,832 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 06:38:58,832 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:58,850 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:38:58,851 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:38:58,852 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:58,954 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-05 06:38:58,954 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:58,970 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:38:58,970 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:38:58,971 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:38:59,067 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:38:59,082 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 06:38:59,083 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:563, output treesize:331 [2021-06-05 06:38:59,239 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 27 [2021-06-05 06:38:59,298 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 06:38:59,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458931216] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:38:59,298 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:38:59,298 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-05 06:38:59,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737393151] [2021-06-05 06:38:59,299 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:38:59,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:38:59,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:38:59,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:38:59,299 INFO L87 Difference]: Start difference. First operand 1410 states and 4664 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 06:39:00,646 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-06-05 06:39:00,846 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2021-06-05 06:39:01,202 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2021-06-05 06:39:01,498 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2021-06-05 06:39:01,903 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2021-06-05 06:39:02,346 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2021-06-05 06:39:02,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:02,477 INFO L93 Difference]: Finished difference Result 2138 states and 6778 transitions. [2021-06-05 06:39:02,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:39:02,477 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 06:39:02,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:02,480 INFO L225 Difference]: With dead ends: 2138 [2021-06-05 06:39:02,480 INFO L226 Difference]: Without dead ends: 2108 [2021-06-05 06:39:02,481 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 3455.7ms TimeCoverageRelationStatistics Valid=295, Invalid=1685, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 06:39:02,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2021-06-05 06:39:02,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 1416. [2021-06-05 06:39:02,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1415 states have (on average 3.3123674911660776) internal successors, (4687), 1415 states have internal predecessors, (4687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:02,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 4687 transitions. [2021-06-05 06:39:02,500 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 4687 transitions. Word has length 26 [2021-06-05 06:39:02,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:02,501 INFO L482 AbstractCegarLoop]: Abstraction has 1416 states and 4687 transitions. [2021-06-05 06:39:02,501 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 06:39:02,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 4687 transitions. [2021-06-05 06:39:02,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:02,503 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:02,503 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 06:39:02,716 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable553 [2021-06-05 06:39:02,717 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:02,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:02,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1104920871, now seen corresponding path program 9 times [2021-06-05 06:39:02,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:02,717 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743871582] [2021-06-05 06:39:02,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:02,979 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 06:39:02,980 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:02,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743871582] [2021-06-05 06:39:02,980 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743871582] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:02,980 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583824257] [2021-06-05 06:39:02,980 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 06:39:03,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:39:03,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:03,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:39:03,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:03,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:03,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:03,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:03,678 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:03,778 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2021-06-05 06:39:03,779 INFO L628 ElimStorePlain]: treesize reduction 130, result has 44.0 percent of original size [2021-06-05 06:39:03,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:03,783 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 23 treesize of output 13 [2021-06-05 06:39:03,784 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:03,811 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:03,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:03,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:03,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:03,820 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:03,845 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:03,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:03,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:03,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:03,850 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:03,870 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:03,872 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 4 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:39:03,872 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 12 variables, input treesize:265, output treesize:29 [2021-06-05 06:39:03,912 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 06:39:03,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583824257] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:03,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:03,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:39:03,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856499181] [2021-06-05 06:39:03,913 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:39:03,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:03,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:39:03,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:39:03,914 INFO L87 Difference]: Start difference. First operand 1416 states and 4687 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 06:39:04,473 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 46 [2021-06-05 06:39:04,697 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2021-06-05 06:39:04,872 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2021-06-05 06:39:05,218 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2021-06-05 06:39:05,373 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2021-06-05 06:39:05,641 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 84 [2021-06-05 06:39:05,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:05,740 INFO L93 Difference]: Finished difference Result 2242 states and 7149 transitions. [2021-06-05 06:39:05,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:39:05,741 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 06:39:05,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:05,744 INFO L225 Difference]: With dead ends: 2242 [2021-06-05 06:39:05,744 INFO L226 Difference]: Without dead ends: 2212 [2021-06-05 06:39:05,745 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 2059.1ms TimeCoverageRelationStatistics Valid=286, Invalid=1046, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:39:05,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2021-06-05 06:39:05,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 1446. [2021-06-05 06:39:05,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1445 states have (on average 3.322491349480969) internal successors, (4801), 1445 states have internal predecessors, (4801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:05,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 4801 transitions. [2021-06-05 06:39:05,766 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 4801 transitions. Word has length 26 [2021-06-05 06:39:05,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:05,766 INFO L482 AbstractCegarLoop]: Abstraction has 1446 states and 4801 transitions. [2021-06-05 06:39:05,766 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 06:39:05,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 4801 transitions. [2021-06-05 06:39:05,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:05,768 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:05,768 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 06:39:05,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable586,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:05,969 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:05,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:05,969 INFO L82 PathProgramCache]: Analyzing trace with hash 937111779, now seen corresponding path program 10 times [2021-06-05 06:39:05,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:05,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436564033] [2021-06-05 06:39:05,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:06,237 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 06:39:06,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:06,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436564033] [2021-06-05 06:39:06,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436564033] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:06,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653551155] [2021-06-05 06:39:06,238 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 06:39:06,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:39:06,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:06,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:39:06,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:06,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:06,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 16 [2021-06-05 06:39:06,615 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:06,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:06,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:06,620 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:06,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:06,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,624 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 28 treesize of output 16 [2021-06-05 06:39:06,625 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:06,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:06,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,630 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 30 treesize of output 16 [2021-06-05 06:39:06,630 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:06,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:06,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:06,636 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:06,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:06,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:06,642 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:06,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:06,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:06,647 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:06,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:06,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,674 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:06,676 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:06,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:06,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:06,681 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:06,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:06,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,685 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 06:39:06,686 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:06,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:06,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,691 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:06,692 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:06,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:06,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 13 [2021-06-05 06:39:06,700 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:06,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:06,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:06,706 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:06,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:06,710 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,712 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 06:39:06,713 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:06,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:06,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:06,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:39:06,718 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:06,741 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:39:06,743 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 06:39:06,743 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 06:39:06,777 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 06:39:06,777 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653551155] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:06,777 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:06,777 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:39:06,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023626094] [2021-06-05 06:39:06,778 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:39:06,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:06,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:39:06,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:39:06,778 INFO L87 Difference]: Start difference. First operand 1446 states and 4801 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 06:39:07,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:07,325 INFO L93 Difference]: Finished difference Result 1753 states and 5743 transitions. [2021-06-05 06:39:07,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:39:07,325 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 06:39:07,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:07,327 INFO L225 Difference]: With dead ends: 1753 [2021-06-05 06:39:07,328 INFO L226 Difference]: Without dead ends: 1738 [2021-06-05 06:39:07,328 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 655.6ms TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:39:07,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2021-06-05 06:39:07,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1455. [2021-06-05 06:39:07,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1454 states have (on average 3.3266850068775793) internal successors, (4837), 1454 states have internal predecessors, (4837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:07,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 4837 transitions. [2021-06-05 06:39:07,344 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 4837 transitions. Word has length 26 [2021-06-05 06:39:07,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:07,344 INFO L482 AbstractCegarLoop]: Abstraction has 1455 states and 4837 transitions. [2021-06-05 06:39:07,344 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 06:39:07,345 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 4837 transitions. [2021-06-05 06:39:07,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:07,347 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:07,347 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 06:39:07,547 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable607,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:07,547 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:07,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:07,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1130404249, now seen corresponding path program 11 times [2021-06-05 06:39:07,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:07,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007740308] [2021-06-05 06:39:07,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:07,770 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 06:39:07,771 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:07,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007740308] [2021-06-05 06:39:07,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007740308] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:07,771 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012062753] [2021-06-05 06:39:07,771 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 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 06:39:07,801 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:39:07,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:07,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:39:07,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:08,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,226 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:08,226 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 20 [2021-06-05 06:39:08,227 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,240 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:08,240 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 30 treesize of output 24 [2021-06-05 06:39:08,241 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,252 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:08,252 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 21 treesize of output 17 [2021-06-05 06:39:08,254 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,262 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:08,262 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 06:39:08,263 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,273 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:08,273 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 06:39:08,276 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,284 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:08,284 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 06:39:08,285 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,293 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:08,293 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 33 treesize of output 19 [2021-06-05 06:39:08,293 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,304 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:08,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 20 [2021-06-05 06:39:08,305 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,313 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:08,313 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 06:39:08,314 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,323 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:08,323 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 24 [2021-06-05 06:39:08,328 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,337 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:08,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:08,338 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,346 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:08,346 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 26 treesize of output 1 [2021-06-05 06:39:08,347 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,354 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:08,354 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 06:39:08,355 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,362 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:08,362 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 06:39:08,363 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,370 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:08,370 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 06:39:08,370 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:08,377 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:08,377 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 21 treesize of output 17 [2021-06-05 06:39:08,379 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:08,466 INFO L628 ElimStorePlain]: treesize reduction 24, result has 82.5 percent of original size [2021-06-05 06:39:08,468 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 06:39:08,469 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:617, output treesize:91 [2021-06-05 06:39:08,552 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 06:39:08,553 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012062753] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:08,553 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:08,553 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:39:08,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979450928] [2021-06-05 06:39:08,553 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:39:08,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:08,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:39:08,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:39:08,554 INFO L87 Difference]: Start difference. First operand 1455 states and 4837 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 06:39:09,803 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2021-06-05 06:39:09,982 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2021-06-05 06:39:10,186 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2021-06-05 06:39:10,749 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2021-06-05 06:39:10,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:10,916 INFO L93 Difference]: Finished difference Result 2493 states and 7968 transitions. [2021-06-05 06:39:10,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:39:10,916 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 06:39:10,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:10,919 INFO L225 Difference]: With dead ends: 2493 [2021-06-05 06:39:10,919 INFO L226 Difference]: Without dead ends: 2463 [2021-06-05 06:39:10,919 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 2226.7ms TimeCoverageRelationStatistics Valid=369, Invalid=1611, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 06:39:10,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2463 states. [2021-06-05 06:39:10,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2463 to 1468. [2021-06-05 06:39:10,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 3.3340149965916837) internal successors, (4891), 1467 states have internal predecessors, (4891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:10,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 4891 transitions. [2021-06-05 06:39:10,941 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 4891 transitions. Word has length 26 [2021-06-05 06:39:10,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:10,941 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 4891 transitions. [2021-06-05 06:39:10,941 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 06:39:10,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 4891 transitions. [2021-06-05 06:39:10,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:10,944 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:10,944 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 06:39:11,165 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable649 [2021-06-05 06:39:11,166 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:11,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:11,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1627125609, now seen corresponding path program 12 times [2021-06-05 06:39:11,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:11,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230805797] [2021-06-05 06:39:11,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:11,476 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 06:39:11,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:11,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230805797] [2021-06-05 06:39:11,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230805797] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:11,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68521175] [2021-06-05 06:39:11,477 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 06:39:11,510 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:39:11,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:11,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:39:11,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:11,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,789 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,795 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:11,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 27 [2021-06-05 06:39:11,796 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,812 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:11,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 1 [2021-06-05 06:39:11,812 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,818 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,827 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:11,827 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 06:39:11,833 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,843 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,850 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:11,850 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 39 treesize of output 19 [2021-06-05 06:39:11,852 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,864 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:11,864 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 06:39:11,865 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,887 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:11,888 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 06:39:11,888 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,902 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:11,902 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 20 [2021-06-05 06:39:11,903 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,916 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:11,916 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 39 treesize of output 1 [2021-06-05 06:39:11,916 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,926 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:11,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:39:11,927 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,938 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:11,938 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 1 [2021-06-05 06:39:11,939 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,949 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:11,949 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 19 [2021-06-05 06:39:11,950 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,960 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:11,960 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 06:39:11,960 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,970 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:11,970 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 16 [2021-06-05 06:39:11,971 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,981 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:11,981 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 16 [2021-06-05 06:39:11,982 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:11,994 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:11,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:39:11,995 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:11,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:11,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:12,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:12,002 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:12,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 1 [2021-06-05 06:39:12,003 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:12,068 INFO L628 ElimStorePlain]: treesize reduction 19, result has 82.2 percent of original size [2021-06-05 06:39:12,069 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:39:12,069 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:689, output treesize:88 [2021-06-05 06:39:12,170 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 06:39:12,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68521175] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:12,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:12,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:39:12,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800422490] [2021-06-05 06:39:12,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:39:12,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:12,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:39:12,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:39:12,171 INFO L87 Difference]: Start difference. First operand 1468 states and 4891 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 06:39:14,125 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2021-06-05 06:39:14,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:14,489 INFO L93 Difference]: Finished difference Result 2313 states and 7429 transitions. [2021-06-05 06:39:14,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 06:39:14,490 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 06:39:14,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:14,493 INFO L225 Difference]: With dead ends: 2313 [2021-06-05 06:39:14,493 INFO L226 Difference]: Without dead ends: 2283 [2021-06-05 06:39:14,493 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 2265.0ms TimeCoverageRelationStatistics Valid=388, Invalid=1868, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 06:39:14,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2021-06-05 06:39:14,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 1477. [2021-06-05 06:39:14,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1476 states have (on average 3.3401084010840107) internal successors, (4930), 1476 states have internal predecessors, (4930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:14,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 4930 transitions. [2021-06-05 06:39:14,529 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 4930 transitions. Word has length 26 [2021-06-05 06:39:14,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:14,529 INFO L482 AbstractCegarLoop]: Abstraction has 1477 states and 4930 transitions. [2021-06-05 06:39:14,529 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 06:39:14,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 4930 transitions. [2021-06-05 06:39:14,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:14,531 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:14,531 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 06:39:14,731 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable696 [2021-06-05 06:39:14,732 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:14,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:14,732 INFO L82 PathProgramCache]: Analyzing trace with hash -158392533, now seen corresponding path program 39 times [2021-06-05 06:39:14,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:14,732 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911413703] [2021-06-05 06:39:14,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:14,991 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 06:39:14,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:14,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911413703] [2021-06-05 06:39:14,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911413703] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:14,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235004376] [2021-06-05 06:39:14,992 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 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 06:39:15,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:39:15,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:15,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:39:15,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:15,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:15,544 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:15,551 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:39:15,558 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:39:15,565 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,572 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 28 treesize of output 13 [2021-06-05 06:39:15,573 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:15,580 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,587 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 13 [2021-06-05 06:39:15,588 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,595 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:15,595 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:15,604 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:15,611 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,619 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 32 treesize of output 16 [2021-06-05 06:39:15,619 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,625 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:15,626 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:15,634 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,640 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:15,641 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,642 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:15,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:15,644 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 39 treesize of output 13 [2021-06-05 06:39:15,645 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:15,664 INFO L628 ElimStorePlain]: treesize reduction 26, result has 44.7 percent of original size [2021-06-05 06:39:15,665 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 06:39:15,665 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:39:15,692 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 06:39:15,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235004376] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:15,692 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:15,692 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 06:39:15,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258861890] [2021-06-05 06:39:15,692 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:39:15,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:15,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:39:15,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:39:15,693 INFO L87 Difference]: Start difference. First operand 1477 states and 4930 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 06:39:16,376 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2021-06-05 06:39:16,845 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-06-05 06:39:17,440 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-06-05 06:39:18,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:18,670 INFO L93 Difference]: Finished difference Result 3323 states and 10316 transitions. [2021-06-05 06:39:18,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:39:18,671 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 06:39:18,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:18,675 INFO L225 Difference]: With dead ends: 3323 [2021-06-05 06:39:18,675 INFO L226 Difference]: Without dead ends: 3278 [2021-06-05 06:39:18,675 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1230 ImplicationChecksByTransitivity, 2653.9ms TimeCoverageRelationStatistics Valid=670, Invalid=3362, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 06:39:18,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3278 states. [2021-06-05 06:39:18,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3278 to 1496. [2021-06-05 06:39:18,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 3.3578595317725752) internal successors, (5020), 1495 states have internal predecessors, (5020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:18,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5020 transitions. [2021-06-05 06:39:18,700 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5020 transitions. Word has length 26 [2021-06-05 06:39:18,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:18,700 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 5020 transitions. [2021-06-05 06:39:18,700 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 06:39:18,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5020 transitions. [2021-06-05 06:39:18,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:18,702 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:18,702 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 06:39:18,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable717,52 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:18,903 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:18,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:18,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1043919835, now seen corresponding path program 40 times [2021-06-05 06:39:18,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:18,903 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126782233] [2021-06-05 06:39:18,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:18,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:19,220 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 06:39:19,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:19,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126782233] [2021-06-05 06:39:19,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126782233] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:19,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568537285] [2021-06-05 06:39:19,221 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 06:39:19,245 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:39:19,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:19,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:39:19,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:19,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,762 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,765 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:19,766 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,770 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:19,775 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,779 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:19,782 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,786 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,788 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:19,789 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,792 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,795 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:39:19,795 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:19,802 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,805 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:19,809 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,816 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:39:19,816 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,822 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:19,823 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,828 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,829 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:19,830 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,836 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 32 treesize of output 16 [2021-06-05 06:39:19,836 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,842 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:19,843 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:19,849 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:19,856 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:19,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:19,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:19,859 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:19,876 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:39:19,877 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 06:39:19,877 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:39:19,904 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 06:39:19,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568537285] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:19,904 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:19,904 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 06:39:19,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197946175] [2021-06-05 06:39:19,904 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:39:19,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:19,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:39:19,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:39:19,905 INFO L87 Difference]: Start difference. First operand 1496 states and 5020 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 06:39:20,709 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2021-06-05 06:39:21,200 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2021-06-05 06:39:21,754 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 63 [2021-06-05 06:39:22,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:22,652 INFO L93 Difference]: Finished difference Result 3094 states and 9789 transitions. [2021-06-05 06:39:22,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:39:22,652 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 06:39:22,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:22,656 INFO L225 Difference]: With dead ends: 3094 [2021-06-05 06:39:22,656 INFO L226 Difference]: Without dead ends: 3049 [2021-06-05 06:39:22,657 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 992 ImplicationChecksByTransitivity, 2614.2ms TimeCoverageRelationStatistics Valid=602, Invalid=2704, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 06:39:22,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3049 states. [2021-06-05 06:39:22,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3049 to 1496. [2021-06-05 06:39:22,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 3.3585284280936456) internal successors, (5021), 1495 states have internal predecessors, (5021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:22,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 5021 transitions. [2021-06-05 06:39:22,682 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 5021 transitions. Word has length 26 [2021-06-05 06:39:22,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:22,682 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 5021 transitions. [2021-06-05 06:39:22,682 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 06:39:22,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 5021 transitions. [2021-06-05 06:39:22,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:22,685 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:22,685 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] [2021-06-05 06:39:22,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable807,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:22,885 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:22,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:22,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1417398809, now seen corresponding path program 41 times [2021-06-05 06:39:22,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:22,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815527669] [2021-06-05 06:39:22,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:23,144 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 06:39:23,144 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:23,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815527669] [2021-06-05 06:39:23,144 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815527669] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:23,144 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715428396] [2021-06-05 06:39:23,144 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 06:39:23,169 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:39:23,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:23,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:39:23,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:23,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,674 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:39:23,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:39:23,679 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:23,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,698 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:23,699 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:39:23,699 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:23,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,730 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 06:39:23,730 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 06:39:23,735 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:23,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,752 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:23,753 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 06:39:23,753 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:23,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,772 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:23,772 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 37 treesize of output 1 [2021-06-05 06:39:23,773 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:23,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,791 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:23,791 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 06:39:23,792 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:23,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,819 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-05 06:39:23,820 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 25 [2021-06-05 06:39:23,821 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:23,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,848 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:23,849 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 06:39:23,856 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:23,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,885 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:39:23,885 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 06:39:23,888 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:23,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,906 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:23,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:39:23,907 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:23,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,933 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-05 06:39:23,934 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 30 treesize of output 25 [2021-06-05 06:39:23,935 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:23,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,954 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:23,954 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 06:39:23,955 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:23,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,972 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:23,972 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 06:39:23,973 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:23,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,990 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:23,990 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 06:39:23,991 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:23,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:23,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:24,003 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:24,003 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 06:39:24,004 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:24,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:24,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:24,012 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:39:24,013 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 06:39:24,013 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:24,088 INFO L628 ElimStorePlain]: treesize reduction 24, result has 79.5 percent of original size [2021-06-05 06:39:24,090 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 06:39:24,090 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:713, output treesize:75 [2021-06-05 06:39:24,164 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 06:39:24,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715428396] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:24,164 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:24,164 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 06:39:24,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973200230] [2021-06-05 06:39:24,164 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:39:24,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:24,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:39:24,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:39:24,165 INFO L87 Difference]: Start difference. First operand 1496 states and 5021 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 06:39:24,941 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2021-06-05 06:39:25,449 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 06:39:25,998 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2021-06-05 06:39:26,668 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 44 [2021-06-05 06:39:27,031 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 44 [2021-06-05 06:39:27,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:27,554 INFO L93 Difference]: Finished difference Result 3560 states and 11117 transitions. [2021-06-05 06:39:27,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 06:39:27,554 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 06:39:27,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:27,569 INFO L225 Difference]: With dead ends: 3560 [2021-06-05 06:39:27,569 INFO L226 Difference]: Without dead ends: 3500 [2021-06-05 06:39:27,570 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1286 ImplicationChecksByTransitivity, 3016.4ms TimeCoverageRelationStatistics Valid=813, Invalid=3347, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 06:39:27,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3500 states. [2021-06-05 06:39:27,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3500 to 1512. [2021-06-05 06:39:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1512 states, 1511 states have (on average 3.370615486432826) internal successors, (5093), 1511 states have internal predecessors, (5093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:27,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1512 states to 1512 states and 5093 transitions. [2021-06-05 06:39:27,595 INFO L78 Accepts]: Start accepts. Automaton has 1512 states and 5093 transitions. Word has length 26 [2021-06-05 06:39:27,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:27,595 INFO L482 AbstractCegarLoop]: Abstraction has 1512 states and 5093 transitions. [2021-06-05 06:39:27,595 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 06:39:27,595 INFO L276 IsEmpty]: Start isEmpty. Operand 1512 states and 5093 transitions. [2021-06-05 06:39:27,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:27,597 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:27,597 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 06:39:27,797 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable903 [2021-06-05 06:39:27,797 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:27,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:27,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1034556623, now seen corresponding path program 13 times [2021-06-05 06:39:27,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:27,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087243616] [2021-06-05 06:39:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:28,135 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 06:39:28,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:28,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087243616] [2021-06-05 06:39:28,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087243616] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:28,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338103984] [2021-06-05 06:39:28,135 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 06:39:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:28,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:39:28,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:28,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:28,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 16 [2021-06-05 06:39:28,507 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:28,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:28,511 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 16 [2021-06-05 06:39:28,512 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:28,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:28,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,517 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 33 treesize of output 19 [2021-06-05 06:39:28,518 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:28,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:28,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:28,523 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:28,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:28,526 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:28,528 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:28,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:28,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:28,533 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:28,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:28,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,539 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 30 treesize of output 13 [2021-06-05 06:39:28,539 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:28,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:28,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:28,544 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:28,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:28,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,565 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 13 [2021-06-05 06:39:28,566 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:28,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:28,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:28,572 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:28,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:28,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:28,577 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:28,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:28,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:28,582 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:28,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:28,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,586 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:39:28,587 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:28,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:28,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,591 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 28 treesize of output 16 [2021-06-05 06:39:28,591 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:28,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:28,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:28,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:28,594 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:28,612 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:39:28,613 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 06:39:28,613 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 06:39:28,634 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 06:39:28,634 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338103984] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:28,634 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:28,634 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:39:28,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617714059] [2021-06-05 06:39:28,635 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:39:28,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:28,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:39:28,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:39:28,635 INFO L87 Difference]: Start difference. First operand 1512 states and 5093 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 06:39:29,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:29,239 INFO L93 Difference]: Finished difference Result 1895 states and 6252 transitions. [2021-06-05 06:39:29,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:39:29,240 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 06:39:29,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:29,242 INFO L225 Difference]: With dead ends: 1895 [2021-06-05 06:39:29,242 INFO L226 Difference]: Without dead ends: 1880 [2021-06-05 06:39:29,242 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 797.9ms TimeCoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:39:29,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2021-06-05 06:39:29,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1520. [2021-06-05 06:39:29,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 1519 states have (on average 3.366688610928242) internal successors, (5114), 1519 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:29,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 5114 transitions. [2021-06-05 06:39:29,268 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 5114 transitions. Word has length 26 [2021-06-05 06:39:29,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:29,268 INFO L482 AbstractCegarLoop]: Abstraction has 1520 states and 5114 transitions. [2021-06-05 06:39:29,268 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 06:39:29,268 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 5114 transitions. [2021-06-05 06:39:29,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:29,271 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:29,271 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 06:39:29,493 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1026 [2021-06-05 06:39:29,493 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:29,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:29,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1195907103, now seen corresponding path program 14 times [2021-06-05 06:39:29,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:29,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103291082] [2021-06-05 06:39:29,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:29,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:29,854 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 06:39:29,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:29,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103291082] [2021-06-05 06:39:29,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103291082] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:29,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805377966] [2021-06-05 06:39:29,854 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 06:39:29,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:39:29,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:29,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:39:29,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:30,243 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:39:30,244 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 21 [2021-06-05 06:39:30,245 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:30,253 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:30,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:30,254 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:30,270 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:30,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:30,271 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:30,279 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:30,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:30,283 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:30,291 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:30,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:30,292 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:30,300 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:30,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:30,301 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:30,318 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:30,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 28 [2021-06-05 06:39:30,325 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:30,338 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:30,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:30,343 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:30,360 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:30,361 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 21 treesize of output 25 [2021-06-05 06:39:30,364 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:30,372 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:30,372 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 28 treesize of output 16 [2021-06-05 06:39:30,373 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:30,391 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:30,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:30,392 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:30,404 INFO L354 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2021-06-05 06:39:30,405 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 19 [2021-06-05 06:39:30,405 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:30,413 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:30,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:30,414 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:30,423 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:30,423 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 1 [2021-06-05 06:39:30,423 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:30,431 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:30,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 1 [2021-06-05 06:39:30,432 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:30,437 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:39:30,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:30,438 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:30,549 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2021-06-05 06:39:30,549 INFO L628 ElimStorePlain]: treesize reduction 4, result has 97.4 percent of original size [2021-06-05 06:39:30,552 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 06:39:30,552 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:697, output treesize:177 [2021-06-05 06:39:30,765 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 06:39:30,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805377966] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:30,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:30,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2021-06-05 06:39:30,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108794303] [2021-06-05 06:39:30,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:39:30,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:30,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:39:30,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:39:30,766 INFO L87 Difference]: Start difference. First operand 1520 states and 5114 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 06:39:31,913 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 52 [2021-06-05 06:39:32,191 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-06-05 06:39:32,406 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2021-06-05 06:39:32,592 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2021-06-05 06:39:33,023 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2021-06-05 06:39:33,402 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 43 [2021-06-05 06:39:33,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:33,612 INFO L93 Difference]: Finished difference Result 2084 states and 6791 transitions. [2021-06-05 06:39:33,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:39:33,612 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 06:39:33,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:33,615 INFO L225 Difference]: With dead ends: 2084 [2021-06-05 06:39:33,615 INFO L226 Difference]: Without dead ends: 2069 [2021-06-05 06:39:33,615 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 2931.8ms TimeCoverageRelationStatistics Valid=323, Invalid=1839, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 06:39:33,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2021-06-05 06:39:33,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1516. [2021-06-05 06:39:33,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 3.3755775577557756) internal successors, (5114), 1515 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:33,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 5114 transitions. [2021-06-05 06:39:33,642 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 5114 transitions. Word has length 26 [2021-06-05 06:39:33,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:33,642 INFO L482 AbstractCegarLoop]: Abstraction has 1516 states and 5114 transitions. [2021-06-05 06:39:33,642 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 06:39:33,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 5114 transitions. [2021-06-05 06:39:33,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:33,644 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:33,644 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, 1, 1] [2021-06-05 06:39:33,846 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1068 [2021-06-05 06:39:33,846 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:33,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:33,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1175939077, now seen corresponding path program 15 times [2021-06-05 06:39:33,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:33,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523952137] [2021-06-05 06:39:33,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:34,110 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 06:39:34,111 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:34,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523952137] [2021-06-05 06:39:34,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523952137] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:34,111 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112043563] [2021-06-05 06:39:34,111 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 06:39:34,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:39:34,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:34,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:39:34,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:34,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:34,490 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:34,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 24 [2021-06-05 06:39:34,492 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:34,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:34,499 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:34,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:34,500 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:34,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:34,511 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:34,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 20 [2021-06-05 06:39:34,512 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:34,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:34,521 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:34,521 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 06:39:34,521 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:34,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:34,532 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:34,532 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 06:39:34,534 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:34,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:34,542 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:34,542 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 33 treesize of output 19 [2021-06-05 06:39:34,543 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:34,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:34,551 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:34,551 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 06:39:34,552 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:34,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:34,561 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:34,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 1 [2021-06-05 06:39:34,562 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:34,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:34,573 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:34,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 16 [2021-06-05 06:39:34,574 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:34,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:34,584 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:34,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:34,586 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:34,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:34,597 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:34,597 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 06:39:34,602 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:34,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:34,611 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:34,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:34,612 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:34,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:34,619 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:34,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:34,620 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:34,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:34,627 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:34,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:34,628 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:34,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:34,638 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:34,638 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 06:39:34,639 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:34,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:34,644 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:34,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:34,645 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:34,716 INFO L628 ElimStorePlain]: treesize reduction 60, result has 57.4 percent of original size [2021-06-05 06:39:34,718 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 06:39:34,718 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:617, output treesize:71 [2021-06-05 06:39:34,814 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 06:39:34,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112043563] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:34,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:34,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-05 06:39:34,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866420409] [2021-06-05 06:39:34,815 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:39:34,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:34,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:39:34,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:39:34,815 INFO L87 Difference]: Start difference. First operand 1516 states and 5114 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 06:39:35,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:35,834 INFO L93 Difference]: Finished difference Result 2050 states and 6744 transitions. [2021-06-05 06:39:35,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:39:35,834 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 06:39:35,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:35,837 INFO L225 Difference]: With dead ends: 2050 [2021-06-05 06:39:35,837 INFO L226 Difference]: Without dead ends: 2035 [2021-06-05 06:39:35,837 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1151.7ms TimeCoverageRelationStatistics Valid=185, Invalid=807, Unknown=0, NotChecked=0, Total=992 [2021-06-05 06:39:35,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2021-06-05 06:39:35,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 1516. [2021-06-05 06:39:35,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 3.3755775577557756) internal successors, (5114), 1515 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:35,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 5114 transitions. [2021-06-05 06:39:35,859 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 5114 transitions. Word has length 26 [2021-06-05 06:39:35,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:35,859 INFO L482 AbstractCegarLoop]: Abstraction has 1516 states and 5114 transitions. [2021-06-05 06:39:35,859 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 06:39:35,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 5114 transitions. [2021-06-05 06:39:35,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:35,862 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:35,862 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 06:39:36,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1122 [2021-06-05 06:39:36,074 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:36,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:36,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1368330285, now seen corresponding path program 16 times [2021-06-05 06:39:36,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:36,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702753456] [2021-06-05 06:39:36,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:36,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:36,426 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 06:39:36,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:36,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702753456] [2021-06-05 06:39:36,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702753456] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:36,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714491259] [2021-06-05 06:39:36,426 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 06:39:36,453 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:39:36,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:36,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:39:36,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:36,883 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 46 [2021-06-05 06:39:36,937 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_38], 2=[A, v_prenex_37]} [2021-06-05 06:39:36,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:36,941 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 06:39:36,942 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:37,038 INFO L628 ElimStorePlain]: treesize reduction 86, result has 47.9 percent of original size [2021-06-05 06:39:37,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:37,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:37,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:37,042 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:37,063 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:37,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:37,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:37,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:37,067 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:37,084 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:37,086 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 06:39:37,086 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:179, output treesize:22 [2021-06-05 06:39:37,118 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 06:39:37,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714491259] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:37,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:37,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:39:37,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887492112] [2021-06-05 06:39:37,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:39:37,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:37,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:39:37,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:39:37,119 INFO L87 Difference]: Start difference. First operand 1516 states and 5114 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 06:39:38,003 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-05 06:39:38,307 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2021-06-05 06:39:38,457 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2021-06-05 06:39:38,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:38,679 INFO L93 Difference]: Finished difference Result 2399 states and 7708 transitions. [2021-06-05 06:39:38,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 06:39:38,680 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 06:39:38,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:38,683 INFO L225 Difference]: With dead ends: 2399 [2021-06-05 06:39:38,683 INFO L226 Difference]: Without dead ends: 2354 [2021-06-05 06:39:38,683 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 1791.1ms TimeCoverageRelationStatistics Valid=238, Invalid=1022, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:39:38,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2354 states. [2021-06-05 06:39:38,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2354 to 1531. [2021-06-05 06:39:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1530 states have (on average 3.3816993464052287) internal successors, (5174), 1530 states have internal predecessors, (5174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:38,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 5174 transitions. [2021-06-05 06:39:38,715 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 5174 transitions. Word has length 26 [2021-06-05 06:39:38,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:38,715 INFO L482 AbstractCegarLoop]: Abstraction has 1531 states and 5174 transitions. [2021-06-05 06:39:38,715 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 06:39:38,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 5174 transitions. [2021-06-05 06:39:38,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:38,717 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:38,717 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 06:39:38,917 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1169,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:38,918 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:38,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:38,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1309104231, now seen corresponding path program 17 times [2021-06-05 06:39:38,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:38,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245337751] [2021-06-05 06:39:38,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:39,179 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 06:39:39,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:39,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245337751] [2021-06-05 06:39:39,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245337751] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:39,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392735597] [2021-06-05 06:39:39,179 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 06:39:39,206 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:39:39,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:39,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:39:39,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:39,534 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-06-05 06:39:39,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:39,639 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:39,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:39,643 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:39,964 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 112 [2021-06-05 06:39:39,965 INFO L628 ElimStorePlain]: treesize reduction 116, result has 75.0 percent of original size [2021-06-05 06:39:39,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:39,990 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:39,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 20 [2021-06-05 06:39:39,992 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:39,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:40,004 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:40,004 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 24 [2021-06-05 06:39:40,005 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:40,231 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105 [2021-06-05 06:39:40,231 INFO L628 ElimStorePlain]: treesize reduction 20, result has 93.6 percent of original size [2021-06-05 06:39:40,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:40,243 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:40,243 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 06:39:40,247 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:40,350 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-06-05 06:39:40,350 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:40,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:40,363 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:40,364 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 24 [2021-06-05 06:39:40,367 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:40,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:40,377 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:40,378 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 24 [2021-06-05 06:39:40,380 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:40,543 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2021-06-05 06:39:40,544 INFO L628 ElimStorePlain]: treesize reduction 16, result has 93.2 percent of original size [2021-06-05 06:39:40,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:40,554 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:40,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:40,556 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:40,632 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:40,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:40,642 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:40,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:40,643 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:40,715 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:40,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:40,725 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:40,725 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 06:39:40,726 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:40,795 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:40,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:40,805 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:40,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:40,806 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:40,872 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:40,877 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 06:39:40,877 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:479, output treesize:150 [2021-06-05 06:39:40,989 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 06:39:40,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392735597] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:40,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:40,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:39:40,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454287342] [2021-06-05 06:39:40,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:39:40,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:40,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:39:40,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:39:40,989 INFO L87 Difference]: Start difference. First operand 1531 states and 5174 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 06:39:42,153 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2021-06-05 06:39:42,322 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2021-06-05 06:39:42,610 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2021-06-05 06:39:43,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:43,101 INFO L93 Difference]: Finished difference Result 2633 states and 8507 transitions. [2021-06-05 06:39:43,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 06:39:43,101 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 06:39:43,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:43,105 INFO L225 Difference]: With dead ends: 2633 [2021-06-05 06:39:43,105 INFO L226 Difference]: Without dead ends: 2603 [2021-06-05 06:39:43,105 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 2135.9ms TimeCoverageRelationStatistics Valid=325, Invalid=1481, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:39:43,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2603 states. [2021-06-05 06:39:43,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2603 to 1532. [2021-06-05 06:39:43,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1531 states have (on average 3.3860222077073807) internal successors, (5184), 1531 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:43,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 5184 transitions. [2021-06-05 06:39:43,136 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 5184 transitions. Word has length 26 [2021-06-05 06:39:43,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:43,136 INFO L482 AbstractCegarLoop]: Abstraction has 1532 states and 5184 transitions. [2021-06-05 06:39:43,136 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 06:39:43,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 5184 transitions. [2021-06-05 06:39:43,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:43,139 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:43,139 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 06:39:43,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1181 [2021-06-05 06:39:43,353 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:43,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:43,353 INFO L82 PathProgramCache]: Analyzing trace with hash 826223339, now seen corresponding path program 18 times [2021-06-05 06:39:43,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:43,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105222774] [2021-06-05 06:39:43,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:43,603 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 06:39:43,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:43,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105222774] [2021-06-05 06:39:43,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105222774] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:43,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129007901] [2021-06-05 06:39:43,604 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 06:39:43,627 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:39:43,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:43,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:39:43,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:43,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:43,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:43,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:43,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:43,964 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:43,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:43,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:43,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:43,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 16 [2021-06-05 06:39:43,969 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:43,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:43,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:43,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:43,974 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:39:43,975 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:43,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:43,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:43,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:43,981 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 30 treesize of output 16 [2021-06-05 06:39:43,981 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:43,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:43,984 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:43,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:43,986 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 30 treesize of output 13 [2021-06-05 06:39:43,987 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:43,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:43,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:43,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:43,993 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 33 treesize of output 19 [2021-06-05 06:39:43,994 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:43,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:43,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:44,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:44,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:44,002 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:44,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:44,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:44,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:44,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:44,010 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:44,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:44,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:44,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:44,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:44,017 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:44,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:44,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:44,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:44,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:44,025 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:44,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:44,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:44,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:44,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:44,032 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:44,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:44,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:44,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:44,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:44,040 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:44,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:44,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:44,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:44,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:44,047 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:44,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:44,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:44,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:44,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:44,052 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:44,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:44,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:44,055 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-06-05 06:39:44,056 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:44,073 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:39:44,074 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 06:39:44,074 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 06:39:44,096 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 06:39:44,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129007901] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:44,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:44,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:39:44,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243619359] [2021-06-05 06:39:44,097 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:39:44,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:44,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:39:44,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:39:44,105 INFO L87 Difference]: Start difference. First operand 1532 states and 5184 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 06:39:44,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:44,999 INFO L93 Difference]: Finished difference Result 2023 states and 6645 transitions. [2021-06-05 06:39:44,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 06:39:45,000 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 06:39:45,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:45,002 INFO L225 Difference]: With dead ends: 2023 [2021-06-05 06:39:45,002 INFO L226 Difference]: Without dead ends: 1998 [2021-06-05 06:39:45,003 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 944.9ms TimeCoverageRelationStatistics Valid=185, Invalid=871, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:39:45,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2021-06-05 06:39:45,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1567. [2021-06-05 06:39:45,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1566 states have (on average 3.3812260536398466) internal successors, (5295), 1566 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:45,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 5295 transitions. [2021-06-05 06:39:45,030 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 5295 transitions. Word has length 26 [2021-06-05 06:39:45,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:45,030 INFO L482 AbstractCegarLoop]: Abstraction has 1567 states and 5295 transitions. [2021-06-05 06:39:45,030 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 06:39:45,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 5295 transitions. [2021-06-05 06:39:45,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:45,032 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:45,032 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 06:39:45,233 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1209,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:45,233 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:45,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:45,233 INFO L82 PathProgramCache]: Analyzing trace with hash -1409101781, now seen corresponding path program 19 times [2021-06-05 06:39:45,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:45,234 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070883787] [2021-06-05 06:39:45,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:45,476 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 06:39:45,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:45,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070883787] [2021-06-05 06:39:45,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070883787] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:45,477 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544054439] [2021-06-05 06:39:45,477 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 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 06:39:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:45,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:39:45,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:45,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,766 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:45,767 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 30 treesize of output 24 [2021-06-05 06:39:45,768 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,776 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:45,776 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 06:39:45,777 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,787 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:45,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:45,788 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,799 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:45,799 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 20 [2021-06-05 06:39:45,800 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,808 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:45,808 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 06:39:45,809 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,816 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:45,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:45,817 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,824 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:45,824 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 06:39:45,825 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,835 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:45,836 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 30 treesize of output 20 [2021-06-05 06:39:45,837 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,845 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:45,845 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 33 treesize of output 19 [2021-06-05 06:39:45,845 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,855 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:45,855 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 30 treesize of output 24 [2021-06-05 06:39:45,858 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,866 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:45,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:45,866 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,874 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:45,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:45,874 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,884 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:45,884 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 06:39:45,885 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,893 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:45,894 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 1 [2021-06-05 06:39:45,894 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,901 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:45,901 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 06:39:45,901 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:45,907 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:45,908 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 06:39:45,911 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:45,998 INFO L628 ElimStorePlain]: treesize reduction 26, result has 82.8 percent of original size [2021-06-05 06:39:46,000 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 06:39:46,000 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:649, output treesize:91 [2021-06-05 06:39:46,088 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 06:39:46,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544054439] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:46,088 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:46,088 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:39:46,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568822066] [2021-06-05 06:39:46,088 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:39:46,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:46,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:39:46,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:39:46,089 INFO L87 Difference]: Start difference. First operand 1567 states and 5295 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 06:39:46,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:46,914 INFO L93 Difference]: Finished difference Result 2240 states and 7336 transitions. [2021-06-05 06:39:46,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:39:46,915 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 06:39:46,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:46,917 INFO L225 Difference]: With dead ends: 2240 [2021-06-05 06:39:46,917 INFO L226 Difference]: Without dead ends: 2215 [2021-06-05 06:39:46,917 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 935.9ms TimeCoverageRelationStatistics Valid=223, Invalid=833, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:39:46,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2021-06-05 06:39:46,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 1570. [2021-06-05 06:39:46,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1570 states, 1569 states have (on average 3.3817718291905674) internal successors, (5306), 1569 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:46,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 5306 transitions. [2021-06-05 06:39:46,938 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 5306 transitions. Word has length 26 [2021-06-05 06:39:46,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:46,938 INFO L482 AbstractCegarLoop]: Abstraction has 1570 states and 5306 transitions. [2021-06-05 06:39:46,938 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 06:39:46,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 5306 transitions. [2021-06-05 06:39:46,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:46,940 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:46,940 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 06:39:47,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1251,61 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:47,141 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:47,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:47,141 INFO L82 PathProgramCache]: Analyzing trace with hash 957187695, now seen corresponding path program 20 times [2021-06-05 06:39:47,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:47,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694550482] [2021-06-05 06:39:47,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:47,436 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 06:39:47,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:47,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694550482] [2021-06-05 06:39:47,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694550482] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:47,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858221484] [2021-06-05 06:39:47,436 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 06:39:47,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:39:47,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:47,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:39:47,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:47,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:47,898 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:39:47,898 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 21 treesize of output 21 [2021-06-05 06:39:47,900 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:47,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:47,914 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:47,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:47,918 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:48,035 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 06:39:48,035 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:48,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:48,056 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:48,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:48,058 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:48,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:48,076 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:48,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:48,079 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:48,190 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-06-05 06:39:48,191 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:48,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:48,216 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:48,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-05 06:39:48,218 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:48,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:48,237 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:39:48,237 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2021-06-05 06:39:48,239 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:48,367 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-05 06:39:48,367 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:48,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:48,382 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:48,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:39:48,387 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:48,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:48,401 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:39:48,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 24 [2021-06-05 06:39:48,402 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:48,492 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:48,512 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 06:39:48,512 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:329, output treesize:220 [2021-06-05 06:39:48,660 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 06:39:48,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858221484] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:48,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:48,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-05 06:39:48,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565304515] [2021-06-05 06:39:48,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:39:48,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:48,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:39:48,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:39:48,662 INFO L87 Difference]: Start difference. First operand 1570 states and 5306 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 06:39:49,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:49,610 INFO L93 Difference]: Finished difference Result 1853 states and 6135 transitions. [2021-06-05 06:39:49,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 06:39:49,610 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 06:39:49,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:49,612 INFO L225 Difference]: With dead ends: 1853 [2021-06-05 06:39:49,612 INFO L226 Difference]: Without dead ends: 1828 [2021-06-05 06:39:49,613 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1100.4ms TimeCoverageRelationStatistics Valid=157, Invalid=773, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:39:49,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2021-06-05 06:39:49,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1583. [2021-06-05 06:39:49,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 3.3874841972187104) internal successors, (5359), 1582 states have internal predecessors, (5359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:49,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 5359 transitions. [2021-06-05 06:39:49,631 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 5359 transitions. Word has length 26 [2021-06-05 06:39:49,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:49,631 INFO L482 AbstractCegarLoop]: Abstraction has 1583 states and 5359 transitions. [2021-06-05 06:39:49,631 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 06:39:49,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 5359 transitions. [2021-06-05 06:39:49,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:49,634 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:49,634 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 06:39:49,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1302,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:49,837 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:49,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:49,837 INFO L82 PathProgramCache]: Analyzing trace with hash 423152783, now seen corresponding path program 21 times [2021-06-05 06:39:49,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:49,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025329842] [2021-06-05 06:39:49,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:50,140 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 06:39:50,140 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:50,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025329842] [2021-06-05 06:39:50,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025329842] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:50,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880389282] [2021-06-05 06:39:50,140 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 06:39:50,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:39:50,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:50,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:39:50,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:50,499 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 06:39:50,757 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_67, v_prenex_66], 3=[v_prenex_68]} [2021-06-05 06:39:50,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:50,761 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 06:39:50,762 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:50,885 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2021-06-05 06:39:50,885 INFO L628 ElimStorePlain]: treesize reduction 123, result has 44.1 percent of original size [2021-06-05 06:39:50,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:50,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:50,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:39:50,890 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:50,915 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:50,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:50,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:39:50,918 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 23 treesize of output 13 [2021-06-05 06:39:50,919 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:50,941 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:50,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:50,944 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 06:39:50,945 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:50,964 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:50,966 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:39:50,966 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:234, output treesize:20 [2021-06-05 06:39:50,991 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 06:39:50,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880389282] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:50,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:50,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:39:50,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169220010] [2021-06-05 06:39:50,992 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:39:50,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:50,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:39:50,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:39:50,992 INFO L87 Difference]: Start difference. First operand 1583 states and 5359 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 06:39:51,704 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-05 06:39:51,921 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 80 [2021-06-05 06:39:52,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:52,141 INFO L93 Difference]: Finished difference Result 2166 states and 7091 transitions. [2021-06-05 06:39:52,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:39:52,141 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 06:39:52,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:52,145 INFO L225 Difference]: With dead ends: 2166 [2021-06-05 06:39:52,145 INFO L226 Difference]: Without dead ends: 2121 [2021-06-05 06:39:52,145 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1333.1ms TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:39:52,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2021-06-05 06:39:52,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 1613. [2021-06-05 06:39:52,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 1612 states have (on average 3.3957816377171217) internal successors, (5474), 1612 states have internal predecessors, (5474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:52,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 5474 transitions. [2021-06-05 06:39:52,174 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 5474 transitions. Word has length 26 [2021-06-05 06:39:52,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:52,174 INFO L482 AbstractCegarLoop]: Abstraction has 1613 states and 5474 transitions. [2021-06-05 06:39:52,174 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 06:39:52,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 5474 transitions. [2021-06-05 06:39:52,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:52,176 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:52,176 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 06:39:52,377 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1362,63 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:52,377 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:52,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:52,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1194379997, now seen corresponding path program 22 times [2021-06-05 06:39:52,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:52,377 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959777067] [2021-06-05 06:39:52,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:52,738 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2021-06-05 06:39:52,792 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 06:39:52,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:52,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959777067] [2021-06-05 06:39:52,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959777067] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:52,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083118671] [2021-06-05 06:39:52,792 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 06:39:52,817 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:39:52,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:52,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:39:52,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:53,108 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-05 06:39:53,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:53,219 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:53,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:53,220 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:53,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:53,232 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:53,232 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 06:39:53,233 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:53,535 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 124 [2021-06-05 06:39:53,535 INFO L628 ElimStorePlain]: treesize reduction 69, result has 84.4 percent of original size [2021-06-05 06:39:53,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:53,547 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:53,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:53,549 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:53,675 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 06:39:53,676 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:53,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:53,691 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:53,691 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 24 [2021-06-05 06:39:53,694 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:53,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:53,707 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:53,707 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 30 treesize of output 24 [2021-06-05 06:39:53,709 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:53,923 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2021-06-05 06:39:53,924 INFO L628 ElimStorePlain]: treesize reduction 18, result has 94.4 percent of original size [2021-06-05 06:39:53,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:53,935 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:53,935 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 28 treesize of output 20 [2021-06-05 06:39:53,936 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,037 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-05 06:39:54,037 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:54,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,047 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:54,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:54,050 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,147 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:54,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,157 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:54,157 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 06:39:54,159 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,250 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:54,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,260 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:54,260 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 06:39:54,263 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,349 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:54,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,361 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:54,361 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 30 treesize of output 24 [2021-06-05 06:39:54,362 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:54,369 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:39:54,369 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 1 [2021-06-05 06:39:54,370 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:54,435 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:54,441 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 06:39:54,441 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 16 variables, input treesize:503, output treesize:150 [2021-06-05 06:39:54,562 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 06:39:54,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083118671] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:54,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:54,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:39:54,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448698000] [2021-06-05 06:39:54,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:39:54,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:54,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:39:54,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:39:54,563 INFO L87 Difference]: Start difference. First operand 1613 states and 5474 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 06:39:55,386 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 06:39:55,533 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 06:39:55,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:55,712 INFO L93 Difference]: Finished difference Result 2386 states and 7813 transitions. [2021-06-05 06:39:55,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 06:39:55,712 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 06:39:55,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:55,716 INFO L225 Difference]: With dead ends: 2386 [2021-06-05 06:39:55,716 INFO L226 Difference]: Without dead ends: 2352 [2021-06-05 06:39:55,716 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1497.1ms TimeCoverageRelationStatistics Valid=239, Invalid=883, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:39:55,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2021-06-05 06:39:55,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 1599. [2021-06-05 06:39:55,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1598 states have (on average 3.392991239048811) internal successors, (5422), 1598 states have internal predecessors, (5422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:55,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 5422 transitions. [2021-06-05 06:39:55,737 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 5422 transitions. Word has length 26 [2021-06-05 06:39:55,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:55,737 INFO L482 AbstractCegarLoop]: Abstraction has 1599 states and 5422 transitions. [2021-06-05 06:39:55,738 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 06:39:55,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 5422 transitions. [2021-06-05 06:39:55,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:55,739 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:55,739 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 06:39:55,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1376,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:55,940 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:55,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:55,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1410644395, now seen corresponding path program 23 times [2021-06-05 06:39:55,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:55,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206688218] [2021-06-05 06:39:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:56,134 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2021-06-05 06:39:56,391 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 06:39:56,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:56,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206688218] [2021-06-05 06:39:56,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206688218] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:56,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325176896] [2021-06-05 06:39:56,392 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 06:39:56,432 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:39:56,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:56,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:39:56,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:56,870 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-06-05 06:39:57,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:57,019 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:57,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:39:57,021 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:57,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:57,034 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:57,035 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 28 treesize of output 20 [2021-06-05 06:39:57,036 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:57,360 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2021-06-05 06:39:57,361 INFO L628 ElimStorePlain]: treesize reduction 10, result has 97.2 percent of original size [2021-06-05 06:39:57,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:57,374 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:57,374 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 30 treesize of output 24 [2021-06-05 06:39:57,376 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:57,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:57,387 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:57,387 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 20 [2021-06-05 06:39:57,388 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:57,520 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 06:39:57,520 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:57,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:57,532 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:57,532 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 06:39:57,534 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:57,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:57,543 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:57,543 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 06:39:57,546 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:57,669 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 06:39:57,670 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:57,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:57,682 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:57,682 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 24 [2021-06-05 06:39:57,685 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:57,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:57,695 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:57,695 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 30 treesize of output 20 [2021-06-05 06:39:57,696 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:57,803 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-05 06:39:57,803 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:57,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:57,815 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:57,815 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 06:39:57,819 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:57,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:39:57,828 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:39:57,828 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 06:39:57,829 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:39:57,920 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:39:57,928 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 06:39:57,928 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:391, output treesize:170 [2021-06-05 06:39:58,068 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 06:39:58,069 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325176896] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:58,069 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:39:58,069 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:39:58,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005294644] [2021-06-05 06:39:58,069 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:39:58,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:39:58,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:39:58,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:39:58,069 INFO L87 Difference]: Start difference. First operand 1599 states and 5422 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 06:39:59,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:39:59,000 INFO L93 Difference]: Finished difference Result 2115 states and 7008 transitions. [2021-06-05 06:39:59,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 06:39:59,000 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 06:39:59,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:39:59,004 INFO L225 Difference]: With dead ends: 2115 [2021-06-05 06:39:59,004 INFO L226 Difference]: Without dead ends: 2090 [2021-06-05 06:39:59,004 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1415.7ms TimeCoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2021-06-05 06:39:59,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2021-06-05 06:39:59,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1599. [2021-06-05 06:39:59,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1598 states have (on average 3.392991239048811) internal successors, (5422), 1598 states have internal predecessors, (5422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:39:59,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 5422 transitions. [2021-06-05 06:39:59,026 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 5422 transitions. Word has length 26 [2021-06-05 06:39:59,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:39:59,026 INFO L482 AbstractCegarLoop]: Abstraction has 1599 states and 5422 transitions. [2021-06-05 06:39:59,026 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 06:39:59,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 5422 transitions. [2021-06-05 06:39:59,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:39:59,028 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:39:59,028 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 06:39:59,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1405,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:39:59,229 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:39:59,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:39:59,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1510554133, now seen corresponding path program 42 times [2021-06-05 06:39:59,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:39:59,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141705971] [2021-06-05 06:39:59,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:39:59,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:39:59,463 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 06:39:59,463 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:39:59,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141705971] [2021-06-05 06:39:59,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141705971] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:39:59,464 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492753230] [2021-06-05 06:39:59,464 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 06:39:59,490 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:39:59,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:39:59,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:39:59,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:39:59,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:00,003 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:00,010 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,014 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,016 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,016 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2021-06-05 06:40:00,018 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:00,025 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:00,032 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:00,039 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,045 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:40:00,046 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,052 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:40:00,053 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:00,060 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,067 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 39 treesize of output 19 [2021-06-05 06:40:00,067 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:00,074 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:40:00,085 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:00,092 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,101 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:40:00,102 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:00,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:00,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:00,106 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:00,124 INFO L628 ElimStorePlain]: treesize reduction 26, result has 44.7 percent of original size [2021-06-05 06:40:00,125 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 06:40:00,125 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:40:00,146 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 06:40:00,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492753230] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:00,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:00,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:40:00,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746037956] [2021-06-05 06:40:00,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:40:00,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:00,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:40:00,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:40:00,147 INFO L87 Difference]: Start difference. First operand 1599 states and 5422 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 06:40:01,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:01,353 INFO L93 Difference]: Finished difference Result 2060 states and 6796 transitions. [2021-06-05 06:40:01,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-06-05 06:40:01,353 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 06:40:01,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:01,356 INFO L225 Difference]: With dead ends: 2060 [2021-06-05 06:40:01,356 INFO L226 Difference]: Without dead ends: 2034 [2021-06-05 06:40:01,356 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 1305.8ms TimeCoverageRelationStatistics Valid=326, Invalid=1480, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:40:01,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2034 states. [2021-06-05 06:40:01,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2034 to 1603. [2021-06-05 06:40:01,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 3.3907615480649187) internal successors, (5432), 1602 states have internal predecessors, (5432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:01,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 5432 transitions. [2021-06-05 06:40:01,376 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 5432 transitions. Word has length 26 [2021-06-05 06:40:01,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:01,376 INFO L482 AbstractCegarLoop]: Abstraction has 1603 states and 5432 transitions. [2021-06-05 06:40:01,376 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 06:40:01,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 5432 transitions. [2021-06-05 06:40:01,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:01,378 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:01,378 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 06:40:01,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1442 [2021-06-05 06:40:01,578 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:01,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:01,579 INFO L82 PathProgramCache]: Analyzing trace with hash -442679569, now seen corresponding path program 43 times [2021-06-05 06:40:01,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:01,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219609686] [2021-06-05 06:40:01,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:01,921 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 06:40:01,921 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:01,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219609686] [2021-06-05 06:40:01,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219609686] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:01,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186606954] [2021-06-05 06:40:01,921 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 06:40:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:01,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:40:01,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:02,257 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_92, v_prenex_96], 5=[v_prenex_94, A]} [2021-06-05 06:40:02,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:02,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:02,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:02,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:40:02,265 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:02,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:02,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:02,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 20 treesize of output 7 [2021-06-05 06:40:02,274 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:02,364 INFO L628 ElimStorePlain]: treesize reduction 133, result has 45.9 percent of original size [2021-06-05 06:40:02,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:02,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:02,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:02,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:02,370 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:02,395 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:02,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:02,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:02,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:02,400 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:02,422 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:02,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:02,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:02,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:02,426 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:02,445 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:02,454 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 06:40:02,455 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:303, output treesize:29 [2021-06-05 06:40:02,498 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 06:40:02,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186606954] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:02,499 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:02,499 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 06:40:02,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620665841] [2021-06-05 06:40:02,499 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:40:02,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:02,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:40:02,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:40:02,500 INFO L87 Difference]: Start difference. First operand 1603 states and 5432 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 06:40:03,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:03,822 INFO L93 Difference]: Finished difference Result 2261 states and 7446 transitions. [2021-06-05 06:40:03,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:40:03,822 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 06:40:03,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:03,825 INFO L225 Difference]: With dead ends: 2261 [2021-06-05 06:40:03,825 INFO L226 Difference]: Without dead ends: 2246 [2021-06-05 06:40:03,826 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 480 ImplicationChecksByTransitivity, 1426.3ms TimeCoverageRelationStatistics Valid=355, Invalid=1451, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:40:03,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2021-06-05 06:40:03,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 1603. [2021-06-05 06:40:03,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 3.3907615480649187) internal successors, (5432), 1602 states have internal predecessors, (5432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:03,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 5432 transitions. [2021-06-05 06:40:03,847 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 5432 transitions. Word has length 26 [2021-06-05 06:40:03,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:03,847 INFO L482 AbstractCegarLoop]: Abstraction has 1603 states and 5432 transitions. [2021-06-05 06:40:03,847 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 06:40:03,847 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 5432 transitions. [2021-06-05 06:40:03,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:03,849 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:03,849 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 06:40:04,050 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1532 [2021-06-05 06:40:04,050 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:04,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:04,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1031054993, now seen corresponding path program 24 times [2021-06-05 06:40:04,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:04,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550228874] [2021-06-05 06:40:04,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:04,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:04,339 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-06-05 06:40:04,457 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 06:40:04,457 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:04,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550228874] [2021-06-05 06:40:04,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550228874] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:04,457 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546301739] [2021-06-05 06:40:04,457 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 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 06:40:04,487 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:40:04,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:04,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:40:04,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:04,886 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-05 06:40:05,386 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:40:05,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:05,390 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:05,723 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 124 [2021-06-05 06:40:05,724 INFO L628 ElimStorePlain]: treesize reduction 126, result has 75.9 percent of original size [2021-06-05 06:40:05,744 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:40:05,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:40:05,748 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:05,889 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 06:40:05,889 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:05,907 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:40:05,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:05,909 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,051 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-05 06:40:06,052 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:06,070 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:40:06,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:06,072 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,209 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 06:40:06,210 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:06,224 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:06,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:06,229 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,359 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-05 06:40:06,360 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:06,378 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:06,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 32 [2021-06-05 06:40:06,381 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,390 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:40:06,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:40:06,391 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,627 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2021-06-05 06:40:06,628 INFO L628 ElimStorePlain]: treesize reduction 21, result has 93.4 percent of original size [2021-06-05 06:40:06,654 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:06,654 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:40:06,657 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,668 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:40:06,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 1 [2021-06-05 06:40:06,669 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,765 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:06,784 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:40:06,784 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 26 treesize of output 28 [2021-06-05 06:40:06,785 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:06,883 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:06,907 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 06:40:06,907 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:539, output treesize:402 [2021-06-05 06:40:07,102 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 37 [2021-06-05 06:40:07,197 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 06:40:07,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546301739] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:07,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:07,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:40:07,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792324901] [2021-06-05 06:40:07,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:40:07,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:07,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:40:07,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:40:07,198 INFO L87 Difference]: Start difference. First operand 1603 states and 5432 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 06:40:07,902 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 48 [2021-06-05 06:40:08,445 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2021-06-05 06:40:08,594 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 35 [2021-06-05 06:40:08,810 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2021-06-05 06:40:09,050 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-06-05 06:40:09,219 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2021-06-05 06:40:09,531 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2021-06-05 06:40:09,854 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2021-06-05 06:40:10,216 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2021-06-05 06:40:10,597 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 88 [2021-06-05 06:40:11,135 WARN L205 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 89 [2021-06-05 06:40:11,355 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2021-06-05 06:40:11,927 WARN L205 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 87 [2021-06-05 06:40:12,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:12,484 INFO L93 Difference]: Finished difference Result 2594 states and 8222 transitions. [2021-06-05 06:40:12,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-06-05 06:40:12,485 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 06:40:12,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:12,488 INFO L225 Difference]: With dead ends: 2594 [2021-06-05 06:40:12,488 INFO L226 Difference]: Without dead ends: 2530 [2021-06-05 06:40:12,488 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 803 ImplicationChecksByTransitivity, 5554.8ms TimeCoverageRelationStatistics Valid=469, Invalid=2183, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 06:40:12,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2021-06-05 06:40:12,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 1635. [2021-06-05 06:40:12,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1634 states have (on average 3.401468788249694) internal successors, (5558), 1634 states have internal predecessors, (5558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:12,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 5558 transitions. [2021-06-05 06:40:12,512 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 5558 transitions. Word has length 26 [2021-06-05 06:40:12,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:12,512 INFO L482 AbstractCegarLoop]: Abstraction has 1635 states and 5558 transitions. [2021-06-05 06:40:12,512 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 06:40:12,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 5558 transitions. [2021-06-05 06:40:12,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:12,514 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:12,514 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 06:40:12,714 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1546,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:12,715 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:12,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:12,715 INFO L82 PathProgramCache]: Analyzing trace with hash 519326571, now seen corresponding path program 44 times [2021-06-05 06:40:12,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:12,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580792535] [2021-06-05 06:40:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:13,217 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 06:40:13,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:13,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580792535] [2021-06-05 06:40:13,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580792535] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:13,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043671150] [2021-06-05 06:40:13,218 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 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 06:40:13,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:40:13,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:13,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-05 06:40:13,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:13,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:13,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:13,837 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:13,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 45 [2021-06-05 06:40:13,841 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:13,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:13,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:13,879 INFO L354 Elim1Store]: treesize reduction 12, result has 55.6 percent of original size [2021-06-05 06:40:13,879 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 06:40:13,884 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:13,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:13,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:13,899 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:13,899 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 06:40:13,899 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:13,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:13,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:13,915 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:13,915 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 37 treesize of output 1 [2021-06-05 06:40:13,915 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:13,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:13,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:13,937 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:13,937 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 06:40:13,943 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:13,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:13,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:13,965 INFO L354 Elim1Store]: treesize reduction 19, result has 29.6 percent of original size [2021-06-05 06:40:13,965 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 26 [2021-06-05 06:40:13,966 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:13,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:13,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:13,988 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-05 06:40:13,988 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 06:40:13,990 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:13,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:13,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:14,014 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-05 06:40:14,015 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 06:40:14,018 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:14,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:14,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:14,033 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:14,033 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 06:40:14,033 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:14,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:14,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:14,048 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:14,048 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 06:40:14,048 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:14,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:14,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:14,063 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:14,063 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 06:40:14,063 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:14,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:14,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:14,078 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:14,079 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:40:14,079 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:14,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:14,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:14,092 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:14,093 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 06:40:14,093 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:14,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:14,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:14,108 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:14,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:40:14,109 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:14,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:14,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:14,124 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:14,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:40:14,124 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:14,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:14,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:14,132 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:40:14,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:40:14,133 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:14,203 INFO L628 ElimStorePlain]: treesize reduction 56, result has 61.4 percent of original size [2021-06-05 06:40:14,205 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 06:40:14,205 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:745, output treesize:71 [2021-06-05 06:40:14,279 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 06:40:14,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043671150] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:14,280 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:14,280 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-06-05 06:40:14,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384226090] [2021-06-05 06:40:14,280 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-05 06:40:14,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:14,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-05 06:40:14,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2021-06-05 06:40:14,280 INFO L87 Difference]: Start difference. First operand 1635 states and 5558 transitions. Second operand has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 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 06:40:16,587 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2021-06-05 06:40:17,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:17,261 INFO L93 Difference]: Finished difference Result 2662 states and 8486 transitions. [2021-06-05 06:40:17,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 06:40:17,262 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 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 06:40:17,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:17,265 INFO L225 Difference]: With dead ends: 2662 [2021-06-05 06:40:17,265 INFO L226 Difference]: Without dead ends: 2618 [2021-06-05 06:40:17,265 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 2944.4ms TimeCoverageRelationStatistics Valid=692, Invalid=3598, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 06:40:17,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2021-06-05 06:40:17,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 1642. [2021-06-05 06:40:17,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1641 states have (on average 3.4021937842778796) internal successors, (5583), 1641 states have internal predecessors, (5583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:17,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 5583 transitions. [2021-06-05 06:40:17,288 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 5583 transitions. Word has length 26 [2021-06-05 06:40:17,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:17,288 INFO L482 AbstractCegarLoop]: Abstraction has 1642 states and 5583 transitions. [2021-06-05 06:40:17,288 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 21 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 06:40:17,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 5583 transitions. [2021-06-05 06:40:17,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:17,300 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:17,300 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 06:40:17,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1624 [2021-06-05 06:40:17,501 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:17,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:17,501 INFO L82 PathProgramCache]: Analyzing trace with hash -456992273, now seen corresponding path program 45 times [2021-06-05 06:40:17,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:17,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745606719] [2021-06-05 06:40:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:17,781 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 06:40:17,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:17,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745606719] [2021-06-05 06:40:17,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745606719] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:17,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028406698] [2021-06-05 06:40:17,781 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 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 06:40:17,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:40:17,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:17,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 06:40:17,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:18,413 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:40:18,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:18,439 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:18,478 INFO L354 Elim1Store]: treesize reduction 25, result has 39.0 percent of original size [2021-06-05 06:40:18,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 34 [2021-06-05 06:40:18,479 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:18,508 INFO L354 Elim1Store]: treesize reduction 29, result has 29.3 percent of original size [2021-06-05 06:40:18,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 [2021-06-05 06:40:18,509 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:18,538 INFO L354 Elim1Store]: treesize reduction 29, result has 29.3 percent of original size [2021-06-05 06:40:18,538 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 30 [2021-06-05 06:40:18,539 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:18,569 INFO L354 Elim1Store]: treesize reduction 29, result has 29.3 percent of original size [2021-06-05 06:40:18,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 [2021-06-05 06:40:18,571 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:18,587 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:40:18,587 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 1 [2021-06-05 06:40:18,588 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:18,642 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:40:18,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 40 [2021-06-05 06:40:18,652 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:18,697 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:40:18,698 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 40 [2021-06-05 06:40:18,705 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:18,726 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:40:18,726 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 1 [2021-06-05 06:40:18,727 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:18,778 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:40:18,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 45 [2021-06-05 06:40:18,789 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:18,806 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:40:18,806 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 06:40:18,807 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:18,825 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:40:18,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 1 [2021-06-05 06:40:18,825 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:18,861 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:40:18,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 40 [2021-06-05 06:40:18,866 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:18,898 INFO L354 Elim1Store]: treesize reduction 26, result has 36.6 percent of original size [2021-06-05 06:40:18,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 33 [2021-06-05 06:40:18,899 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:18,914 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:40:18,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:18,915 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:18,941 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:40:18,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 40 [2021-06-05 06:40:18,949 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:19,199 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2021-06-05 06:40:19,200 INFO L628 ElimStorePlain]: treesize reduction 92, result has 77.5 percent of original size [2021-06-05 06:40:19,205 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 06:40:19,205 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:833, output treesize:358 [2021-06-05 06:40:19,427 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-06-05 06:40:19,530 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 06:40:19,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028406698] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:19,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:19,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-06-05 06:40:19,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673786740] [2021-06-05 06:40:19,530 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 06:40:19,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:19,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 06:40:19,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:40:19,531 INFO L87 Difference]: Start difference. First operand 1642 states and 5583 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 06:40:21,866 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2021-06-05 06:40:22,274 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2021-06-05 06:40:22,432 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2021-06-05 06:40:22,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:22,622 INFO L93 Difference]: Finished difference Result 3238 states and 10236 transitions. [2021-06-05 06:40:22,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 06:40:22,623 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 06:40:22,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:22,627 INFO L225 Difference]: With dead ends: 3238 [2021-06-05 06:40:22,628 INFO L226 Difference]: Without dead ends: 3208 [2021-06-05 06:40:22,628 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1324 ImplicationChecksByTransitivity, 3075.2ms TimeCoverageRelationStatistics Valid=689, Invalid=3733, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:40:22,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3208 states. [2021-06-05 06:40:22,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3208 to 1691. [2021-06-05 06:40:22,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1691 states, 1690 states have (on average 3.4005917159763315) internal successors, (5747), 1690 states have internal predecessors, (5747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:22,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1691 states to 1691 states and 5747 transitions. [2021-06-05 06:40:22,662 INFO L78 Accepts]: Start accepts. Automaton has 1691 states and 5747 transitions. Word has length 26 [2021-06-05 06:40:22,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:22,662 INFO L482 AbstractCegarLoop]: Abstraction has 1691 states and 5747 transitions. [2021-06-05 06:40:22,662 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 06:40:22,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1691 states and 5747 transitions. [2021-06-05 06:40:22,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:22,664 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:22,664 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 06:40:22,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1728,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:22,865 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:22,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:22,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1125767463, now seen corresponding path program 25 times [2021-06-05 06:40:22,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:22,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916322804] [2021-06-05 06:40:22,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:23,205 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 06:40:23,205 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:23,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916322804] [2021-06-05 06:40:23,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916322804] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:23,205 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562227049] [2021-06-05 06:40:23,205 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 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 06:40:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:23,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:40:23,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:23,695 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_134, v_prenex_135]} [2021-06-05 06:40:23,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:23,699 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 06:40:23,700 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:23,798 INFO L628 ElimStorePlain]: treesize reduction 86, result has 47.9 percent of original size [2021-06-05 06:40:23,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:23,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:23,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:40:23,802 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:23,823 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:23,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:23,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:23,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:40:23,827 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:23,845 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:23,846 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-06-05 06:40:23,846 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:179, output treesize:22 [2021-06-05 06:40:23,878 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 06:40:23,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562227049] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:23,879 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:23,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:40:23,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198639368] [2021-06-05 06:40:23,879 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:40:23,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:23,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:40:23,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:40:23,879 INFO L87 Difference]: Start difference. First operand 1691 states and 5747 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 06:40:24,722 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2021-06-05 06:40:24,842 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 06:40:25,024 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-06-05 06:40:25,228 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2021-06-05 06:40:25,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:25,435 INFO L93 Difference]: Finished difference Result 2561 states and 8224 transitions. [2021-06-05 06:40:25,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:40:25,435 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 06:40:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:25,439 INFO L225 Difference]: With dead ends: 2561 [2021-06-05 06:40:25,439 INFO L226 Difference]: Without dead ends: 2516 [2021-06-05 06:40:25,439 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 1755.1ms TimeCoverageRelationStatistics Valid=273, Invalid=987, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:40:25,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2021-06-05 06:40:25,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 1720. [2021-06-05 06:40:25,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1720 states, 1719 states have (on average 3.414194299011053) internal successors, (5869), 1719 states have internal predecessors, (5869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:25,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1720 states to 1720 states and 5869 transitions. [2021-06-05 06:40:25,465 INFO L78 Accepts]: Start accepts. Automaton has 1720 states and 5869 transitions. Word has length 26 [2021-06-05 06:40:25,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:25,465 INFO L482 AbstractCegarLoop]: Abstraction has 1720 states and 5869 transitions. [2021-06-05 06:40:25,465 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 06:40:25,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1720 states and 5869 transitions. [2021-06-05 06:40:25,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:25,467 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:25,467 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 06:40:25,667 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1860 [2021-06-05 06:40:25,667 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:25,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:25,668 INFO L82 PathProgramCache]: Analyzing trace with hash -491765317, now seen corresponding path program 26 times [2021-06-05 06:40:25,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:25,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446931484] [2021-06-05 06:40:25,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:25,932 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 06:40:25,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:25,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446931484] [2021-06-05 06:40:25,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446931484] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:25,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536942224] [2021-06-05 06:40:25,933 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 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 06:40:25,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:40:25,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:25,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:40:25,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:26,349 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 06:40:26,515 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:26,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:26,521 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:26,851 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 122 [2021-06-05 06:40:26,852 INFO L628 ElimStorePlain]: treesize reduction 130, result has 76.3 percent of original size [2021-06-05 06:40:26,871 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:26,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:40:26,874 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:26,884 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:40:26,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 16 [2021-06-05 06:40:26,885 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:27,170 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 119 [2021-06-05 06:40:27,171 INFO L628 ElimStorePlain]: treesize reduction 23, result has 94.1 percent of original size [2021-06-05 06:40:27,193 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:27,193 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:40:27,195 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:27,205 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:40:27,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 1 [2021-06-05 06:40:27,206 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:27,320 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-06-05 06:40:27,320 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:27,340 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:40:27,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:27,344 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:27,449 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-05 06:40:27,449 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:27,465 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:40:27,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:27,467 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:27,570 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 06:40:27,571 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:27,590 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:40:27,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:27,591 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:27,694 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-05 06:40:27,694 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:27,711 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:40:27,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:27,712 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:27,811 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:27,828 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:40:27,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:27,832 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:27,929 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:27,942 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 06:40:27,942 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:563, output treesize:350 [2021-06-05 06:40:28,069 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 34 [2021-06-05 06:40:28,226 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 06:40:28,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536942224] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:28,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:28,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-05 06:40:28,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68326564] [2021-06-05 06:40:28,226 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:40:28,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:28,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:40:28,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:40:28,227 INFO L87 Difference]: Start difference. First operand 1720 states and 5869 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 06:40:29,333 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 45 [2021-06-05 06:40:29,460 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2021-06-05 06:40:29,928 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2021-06-05 06:40:30,105 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-06-05 06:40:30,445 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2021-06-05 06:40:30,802 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2021-06-05 06:40:30,990 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-05 06:40:31,372 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2021-06-05 06:40:31,897 WARN L205 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 89 [2021-06-05 06:40:32,333 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2021-06-05 06:40:32,823 WARN L205 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 80 [2021-06-05 06:40:33,383 WARN L205 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2021-06-05 06:40:34,033 WARN L205 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 101 [2021-06-05 06:40:34,584 WARN L205 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 88 [2021-06-05 06:40:35,329 WARN L205 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 100 [2021-06-05 06:40:36,030 WARN L205 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 87 [2021-06-05 06:40:36,660 WARN L205 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 95 [2021-06-05 06:40:37,028 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2021-06-05 06:40:37,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:37,113 INFO L93 Difference]: Finished difference Result 3224 states and 10085 transitions. [2021-06-05 06:40:37,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:40:37,113 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 06:40:37,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:37,118 INFO L225 Difference]: With dead ends: 3224 [2021-06-05 06:40:37,118 INFO L226 Difference]: Without dead ends: 3167 [2021-06-05 06:40:37,119 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 940 ImplicationChecksByTransitivity, 8749.5ms TimeCoverageRelationStatistics Valid=578, Invalid=2614, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 06:40:37,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2021-06-05 06:40:37,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 1704. [2021-06-05 06:40:37,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1703 states have (on average 3.405754550792719) internal successors, (5800), 1703 states have internal predecessors, (5800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:37,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 5800 transitions. [2021-06-05 06:40:37,148 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 5800 transitions. Word has length 26 [2021-06-05 06:40:37,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:37,148 INFO L482 AbstractCegarLoop]: Abstraction has 1704 states and 5800 transitions. [2021-06-05 06:40:37,148 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 06:40:37,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 5800 transitions. [2021-06-05 06:40:37,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:37,150 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:37,150 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 06:40:37,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1872 [2021-06-05 06:40:37,353 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:37,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:37,354 INFO L82 PathProgramCache]: Analyzing trace with hash 745320095, now seen corresponding path program 46 times [2021-06-05 06:40:37,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:37,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757559413] [2021-06-05 06:40:37,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:37,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:37,639 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 06:40:37,639 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:37,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757559413] [2021-06-05 06:40:37,639 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757559413] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:37,639 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071755304] [2021-06-05 06:40:37,639 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 06:40:37,669 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:40:37,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:37,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:40:37,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:38,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:38,196 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:38,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:38,203 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:38,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:38,210 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:38,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:38,218 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:38,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,225 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 39 treesize of output 13 [2021-06-05 06:40:38,226 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:38,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,233 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 41 treesize of output 13 [2021-06-05 06:40:38,234 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:38,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:38,242 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:38,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,249 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 30 treesize of output 16 [2021-06-05 06:40:38,249 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:38,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:38,257 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:38,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:38,264 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:38,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,268 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,269 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:38,272 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:38,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:38,279 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:38,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:38,286 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:38,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:38,293 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:38,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:38,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:40:38,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:38,309 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:38,326 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:40:38,327 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 06:40:38,327 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:40:38,352 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 06:40:38,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071755304] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:38,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:38,353 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 06:40:38,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831098443] [2021-06-05 06:40:38,353 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:40:38,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:38,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:40:38,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:40:38,353 INFO L87 Difference]: Start difference. First operand 1704 states and 5800 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 06:40:39,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:39,923 INFO L93 Difference]: Finished difference Result 3325 states and 10680 transitions. [2021-06-05 06:40:39,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 06:40:39,923 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 06:40:39,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:39,927 INFO L225 Difference]: With dead ends: 3325 [2021-06-05 06:40:39,927 INFO L226 Difference]: Without dead ends: 3289 [2021-06-05 06:40:39,928 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1601.4ms TimeCoverageRelationStatistics Valid=497, Invalid=2259, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 06:40:39,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-06-05 06:40:39,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 1811. [2021-06-05 06:40:39,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1810 states have (on average 3.422099447513812) internal successors, (6194), 1810 states have internal predecessors, (6194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:39,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 6194 transitions. [2021-06-05 06:40:39,956 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 6194 transitions. Word has length 26 [2021-06-05 06:40:39,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:39,956 INFO L482 AbstractCegarLoop]: Abstraction has 1811 states and 6194 transitions. [2021-06-05 06:40:39,956 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 06:40:39,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 6194 transitions. [2021-06-05 06:40:39,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:39,958 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:39,958 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 06:40:40,158 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1908 [2021-06-05 06:40:40,158 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:40,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:40,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1715998549, now seen corresponding path program 47 times [2021-06-05 06:40:40,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:40,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088773375] [2021-06-05 06:40:40,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:40,369 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 06:40:40,369 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:40,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088773375] [2021-06-05 06:40:40,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088773375] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:40,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147748] [2021-06-05 06:40:40,369 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 06:40:40,393 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:40:40,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:40,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:40:40,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:40,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:40,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:40,820 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:40:40,820 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 35 treesize of output 35 [2021-06-05 06:40:40,824 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:40,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:40,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:40,837 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:40,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:40:40,838 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:40,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:40,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:40,851 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:40,851 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 06:40:40,852 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:40,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:40,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:40,865 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:40,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:40:40,866 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:40,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:40,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:40,887 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-05 06:40:40,887 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 25 [2021-06-05 06:40:40,888 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:40,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:40,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:40,924 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:40:40,924 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 06:40:40,927 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:40,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:40,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:40,941 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:40,941 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 39 treesize of output 1 [2021-06-05 06:40:40,942 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:40,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:40,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:40,962 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:40,962 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 23 treesize of output 41 [2021-06-05 06:40:40,971 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:40,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:40,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:40,997 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:40,998 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 06:40:40,998 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:41,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:41,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:41,025 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:40:41,025 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 06:40:41,027 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:41,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:41,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:41,044 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:41,044 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 06:40:41,044 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:41,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:41,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:41,062 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:41,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:40:41,063 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:41,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:41,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:41,079 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:41,079 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 1 [2021-06-05 06:40:41,080 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:41,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:41,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:41,096 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:41,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:40:41,097 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:41,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:41,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:41,121 INFO L354 Elim1Store]: treesize reduction 21, result has 27.6 percent of original size [2021-06-05 06:40:41,122 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 23 [2021-06-05 06:40:41,123 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:41,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:41,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:41,133 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:40:41,133 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 06:40:41,133 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:41,219 INFO L628 ElimStorePlain]: treesize reduction 24, result has 79.5 percent of original size [2021-06-05 06:40:41,221 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 06:40:41,221 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:713, output treesize:75 [2021-06-05 06:40:41,294 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 06:40:41,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147748] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:41,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:41,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 19 [2021-06-05 06:40:41,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945387081] [2021-06-05 06:40:41,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:40:41,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:41,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:40:41,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:40:41,295 INFO L87 Difference]: Start difference. First operand 1811 states and 6194 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 06:40:43,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:43,541 INFO L93 Difference]: Finished difference Result 3806 states and 12114 transitions. [2021-06-05 06:40:43,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:40:43,542 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 06:40:43,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:43,547 INFO L225 Difference]: With dead ends: 3806 [2021-06-05 06:40:43,547 INFO L226 Difference]: Without dead ends: 3749 [2021-06-05 06:40:43,547 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 994 ImplicationChecksByTransitivity, 2048.3ms TimeCoverageRelationStatistics Valid=649, Invalid=2657, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 06:40:43,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3749 states. [2021-06-05 06:40:43,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3749 to 1846. [2021-06-05 06:40:43,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1845 states have (on average 3.430894308943089) internal successors, (6330), 1845 states have internal predecessors, (6330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:43,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 6330 transitions. [2021-06-05 06:40:43,579 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 6330 transitions. Word has length 26 [2021-06-05 06:40:43,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:43,579 INFO L482 AbstractCegarLoop]: Abstraction has 1846 states and 6330 transitions. [2021-06-05 06:40:43,579 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 06:40:43,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 6330 transitions. [2021-06-05 06:40:43,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:43,581 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:43,581 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 06:40:43,782 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1998,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:43,782 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:43,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:43,782 INFO L82 PathProgramCache]: Analyzing trace with hash 701456227, now seen corresponding path program 27 times [2021-06-05 06:40:43,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:43,782 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35092160] [2021-06-05 06:40:43,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:44,136 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 06:40:44,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:44,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35092160] [2021-06-05 06:40:44,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35092160] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:44,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535220349] [2021-06-05 06:40:44,137 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 06:40:44,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:40:44,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:44,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:40:44,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:44,645 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 06:40:44,840 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-05 06:40:44,999 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:44,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 35 [2021-06-05 06:40:45,002 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:45,015 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:40:45,015 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:40:45,015 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:45,332 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 126 [2021-06-05 06:40:45,332 INFO L628 ElimStorePlain]: treesize reduction 120, result has 76.0 percent of original size [2021-06-05 06:40:45,352 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:40:45,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:45,354 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:45,488 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-05 06:40:45,489 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:45,509 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:40:45,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:45,512 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:45,642 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-05 06:40:45,643 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:45,661 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:40:45,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:45,662 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:45,791 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 06:40:45,791 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:45,809 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:45,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 32 [2021-06-05 06:40:45,813 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:45,822 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:40:45,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 16 [2021-06-05 06:40:45,823 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:46,044 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2021-06-05 06:40:46,044 INFO L628 ElimStorePlain]: treesize reduction 23, result has 92.7 percent of original size [2021-06-05 06:40:46,058 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:46,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:46,063 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:46,164 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 06:40:46,164 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:46,180 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:40:46,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:46,181 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:46,280 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:46,297 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:40:46,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:40:46,300 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:46,398 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:46,410 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 06:40:46,410 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:563, output treesize:347 [2021-06-05 06:40:46,573 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2021-06-05 06:40:46,618 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 06:40:46,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535220349] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:46,618 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:46,618 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-05 06:40:46,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691291998] [2021-06-05 06:40:46,618 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:40:46,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:46,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:40:46,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:40:46,619 INFO L87 Difference]: Start difference. First operand 1846 states and 6330 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 06:40:47,733 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2021-06-05 06:40:47,946 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 06:40:48,135 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 59 [2021-06-05 06:40:48,397 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-05 06:40:48,882 WARN L205 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 121 [2021-06-05 06:40:49,266 WARN L205 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 104 [2021-06-05 06:40:49,837 WARN L205 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 113 [2021-06-05 06:40:50,485 WARN L205 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 139 [2021-06-05 06:40:51,036 WARN L205 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 116 [2021-06-05 06:40:51,277 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 79 [2021-06-05 06:40:52,172 WARN L205 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 133 [2021-06-05 06:40:52,589 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 81 [2021-06-05 06:40:52,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:52,837 INFO L93 Difference]: Finished difference Result 2649 states and 8646 transitions. [2021-06-05 06:40:52,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 06:40:52,837 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 06:40:52,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:52,841 INFO L225 Difference]: With dead ends: 2649 [2021-06-05 06:40:52,841 INFO L226 Difference]: Without dead ends: 2604 [2021-06-05 06:40:52,841 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 6190.9ms TimeCoverageRelationStatistics Valid=351, Invalid=2001, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:40:52,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2021-06-05 06:40:52,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 1868. [2021-06-05 06:40:52,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1867 states have (on average 3.430637386181039) internal successors, (6405), 1867 states have internal predecessors, (6405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:52,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 6405 transitions. [2021-06-05 06:40:52,867 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 6405 transitions. Word has length 26 [2021-06-05 06:40:52,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:52,867 INFO L482 AbstractCegarLoop]: Abstraction has 1868 states and 6405 transitions. [2021-06-05 06:40:52,867 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 06:40:52,868 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 6405 transitions. [2021-06-05 06:40:52,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:52,870 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:52,870 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 06:40:53,070 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2103 [2021-06-05 06:40:53,070 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:53,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:53,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1121995759, now seen corresponding path program 28 times [2021-06-05 06:40:53,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:53,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609556910] [2021-06-05 06:40:53,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:53,365 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 06:40:53,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:53,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609556910] [2021-06-05 06:40:53,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609556910] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:53,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508066113] [2021-06-05 06:40:53,366 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 06:40:53,389 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:40:53,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:53,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:40:53,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:53,706 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2021-06-05 06:40:53,834 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_174, v_prenex_175, v_prenex_176, v_prenex_177], 3=[A]} [2021-06-05 06:40:53,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:53,849 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:40:53,849 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 20 [2021-06-05 06:40:53,850 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:53,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:53,860 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:53,861 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 30 treesize of output 24 [2021-06-05 06:40:53,864 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:54,166 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2021-06-05 06:40:54,167 INFO L628 ElimStorePlain]: treesize reduction 24, result has 93.7 percent of original size [2021-06-05 06:40:54,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:54,181 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:54,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:40:54,183 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:54,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:54,193 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:40:54,193 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 21 treesize of output 17 [2021-06-05 06:40:54,195 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:54,328 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-06-05 06:40:54,328 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:54,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:54,341 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:40:54,342 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 06:40:54,343 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:54,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:54,352 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:54,353 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 06:40:54,356 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:54,471 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 06:40:54,471 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:54,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:54,483 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:54,483 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 24 [2021-06-05 06:40:54,485 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:54,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:54,495 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:40:54,495 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 20 [2021-06-05 06:40:54,496 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:54,600 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-05 06:40:54,600 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:54,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:54,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:54,611 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:54,611 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:40:54,614 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:54,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:54,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:54,623 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:40:54,623 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 06:40:54,624 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:54,717 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:54,723 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 06:40:54,723 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:421, output treesize:185 [2021-06-05 06:40:54,847 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 06:40:54,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508066113] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:54,847 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:54,847 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:40:54,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414275060] [2021-06-05 06:40:54,847 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:40:54,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:54,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:40:54,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:40:54,847 INFO L87 Difference]: Start difference. First operand 1868 states and 6405 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 06:40:55,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:40:55,963 INFO L93 Difference]: Finished difference Result 2435 states and 8167 transitions. [2021-06-05 06:40:55,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:40:55,963 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 06:40:55,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:40:55,966 INFO L225 Difference]: With dead ends: 2435 [2021-06-05 06:40:55,966 INFO L226 Difference]: Without dead ends: 2410 [2021-06-05 06:40:55,966 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1367.0ms TimeCoverageRelationStatistics Valid=240, Invalid=1020, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:40:55,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2410 states. [2021-06-05 06:40:55,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2410 to 1870. [2021-06-05 06:40:55,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 3.42964151952916) internal successors, (6410), 1869 states have internal predecessors, (6410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:40:55,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 6410 transitions. [2021-06-05 06:40:55,989 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 6410 transitions. Word has length 26 [2021-06-05 06:40:55,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:40:55,989 INFO L482 AbstractCegarLoop]: Abstraction has 1870 states and 6410 transitions. [2021-06-05 06:40:55,989 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 06:40:55,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 6410 transitions. [2021-06-05 06:40:55,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:40:55,991 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:40:55,991 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 06:40:56,200 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2140,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:40:56,200 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:40:56,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:40:56,200 INFO L82 PathProgramCache]: Analyzing trace with hash 654380625, now seen corresponding path program 29 times [2021-06-05 06:40:56,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:40:56,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719409105] [2021-06-05 06:40:56,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:40:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:40:56,588 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 06:40:56,588 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:40:56,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719409105] [2021-06-05 06:40:56,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719409105] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:56,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473354834] [2021-06-05 06:40:56,588 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 06:40:56,619 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:40:56,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:40:56,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:40:56,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:40:57,129 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-05 06:40:57,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:57,230 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:40:57,230 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 19 [2021-06-05 06:40:57,231 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:57,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:57,244 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:57,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:40:57,245 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:57,567 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 125 [2021-06-05 06:40:57,568 INFO L628 ElimStorePlain]: treesize reduction 72, result has 84.8 percent of original size [2021-06-05 06:40:57,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:57,583 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:57,583 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 24 [2021-06-05 06:40:57,585 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:57,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:57,595 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:40:57,595 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 16 [2021-06-05 06:40:57,596 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:57,863 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 117 [2021-06-05 06:40:57,864 INFO L628 ElimStorePlain]: treesize reduction 21, result has 94.2 percent of original size [2021-06-05 06:40:57,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:57,875 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:40:57,875 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 06:40:57,876 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:57,997 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 06:40:57,997 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:58,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,008 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:40:58,008 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 06:40:58,010 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,124 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 06:40:58,124 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:58,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,135 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:58,135 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 06:40:58,139 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,248 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 06:40:58,248 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:58,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,259 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:40:58,259 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 21 treesize of output 17 [2021-06-05 06:40:58,260 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,367 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-05 06:40:58,367 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:58,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,377 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:58,377 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 16 treesize of output 18 [2021-06-05 06:40:58,380 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,482 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-05 06:40:58,482 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:58,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,495 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:58,495 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 24 [2021-06-05 06:40:58,496 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:40:58,504 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:40:58,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 1 [2021-06-05 06:40:58,505 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:40:58,583 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:40:58,589 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 06:40:58,590 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 16 variables, input treesize:539, output treesize:156 [2021-06-05 06:40:58,725 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2021-06-05 06:40:58,765 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 06:40:58,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473354834] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:40:58,765 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:40:58,765 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:40:58,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654509118] [2021-06-05 06:40:58,765 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:40:58,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:40:58,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:40:58,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:40:58,766 INFO L87 Difference]: Start difference. First operand 1870 states and 6410 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 06:40:59,985 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 06:41:00,232 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 06:41:00,430 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-06-05 06:41:00,666 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 06:41:00,877 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 06:41:01,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:01,080 INFO L93 Difference]: Finished difference Result 2744 states and 8990 transitions. [2021-06-05 06:41:01,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:41:01,080 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 06:41:01,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:01,084 INFO L225 Difference]: With dead ends: 2744 [2021-06-05 06:41:01,084 INFO L226 Difference]: Without dead ends: 2710 [2021-06-05 06:41:01,084 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 2697.7ms TimeCoverageRelationStatistics Valid=307, Invalid=1333, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:41:01,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2710 states. [2021-06-05 06:41:01,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2710 to 1870. [2021-06-05 06:41:01,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1869 states have (on average 3.4307116104868913) internal successors, (6412), 1869 states have internal predecessors, (6412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:01,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 6412 transitions. [2021-06-05 06:41:01,109 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 6412 transitions. Word has length 26 [2021-06-05 06:41:01,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:01,109 INFO L482 AbstractCegarLoop]: Abstraction has 1870 states and 6412 transitions. [2021-06-05 06:41:01,109 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 06:41:01,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 6412 transitions. [2021-06-05 06:41:01,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:01,111 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:01,111 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 06:41:01,311 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2177 [2021-06-05 06:41:01,311 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:01,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:01,312 INFO L82 PathProgramCache]: Analyzing trace with hash -275202939, now seen corresponding path program 48 times [2021-06-05 06:41:01,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:01,312 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511827929] [2021-06-05 06:41:01,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:01,604 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 06:41:01,604 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:01,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511827929] [2021-06-05 06:41:01,604 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511827929] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:01,604 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211048478] [2021-06-05 06:41:01,604 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) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:01,628 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:41:01,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:01,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:41:01,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:02,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:41:02,086 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:41:02,100 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,105 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:41:02,109 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,115 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 30 treesize of output 16 [2021-06-05 06:41:02,115 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:41:02,122 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,129 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:41:02,129 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,136 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:41:02,141 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:41:02,150 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:41:02,159 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:41:02,168 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,172 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,176 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 28 treesize of output 13 [2021-06-05 06:41:02,177 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,180 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,185 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 39 treesize of output 13 [2021-06-05 06:41:02,187 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,190 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,191 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:41:02,195 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:41:02,204 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:02,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:02,208 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 33 treesize of output 13 [2021-06-05 06:41:02,209 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:02,234 INFO L628 ElimStorePlain]: treesize reduction 26, result has 44.7 percent of original size [2021-06-05 06:41:02,236 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 06:41:02,236 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:41:02,263 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 06:41:02,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211048478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:02,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:02,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:41:02,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114038423] [2021-06-05 06:41:02,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:41:02,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:02,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:41:02,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:41:02,264 INFO L87 Difference]: Start difference. First operand 1870 states and 6412 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 06:41:03,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:03,701 INFO L93 Difference]: Finished difference Result 2342 states and 7805 transitions. [2021-06-05 06:41:03,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:41:03,701 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 06:41:03,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:03,704 INFO L225 Difference]: With dead ends: 2342 [2021-06-05 06:41:03,704 INFO L226 Difference]: Without dead ends: 2320 [2021-06-05 06:41:03,704 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 509 ImplicationChecksByTransitivity, 1501.6ms TimeCoverageRelationStatistics Valid=359, Invalid=1533, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:41:03,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2021-06-05 06:41:03,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 1866. [2021-06-05 06:41:03,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1865 states have (on average 3.429490616621984) internal successors, (6396), 1865 states have internal predecessors, (6396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:03,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 6396 transitions. [2021-06-05 06:41:03,725 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 6396 transitions. Word has length 26 [2021-06-05 06:41:03,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:03,725 INFO L482 AbstractCegarLoop]: Abstraction has 1866 states and 6396 transitions. [2021-06-05 06:41:03,726 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 06:41:03,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 6396 transitions. [2021-06-05 06:41:03,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:03,728 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:03,728 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 06:41:03,928 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2204 [2021-06-05 06:41:03,928 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:03,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:03,929 INFO L82 PathProgramCache]: Analyzing trace with hash 650290927, now seen corresponding path program 49 times [2021-06-05 06:41:03,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:03,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125845531] [2021-06-05 06:41:03,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:04,150 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 06:41:04,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:04,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125845531] [2021-06-05 06:41:04,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125845531] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:04,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199303725] [2021-06-05 06:41:04,151 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 06:41:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:04,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:41:04,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:04,457 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_196], 5=[v_prenex_198, v_prenex_200]} [2021-06-05 06:41:04,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:04,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:04,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:04,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:04,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:41:04,465 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:04,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:04,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:04,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:04,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:41:04,470 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:04,536 INFO L628 ElimStorePlain]: treesize reduction 130, result has 40.1 percent of original size [2021-06-05 06:41:04,536 INFO L518 ElimStorePlain]: Eliminatee v_prenex_196 vanished before elimination [2021-06-05 06:41:04,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:04,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:04,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:04,540 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 29 treesize of output 13 [2021-06-05 06:41:04,541 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:04,562 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:04,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:04,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:04,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:04,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:04,566 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 25 treesize of output 13 [2021-06-05 06:41:04,567 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:04,584 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:04,585 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 06:41:04,585 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:270, output treesize:29 [2021-06-05 06:41:04,620 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 06:41:04,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199303725] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:04,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:04,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 06:41:04,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52572911] [2021-06-05 06:41:04,621 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:41:04,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:04,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:41:04,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:41:04,621 INFO L87 Difference]: Start difference. First operand 1866 states and 6396 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 06:41:05,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:05,898 INFO L93 Difference]: Finished difference Result 2566 states and 8529 transitions. [2021-06-05 06:41:05,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:41:05,899 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 06:41:05,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:05,902 INFO L225 Difference]: With dead ends: 2566 [2021-06-05 06:41:05,902 INFO L226 Difference]: Without dead ends: 2551 [2021-06-05 06:41:05,902 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1252.1ms TimeCoverageRelationStatistics Valid=321, Invalid=1319, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:41:05,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2021-06-05 06:41:05,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 1866. [2021-06-05 06:41:05,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1865 states have (on average 3.429490616621984) internal successors, (6396), 1865 states have internal predecessors, (6396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 6396 transitions. [2021-06-05 06:41:05,925 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 6396 transitions. Word has length 26 [2021-06-05 06:41:05,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:05,925 INFO L482 AbstractCegarLoop]: Abstraction has 1866 states and 6396 transitions. [2021-06-05 06:41:05,925 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 06:41:05,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 6396 transitions. [2021-06-05 06:41:05,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:05,927 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:05,927 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 06:41:06,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2300 [2021-06-05 06:41:06,128 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:06,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:06,128 INFO L82 PathProgramCache]: Analyzing trace with hash -527613613, now seen corresponding path program 50 times [2021-06-05 06:41:06,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:06,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481019100] [2021-06-05 06:41:06,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:06,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:06,405 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 06:41:06,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:06,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481019100] [2021-06-05 06:41:06,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481019100] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:06,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474684954] [2021-06-05 06:41:06,406 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 06:41:06,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:41:06,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:06,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:41:06,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:06,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,640 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2021-06-05 06:41:06,640 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 30 [2021-06-05 06:41:06,644 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:06,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,665 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2021-06-05 06:41:06,665 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 06:41:06,666 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:06,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,699 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size [2021-06-05 06:41:06,699 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 37 [2021-06-05 06:41:06,702 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:06,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,716 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:41:06,716 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 06:41:06,717 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:06,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,739 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size [2021-06-05 06:41:06,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:41:06,743 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:06,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,766 INFO L354 Elim1Store]: treesize reduction 20, result has 35.5 percent of original size [2021-06-05 06:41:06,766 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 41 treesize of output 29 [2021-06-05 06:41:06,767 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:06,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,783 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:41:06,783 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 06:41:06,784 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:06,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,812 INFO L354 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2021-06-05 06:41:06,812 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 43 treesize of output 25 [2021-06-05 06:41:06,813 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:06,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,828 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:41:06,828 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 06:41:06,828 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:06,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,851 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2021-06-05 06:41:06,852 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 39 treesize of output 26 [2021-06-05 06:41:06,853 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:06,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,875 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2021-06-05 06:41:06,876 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 26 [2021-06-05 06:41:06,877 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:06,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,893 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:41:06,893 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 41 treesize of output 1 [2021-06-05 06:41:06,894 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:06,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,908 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:41:06,908 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 06:41:06,909 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:06,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,930 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:06,931 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 25 treesize of output 43 [2021-06-05 06:41:06,938 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:06,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,959 INFO L354 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2021-06-05 06:41:06,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:41:06,960 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:06,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:06,968 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:41:06,968 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 1 [2021-06-05 06:41:06,968 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:07,042 INFO L628 ElimStorePlain]: treesize reduction 109, result has 41.7 percent of original size [2021-06-05 06:41:07,043 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:41:07,043 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:705, output treesize:78 [2021-06-05 06:41:07,118 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 06:41:07,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474684954] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:07,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:07,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2021-06-05 06:41:07,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857398829] [2021-06-05 06:41:07,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:41:07,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:07,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:41:07,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:41:07,119 INFO L87 Difference]: Start difference. First operand 1866 states and 6396 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 06:41:08,627 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2021-06-05 06:41:08,907 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 41 [2021-06-05 06:41:09,538 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2021-06-05 06:41:10,969 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2021-06-05 06:41:11,611 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 06:41:11,856 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2021-06-05 06:41:12,208 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-06-05 06:41:12,621 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-06-05 06:41:13,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:13,093 INFO L93 Difference]: Finished difference Result 3357 states and 10803 transitions. [2021-06-05 06:41:13,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-06-05 06:41:13,093 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 06:41:13,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:13,097 INFO L225 Difference]: With dead ends: 3357 [2021-06-05 06:41:13,097 INFO L226 Difference]: Without dead ends: 3310 [2021-06-05 06:41:13,097 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2979 ImplicationChecksByTransitivity, 5173.6ms TimeCoverageRelationStatistics Valid=1266, Invalid=7106, Unknown=0, NotChecked=0, Total=8372 [2021-06-05 06:41:13,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3310 states. [2021-06-05 06:41:13,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 1970. [2021-06-05 06:41:13,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1969 states have (on average 3.420518029456577) internal successors, (6735), 1969 states have internal predecessors, (6735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:13,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 6735 transitions. [2021-06-05 06:41:13,125 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 6735 transitions. Word has length 26 [2021-06-05 06:41:13,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:13,125 INFO L482 AbstractCegarLoop]: Abstraction has 1970 states and 6735 transitions. [2021-06-05 06:41:13,125 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 06:41:13,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 6735 transitions. [2021-06-05 06:41:13,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:13,128 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:13,128 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 06:41:13,329 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2314,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:13,329 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:13,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:13,330 INFO L82 PathProgramCache]: Analyzing trace with hash -2073850769, now seen corresponding path program 51 times [2021-06-05 06:41:13,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:13,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527783150] [2021-06-05 06:41:13,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:13,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:13,578 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 06:41:13,578 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:13,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527783150] [2021-06-05 06:41:13,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527783150] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:13,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984910027] [2021-06-05 06:41:13,578 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 06:41:13,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:41:13,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:13,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:41:13,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:14,025 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-06-05 06:41:14,223 INFO L446 ElimStorePlain]: Different costs {5=[v_prenex_206, v_prenex_208, v_prenex_210, v_prenex_212, v_prenex_202, v_prenex_214], 6=[A, v_prenex_204]} [2021-06-05 06:41:14,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:14,260 INFO L354 Elim1Store]: treesize reduction 20, result has 45.9 percent of original size [2021-06-05 06:41:14,260 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 32 [2021-06-05 06:41:14,262 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:14,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:14,297 INFO L354 Elim1Store]: treesize reduction 16, result has 56.8 percent of original size [2021-06-05 06:41:14,297 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 37 treesize of output 39 [2021-06-05 06:41:14,300 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:14,666 WARN L205 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2021-06-05 06:41:14,666 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:14,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:14,709 INFO L354 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2021-06-05 06:41:14,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 43 [2021-06-05 06:41:14,713 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:14,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:14,745 INFO L354 Elim1Store]: treesize reduction 16, result has 56.8 percent of original size [2021-06-05 06:41:14,746 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 36 [2021-06-05 06:41:14,749 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:15,101 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2021-06-05 06:41:15,101 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:15,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:15,139 INFO L354 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2021-06-05 06:41:15,140 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 28 treesize of output 34 [2021-06-05 06:41:15,155 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:15,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:15,194 INFO L354 Elim1Store]: treesize reduction 8, result has 78.4 percent of original size [2021-06-05 06:41:15,194 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 33 treesize of output 47 [2021-06-05 06:41:15,198 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:15,549 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2021-06-05 06:41:15,549 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:15,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:15,592 INFO L354 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2021-06-05 06:41:15,592 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 43 [2021-06-05 06:41:15,596 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:15,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:15,627 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:15,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 55 [2021-06-05 06:41:15,635 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:16,600 WARN L205 SmtUtils]: Spent 964.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 150 [2021-06-05 06:41:16,600 INFO L628 ElimStorePlain]: treesize reduction 72, result has 90.2 percent of original size [2021-06-05 06:41:16,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:16,637 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:16,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 55 [2021-06-05 06:41:16,643 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:16,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:16,678 INFO L354 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2021-06-05 06:41:16,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 39 treesize of output 43 [2021-06-05 06:41:16,682 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:17,287 WARN L205 SmtUtils]: Spent 604.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 147 [2021-06-05 06:41:17,288 INFO L628 ElimStorePlain]: treesize reduction 34, result has 94.9 percent of original size [2021-06-05 06:41:17,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:17,327 INFO L354 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2021-06-05 06:41:17,327 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 35 treesize of output 43 [2021-06-05 06:41:17,331 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:17,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:17,353 INFO L354 Elim1Store]: treesize reduction 27, result has 27.0 percent of original size [2021-06-05 06:41:17,353 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 35 treesize of output 28 [2021-06-05 06:41:17,354 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:17,623 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-06-05 06:41:17,624 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:17,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:17,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:17,657 INFO L354 Elim1Store]: treesize reduction 18, result has 56.1 percent of original size [2021-06-05 06:41:17,657 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 38 [2021-06-05 06:41:17,660 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:17,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:17,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:17,674 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:41:17,674 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 06:41:17,675 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:17,909 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-06-05 06:41:17,910 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:17,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:17,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:17,942 INFO L354 Elim1Store]: treesize reduction 18, result has 56.1 percent of original size [2021-06-05 06:41:17,942 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 38 [2021-06-05 06:41:17,945 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:17,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:17,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:17,967 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:17,967 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 25 treesize of output 53 [2021-06-05 06:41:17,974 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:18,217 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-05 06:41:18,217 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:18,240 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: and 14 xjuncts. [2021-06-05 06:41:18,240 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:829, output treesize:777 [2021-06-05 06:41:18,580 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 41 [2021-06-05 06:41:18,720 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 06:41:18,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984910027] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:18,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:18,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2021-06-05 06:41:18,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185918027] [2021-06-05 06:41:18,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:41:18,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:18,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:41:18,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:41:18,721 INFO L87 Difference]: Start difference. First operand 1970 states and 6735 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 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 06:41:19,660 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 40 [2021-06-05 06:41:20,615 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2021-06-05 06:41:23,559 WARN L205 SmtUtils]: Spent 2.87 s on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2021-06-05 06:41:23,844 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2021-06-05 06:41:31,681 WARN L205 SmtUtils]: Spent 7.74 s on a formula simplification. DAG size of input: 119 DAG size of output: 79 [2021-06-05 06:41:31,885 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2021-06-05 06:41:32,076 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2021-06-05 06:41:32,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:32,499 INFO L93 Difference]: Finished difference Result 3232 states and 10559 transitions. [2021-06-05 06:41:32,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:41:32,499 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 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 06:41:32,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:32,503 INFO L225 Difference]: With dead ends: 3232 [2021-06-05 06:41:32,503 INFO L226 Difference]: Without dead ends: 3187 [2021-06-05 06:41:32,504 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 995 ImplicationChecksByTransitivity, 14170.1ms TimeCoverageRelationStatistics Valid=609, Invalid=2931, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:41:32,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3187 states. [2021-06-05 06:41:32,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3187 to 2005. [2021-06-05 06:41:32,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2005 states, 2004 states have (on average 3.4266467065868262) internal successors, (6867), 2004 states have internal predecessors, (6867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:32,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 6867 transitions. [2021-06-05 06:41:32,532 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 6867 transitions. Word has length 26 [2021-06-05 06:41:32,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:32,532 INFO L482 AbstractCegarLoop]: Abstraction has 2005 states and 6867 transitions. [2021-06-05 06:41:32,532 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 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 06:41:32,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 6867 transitions. [2021-06-05 06:41:32,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:32,534 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:32,534 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 06:41:32,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2343 [2021-06-05 06:41:32,735 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:32,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:32,735 INFO L82 PathProgramCache]: Analyzing trace with hash 436262311, now seen corresponding path program 52 times [2021-06-05 06:41:32,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:32,735 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729898087] [2021-06-05 06:41:32,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:33,029 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 06:41:33,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:33,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729898087] [2021-06-05 06:41:33,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729898087] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:33,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895925599] [2021-06-05 06:41:33,029 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 06:41:33,052 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:41:33,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:33,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:41:33,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:33,463 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_226], 5=[v_prenex_222, v_prenex_224]} [2021-06-05 06:41:33,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:33,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:33,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:33,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:41:33,472 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:33,554 INFO L628 ElimStorePlain]: treesize reduction 137, result has 41.9 percent of original size [2021-06-05 06:41:33,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:33,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:33,558 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 23 treesize of output 13 [2021-06-05 06:41:33,559 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:33,583 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:33,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:33,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:33,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:33,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:33,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:41:33,592 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:33,613 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:33,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:41:33,616 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 23 treesize of output 13 [2021-06-05 06:41:33,617 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:33,635 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:33,637 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 06:41:33,637 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:270, output treesize:22 [2021-06-05 06:41:33,670 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 06:41:33,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895925599] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:33,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:33,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 06:41:33,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687780936] [2021-06-05 06:41:33,670 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:41:33,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:33,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:41:33,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:41:33,671 INFO L87 Difference]: Start difference. First operand 2005 states and 6867 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 06:41:35,706 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2021-06-05 06:41:36,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:36,270 INFO L93 Difference]: Finished difference Result 2655 states and 8819 transitions. [2021-06-05 06:41:36,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:41:36,270 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 06:41:36,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:36,274 INFO L225 Difference]: With dead ends: 2655 [2021-06-05 06:41:36,274 INFO L226 Difference]: Without dead ends: 2640 [2021-06-05 06:41:36,274 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 2298.0ms TimeCoverageRelationStatistics Valid=482, Invalid=2170, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 06:41:36,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2021-06-05 06:41:36,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2003. [2021-06-05 06:41:36,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 2002 states have (on average 3.4265734265734267) internal successors, (6860), 2002 states have internal predecessors, (6860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:36,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 6860 transitions. [2021-06-05 06:41:36,299 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 6860 transitions. Word has length 26 [2021-06-05 06:41:36,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:36,299 INFO L482 AbstractCegarLoop]: Abstraction has 2003 states and 6860 transitions. [2021-06-05 06:41:36,299 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 06:41:36,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 6860 transitions. [2021-06-05 06:41:36,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:36,301 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:36,301 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 06:41:36,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2428,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:36,502 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:36,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:36,502 INFO L82 PathProgramCache]: Analyzing trace with hash 2135160291, now seen corresponding path program 53 times [2021-06-05 06:41:36,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:36,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298087131] [2021-06-05 06:41:36,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:36,747 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 06:41:36,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:36,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298087131] [2021-06-05 06:41:36,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298087131] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:36,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972040364] [2021-06-05 06:41:36,748 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 06:41:36,771 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:41:36,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:36,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:41:36,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:37,239 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2021-06-05 06:41:37,420 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-05 06:41:37,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:37,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:37,659 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:41:37,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:41:37,661 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:37,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:37,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:37,686 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:37,686 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 06:41:37,692 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:38,045 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-06-05 06:41:38,045 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:38,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:38,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:38,078 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:41:38,078 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31 [2021-06-05 06:41:38,080 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:38,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:38,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:38,107 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:41:38,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:41:38,111 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:38,730 WARN L205 SmtUtils]: Spent 618.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 148 [2021-06-05 06:41:38,731 INFO L628 ElimStorePlain]: treesize reduction 29, result has 95.9 percent of original size [2021-06-05 06:41:38,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:38,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:38,765 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 06:41:38,765 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 06:41:38,768 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:38,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:38,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:38,790 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-05 06:41:38,791 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 06:41:38,791 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:39,063 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-06-05 06:41:39,063 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:39,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:39,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:39,093 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 06:41:39,093 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 06:41:39,097 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:39,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:39,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:39,130 INFO L354 Elim1Store]: treesize reduction 4, result has 86.2 percent of original size [2021-06-05 06:41:39,131 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 43 [2021-06-05 06:41:39,134 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:39,392 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-05 06:41:39,392 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:39,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:39,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:39,425 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:41:39,425 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 06:41:39,426 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:39,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:39,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:39,449 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:41:39,449 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 06:41:39,451 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:39,698 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-06-05 06:41:39,698 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:39,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:39,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:39,732 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:41:39,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:41:39,751 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:39,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:39,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:39,777 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:41:39,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:41:39,779 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,031 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2021-06-05 06:41:40,031 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:40,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,057 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:41:40,058 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 06:41:40,059 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,081 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:41:40,082 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 06:41:40,085 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,493 WARN L205 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104 [2021-06-05 06:41:40,493 INFO L628 ElimStorePlain]: treesize reduction 29, result has 93.8 percent of original size [2021-06-05 06:41:40,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,530 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:40,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:41:40,536 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:40,549 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:41:40,549 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 06:41:40,549 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:40,718 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-05 06:41:40,718 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:40,731 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 06:41:40,731 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:793, output treesize:352 [2021-06-05 06:41:40,883 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 06:41:40,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972040364] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:40,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:40,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2021-06-05 06:41:40,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130892440] [2021-06-05 06:41:40,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:41:40,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:40,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:41:40,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:41:40,884 INFO L87 Difference]: Start difference. First operand 2003 states and 6860 transitions. Second operand has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 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 06:41:45,118 WARN L205 SmtUtils]: Spent 2.88 s on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2021-06-05 06:41:50,191 WARN L205 SmtUtils]: Spent 4.87 s on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2021-06-05 06:41:51,254 WARN L205 SmtUtils]: Spent 992.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 115 [2021-06-05 06:41:51,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:51,799 INFO L93 Difference]: Finished difference Result 2890 states and 9570 transitions. [2021-06-05 06:41:51,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-06-05 06:41:51,799 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 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 06:41:51,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:51,803 INFO L225 Difference]: With dead ends: 2890 [2021-06-05 06:41:51,803 INFO L226 Difference]: Without dead ends: 2860 [2021-06-05 06:41:51,803 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 11182.7ms TimeCoverageRelationStatistics Valid=522, Invalid=2448, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 06:41:51,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2021-06-05 06:41:51,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2003. [2021-06-05 06:41:51,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 2002 states have (on average 3.4265734265734267) internal successors, (6860), 2002 states have internal predecessors, (6860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:51,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 6860 transitions. [2021-06-05 06:41:51,831 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 6860 transitions. Word has length 26 [2021-06-05 06:41:51,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:51,831 INFO L482 AbstractCegarLoop]: Abstraction has 2003 states and 6860 transitions. [2021-06-05 06:41:51,831 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3181818181818183) internal successors, (51), 22 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 06:41:51,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 6860 transitions. [2021-06-05 06:41:51,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:51,833 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:51,833 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] [2021-06-05 06:41:52,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2442 [2021-06-05 06:41:52,034 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:52,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:52,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1001444339, now seen corresponding path program 54 times [2021-06-05 06:41:52,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:52,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274993264] [2021-06-05 06:41:52,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:52,272 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 06:41:52,272 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:52,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274993264] [2021-06-05 06:41:52,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274993264] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:52,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640376604] [2021-06-05 06:41:52,272 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 06:41:52,296 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:41:52,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:52,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:41:52,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:52,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,510 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-05 06:41:52,510 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 31 [2021-06-05 06:41:52,513 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,537 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:52,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:41:52,544 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,567 INFO L354 Elim1Store]: treesize reduction 20, result has 25.9 percent of original size [2021-06-05 06:41:52,568 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 06:41:52,569 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,585 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:41:52,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:41:52,585 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,608 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-05 06:41:52,609 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 06:41:52,610 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,625 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:41:52,626 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 06:41:52,626 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,642 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:41:52,642 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 06:41:52,643 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,658 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:41:52,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:41:52,659 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,680 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:41:52,680 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 06:41:52,681 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,702 INFO L354 Elim1Store]: treesize reduction 16, result has 40.7 percent of original size [2021-06-05 06:41:52,702 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 06:41:52,703 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,718 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:41:52,718 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 06:41:52,718 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,741 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-05 06:41:52,741 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 06:41:52,745 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,766 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-05 06:41:52,766 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 30 treesize of output 25 [2021-06-05 06:41:52,767 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,781 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:41:52,781 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 06:41:52,782 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,795 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:41:52,795 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 37 treesize of output 1 [2021-06-05 06:41:52,796 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:41:52,803 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:41:52,803 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 28 treesize of output 1 [2021-06-05 06:41:52,803 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:52,868 INFO L628 ElimStorePlain]: treesize reduction 42, result has 65.0 percent of original size [2021-06-05 06:41:52,869 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:41:52,869 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:657, output treesize:78 [2021-06-05 06:41:52,946 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 06:41:52,947 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640376604] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:52,947 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:52,947 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:41:52,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462370582] [2021-06-05 06:41:52,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:41:52,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:52,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:41:52,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:41:52,948 INFO L87 Difference]: Start difference. First operand 2003 states and 6860 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 06:41:55,198 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2021-06-05 06:41:55,426 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 62 [2021-06-05 06:41:55,664 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 46 [2021-06-05 06:41:55,967 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2021-06-05 06:41:56,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:56,602 INFO L93 Difference]: Finished difference Result 3566 states and 11484 transitions. [2021-06-05 06:41:56,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 06:41:56,602 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 06:41:56,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:56,607 INFO L225 Difference]: With dead ends: 3566 [2021-06-05 06:41:56,608 INFO L226 Difference]: Without dead ends: 3532 [2021-06-05 06:41:56,608 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 3346.2ms TimeCoverageRelationStatistics Valid=879, Invalid=3153, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 06:41:56,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3532 states. [2021-06-05 06:41:56,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3532 to 2009. [2021-06-05 06:41:56,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2008 states have (on average 3.431772908366534) internal successors, (6891), 2008 states have internal predecessors, (6891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:56,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 6891 transitions. [2021-06-05 06:41:56,641 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 6891 transitions. Word has length 26 [2021-06-05 06:41:56,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:56,642 INFO L482 AbstractCegarLoop]: Abstraction has 2009 states and 6891 transitions. [2021-06-05 06:41:56,642 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 06:41:56,642 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 6891 transitions. [2021-06-05 06:41:56,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:56,644 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:56,644 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, 1, 1] [2021-06-05 06:41:56,845 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2508,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:41:56,845 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:56,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:56,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1556883255, now seen corresponding path program 30 times [2021-06-05 06:41:56,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:56,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959681829] [2021-06-05 06:41:56,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:41:56,981 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 06:41:56,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:41:56,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959681829] [2021-06-05 06:41:56,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959681829] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:56,982 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889136714] [2021-06-05 06:41:56,982 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 06:41:57,005 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:41:57,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:41:57,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:41:57,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:41:57,333 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:41:57,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 28 [2021-06-05 06:41:57,335 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:57,344 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:41:57,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:41:57,345 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:57,353 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:41:57,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:41:57,354 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:57,372 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:41:57,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 28 [2021-06-05 06:41:57,374 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:57,389 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:57,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:41:57,393 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:57,410 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:41:57,410 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 21 treesize of output 21 [2021-06-05 06:41:57,411 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:57,420 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:41:57,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:41:57,421 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:57,429 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:41:57,429 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:41:57,429 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:57,444 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:41:57,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:41:57,448 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:57,457 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:41:57,457 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:41:57,457 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:57,473 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:41:57,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 24 [2021-06-05 06:41:57,475 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:57,492 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:41:57,492 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:41:57,495 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:57,504 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:41:57,504 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 1 [2021-06-05 06:41:57,505 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:57,512 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:41:57,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:41:57,513 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:57,520 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:41:57,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:41:57,521 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:57,526 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:41:57,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:41:57,526 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:41:57,642 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2021-06-05 06:41:57,643 INFO L628 ElimStorePlain]: treesize reduction 33, result has 82.1 percent of original size [2021-06-05 06:41:57,645 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 06:41:57,645 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:697, output treesize:177 [2021-06-05 06:41:57,813 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 06:41:57,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889136714] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:41:57,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:41:57,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2021-06-05 06:41:57,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528132831] [2021-06-05 06:41:57,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:41:57,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:41:57,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:41:57,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:41:57,814 INFO L87 Difference]: Start difference. First operand 2009 states and 6891 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 06:41:59,392 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2021-06-05 06:41:59,544 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2021-06-05 06:41:59,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:41:59,579 INFO L93 Difference]: Finished difference Result 2493 states and 8335 transitions. [2021-06-05 06:41:59,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:41:59,579 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 06:41:59,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:41:59,582 INFO L225 Difference]: With dead ends: 2493 [2021-06-05 06:41:59,582 INFO L226 Difference]: Without dead ends: 2478 [2021-06-05 06:41:59,583 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1656.1ms TimeCoverageRelationStatistics Valid=234, Invalid=1248, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:41:59,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2478 states. [2021-06-05 06:41:59,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2478 to 2002. [2021-06-05 06:41:59,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 2001 states have (on average 3.4302848575712144) internal successors, (6864), 2001 states have internal predecessors, (6864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:41:59,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 6864 transitions. [2021-06-05 06:41:59,625 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 6864 transitions. Word has length 26 [2021-06-05 06:41:59,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:41:59,626 INFO L482 AbstractCegarLoop]: Abstraction has 2002 states and 6864 transitions. [2021-06-05 06:41:59,626 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 06:41:59,626 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 6864 transitions. [2021-06-05 06:41:59,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:41:59,629 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:41:59,629 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 06:41:59,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2536 [2021-06-05 06:41:59,845 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:41:59,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:41:59,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1386281111, now seen corresponding path program 31 times [2021-06-05 06:41:59,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:41:59,845 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370496098] [2021-06-05 06:41:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:41:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:00,083 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 06:42:00,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:00,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370496098] [2021-06-05 06:42:00,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370496098] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:00,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759600450] [2021-06-05 06:42:00,083 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 06:42:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:00,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:42:00,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:00,346 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-06-05 06:42:00,544 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 47 [2021-06-05 06:42:00,600 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_249], 2=[A, v_prenex_250]} [2021-06-05 06:42:00,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:00,605 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 06:42:00,606 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:00,700 INFO L628 ElimStorePlain]: treesize reduction 50, result has 69.7 percent of original size [2021-06-05 06:42:00,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:00,704 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 23 treesize of output 13 [2021-06-05 06:42:00,705 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:00,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:00,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:00,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:42:00,709 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:00,757 INFO L628 ElimStorePlain]: treesize reduction 13, result has 83.5 percent of original size [2021-06-05 06:42:00,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:00,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:00,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:00,762 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:00,781 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:00,783 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:42:00,783 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:179, output treesize:32 [2021-06-05 06:42:00,831 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 06:42:00,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759600450] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:00,831 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:00,831 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:42:00,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776152790] [2021-06-05 06:42:00,831 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:42:00,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:00,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:42:00,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:42:00,832 INFO L87 Difference]: Start difference. First operand 2002 states and 6864 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 06:42:01,805 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-05 06:42:02,122 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2021-06-05 06:42:02,291 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2021-06-05 06:42:02,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:02,522 INFO L93 Difference]: Finished difference Result 2918 states and 9622 transitions. [2021-06-05 06:42:02,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 06:42:02,523 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 06:42:02,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:02,527 INFO L225 Difference]: With dead ends: 2918 [2021-06-05 06:42:02,527 INFO L226 Difference]: Without dead ends: 2873 [2021-06-05 06:42:02,527 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1750.8ms TimeCoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:42:02,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2021-06-05 06:42:02,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 2019. [2021-06-05 06:42:02,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 2018 states have (on average 3.4345887016848367) internal successors, (6931), 2018 states have internal predecessors, (6931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 6931 transitions. [2021-06-05 06:42:02,553 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 6931 transitions. Word has length 26 [2021-06-05 06:42:02,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:02,553 INFO L482 AbstractCegarLoop]: Abstraction has 2019 states and 6931 transitions. [2021-06-05 06:42:02,553 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 06:42:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 6931 transitions. [2021-06-05 06:42:02,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:02,556 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:02,556 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 06:42:02,764 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2593,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:02,765 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:02,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:02,765 INFO L82 PathProgramCache]: Analyzing trace with hash -231251669, now seen corresponding path program 32 times [2021-06-05 06:42:02,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:02,765 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616748411] [2021-06-05 06:42:02,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:02,984 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 06:42:02,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:02,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616748411] [2021-06-05 06:42:02,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616748411] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:02,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313488045] [2021-06-05 06:42:02,985 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 06:42:03,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:42:03,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:03,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:42:03,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:03,261 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2021-06-05 06:42:03,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:03,356 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:03,357 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 35 treesize of output 27 [2021-06-05 06:42:03,361 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:03,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:03,380 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:03,380 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 35 treesize of output 27 [2021-06-05 06:42:03,383 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:03,677 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 120 [2021-06-05 06:42:03,678 INFO L628 ElimStorePlain]: treesize reduction 131, result has 71.4 percent of original size [2021-06-05 06:42:03,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:03,690 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:03,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:03,691 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:03,807 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-05 06:42:03,808 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:03,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:03,819 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:03,819 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 16 treesize of output 18 [2021-06-05 06:42:03,823 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:03,938 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-06-05 06:42:03,939 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:03,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:03,951 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:03,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:03,954 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:04,057 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-06-05 06:42:04,057 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:04,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:04,069 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:04,069 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 06:42:04,070 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:04,168 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:04,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:04,179 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:04,180 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 06:42:04,181 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:04,275 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:04,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:04,285 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:04,286 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 26 treesize of output 24 [2021-06-05 06:42:04,287 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:04,377 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:04,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:04,390 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:04,390 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 30 treesize of output 24 [2021-06-05 06:42:04,391 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:04,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:04,399 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:42:04,399 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 1 [2021-06-05 06:42:04,399 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:04,468 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:04,473 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 06:42:04,473 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:503, output treesize:150 [2021-06-05 06:42:04,593 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2021-06-05 06:42:04,630 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 06:42:04,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313488045] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:04,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:04,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:42:04,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795946090] [2021-06-05 06:42:04,631 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:42:04,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:04,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:42:04,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:42:04,631 INFO L87 Difference]: Start difference. First operand 2019 states and 6931 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 06:42:05,498 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-05 06:42:05,653 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2021-06-05 06:42:05,979 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2021-06-05 06:42:06,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:06,404 INFO L93 Difference]: Finished difference Result 3134 states and 10334 transitions. [2021-06-05 06:42:06,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:42:06,404 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 06:42:06,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:06,409 INFO L225 Difference]: With dead ends: 3134 [2021-06-05 06:42:06,409 INFO L226 Difference]: Without dead ends: 3104 [2021-06-05 06:42:06,409 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 1926.9ms TimeCoverageRelationStatistics Valid=292, Invalid=1040, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:42:06,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3104 states. [2021-06-05 06:42:06,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3104 to 2002. [2021-06-05 06:42:06,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 2001 states have (on average 3.4292853573213393) internal successors, (6862), 2001 states have internal predecessors, (6862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:06,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 6862 transitions. [2021-06-05 06:42:06,436 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 6862 transitions. Word has length 26 [2021-06-05 06:42:06,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:06,437 INFO L482 AbstractCegarLoop]: Abstraction has 2002 states and 6862 transitions. [2021-06-05 06:42:06,437 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 06:42:06,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 6862 transitions. [2021-06-05 06:42:06,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:06,439 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:06,439 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 06:42:06,640 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2605 [2021-06-05 06:42:06,641 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:06,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:06,641 INFO L82 PathProgramCache]: Analyzing trace with hash -714132561, now seen corresponding path program 33 times [2021-06-05 06:42:06,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:06,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838069400] [2021-06-05 06:42:06,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:06,835 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 06:42:06,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:06,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838069400] [2021-06-05 06:42:06,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838069400] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:06,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119338557] [2021-06-05 06:42:06,835 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 06:42:06,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:42:06,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:06,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:42:06,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:07,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:07,166 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 13 [2021-06-05 06:42:07,170 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:07,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:07,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:42:07,176 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:07,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:07,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:07,182 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:07,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:07,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,188 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 28 treesize of output 16 [2021-06-05 06:42:07,189 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:07,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:07,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,194 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:07,195 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:07,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:07,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 16 [2021-06-05 06:42:07,201 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:07,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:07,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,206 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:07,207 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:07,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:07,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:07,212 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:07,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:07,215 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:07,218 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:07,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:07,221 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:07,224 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:07,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:07,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:07,230 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:07,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:07,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:07,236 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:07,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:07,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:07,242 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:07,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:07,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,247 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 30 treesize of output 13 [2021-06-05 06:42:07,248 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:07,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:07,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:07,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:07,251 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:07,270 INFO L628 ElimStorePlain]: treesize reduction 26, result has 44.7 percent of original size [2021-06-05 06:42:07,271 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 06:42:07,271 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 06:42:07,292 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 06:42:07,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119338557] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:07,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:07,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:42:07,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146636904] [2021-06-05 06:42:07,293 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:42:07,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:07,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:42:07,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:42:07,293 INFO L87 Difference]: Start difference. First operand 2002 states and 6862 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 06:42:07,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:07,810 INFO L93 Difference]: Finished difference Result 2504 states and 8391 transitions. [2021-06-05 06:42:07,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:42:07,810 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 06:42:07,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:07,814 INFO L225 Difference]: With dead ends: 2504 [2021-06-05 06:42:07,814 INFO L226 Difference]: Without dead ends: 2483 [2021-06-05 06:42:07,814 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 608.9ms TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:42:07,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2021-06-05 06:42:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2009. [2021-06-05 06:42:07,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 2008 states have (on average 3.431772908366534) internal successors, (6891), 2008 states have internal predecessors, (6891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:07,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 6891 transitions. [2021-06-05 06:42:07,840 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 6891 transitions. Word has length 26 [2021-06-05 06:42:07,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:07,840 INFO L482 AbstractCegarLoop]: Abstraction has 2009 states and 6891 transitions. [2021-06-05 06:42:07,840 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 06:42:07,840 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 6891 transitions. [2021-06-05 06:42:07,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:07,842 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:07,842 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, 1, 1] [2021-06-05 06:42:08,042 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2633 [2021-06-05 06:42:08,043 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:08,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:08,043 INFO L82 PathProgramCache]: Analyzing trace with hash -881941653, now seen corresponding path program 34 times [2021-06-05 06:42:08,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:08,043 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617539952] [2021-06-05 06:42:08,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:08,221 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 06:42:08,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:08,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617539952] [2021-06-05 06:42:08,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617539952] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:08,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107440787] [2021-06-05 06:42:08,222 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 06:42:08,244 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:42:08,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:08,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:42:08,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:08,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,550 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:42:08,551 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:08,557 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,563 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 28 treesize of output 16 [2021-06-05 06:42:08,563 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,567 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,569 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 26 treesize of output 13 [2021-06-05 06:42:08,570 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,575 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 28 treesize of output 16 [2021-06-05 06:42:08,576 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 13 [2021-06-05 06:42:08,582 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,588 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 33 treesize of output 19 [2021-06-05 06:42:08,588 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:08,594 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,599 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:08,599 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:08,605 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,610 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 28 treesize of output 16 [2021-06-05 06:42:08,611 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,616 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 30 treesize of output 16 [2021-06-05 06:42:08,617 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:08,623 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,626 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,628 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 30 treesize of output 16 [2021-06-05 06:42:08,629 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:08,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:08,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:08,632 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:08,651 INFO L628 ElimStorePlain]: treesize reduction 26, result has 44.7 percent of original size [2021-06-05 06:42:08,652 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 06:42:08,652 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 06:42:08,676 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 06:42:08,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107440787] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:08,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:08,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:42:08,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431592451] [2021-06-05 06:42:08,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:42:08,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:08,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:42:08,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:42:08,677 INFO L87 Difference]: Start difference. First operand 2009 states and 6891 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 06:42:09,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:09,025 INFO L93 Difference]: Finished difference Result 2352 states and 7913 transitions. [2021-06-05 06:42:09,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 06:42:09,026 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 06:42:09,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:09,029 INFO L225 Difference]: With dead ends: 2352 [2021-06-05 06:42:09,029 INFO L226 Difference]: Without dead ends: 2333 [2021-06-05 06:42:09,029 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 467.3ms TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:42:09,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2021-06-05 06:42:09,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 2003. [2021-06-05 06:42:09,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2003 states, 2002 states have (on average 3.4315684315684316) internal successors, (6870), 2002 states have internal predecessors, (6870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:09,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 6870 transitions. [2021-06-05 06:42:09,055 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 6870 transitions. Word has length 26 [2021-06-05 06:42:09,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:09,056 INFO L482 AbstractCegarLoop]: Abstraction has 2003 states and 6870 transitions. [2021-06-05 06:42:09,056 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 06:42:09,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 6870 transitions. [2021-06-05 06:42:09,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:09,059 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:09,059 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 06:42:09,281 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2675,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:09,281 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:09,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:09,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1345509615, now seen corresponding path program 35 times [2021-06-05 06:42:09,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:09,281 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335473458] [2021-06-05 06:42:09,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:09,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:09,451 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 06:42:09,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:09,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335473458] [2021-06-05 06:42:09,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335473458] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:09,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521946926] [2021-06-05 06:42:09,451 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 06:42:09,474 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:42:09,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:09,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:42:09,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:09,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,789 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:42:09,790 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 28 treesize of output 16 [2021-06-05 06:42:09,790 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,798 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:42:09,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:09,798 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,806 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:42:09,806 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 19 [2021-06-05 06:42:09,806 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,817 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:09,817 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 20 [2021-06-05 06:42:09,818 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,829 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:09,829 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 24 [2021-06-05 06:42:09,830 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,839 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:42:09,839 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 06:42:09,839 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,848 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:42:09,848 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 06:42:09,849 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,860 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:09,860 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 06:42:09,862 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,870 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:42:09,870 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 06:42:09,871 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,879 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:42:09,879 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 06:42:09,880 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,891 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:09,891 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 30 treesize of output 24 [2021-06-05 06:42:09,894 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,904 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:09,904 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 16 treesize of output 18 [2021-06-05 06:42:09,907 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,918 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:09,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:09,920 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,928 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:42:09,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:09,929 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,940 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:09,940 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 20 [2021-06-05 06:42:09,941 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:09,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:09,947 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:42:09,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 1 [2021-06-05 06:42:09,947 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:10,041 INFO L628 ElimStorePlain]: treesize reduction 24, result has 82.5 percent of original size [2021-06-05 06:42:10,042 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 06:42:10,043 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:617, output treesize:91 [2021-06-05 06:42:10,126 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 06:42:10,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521946926] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:10,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:10,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:42:10,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498984416] [2021-06-05 06:42:10,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:42:10,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:10,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:42:10,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:42:10,127 INFO L87 Difference]: Start difference. First operand 2003 states and 6870 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 06:42:11,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:11,367 INFO L93 Difference]: Finished difference Result 2949 states and 9724 transitions. [2021-06-05 06:42:11,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:42:11,367 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 06:42:11,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:11,371 INFO L225 Difference]: With dead ends: 2949 [2021-06-05 06:42:11,371 INFO L226 Difference]: Without dead ends: 2899 [2021-06-05 06:42:11,371 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1200.4ms TimeCoverageRelationStatistics Valid=271, Invalid=1135, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 06:42:11,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2021-06-05 06:42:11,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 1994. [2021-06-05 06:42:11,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1993 states have (on average 3.4290015052684395) internal successors, (6834), 1993 states have internal predecessors, (6834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:11,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 6834 transitions. [2021-06-05 06:42:11,397 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 6834 transitions. Word has length 26 [2021-06-05 06:42:11,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:11,397 INFO L482 AbstractCegarLoop]: Abstraction has 1994 states and 6834 transitions. [2021-06-05 06:42:11,397 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 06:42:11,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 6834 transitions. [2021-06-05 06:42:11,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:11,399 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:11,399 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 06:42:11,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2719,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:11,600 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:11,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:11,600 INFO L82 PathProgramCache]: Analyzing trace with hash -583168205, now seen corresponding path program 36 times [2021-06-05 06:42:11,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:11,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130509430] [2021-06-05 06:42:11,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:11,756 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 06:42:11,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:11,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130509430] [2021-06-05 06:42:11,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130509430] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:11,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608639127] [2021-06-05 06:42:11,756 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 06:42:11,779 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:42:11,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:11,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:42:11,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:12,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:12,094 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:12,095 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 24 [2021-06-05 06:42:12,096 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:12,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:12,106 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:12,106 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 30 treesize of output 20 [2021-06-05 06:42:12,107 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:12,212 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 06:42:12,213 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:12,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:12,224 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:12,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:12,227 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:12,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:12,237 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:12,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:12,238 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:12,336 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:12,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:12,348 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:12,348 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 26 treesize of output 24 [2021-06-05 06:42:12,349 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:12,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:12,358 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:12,358 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 06:42:12,359 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:12,451 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:12,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:12,463 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:12,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 20 [2021-06-05 06:42:12,464 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:12,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:12,472 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:12,472 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 24 [2021-06-05 06:42:12,475 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:12,550 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:12,555 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 06:42:12,555 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:293, output treesize:141 [2021-06-05 06:42:12,669 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 06:42:12,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608639127] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:12,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:12,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-06-05 06:42:12,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744886749] [2021-06-05 06:42:12,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:42:12,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:12,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:42:12,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:42:12,670 INFO L87 Difference]: Start difference. First operand 1994 states and 6834 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 06:42:13,258 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-06-05 06:42:13,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:13,482 INFO L93 Difference]: Finished difference Result 2201 states and 7427 transitions. [2021-06-05 06:42:13,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:42:13,482 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 06:42:13,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:13,485 INFO L225 Difference]: With dead ends: 2201 [2021-06-05 06:42:13,485 INFO L226 Difference]: Without dead ends: 2176 [2021-06-05 06:42:13,485 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 875.9ms TimeCoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:42:13,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2021-06-05 06:42:13,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 1990. [2021-06-05 06:42:13,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1990 states, 1989 states have (on average 3.431875314228255) internal successors, (6826), 1989 states have internal predecessors, (6826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:13,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1990 states to 1990 states and 6826 transitions. [2021-06-05 06:42:13,506 INFO L78 Accepts]: Start accepts. Automaton has 1990 states and 6826 transitions. Word has length 26 [2021-06-05 06:42:13,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:13,506 INFO L482 AbstractCegarLoop]: Abstraction has 1990 states and 6826 transitions. [2021-06-05 06:42:13,506 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 06:42:13,506 INFO L276 IsEmpty]: Start isEmpty. Operand 1990 states and 6826 transitions. [2021-06-05 06:42:13,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:13,508 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:13,508 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 06:42:13,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2768,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:13,709 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:13,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:13,709 INFO L82 PathProgramCache]: Analyzing trace with hash -129711505, now seen corresponding path program 37 times [2021-06-05 06:42:13,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:13,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107738941] [2021-06-05 06:42:13,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:13,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:13,922 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 06:42:13,922 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:13,922 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107738941] [2021-06-05 06:42:13,923 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107738941] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:13,923 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904667152] [2021-06-05 06:42:13,923 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 06:42:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:13,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:42:13,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:14,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:14,336 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:14,336 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 06:42:14,337 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:14,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:14,348 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:14,349 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 06:42:14,352 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:14,666 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2021-06-05 06:42:14,666 INFO L628 ElimStorePlain]: treesize reduction 24, result has 93.7 percent of original size [2021-06-05 06:42:14,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:14,679 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:14,679 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 06:42:14,681 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:14,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:14,691 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:14,691 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 06:42:14,692 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:14,832 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 06:42:14,832 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:14,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:14,845 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:14,845 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 30 treesize of output 24 [2021-06-05 06:42:14,849 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:14,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:14,859 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:14,859 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 20 [2021-06-05 06:42:14,860 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:14,983 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 06:42:14,983 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:14,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:14,995 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:14,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 24 [2021-06-05 06:42:14,996 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:15,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:15,006 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:15,006 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 30 treesize of output 24 [2021-06-05 06:42:15,008 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:15,230 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2021-06-05 06:42:15,230 INFO L628 ElimStorePlain]: treesize reduction 4, result has 98.5 percent of original size [2021-06-05 06:42:15,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:15,242 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:15,242 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 06:42:15,245 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:15,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:15,254 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:15,254 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 06:42:15,256 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:15,350 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:15,356 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 06:42:15,356 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:407, output treesize:170 [2021-06-05 06:42:15,472 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 06:42:15,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904667152] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:15,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:15,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:42:15,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579869401] [2021-06-05 06:42:15,472 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:42:15,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:15,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:42:15,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:42:15,473 INFO L87 Difference]: Start difference. First operand 1990 states and 6826 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 06:42:16,143 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2021-06-05 06:42:16,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:16,329 INFO L93 Difference]: Finished difference Result 2694 states and 8981 transitions. [2021-06-05 06:42:16,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:42:16,329 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 06:42:16,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:16,333 INFO L225 Difference]: With dead ends: 2694 [2021-06-05 06:42:16,333 INFO L226 Difference]: Without dead ends: 2648 [2021-06-05 06:42:16,333 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 982.0ms TimeCoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:42:16,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2021-06-05 06:42:16,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 1999. [2021-06-05 06:42:16,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1999 states, 1998 states have (on average 3.4334334334334335) internal successors, (6860), 1998 states have internal predecessors, (6860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:16,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1999 states to 1999 states and 6860 transitions. [2021-06-05 06:42:16,357 INFO L78 Accepts]: Start accepts. Automaton has 1999 states and 6860 transitions. Word has length 26 [2021-06-05 06:42:16,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:16,357 INFO L482 AbstractCegarLoop]: Abstraction has 1999 states and 6860 transitions. [2021-06-05 06:42:16,358 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 06:42:16,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1999 states and 6860 transitions. [2021-06-05 06:42:16,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:16,360 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:16,360 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 06:42:16,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2799 [2021-06-05 06:42:16,560 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:16,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:16,560 INFO L82 PathProgramCache]: Analyzing trace with hash -858801881, now seen corresponding path program 38 times [2021-06-05 06:42:16,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:16,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25738260] [2021-06-05 06:42:16,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:16,751 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 06:42:16,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:16,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25738260] [2021-06-05 06:42:16,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25738260] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:16,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813606259] [2021-06-05 06:42:16,752 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 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 06:42:16,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:42:16,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:16,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:42:16,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:17,153 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 06:42:17,440 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 57 [2021-06-05 06:42:17,501 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_290, v_prenex_289]} [2021-06-05 06:42:17,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:17,506 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 06:42:17,507 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:17,593 INFO L628 ElimStorePlain]: treesize reduction 50, result has 69.7 percent of original size [2021-06-05 06:42:17,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:17,598 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 23 treesize of output 13 [2021-06-05 06:42:17,598 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:17,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:17,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:17,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 16 [2021-06-05 06:42:17,602 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:17,651 INFO L628 ElimStorePlain]: treesize reduction 13, result has 83.5 percent of original size [2021-06-05 06:42:17,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:17,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:17,654 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 23 treesize of output 13 [2021-06-05 06:42:17,655 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:17,674 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:17,676 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:42:17,676 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:179, output treesize:32 [2021-06-05 06:42:17,712 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 06:42:17,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813606259] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:17,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:17,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:42:17,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670198616] [2021-06-05 06:42:17,712 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:42:17,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:17,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:42:17,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:42:17,713 INFO L87 Difference]: Start difference. First operand 1999 states and 6860 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 06:42:18,547 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 06:42:18,920 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 86 [2021-06-05 06:42:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:19,115 INFO L93 Difference]: Finished difference Result 2703 states and 8943 transitions. [2021-06-05 06:42:19,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:42:19,115 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 06:42:19,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:19,119 INFO L225 Difference]: With dead ends: 2703 [2021-06-05 06:42:19,119 INFO L226 Difference]: Without dead ends: 2658 [2021-06-05 06:42:19,119 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1672.5ms TimeCoverageRelationStatistics Valid=211, Invalid=911, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:42:19,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2021-06-05 06:42:19,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 1983. [2021-06-05 06:42:19,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1983 states, 1982 states have (on average 3.43087790110999) internal successors, (6800), 1982 states have internal predecessors, (6800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:19,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 6800 transitions. [2021-06-05 06:42:19,145 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 6800 transitions. Word has length 26 [2021-06-05 06:42:19,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:19,145 INFO L482 AbstractCegarLoop]: Abstraction has 1983 states and 6800 transitions. [2021-06-05 06:42:19,145 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 06:42:19,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 6800 transitions. [2021-06-05 06:42:19,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:19,147 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:19,147 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 06:42:19,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2836,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:19,348 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:19,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:19,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1072305685, now seen corresponding path program 39 times [2021-06-05 06:42:19,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:19,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121914091] [2021-06-05 06:42:19,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:19,472 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 06:42:19,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:19,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121914091] [2021-06-05 06:42:19,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121914091] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:19,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954819311] [2021-06-05 06:42:19,472 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 06:42:19,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:42:19,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:19,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:42:19,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:19,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:19,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,839 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 13 [2021-06-05 06:42:19,840 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:19,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:19,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:19,846 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:19,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:19,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,851 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 30 treesize of output 16 [2021-06-05 06:42:19,851 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:19,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:19,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:19,857 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:19,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:19,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:19,863 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:19,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:19,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,868 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,868 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:42:19,869 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:19,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:19,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,874 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:42:19,874 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:19,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:19,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,879 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:19,880 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:19,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:19,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:19,885 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:19,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:19,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 16 [2021-06-05 06:42:19,891 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:19,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:19,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:19,896 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:19,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:19,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:19,902 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:19,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:19,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,907 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2021-06-05 06:42:19,907 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:19,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:19,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:19,912 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:19,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:19,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:19,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:19,915 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:19,932 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:42:19,933 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 06:42:19,933 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 06:42:19,954 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 06:42:19,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954819311] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:19,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:19,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:42:19,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106810870] [2021-06-05 06:42:19,954 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:42:19,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:19,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:42:19,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:42:19,955 INFO L87 Difference]: Start difference. First operand 1983 states and 6800 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 06:42:20,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:20,433 INFO L93 Difference]: Finished difference Result 2475 states and 8338 transitions. [2021-06-05 06:42:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 06:42:20,433 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 06:42:20,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:20,437 INFO L225 Difference]: With dead ends: 2475 [2021-06-05 06:42:20,437 INFO L226 Difference]: Without dead ends: 2460 [2021-06-05 06:42:20,437 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 513.7ms TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:42:20,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-06-05 06:42:20,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 1983. [2021-06-05 06:42:20,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1983 states, 1982 states have (on average 3.43087790110999) internal successors, (6800), 1982 states have internal predecessors, (6800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:20,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 6800 transitions. [2021-06-05 06:42:20,459 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 6800 transitions. Word has length 26 [2021-06-05 06:42:20,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:20,459 INFO L482 AbstractCegarLoop]: Abstraction has 1983 states and 6800 transitions. [2021-06-05 06:42:20,460 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 06:42:20,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 6800 transitions. [2021-06-05 06:42:20,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:20,462 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:20,462 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 06:42:20,662 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2847 [2021-06-05 06:42:20,663 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:20,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:20,663 INFO L82 PathProgramCache]: Analyzing trace with hash -1240114777, now seen corresponding path program 40 times [2021-06-05 06:42:20,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:20,663 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177797471] [2021-06-05 06:42:20,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:20,780 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 06:42:20,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:20,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177797471] [2021-06-05 06:42:20,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177797471] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:20,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105039923] [2021-06-05 06:42:20,780 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 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 06:42:20,803 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:42:20,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:20,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:42:20,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:21,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:21,121 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:21,126 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,130 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:21,131 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 13 [2021-06-05 06:42:21,136 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:21,141 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:21,146 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:42:21,151 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,154 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:21,156 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,160 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:42:21,161 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,164 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:21,165 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:21,171 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2021-06-05 06:42:21,175 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,179 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:21,180 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:21,184 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:21,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:21,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:21,187 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:21,204 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:42:21,205 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 06:42:21,205 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:548, output treesize:15 [2021-06-05 06:42:21,233 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 06:42:21,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105039923] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:21,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:21,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:42:21,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078496658] [2021-06-05 06:42:21,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:42:21,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:21,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:42:21,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:42:21,234 INFO L87 Difference]: Start difference. First operand 1983 states and 6800 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 06:42:22,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:22,193 INFO L93 Difference]: Finished difference Result 2790 states and 9280 transitions. [2021-06-05 06:42:22,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:42:22,193 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 06:42:22,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:22,197 INFO L225 Difference]: With dead ends: 2790 [2021-06-05 06:42:22,197 INFO L226 Difference]: Without dead ends: 2760 [2021-06-05 06:42:22,197 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 946.8ms TimeCoverageRelationStatistics Valid=256, Invalid=1004, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:42:22,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2760 states. [2021-06-05 06:42:22,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 1983. [2021-06-05 06:42:22,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1983 states, 1982 states have (on average 3.43087790110999) internal successors, (6800), 1982 states have internal predecessors, (6800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:22,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 6800 transitions. [2021-06-05 06:42:22,222 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 6800 transitions. Word has length 26 [2021-06-05 06:42:22,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:22,222 INFO L482 AbstractCegarLoop]: Abstraction has 1983 states and 6800 transitions. [2021-06-05 06:42:22,223 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 06:42:22,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 6800 transitions. [2021-06-05 06:42:22,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:22,225 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:22,225 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 06:42:22,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2889,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:22,425 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:22,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:22,426 INFO L82 PathProgramCache]: Analyzing trace with hash -941341329, now seen corresponding path program 41 times [2021-06-05 06:42:22,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:22,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158419266] [2021-06-05 06:42:22,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:22,542 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 06:42:22,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:22,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158419266] [2021-06-05 06:42:22,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158419266] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:22,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926860721] [2021-06-05 06:42:22,543 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 06:42:22,567 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:42:22,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:22,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:42:22,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:22,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:22,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:22,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:22,837 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:22,915 INFO L628 ElimStorePlain]: treesize reduction 121, result has 44.0 percent of original size [2021-06-05 06:42:22,918 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 23 treesize of output 13 [2021-06-05 06:42:22,919 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:22,942 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:22,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:22,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:22,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:22,946 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:22,969 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:22,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:22,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:22,972 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:42:22,973 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:22,991 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:22,993 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 06:42:22,993 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:248, output treesize:22 [2021-06-05 06:42:23,027 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 06:42:23,027 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926860721] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:23,027 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:23,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:42:23,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062731829] [2021-06-05 06:42:23,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:42:23,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:23,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:42:23,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:42:23,028 INFO L87 Difference]: Start difference. First operand 1983 states and 6800 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 06:42:23,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:23,664 INFO L93 Difference]: Finished difference Result 2608 states and 8716 transitions. [2021-06-05 06:42:23,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:42:23,664 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 06:42:23,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:23,668 INFO L225 Difference]: With dead ends: 2608 [2021-06-05 06:42:23,669 INFO L226 Difference]: Without dead ends: 2578 [2021-06-05 06:42:23,669 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 641.0ms TimeCoverageRelationStatistics Valid=199, Invalid=731, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:42:23,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2578 states. [2021-06-05 06:42:23,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2578 to 1986. [2021-06-05 06:42:23,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1986 states, 1985 states have (on average 3.433249370277078) internal successors, (6815), 1985 states have internal predecessors, (6815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:23,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 6815 transitions. [2021-06-05 06:42:23,694 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 6815 transitions. Word has length 26 [2021-06-05 06:42:23,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:23,694 INFO L482 AbstractCegarLoop]: Abstraction has 1986 states and 6815 transitions. [2021-06-05 06:42:23,695 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 06:42:23,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 6815 transitions. [2021-06-05 06:42:23,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:23,697 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:23,697 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 06:42:23,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2933,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:23,912 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:23,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:23,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1403214703, now seen corresponding path program 42 times [2021-06-05 06:42:23,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:23,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151626138] [2021-06-05 06:42:23,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:24,047 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 06:42:24,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:24,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151626138] [2021-06-05 06:42:24,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151626138] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:24,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225948433] [2021-06-05 06:42:24,047 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 06:42:24,070 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:42:24,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:24,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:42:24,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:24,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:24,436 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:24,437 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 20 [2021-06-05 06:42:24,438 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:24,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:24,447 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:24,447 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 24 [2021-06-05 06:42:24,451 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:24,555 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-05 06:42:24,555 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:24,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:24,568 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:24,568 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 06:42:24,569 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:24,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:24,578 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:24,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:24,582 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:24,676 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:24,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:24,688 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:24,689 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 24 [2021-06-05 06:42:24,690 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:24,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:24,699 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:24,699 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 20 [2021-06-05 06:42:24,700 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:24,786 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:24,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:24,797 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:24,797 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 06:42:24,798 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:24,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:24,807 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:24,807 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 06:42:24,808 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:24,886 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:24,890 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 06:42:24,890 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 8 variables, input treesize:309, output treesize:141 [2021-06-05 06:42:25,004 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 06:42:25,004 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225948433] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:25,004 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:25,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:42:25,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794061199] [2021-06-05 06:42:25,005 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:42:25,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:25,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:42:25,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:42:25,005 INFO L87 Difference]: Start difference. First operand 1986 states and 6815 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 06:42:25,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:25,489 INFO L93 Difference]: Finished difference Result 2559 states and 8622 transitions. [2021-06-05 06:42:25,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 06:42:25,490 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 06:42:25,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:25,493 INFO L225 Difference]: With dead ends: 2559 [2021-06-05 06:42:25,494 INFO L226 Difference]: Without dead ends: 2544 [2021-06-05 06:42:25,494 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 670.5ms TimeCoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:42:25,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2021-06-05 06:42:25,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2010. [2021-06-05 06:42:25,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 2009 states have (on average 3.4310602289696366) internal successors, (6893), 2009 states have internal predecessors, (6893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:25,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 6893 transitions. [2021-06-05 06:42:25,519 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 6893 transitions. Word has length 26 [2021-06-05 06:42:25,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:25,519 INFO L482 AbstractCegarLoop]: Abstraction has 2010 states and 6893 transitions. [2021-06-05 06:42:25,519 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 06:42:25,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 6893 transitions. [2021-06-05 06:42:25,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:25,521 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:25,521 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 06:42:25,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2947 [2021-06-05 06:42:25,722 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:25,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:25,722 INFO L82 PathProgramCache]: Analyzing trace with hash -2092411309, now seen corresponding path program 43 times [2021-06-05 06:42:25,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:25,722 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155037528] [2021-06-05 06:42:25,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:25,948 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 06:42:25,948 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:25,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155037528] [2021-06-05 06:42:25,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155037528] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:25,948 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367953238] [2021-06-05 06:42:25,948 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 06:42:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:25,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:42:25,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:26,323 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 06:42:26,531 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 47 [2021-06-05 06:42:26,585 INFO L446 ElimStorePlain]: Different costs {1=[v_prenex_313, v_prenex_314], 2=[A, v_prenex_312]} [2021-06-05 06:42:26,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:26,589 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 06:42:26,590 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:26,728 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2021-06-05 06:42:26,728 INFO L628 ElimStorePlain]: treesize reduction 117, result has 43.8 percent of original size [2021-06-05 06:42:26,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:26,731 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 06:42:26,733 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:26,758 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:26,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:26,761 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:26,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:26,762 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:26,784 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:26,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:26,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:26,787 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2021-06-05 06:42:26,788 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:26,806 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:26,808 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-05 06:42:26,808 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 7 variables, input treesize:222, output treesize:15 [2021-06-05 06:42:26,834 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 06:42:26,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367953238] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:26,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:26,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:42:26,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684443002] [2021-06-05 06:42:26,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:42:26,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:26,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:42:26,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:42:26,835 INFO L87 Difference]: Start difference. First operand 2010 states and 6893 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 06:42:27,447 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-05 06:42:27,636 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 71 [2021-06-05 06:42:27,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:27,768 INFO L93 Difference]: Finished difference Result 2656 states and 8840 transitions. [2021-06-05 06:42:27,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 06:42:27,768 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 06:42:27,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:27,771 INFO L225 Difference]: With dead ends: 2656 [2021-06-05 06:42:27,771 INFO L226 Difference]: Without dead ends: 2611 [2021-06-05 06:42:27,772 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1330.3ms TimeCoverageRelationStatistics Valid=173, Invalid=697, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:42:27,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2611 states. [2021-06-05 06:42:27,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2611 to 2044. [2021-06-05 06:42:27,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 2043 states have (on average 3.4322075379344104) internal successors, (7012), 2043 states have internal predecessors, (7012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:27,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 7012 transitions. [2021-06-05 06:42:27,795 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 7012 transitions. Word has length 26 [2021-06-05 06:42:27,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:27,795 INFO L482 AbstractCegarLoop]: Abstraction has 2044 states and 7012 transitions. [2021-06-05 06:42:27,795 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 06:42:27,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 7012 transitions. [2021-06-05 06:42:27,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:27,798 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:27,798 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 06:42:27,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2979,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:27,998 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:27,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:27,998 INFO L82 PathProgramCache]: Analyzing trace with hash 585023207, now seen corresponding path program 44 times [2021-06-05 06:42:27,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:27,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854572255] [2021-06-05 06:42:27,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:28,206 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 06:42:28,206 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:28,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854572255] [2021-06-05 06:42:28,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854572255] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:28,206 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989673310] [2021-06-05 06:42:28,206 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 06:42:28,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:42:28,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:28,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:42:28,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:28,572 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 06:42:28,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:28,686 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:28,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:28,691 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:29,063 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 150 [2021-06-05 06:42:29,064 INFO L628 ElimStorePlain]: treesize reduction 139, result has 74.8 percent of original size [2021-06-05 06:42:29,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:29,087 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:29,087 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:42:29,090 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:29,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:29,116 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:42:29,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:42:29,117 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:29,406 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 142 [2021-06-05 06:42:29,406 INFO L628 ElimStorePlain]: treesize reduction 32, result has 91.6 percent of original size [2021-06-05 06:42:29,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:29,427 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:42:29,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:29,429 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:29,566 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2021-06-05 06:42:29,566 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:29,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:29,590 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:42:29,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:29,591 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:29,726 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2021-06-05 06:42:29,726 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:29,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:29,752 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:42:29,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 28 [2021-06-05 06:42:29,754 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:29,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:29,766 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-06-05 06:42:29,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 1 [2021-06-05 06:42:29,767 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:29,871 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-06-05 06:42:29,872 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:29,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:29,893 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:42:29,893 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 25 [2021-06-05 06:42:29,896 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:29,996 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:30,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:30,015 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:42:30,015 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 24 [2021-06-05 06:42:30,017 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:30,113 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:30,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:30,129 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:30,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:30,135 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:30,227 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:30,242 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 06:42:30,243 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 24 variables, input treesize:563, output treesize:232 [2021-06-05 06:42:30,433 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 31 [2021-06-05 06:42:30,463 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 06:42:30,463 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989673310] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:30,463 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:30,463 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:42:30,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122258194] [2021-06-05 06:42:30,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:42:30,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:30,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:42:30,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:42:30,464 INFO L87 Difference]: Start difference. First operand 2044 states and 7012 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 06:42:30,723 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-06-05 06:42:31,374 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 06:42:31,540 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-06-05 06:42:31,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:31,775 INFO L93 Difference]: Finished difference Result 2980 states and 9896 transitions. [2021-06-05 06:42:31,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:42:31,775 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 06:42:31,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:31,779 INFO L225 Difference]: With dead ends: 2980 [2021-06-05 06:42:31,779 INFO L226 Difference]: Without dead ends: 2950 [2021-06-05 06:42:31,780 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1608.2ms TimeCoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:42:31,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2950 states. [2021-06-05 06:42:31,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2950 to 2027. [2021-06-05 06:42:31,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 2026 states have (on average 3.428923988153998) internal successors, (6947), 2026 states have internal predecessors, (6947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:31,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 6947 transitions. [2021-06-05 06:42:31,818 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 6947 transitions. Word has length 26 [2021-06-05 06:42:31,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:31,818 INFO L482 AbstractCegarLoop]: Abstraction has 2027 states and 6947 transitions. [2021-06-05 06:42:31,818 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 06:42:31,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 6947 transitions. [2021-06-05 06:42:31,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:31,820 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:31,820 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 06:42:32,022 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2993,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:32,022 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:32,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:32,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1104919697, now seen corresponding path program 45 times [2021-06-05 06:42:32,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:32,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567784503] [2021-06-05 06:42:32,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:32,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:32,222 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 06:42:32,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:32,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567784503] [2021-06-05 06:42:32,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567784503] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:32,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150567147] [2021-06-05 06:42:32,222 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 06:42:32,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:42:32,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:32,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:42:32,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:32,598 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-06-05 06:42:32,704 INFO L446 ElimStorePlain]: Different costs {2=[A, v_prenex_343, v_prenex_344, v_prenex_345], 3=[v_prenex_347]} [2021-06-05 06:42:32,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:32,718 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:32,718 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 35 treesize of output 27 [2021-06-05 06:42:32,719 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:32,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:32,730 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:32,731 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 35 treesize of output 27 [2021-06-05 06:42:32,733 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:33,051 WARN L205 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 94 [2021-06-05 06:42:33,051 INFO L628 ElimStorePlain]: treesize reduction 21, result has 94.6 percent of original size [2021-06-05 06:42:33,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:33,065 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:33,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:33,068 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:33,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:33,080 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:33,080 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 06:42:33,081 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:33,215 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 06:42:33,216 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:33,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:33,228 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:33,229 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 06:42:33,230 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:33,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:33,240 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:33,240 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 26 treesize of output 24 [2021-06-05 06:42:33,241 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:33,369 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 06:42:33,369 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:33,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:33,381 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:33,382 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 24 [2021-06-05 06:42:33,385 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:33,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:33,395 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:42:33,395 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 20 [2021-06-05 06:42:33,395 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:33,505 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-05 06:42:33,505 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:33,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:33,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:33,516 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:33,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:33,520 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:33,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:33,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:33,528 INFO L354 Elim1Store]: treesize reduction 4, result has 60.0 percent of original size [2021-06-05 06:42:33,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:33,530 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:33,626 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:33,631 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 06:42:33,631 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:425, output treesize:180 [2021-06-05 06:42:33,761 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 06:42:33,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150567147] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:33,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:33,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:42:33,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061441549] [2021-06-05 06:42:33,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:42:33,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:33,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:42:33,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:42:33,762 INFO L87 Difference]: Start difference. First operand 2027 states and 6947 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 06:42:34,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:34,353 INFO L93 Difference]: Finished difference Result 2615 states and 8782 transitions. [2021-06-05 06:42:34,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 06:42:34,353 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 06:42:34,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:34,357 INFO L225 Difference]: With dead ends: 2615 [2021-06-05 06:42:34,357 INFO L226 Difference]: Without dead ends: 2590 [2021-06-05 06:42:34,357 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 933.4ms TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2021-06-05 06:42:34,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2021-06-05 06:42:34,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2027. [2021-06-05 06:42:34,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 2026 states have (on average 3.430898321816387) internal successors, (6951), 2026 states have internal predecessors, (6951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:34,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 6951 transitions. [2021-06-05 06:42:34,382 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 6951 transitions. Word has length 26 [2021-06-05 06:42:34,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:34,382 INFO L482 AbstractCegarLoop]: Abstraction has 2027 states and 6951 transitions. [2021-06-05 06:42:34,382 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 06:42:34,382 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 6951 transitions. [2021-06-05 06:42:34,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:34,384 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:34,384 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 06:42:34,585 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3036,100 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:34,585 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:34,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:34,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1379621035, now seen corresponding path program 46 times [2021-06-05 06:42:34,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:34,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307495859] [2021-06-05 06:42:34,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:34,821 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 06:42:34,821 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:34,821 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307495859] [2021-06-05 06:42:34,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307495859] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:34,822 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256919955] [2021-06-05 06:42:34,822 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 06:42:34,844 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:42:34,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:34,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:42:34,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:35,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:35,421 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:42:35,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:35,423 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:35,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:35,441 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:35,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:35,447 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:35,785 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 92 [2021-06-05 06:42:35,786 INFO L628 ElimStorePlain]: treesize reduction 33, result has 92.4 percent of original size [2021-06-05 06:42:35,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:35,805 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:35,805 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:42:35,810 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:35,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:35,828 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:42:35,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 24 [2021-06-05 06:42:35,829 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:36,131 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2021-06-05 06:42:36,132 INFO L628 ElimStorePlain]: treesize reduction 14, result has 96.3 percent of original size [2021-06-05 06:42:36,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:36,150 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:36,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-06-05 06:42:36,154 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:36,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:36,171 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:42:36,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 24 [2021-06-05 06:42:36,172 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:36,476 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2021-06-05 06:42:36,477 INFO L628 ElimStorePlain]: treesize reduction 9, result has 97.4 percent of original size [2021-06-05 06:42:36,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:36,500 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:42:36,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:36,503 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:36,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:36,523 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:42:36,523 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2021-06-05 06:42:36,525 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:36,666 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-05 06:42:36,666 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:36,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:36,686 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:42:36,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:42:36,688 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:36,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:36,701 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:36,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:36,707 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:36,837 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-06-05 06:42:36,837 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:36,854 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 06:42:36,854 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 11 variables, input treesize:457, output treesize:247 [2021-06-05 06:42:37,010 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 06:42:37,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256919955] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:37,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:37,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-06-05 06:42:37,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112270782] [2021-06-05 06:42:37,010 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:42:37,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:37,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:42:37,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:42:37,011 INFO L87 Difference]: Start difference. First operand 2027 states and 6951 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 06:42:37,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:37,623 INFO L93 Difference]: Finished difference Result 2605 states and 8786 transitions. [2021-06-05 06:42:37,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 06:42:37,624 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 06:42:37,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:37,627 INFO L225 Difference]: With dead ends: 2605 [2021-06-05 06:42:37,627 INFO L226 Difference]: Without dead ends: 2590 [2021-06-05 06:42:37,628 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 923.2ms TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-06-05 06:42:37,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2021-06-05 06:42:37,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2027. [2021-06-05 06:42:37,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 2026 states have (on average 3.430898321816387) internal successors, (6951), 2026 states have internal predecessors, (6951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:37,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 6951 transitions. [2021-06-05 06:42:37,653 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 6951 transitions. Word has length 26 [2021-06-05 06:42:37,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:37,653 INFO L482 AbstractCegarLoop]: Abstraction has 2027 states and 6951 transitions. [2021-06-05 06:42:37,653 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 06:42:37,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 6951 transitions. [2021-06-05 06:42:37,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:37,655 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:37,655 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 06:42:37,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3073 [2021-06-05 06:42:37,857 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:37,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:37,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1044929515, now seen corresponding path program 55 times [2021-06-05 06:42:37,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:37,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259835379] [2021-06-05 06:42:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:38,007 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 06:42:38,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:38,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259835379] [2021-06-05 06:42:38,007 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259835379] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:38,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412599892] [2021-06-05 06:42:38,008 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 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 06:42:38,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:38,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:42:38,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:38,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:38,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:38,439 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:38,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:38,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,444 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:42:38,448 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:38,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:38,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:38,457 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:38,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:38,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,463 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:38,466 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:38,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:38,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:38,475 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:38,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:38,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,481 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,483 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,483 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 37 treesize of output 19 [2021-06-05 06:42:38,484 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:38,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:38,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,492 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 35 treesize of output 19 [2021-06-05 06:42:38,493 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:38,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:38,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,498 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:38,502 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:38,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:38,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,507 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:38,511 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:38,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:38,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,518 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 06:42:38,519 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:38,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:38,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:38,528 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:38,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:38,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:38,536 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:38,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:38,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:38,545 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:38,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:38,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,551 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 39 treesize of output 19 [2021-06-05 06:42:38,551 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:38,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:38,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:38,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:38,555 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:38,572 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:42:38,573 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 06:42:38,573 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:42:38,593 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 06:42:38,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412599892] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:38,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:38,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-06-05 06:42:38,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548399312] [2021-06-05 06:42:38,594 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:42:38,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:38,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:42:38,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:42:38,594 INFO L87 Difference]: Start difference. First operand 2027 states and 6951 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 06:42:39,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:39,147 INFO L93 Difference]: Finished difference Result 2632 states and 8515 transitions. [2021-06-05 06:42:39,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:42:39,147 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 06:42:39,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:39,151 INFO L225 Difference]: With dead ends: 2632 [2021-06-05 06:42:39,151 INFO L226 Difference]: Without dead ends: 2595 [2021-06-05 06:42:39,151 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 563.3ms TimeCoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2021-06-05 06:42:39,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2021-06-05 06:42:39,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2051. [2021-06-05 06:42:39,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2051 states, 2050 states have (on average 3.430731707317073) internal successors, (7033), 2050 states have internal predecessors, (7033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:39,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2051 states to 2051 states and 7033 transitions. [2021-06-05 06:42:39,176 INFO L78 Accepts]: Start accepts. Automaton has 2051 states and 7033 transitions. Word has length 26 [2021-06-05 06:42:39,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:39,176 INFO L482 AbstractCegarLoop]: Abstraction has 2051 states and 7033 transitions. [2021-06-05 06:42:39,176 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 06:42:39,177 INFO L276 IsEmpty]: Start isEmpty. Operand 2051 states and 7033 transitions. [2021-06-05 06:42:39,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:39,179 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:39,179 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 06:42:39,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3148 [2021-06-05 06:42:39,380 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:39,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:39,380 INFO L82 PathProgramCache]: Analyzing trace with hash 2112804079, now seen corresponding path program 56 times [2021-06-05 06:42:39,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:39,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046140734] [2021-06-05 06:42:39,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:39,529 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 06:42:39,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:39,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046140734] [2021-06-05 06:42:39,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046140734] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:39,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464182549] [2021-06-05 06:42:39,530 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 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 06:42:39,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:42:39,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:39,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:42:39,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:39,789 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_357], 5=[v_prenex_361, v_prenex_359]} [2021-06-05 06:42:39,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:39,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:39,794 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:39,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:39,795 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:39,874 INFO L628 ElimStorePlain]: treesize reduction 133, result has 44.1 percent of original size [2021-06-05 06:42:39,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:39,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:39,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:39,879 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:39,903 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:39,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:39,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:39,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:39,907 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2021-06-05 06:42:39,908 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:39,930 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:39,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:39,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:39,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:39,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:39,934 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:39,953 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:39,955 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 06:42:39,955 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:270, output treesize:22 [2021-06-05 06:42:39,990 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 06:42:39,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464182549] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:39,991 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:39,991 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 16 [2021-06-05 06:42:39,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657045589] [2021-06-05 06:42:39,991 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:42:39,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:39,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:42:39,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:42:39,991 INFO L87 Difference]: Start difference. First operand 2051 states and 7033 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 06:42:40,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:40,818 INFO L93 Difference]: Finished difference Result 2527 states and 8437 transitions. [2021-06-05 06:42:40,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:42:40,818 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 06:42:40,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:40,821 INFO L225 Difference]: With dead ends: 2527 [2021-06-05 06:42:40,821 INFO L226 Difference]: Without dead ends: 2481 [2021-06-05 06:42:40,821 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 798.1ms TimeCoverageRelationStatistics Valid=268, Invalid=922, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:42:40,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2021-06-05 06:42:40,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 2047. [2021-06-05 06:42:40,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2047 states, 2046 states have (on average 3.424731182795699) internal successors, (7007), 2046 states have internal predecessors, (7007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:40,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2047 states to 2047 states and 7007 transitions. [2021-06-05 06:42:40,843 INFO L78 Accepts]: Start accepts. Automaton has 2047 states and 7007 transitions. Word has length 26 [2021-06-05 06:42:40,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:40,844 INFO L482 AbstractCegarLoop]: Abstraction has 2047 states and 7007 transitions. [2021-06-05 06:42:40,844 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 06:42:40,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2047 states and 7007 transitions. [2021-06-05 06:42:40,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:40,846 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:40,846 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 06:42:41,046 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3238,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:41,046 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:41,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:41,047 INFO L82 PathProgramCache]: Analyzing trace with hash 455537647, now seen corresponding path program 57 times [2021-06-05 06:42:41,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:41,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481340877] [2021-06-05 06:42:41,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:41,281 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 06:42:41,282 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:41,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481340877] [2021-06-05 06:42:41,282 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481340877] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:41,282 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556778351] [2021-06-05 06:42:41,282 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 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 06:42:41,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:42:41,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:41,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:42:41,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:41,629 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 06:42:41,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:41,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:41,914 INFO L354 Elim1Store]: treesize reduction 4, result has 86.2 percent of original size [2021-06-05 06:42:41,914 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 06:42:41,917 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:41,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:41,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:41,943 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 06:42:41,943 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 06:42:41,946 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:42,270 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2021-06-05 06:42:42,270 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:42,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:42,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:42,301 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:42,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:42:42,308 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:42,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:42,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:42,331 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:42:42,331 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 28 treesize of output 26 [2021-06-05 06:42:42,333 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:42,669 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2021-06-05 06:42:42,669 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:42,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:42,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:42,706 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:42:42,706 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 06:42:42,709 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:42,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:42,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:42,733 INFO L354 Elim1Store]: treesize reduction 22, result has 24.1 percent of original size [2021-06-05 06:42:42,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:42:42,734 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:43,303 WARN L205 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 135 [2021-06-05 06:42:43,304 INFO L628 ElimStorePlain]: treesize reduction 3, result has 99.5 percent of original size [2021-06-05 06:42:43,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:43,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:43,340 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:42:43,340 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 06:42:43,354 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:43,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:43,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:43,377 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:42:43,378 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 28 [2021-06-05 06:42:43,379 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:43,649 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-06-05 06:42:43,650 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:43,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:43,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:43,687 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:42:43,688 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 35 [2021-06-05 06:42:43,689 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:43,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:43,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:43,714 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:43,714 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 06:42:43,719 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:44,197 WARN L205 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2021-06-05 06:42:44,197 INFO L628 ElimStorePlain]: treesize reduction 28, result has 94.5 percent of original size [2021-06-05 06:42:44,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:44,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:44,224 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:42:44,224 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 06:42:44,226 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:44,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:44,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:44,248 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:42:44,248 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 06:42:44,252 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:44,664 WARN L205 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 107 [2021-06-05 06:42:44,664 INFO L628 ElimStorePlain]: treesize reduction 26, result has 94.1 percent of original size [2021-06-05 06:42:44,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:44,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:44,696 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:42:44,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:42:44,699 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:44,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:44,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:44,720 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:42:44,720 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 32 treesize of output 26 [2021-06-05 06:42:44,722 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:44,911 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 06:42:44,911 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:44,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:44,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:44,938 INFO L354 Elim1Store]: treesize reduction 16, result has 44.8 percent of original size [2021-06-05 06:42:44,938 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 06:42:44,939 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:44,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:44,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:44,963 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:42:44,963 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 06:42:44,967 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:45,281 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 87 [2021-06-05 06:42:45,282 INFO L628 ElimStorePlain]: treesize reduction 24, result has 92.8 percent of original size [2021-06-05 06:42:45,292 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 06:42:45,292 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 16 variables, input treesize:721, output treesize:301 [2021-06-05 06:42:45,423 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 06:42:45,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556778351] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:45,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:45,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:42:45,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972165768] [2021-06-05 06:42:45,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:42:45,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:45,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:42:45,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:42:45,424 INFO L87 Difference]: Start difference. First operand 2047 states and 7007 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 06:42:46,507 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 06:42:46,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:46,718 INFO L93 Difference]: Finished difference Result 2628 states and 8841 transitions. [2021-06-05 06:42:46,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:42:46,718 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 06:42:46,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:46,722 INFO L225 Difference]: With dead ends: 2628 [2021-06-05 06:42:46,722 INFO L226 Difference]: Without dead ends: 2613 [2021-06-05 06:42:46,722 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1232.6ms TimeCoverageRelationStatistics Valid=220, Invalid=1040, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 06:42:46,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2613 states. [2021-06-05 06:42:46,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2613 to 2062. [2021-06-05 06:42:46,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 2061 states have (on average 3.430373605046094) internal successors, (7070), 2061 states have internal predecessors, (7070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:46,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 7070 transitions. [2021-06-05 06:42:46,763 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 7070 transitions. Word has length 26 [2021-06-05 06:42:46,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:46,763 INFO L482 AbstractCegarLoop]: Abstraction has 2062 states and 7070 transitions. [2021-06-05 06:42:46,763 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 06:42:46,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 7070 transitions. [2021-06-05 06:42:46,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:46,765 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:46,765 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 06:42:46,965 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3252 [2021-06-05 06:42:46,966 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:46,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:46,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1197737873, now seen corresponding path program 47 times [2021-06-05 06:42:46,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:46,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175040249] [2021-06-05 06:42:46,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:47,245 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 06:42:47,245 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:47,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175040249] [2021-06-05 06:42:47,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175040249] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:47,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965989572] [2021-06-05 06:42:47,245 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 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 06:42:47,268 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:42:47,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:47,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:42:47,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:47,626 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 06:42:47,806 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 06:42:48,080 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 50 [2021-06-05 06:42:48,129 INFO L446 ElimStorePlain]: Different costs {1=[A], 2=[v_prenex_390, v_prenex_391]} [2021-06-05 06:42:48,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:48,133 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 06:42:48,134 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:48,249 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2021-06-05 06:42:48,249 INFO L628 ElimStorePlain]: treesize reduction 50, result has 69.7 percent of original size [2021-06-05 06:42:48,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:48,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:48,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:48,254 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:48,294 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:48,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:48,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:48,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:48,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:42:48,300 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:48,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:48,303 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 23 treesize of output 13 [2021-06-05 06:42:48,304 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:48,348 INFO L628 ElimStorePlain]: treesize reduction 13, result has 79.4 percent of original size [2021-06-05 06:42:48,350 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:42:48,350 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 6 variables, input treesize:179, output treesize:32 [2021-06-05 06:42:48,392 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 06:42:48,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965989572] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:48,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:48,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:42:48,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616539806] [2021-06-05 06:42:48,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:42:48,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:48,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:42:48,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:42:48,393 INFO L87 Difference]: Start difference. First operand 2062 states and 7070 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 06:42:49,043 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2021-06-05 06:42:49,508 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 119 [2021-06-05 06:42:50,014 WARN L205 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 94 [2021-06-05 06:42:50,483 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 86 [2021-06-05 06:42:50,911 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 125 [2021-06-05 06:42:51,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:51,212 INFO L93 Difference]: Finished difference Result 2678 states and 8891 transitions. [2021-06-05 06:42:51,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:42:51,212 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 06:42:51,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:51,216 INFO L225 Difference]: With dead ends: 2678 [2021-06-05 06:42:51,216 INFO L226 Difference]: Without dead ends: 2648 [2021-06-05 06:42:51,216 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 333 ImplicationChecksByTransitivity, 3006.4ms TimeCoverageRelationStatistics Valid=231, Invalid=891, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:42:51,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2021-06-05 06:42:51,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 2073. [2021-06-05 06:42:51,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2073 states, 2072 states have (on average 3.4305019305019306) internal successors, (7108), 2072 states have internal predecessors, (7108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:51,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 7108 transitions. [2021-06-05 06:42:51,240 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 7108 transitions. Word has length 26 [2021-06-05 06:42:51,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:51,240 INFO L482 AbstractCegarLoop]: Abstraction has 2073 states and 7108 transitions. [2021-06-05 06:42:51,240 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 06:42:51,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 7108 transitions. [2021-06-05 06:42:51,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:51,242 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:51,243 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 06:42:51,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3317 [2021-06-05 06:42:51,443 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:51,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:51,443 INFO L82 PathProgramCache]: Analyzing trace with hash 352643691, now seen corresponding path program 58 times [2021-06-05 06:42:51,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:51,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179620120] [2021-06-05 06:42:51,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:51,570 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 06:42:51,570 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:51,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179620120] [2021-06-05 06:42:51,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179620120] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:51,570 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891218688] [2021-06-05 06:42:51,570 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 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 06:42:51,593 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:42:51,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:51,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:42:51,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:52,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:52,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,027 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:42:52,027 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:52,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:52,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:52,034 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:52,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:52,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:52,040 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:52,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:52,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:52,047 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:52,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:52,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:52,054 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:52,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:52,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,060 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:42:52,061 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:52,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:52,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,067 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 34 treesize of output 16 [2021-06-05 06:42:52,067 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:52,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:52,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:52,074 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:52,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:52,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,078 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:52,081 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:52,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:52,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,087 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 39 treesize of output 16 [2021-06-05 06:42:52,087 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:52,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:52,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:52,094 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:52,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:52,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:52,100 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:52,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:52,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:52,107 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:52,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:52,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,110 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:52,113 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:52,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:52,116 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:42:52,116 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 13 [2021-06-05 06:42:52,116 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:52,135 INFO L628 ElimStorePlain]: treesize reduction 26, result has 44.7 percent of original size [2021-06-05 06:42:52,136 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 06:42:52,136 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:42:52,156 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 06:42:52,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891218688] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:52,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:52,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-06-05 06:42:52,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364906654] [2021-06-05 06:42:52,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:42:52,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:52,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:42:52,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:42:52,157 INFO L87 Difference]: Start difference. First operand 2073 states and 7108 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 06:42:53,115 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2021-06-05 06:42:53,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:42:53,421 INFO L93 Difference]: Finished difference Result 3338 states and 10716 transitions. [2021-06-05 06:42:53,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:42:53,421 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 06:42:53,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:42:53,425 INFO L225 Difference]: With dead ends: 3338 [2021-06-05 06:42:53,426 INFO L226 Difference]: Without dead ends: 3295 [2021-06-05 06:42:53,426 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 1034.1ms TimeCoverageRelationStatistics Valid=298, Invalid=1262, Unknown=0, NotChecked=0, Total=1560 [2021-06-05 06:42:53,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3295 states. [2021-06-05 06:42:53,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3295 to 2202. [2021-06-05 06:42:53,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 2201 states have (on average 3.452975920036347) internal successors, (7600), 2201 states have internal predecessors, (7600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:42:53,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 7600 transitions. [2021-06-05 06:42:53,456 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 7600 transitions. Word has length 26 [2021-06-05 06:42:53,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:42:53,456 INFO L482 AbstractCegarLoop]: Abstraction has 2202 states and 7600 transitions. [2021-06-05 06:42:53,456 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 06:42:53,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 7600 transitions. [2021-06-05 06:42:53,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:42:53,459 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:42:53,459 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 06:42:53,659 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3332,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:42:53,659 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:42:53,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:42:53,660 INFO L82 PathProgramCache]: Analyzing trace with hash 392132503, now seen corresponding path program 48 times [2021-06-05 06:42:53,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:42:53,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314385555] [2021-06-05 06:42:53,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:42:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:42:53,903 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 06:42:53,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:42:53,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314385555] [2021-06-05 06:42:53,904 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314385555] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:53,904 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781097257] [2021-06-05 06:42:53,904 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 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 06:42:53,933 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:42:53,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:42:53,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:42:53,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:42:54,374 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-05 06:42:54,719 INFO L446 ElimStorePlain]: Different costs {28=[v_prenex_418], 45=[A]} [2021-06-05 06:42:54,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:54,749 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 06:42:54,749 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 33 [2021-06-05 06:42:54,750 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:54,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:54,782 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:42:54,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:54,802 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:54,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:54,837 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:42:54,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 49 treesize of output 37 [2021-06-05 06:42:54,841 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:54,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:54,860 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-06-05 06:42:54,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 25 [2021-06-05 06:42:54,861 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:54,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:54,877 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-06-05 06:42:54,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 22 [2021-06-05 06:42:54,879 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:54,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:54,900 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 06:42:54,900 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 38 treesize of output 30 [2021-06-05 06:42:54,902 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:55,242 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 115 [2021-06-05 06:42:55,242 INFO L628 ElimStorePlain]: treesize reduction 162, result has 71.7 percent of original size [2021-06-05 06:42:55,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,262 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:55,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 36 [2021-06-05 06:42:55,265 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:55,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,287 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 06:42:55,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:55,289 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:55,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,311 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:42:55,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 27 treesize of output 31 [2021-06-05 06:42:55,314 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:55,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,334 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:55,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 36 [2021-06-05 06:42:55,337 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:55,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,362 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:42:55,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:42:55,363 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:55,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:42:55,377 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:55,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 32 [2021-06-05 06:42:55,382 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:42:55,521 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-06-05 06:42:55,522 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:42:55,540 INFO L550 ElimStorePlain]: Start of recursive call 1: 14 dim-0 vars, 2 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 06:42:55,540 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 16 variables, input treesize:801, output treesize:513 [2021-06-05 06:42:55,723 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2021-06-05 06:42:55,834 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 06:42:55,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781097257] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:42:55,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:42:55,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:42:55,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004435392] [2021-06-05 06:42:55,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:42:55,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:42:55,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:42:55,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:42:55,836 INFO L87 Difference]: Start difference. First operand 2202 states and 7600 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 06:42:56,482 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2021-06-05 06:42:56,862 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2021-06-05 06:42:57,315 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2021-06-05 06:42:57,576 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 94 [2021-06-05 06:42:57,990 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-06-05 06:42:58,591 WARN L205 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2021-06-05 06:42:59,312 WARN L205 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2021-06-05 06:42:59,519 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2021-06-05 06:42:59,813 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2021-06-05 06:43:00,092 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2021-06-05 06:43:00,249 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-06-05 06:43:00,727 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 41 [2021-06-05 06:43:01,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:01,002 INFO L93 Difference]: Finished difference Result 3312 states and 10745 transitions. [2021-06-05 06:43:01,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 06:43:01,003 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 06:43:01,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:01,007 INFO L225 Difference]: With dead ends: 3312 [2021-06-05 06:43:01,007 INFO L226 Difference]: Without dead ends: 3267 [2021-06-05 06:43:01,007 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 5052.0ms TimeCoverageRelationStatistics Valid=404, Invalid=2046, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:43:01,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2021-06-05 06:43:01,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 2225. [2021-06-05 06:43:01,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 2224 states have (on average 3.459982014388489) internal successors, (7695), 2224 states have internal predecessors, (7695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:01,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 7695 transitions. [2021-06-05 06:43:01,036 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 7695 transitions. Word has length 26 [2021-06-05 06:43:01,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:01,036 INFO L482 AbstractCegarLoop]: Abstraction has 2225 states and 7695 transitions. [2021-06-05 06:43:01,036 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 06:43:01,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 7695 transitions. [2021-06-05 06:43:01,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:01,038 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:01,038 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 06:43:01,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3422,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:01,239 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:01,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:01,239 INFO L82 PathProgramCache]: Analyzing trace with hash -658448197, now seen corresponding path program 49 times [2021-06-05 06:43:01,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:01,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740543757] [2021-06-05 06:43:01,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:01,440 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 06:43:01,441 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:01,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740543757] [2021-06-05 06:43:01,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740543757] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:01,441 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362834732] [2021-06-05 06:43:01,441 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 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 06:43:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:01,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:43:01,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:01,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:01,799 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:01,800 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 06:43:01,801 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:01,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:01,811 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:01,812 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 28 treesize of output 16 [2021-06-05 06:43:01,813 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:02,102 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 122 [2021-06-05 06:43:02,102 INFO L628 ElimStorePlain]: treesize reduction 71, result has 83.9 percent of original size [2021-06-05 06:43:02,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:02,118 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:02,118 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 24 [2021-06-05 06:43:02,119 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:02,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:02,130 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:02,130 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 1 [2021-06-05 06:43:02,131 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:02,244 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-05 06:43:02,245 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:02,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:02,257 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:02,257 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 26 treesize of output 24 [2021-06-05 06:43:02,258 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:02,373 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-06-05 06:43:02,374 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:02,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:02,385 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:02,385 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 06:43:02,388 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:02,515 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-05 06:43:02,516 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:02,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:02,527 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:02,527 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 06:43:02,530 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:02,632 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-06-05 06:43:02,632 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:02,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:02,645 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:02,645 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 24 [2021-06-05 06:43:02,649 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:02,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:02,659 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:02,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 24 [2021-06-05 06:43:02,661 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:02,819 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2021-06-05 06:43:02,820 INFO L628 ElimStorePlain]: treesize reduction 18, result has 92.1 percent of original size [2021-06-05 06:43:02,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:02,830 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:02,830 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 06:43:02,831 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:02,904 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:02,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:02,913 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:02,914 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 06:43:02,915 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:02,984 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:02,990 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 06:43:02,990 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 16 variables, input treesize:503, output treesize:150 [2021-06-05 06:43:03,100 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 06:43:03,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362834732] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:03,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:03,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:43:03,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796765621] [2021-06-05 06:43:03,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:43:03,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:03,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:43:03,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:43:03,101 INFO L87 Difference]: Start difference. First operand 2225 states and 7695 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 06:43:03,936 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2021-06-05 06:43:04,213 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2021-06-05 06:43:04,348 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-06-05 06:43:04,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:04,703 INFO L93 Difference]: Finished difference Result 3319 states and 10983 transitions. [2021-06-05 06:43:04,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:43:04,703 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 06:43:04,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:04,708 INFO L225 Difference]: With dead ends: 3319 [2021-06-05 06:43:04,708 INFO L226 Difference]: Without dead ends: 3289 [2021-06-05 06:43:04,708 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1607.0ms TimeCoverageRelationStatistics Valid=309, Invalid=1023, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:43:04,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-06-05 06:43:04,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2211. [2021-06-05 06:43:04,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 2210 states have (on average 3.4547511312217196) internal successors, (7635), 2210 states have internal predecessors, (7635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 7635 transitions. [2021-06-05 06:43:04,740 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 7635 transitions. Word has length 26 [2021-06-05 06:43:04,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:04,740 INFO L482 AbstractCegarLoop]: Abstraction has 2211 states and 7635 transitions. [2021-06-05 06:43:04,740 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 06:43:04,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 7635 transitions. [2021-06-05 06:43:04,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:04,743 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:04,743 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 06:43:04,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3453,108 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:04,943 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:04,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:04,944 INFO L82 PathProgramCache]: Analyzing trace with hash 578637215, now seen corresponding path program 59 times [2021-06-05 06:43:04,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:04,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484645563] [2021-06-05 06:43:04,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:05,065 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 06:43:05,066 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:05,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484645563] [2021-06-05 06:43:05,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484645563] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:05,066 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901406687] [2021-06-05 06:43:05,066 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 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 06:43:05,091 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:43:05,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:05,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:43:05,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:05,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:05,550 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:05,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,557 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 39 treesize of output 19 [2021-06-05 06:43:05,558 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:05,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:43:05,565 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:05,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,572 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 37 treesize of output 19 [2021-06-05 06:43:05,572 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:05,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:05,580 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:05,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:43:05,590 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:05,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,594 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:05,598 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:05,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,602 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:05,606 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:05,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:43:05,614 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:05,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,621 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:05,622 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:05,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,627 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,629 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 34 treesize of output 16 [2021-06-05 06:43:05,630 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:05,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,636 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:05,637 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:05,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:05,644 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:05,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,650 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2021-06-05 06:43:05,651 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:05,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:05,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:05,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:05,655 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:05,673 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:43:05,674 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 06:43:05,674 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:43:05,699 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 06:43:05,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901406687] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:05,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:05,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:43:05,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146096436] [2021-06-05 06:43:05,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:43:05,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:05,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:43:05,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:43:05,700 INFO L87 Difference]: Start difference. First operand 2211 states and 7635 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 06:43:06,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:06,640 INFO L93 Difference]: Finished difference Result 3809 states and 12432 transitions. [2021-06-05 06:43:06,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:43:06,640 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 06:43:06,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:06,646 INFO L225 Difference]: With dead ends: 3809 [2021-06-05 06:43:06,646 INFO L226 Difference]: Without dead ends: 3779 [2021-06-05 06:43:06,646 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 851.1ms TimeCoverageRelationStatistics Valid=313, Invalid=1327, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:43:06,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3779 states. [2021-06-05 06:43:06,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3779 to 2344. [2021-06-05 06:43:06,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2344 states, 2343 states have (on average 3.458386683738796) internal successors, (8103), 2343 states have internal predecessors, (8103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:06,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2344 states to 2344 states and 8103 transitions. [2021-06-05 06:43:06,683 INFO L78 Accepts]: Start accepts. Automaton has 2344 states and 8103 transitions. Word has length 26 [2021-06-05 06:43:06,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:06,683 INFO L482 AbstractCegarLoop]: Abstraction has 2344 states and 8103 transitions. [2021-06-05 06:43:06,683 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 06:43:06,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2344 states and 8103 transitions. [2021-06-05 06:43:06,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:06,685 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:06,686 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 06:43:06,886 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3481,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:06,886 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:06,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:06,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1882681429, now seen corresponding path program 60 times [2021-06-05 06:43:06,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:06,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140921787] [2021-06-05 06:43:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:07,013 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 06:43:07,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:07,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140921787] [2021-06-05 06:43:07,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140921787] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:07,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427091478] [2021-06-05 06:43:07,014 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 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 06:43:07,036 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:43:07,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:07,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:43:07,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:07,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,235 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2021-06-05 06:43:07,235 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 30 [2021-06-05 06:43:07,239 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:07,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,261 INFO L354 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2021-06-05 06:43:07,261 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 06:43:07,263 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:07,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,289 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size [2021-06-05 06:43:07,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 37 [2021-06-05 06:43:07,293 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:07,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,307 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:43:07,307 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 06:43:07,308 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:07,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,340 INFO L354 Elim1Store]: treesize reduction 12, result has 61.3 percent of original size [2021-06-05 06:43:07,341 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 06:43:07,344 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:07,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,369 INFO L354 Elim1Store]: treesize reduction 20, result has 35.5 percent of original size [2021-06-05 06:43:07,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 29 [2021-06-05 06:43:07,370 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:07,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,385 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:43:07,386 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 06:43:07,386 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:07,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,409 INFO L354 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2021-06-05 06:43:07,409 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 06:43:07,410 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:07,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,425 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:43:07,425 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 06:43:07,426 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:07,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,450 INFO L354 Elim1Store]: treesize reduction 23, result has 25.8 percent of original size [2021-06-05 06:43:07,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 26 [2021-06-05 06:43:07,451 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:07,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,475 INFO L354 Elim1Store]: treesize reduction 19, result has 38.7 percent of original size [2021-06-05 06:43:07,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 30 [2021-06-05 06:43:07,476 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:07,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,491 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:43:07,491 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 06:43:07,492 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:07,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,506 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:43:07,507 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 06:43:07,507 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:07,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,529 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:07,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 43 [2021-06-05 06:43:07,553 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:07,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,575 INFO L354 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2021-06-05 06:43:07,575 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 06:43:07,576 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:07,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:07,584 INFO L354 Elim1Store]: treesize reduction 30, result has 3.2 percent of original size [2021-06-05 06:43:07,584 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 06:43:07,585 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:07,661 INFO L628 ElimStorePlain]: treesize reduction 109, result has 41.7 percent of original size [2021-06-05 06:43:07,661 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:43:07,662 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:705, output treesize:78 [2021-06-05 06:43:07,740 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 06:43:07,741 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427091478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:07,741 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:07,741 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-06-05 06:43:07,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90264337] [2021-06-05 06:43:07,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:43:07,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:07,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:43:07,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:43:07,741 INFO L87 Difference]: Start difference. First operand 2344 states and 8103 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 06:43:08,957 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2021-06-05 06:43:09,132 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-06-05 06:43:09,561 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2021-06-05 06:43:09,780 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 06:43:10,312 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-06-05 06:43:10,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:10,449 INFO L93 Difference]: Finished difference Result 4305 states and 13885 transitions. [2021-06-05 06:43:10,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 06:43:10,450 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 06:43:10,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:10,455 INFO L225 Difference]: With dead ends: 4305 [2021-06-05 06:43:10,455 INFO L226 Difference]: Without dead ends: 4252 [2021-06-05 06:43:10,456 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 786 ImplicationChecksByTransitivity, 2375.2ms TimeCoverageRelationStatistics Valid=556, Invalid=2096, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 06:43:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2021-06-05 06:43:10,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 2347. [2021-06-05 06:43:10,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2347 states, 2346 states have (on average 3.4578005115089514) internal successors, (8112), 2346 states have internal predecessors, (8112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 8112 transitions. [2021-06-05 06:43:10,493 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 8112 transitions. Word has length 26 [2021-06-05 06:43:10,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:10,493 INFO L482 AbstractCegarLoop]: Abstraction has 2347 states and 8112 transitions. [2021-06-05 06:43:10,493 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 06:43:10,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 8112 transitions. [2021-06-05 06:43:10,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:10,495 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:10,495 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 06:43:10,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3571 [2021-06-05 06:43:10,696 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:10,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:10,696 INFO L82 PathProgramCache]: Analyzing trace with hash 534773347, now seen corresponding path program 50 times [2021-06-05 06:43:10,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:10,696 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514313070] [2021-06-05 06:43:10,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:10,955 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 06:43:10,955 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:10,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514313070] [2021-06-05 06:43:10,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514313070] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:10,955 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524309335] [2021-06-05 06:43:10,955 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 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:10,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:43:10,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:10,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-05 06:43:10,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:11,244 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-05 06:43:11,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:11,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:11,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:11,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:11,565 INFO L354 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2021-06-05 06:43:11,566 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 26 [2021-06-05 06:43:11,567 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:11,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:11,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:11,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:11,587 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-06-05 06:43:11,587 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:43:11,588 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:12,009 WARN L205 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 124 [2021-06-05 06:43:12,010 INFO L628 ElimStorePlain]: treesize reduction 296, result has 58.8 percent of original size [2021-06-05 06:43:12,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:12,033 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-06-05 06:43:12,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:12,034 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:12,201 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-05 06:43:12,201 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:12,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:12,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:12,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:12,232 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:43:12,232 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 34 treesize of output 30 [2021-06-05 06:43:12,235 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:12,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:12,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:12,256 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:12,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 34 [2021-06-05 06:43:12,258 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:12,547 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 114 [2021-06-05 06:43:12,548 INFO L628 ElimStorePlain]: treesize reduction 27, result has 93.0 percent of original size [2021-06-05 06:43:12,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:12,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:12,558 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:12,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:12,573 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:12,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 34 [2021-06-05 06:43:12,576 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:12,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:12,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:12,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:12,590 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-06-05 06:43:12,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 34 treesize of output 1 [2021-06-05 06:43:12,590 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:12,710 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-06-05 06:43:12,711 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:12,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:12,732 INFO L354 Elim1Store]: treesize reduction 4, result has 76.5 percent of original size [2021-06-05 06:43:12,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:12,734 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:12,854 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 06:43:12,855 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:12,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:12,874 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:43:12,874 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 23 treesize of output 27 [2021-06-05 06:43:12,878 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:12,993 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-05 06:43:12,993 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:12,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:13,008 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:13,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 18 treesize of output 28 [2021-06-05 06:43:13,012 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:13,141 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-06-05 06:43:13,141 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:13,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:13,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:13,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:13,161 INFO L354 Elim1Store]: treesize reduction 4, result has 78.9 percent of original size [2021-06-05 06:43:13,161 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:13,165 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:13,266 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 06:43:13,266 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:13,272 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 06:43:13,272 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 16 variables, input treesize:785, output treesize:295 [2021-06-05 06:43:13,481 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2021-06-05 06:43:13,600 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 06:43:13,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524309335] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:13,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:13,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 06:43:13,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667612295] [2021-06-05 06:43:13,601 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:43:13,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:13,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:43:13,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:43:13,601 INFO L87 Difference]: Start difference. First operand 2347 states and 8112 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 06:43:14,194 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 47 [2021-06-05 06:43:14,456 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2021-06-05 06:43:14,734 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2021-06-05 06:43:14,984 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2021-06-05 06:43:15,111 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2021-06-05 06:43:15,417 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-05 06:43:15,763 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2021-06-05 06:43:15,965 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2021-06-05 06:43:16,367 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2021-06-05 06:43:16,611 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2021-06-05 06:43:16,787 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2021-06-05 06:43:17,197 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 40 [2021-06-05 06:43:17,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:17,658 INFO L93 Difference]: Finished difference Result 3241 states and 10733 transitions. [2021-06-05 06:43:17,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-06-05 06:43:17,658 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 06:43:17,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:17,663 INFO L225 Difference]: With dead ends: 3241 [2021-06-05 06:43:17,663 INFO L226 Difference]: Without dead ends: 3211 [2021-06-05 06:43:17,663 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 3916.9ms TimeCoverageRelationStatistics Valid=353, Invalid=2197, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:43:17,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2021-06-05 06:43:17,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 2360. [2021-06-05 06:43:17,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 2359 states have (on average 3.454429843153879) internal successors, (8149), 2359 states have internal predecessors, (8149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:17,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 8149 transitions. [2021-06-05 06:43:17,694 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 8149 transitions. Word has length 26 [2021-06-05 06:43:17,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:17,695 INFO L482 AbstractCegarLoop]: Abstraction has 2360 states and 8149 transitions. [2021-06-05 06:43:17,695 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 06:43:17,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 8149 transitions. [2021-06-05 06:43:17,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:17,697 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:17,697 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 06:43:17,898 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3601,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:17,898 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:17,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:17,899 INFO L82 PathProgramCache]: Analyzing trace with hash -849869469, now seen corresponding path program 51 times [2021-06-05 06:43:17,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:17,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454513458] [2021-06-05 06:43:17,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:18,183 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 06:43:18,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:18,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454513458] [2021-06-05 06:43:18,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454513458] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:18,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529368460] [2021-06-05 06:43:18,183 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 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 06:43:18,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:43:18,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:18,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-05 06:43:18,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:18,665 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 06:43:18,872 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-05 06:43:18,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:18,983 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:18,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:43:18,984 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,348 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 123 [2021-06-05 06:43:19,348 INFO L628 ElimStorePlain]: treesize reduction 130, result has 76.2 percent of original size [2021-06-05 06:43:19,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:19,361 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:19,361 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 21 treesize of output 17 [2021-06-05 06:43:19,363 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,516 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 06:43:19,516 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:19,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:19,528 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:19,528 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 06:43:19,531 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,680 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 06:43:19,681 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:19,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:19,693 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:19,693 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 06:43:19,695 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,837 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 06:43:19,837 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:19,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:19,849 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:19,849 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 06:43:19,853 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:19,988 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-06-05 06:43:19,989 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:19,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:20,000 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:20,001 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 21 treesize of output 17 [2021-06-05 06:43:20,002 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:20,133 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-05 06:43:20,133 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:20,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:20,148 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:20,148 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 24 [2021-06-05 06:43:20,149 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:20,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:20,159 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:20,160 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 30 treesize of output 1 [2021-06-05 06:43:20,160 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:20,265 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 06:43:20,266 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:20,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:20,279 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:20,279 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 24 [2021-06-05 06:43:20,282 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:20,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:20,292 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:20,292 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 24 [2021-06-05 06:43:20,294 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:20,460 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-06-05 06:43:20,461 INFO L628 ElimStorePlain]: treesize reduction 23, result has 90.6 percent of original size [2021-06-05 06:43:20,468 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 06:43:20,468 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 16 variables, input treesize:563, output treesize:156 [2021-06-05 06:43:20,613 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2021-06-05 06:43:20,652 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 06:43:20,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529368460] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:20,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:20,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 19 [2021-06-05 06:43:20,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488268766] [2021-06-05 06:43:20,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:43:20,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:20,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:43:20,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:43:20,653 INFO L87 Difference]: Start difference. First operand 2360 states and 8149 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 06:43:21,473 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2021-06-05 06:43:21,778 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2021-06-05 06:43:21,991 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2021-06-05 06:43:22,200 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2021-06-05 06:43:22,554 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 06:43:23,010 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2021-06-05 06:43:23,447 WARN L205 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 105 [2021-06-05 06:43:23,826 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 123 [2021-06-05 06:43:24,036 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-06-05 06:43:24,529 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 108 [2021-06-05 06:43:24,939 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 127 [2021-06-05 06:43:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:25,433 INFO L93 Difference]: Finished difference Result 3613 states and 11812 transitions. [2021-06-05 06:43:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 06:43:25,433 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 06:43:25,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:25,438 INFO L225 Difference]: With dead ends: 3613 [2021-06-05 06:43:25,438 INFO L226 Difference]: Without dead ends: 3568 [2021-06-05 06:43:25,438 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 4799.5ms TimeCoverageRelationStatistics Valid=358, Invalid=1712, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:43:25,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2021-06-05 06:43:25,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 2356. [2021-06-05 06:43:25,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 2355 states have (on average 3.456900212314225) internal successors, (8141), 2355 states have internal predecessors, (8141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:25,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 8141 transitions. [2021-06-05 06:43:25,470 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 8141 transitions. Word has length 26 [2021-06-05 06:43:25,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:25,470 INFO L482 AbstractCegarLoop]: Abstraction has 2356 states and 8141 transitions. [2021-06-05 06:43:25,470 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 06:43:25,470 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 8141 transitions. [2021-06-05 06:43:25,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:25,473 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:25,473 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 06:43:25,676 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3642 [2021-06-05 06:43:25,677 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:25,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:25,677 INFO L82 PathProgramCache]: Analyzing trace with hash 955312879, now seen corresponding path program 52 times [2021-06-05 06:43:25,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:25,677 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903726480] [2021-06-05 06:43:25,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:26,042 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 06:43:26,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:26,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903726480] [2021-06-05 06:43:26,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903726480] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:26,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592530351] [2021-06-05 06:43:26,042 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 06:43:26,064 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:43:26,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:26,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:43:26,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:26,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:26,484 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:26,484 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 35 treesize of output 27 [2021-06-05 06:43:26,486 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:26,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:26,502 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:26,502 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 35 treesize of output 23 [2021-06-05 06:43:26,504 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:26,807 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2021-06-05 06:43:26,807 INFO L628 ElimStorePlain]: treesize reduction 17, result has 95.4 percent of original size [2021-06-05 06:43:26,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:26,820 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:26,821 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 06:43:26,822 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:26,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:26,833 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:26,833 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 06:43:26,834 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:26,969 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-05 06:43:26,969 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:26,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:26,981 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:26,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:43:26,983 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:26,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:26,992 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:26,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:43:26,995 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:27,117 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 06:43:27,117 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:27,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:27,133 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:27,133 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 20 [2021-06-05 06:43:27,135 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:27,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:27,147 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:27,148 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 06:43:27,152 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:27,289 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-05 06:43:27,289 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:27,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:27,305 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:27,306 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 30 treesize of output 20 [2021-06-05 06:43:27,307 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:27,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:27,318 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:27,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 24 [2021-06-05 06:43:27,323 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:27,439 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-06-05 06:43:27,439 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:27,450 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 06:43:27,450 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:407, output treesize:170 [2021-06-05 06:43:27,592 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 06:43:27,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592530351] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:27,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:27,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 06:43:27,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999652089] [2021-06-05 06:43:27,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:43:27,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:27,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:43:27,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:43:27,593 INFO L87 Difference]: Start difference. First operand 2356 states and 8141 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 06:43:28,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:28,743 INFO L93 Difference]: Finished difference Result 3106 states and 10468 transitions. [2021-06-05 06:43:28,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:43:28,743 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 06:43:28,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:28,749 INFO L225 Difference]: With dead ends: 3106 [2021-06-05 06:43:28,749 INFO L226 Difference]: Without dead ends: 3081 [2021-06-05 06:43:28,749 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 1321.4ms TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:43:28,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3081 states. [2021-06-05 06:43:28,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3081 to 2358. [2021-06-05 06:43:28,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2358 states, 2357 states have (on average 3.4560882477725925) internal successors, (8146), 2357 states have internal predecessors, (8146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:28,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2358 states to 2358 states and 8146 transitions. [2021-06-05 06:43:28,791 INFO L78 Accepts]: Start accepts. Automaton has 2358 states and 8146 transitions. Word has length 26 [2021-06-05 06:43:28,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:28,791 INFO L482 AbstractCegarLoop]: Abstraction has 2358 states and 8146 transitions. [2021-06-05 06:43:28,791 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 06:43:28,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2358 states and 8146 transitions. [2021-06-05 06:43:28,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:28,795 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:28,795 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] [2021-06-05 06:43:29,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3672 [2021-06-05 06:43:29,009 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:29,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:29,009 INFO L82 PathProgramCache]: Analyzing trace with hash -441885819, now seen corresponding path program 61 times [2021-06-05 06:43:29,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:29,009 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552374836] [2021-06-05 06:43:29,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:29,203 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 06:43:29,203 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:29,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552374836] [2021-06-05 06:43:29,203 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552374836] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:29,203 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252228972] [2021-06-05 06:43:29,203 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 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 06:43:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:29,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:43:29,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:29,645 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:29,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,649 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:43:29,650 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:29,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:29,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,657 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:29,658 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:29,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:29,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:29,666 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:29,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:29,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,671 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:29,674 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:29,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:29,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:43:29,683 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:29,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:29,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,688 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,691 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 41 treesize of output 16 [2021-06-05 06:43:29,692 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:29,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:29,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,698 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 35 treesize of output 19 [2021-06-05 06:43:29,699 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:29,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:29,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,705 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 30 treesize of output 16 [2021-06-05 06:43:29,705 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:29,708 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:29,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,711 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:29,712 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:29,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:29,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:29,719 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:29,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:29,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,725 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:29,725 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:29,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:29,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:29,732 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:29,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:29,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:29,738 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:29,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:29,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:29,744 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:29,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:29,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:29,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:29,753 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:29,773 INFO L628 ElimStorePlain]: treesize reduction 13, result has 61.8 percent of original size [2021-06-05 06:43:29,774 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 06:43:29,774 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 2 variables, input treesize:637, output treesize:15 [2021-06-05 06:43:29,795 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 06:43:29,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252228972] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:29,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:29,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 17 [2021-06-05 06:43:29,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204022991] [2021-06-05 06:43:29,795 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 06:43:29,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:29,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 06:43:29,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:43:29,796 INFO L87 Difference]: Start difference. First operand 2358 states and 8146 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 06:43:30,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:30,974 INFO L93 Difference]: Finished difference Result 3316 states and 11054 transitions. [2021-06-05 06:43:30,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 06:43:30,974 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 06:43:30,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:30,978 INFO L225 Difference]: With dead ends: 3316 [2021-06-05 06:43:30,978 INFO L226 Difference]: Without dead ends: 3273 [2021-06-05 06:43:30,978 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 1080.0ms TimeCoverageRelationStatistics Valid=415, Invalid=1477, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:43:30,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2021-06-05 06:43:31,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 2398. [2021-06-05 06:43:31,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 2397 states have (on average 3.4568210262828534) internal successors, (8286), 2397 states have internal predecessors, (8286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:31,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 8286 transitions. [2021-06-05 06:43:31,010 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 8286 transitions. Word has length 26 [2021-06-05 06:43:31,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:31,010 INFO L482 AbstractCegarLoop]: Abstraction has 2398 states and 8286 transitions. [2021-06-05 06:43:31,010 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 06:43:31,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 8286 transitions. [2021-06-05 06:43:31,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:31,013 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:31,013 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 06:43:31,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3709 [2021-06-05 06:43:31,213 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:31,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:31,214 INFO L82 PathProgramCache]: Analyzing trace with hash 483608047, now seen corresponding path program 62 times [2021-06-05 06:43:31,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:31,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345146915] [2021-06-05 06:43:31,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:31,401 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 06:43:31,401 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:31,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345146915] [2021-06-05 06:43:31,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345146915] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:31,401 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911810590] [2021-06-05 06:43:31,401 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 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 06:43:31,423 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:43:31,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:31,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:43:31,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:31,742 INFO L446 ElimStorePlain]: Different costs {3=[A, v_prenex_497], 5=[v_prenex_493, v_prenex_495]} [2021-06-05 06:43:31,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:31,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:31,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:31,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:31,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:31,753 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:31,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:31,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:31,758 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:31,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:31,759 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:31,846 INFO L628 ElimStorePlain]: treesize reduction 147, result has 42.1 percent of original size [2021-06-05 06:43:31,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:31,850 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 06:43:31,851 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:31,878 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:31,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:31,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:31,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:43:31,883 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:31,906 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:31,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:31,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:31,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:31,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:31,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:31,912 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:31,932 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:31,934 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 06:43:31,934 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 8 variables, input treesize:307, output treesize:32 [2021-06-05 06:43:31,976 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 06:43:31,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911810590] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:31,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:31,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-05 06:43:31,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170335357] [2021-06-05 06:43:31,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:43:31,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:31,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:43:31,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:43:31,977 INFO L87 Difference]: Start difference. First operand 2398 states and 8286 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 06:43:33,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:33,408 INFO L93 Difference]: Finished difference Result 3303 states and 11080 transitions. [2021-06-05 06:43:33,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:43:33,408 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 06:43:33,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:33,413 INFO L225 Difference]: With dead ends: 3303 [2021-06-05 06:43:33,413 INFO L226 Difference]: Without dead ends: 3269 [2021-06-05 06:43:33,413 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 1422.9ms TimeCoverageRelationStatistics Valid=478, Invalid=1592, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:43:33,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2021-06-05 06:43:33,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 2372. [2021-06-05 06:43:33,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2372 states, 2371 states have (on average 3.4571910586250527) internal successors, (8197), 2371 states have internal predecessors, (8197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:33,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 8197 transitions. [2021-06-05 06:43:33,448 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 8197 transitions. Word has length 26 [2021-06-05 06:43:33,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:33,448 INFO L482 AbstractCegarLoop]: Abstraction has 2372 states and 8197 transitions. [2021-06-05 06:43:33,448 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 06:43:33,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 8197 transitions. [2021-06-05 06:43:33,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:33,452 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:33,452 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 06:43:33,655 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3799,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:33,656 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:33,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:33,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1804783987, now seen corresponding path program 53 times [2021-06-05 06:43:33,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:33,656 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639534604] [2021-06-05 06:43:33,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:33,926 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 06:43:33,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:33,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639534604] [2021-06-05 06:43:33,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639534604] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:33,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003049276] [2021-06-05 06:43:33,926 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 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 06:43:33,948 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:43:33,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:33,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 06:43:33,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:34,356 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 06:43:34,603 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 66 [2021-06-05 06:43:34,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:34,738 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:34,739 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:34,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 30 treesize of output 16 [2021-06-05 06:43:34,740 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:34,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:34,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:34,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:43:34,746 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:34,827 INFO L628 ElimStorePlain]: treesize reduction 69, result has 56.3 percent of original size [2021-06-05 06:43:34,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:34,831 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 06:43:34,832 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:34,859 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:34,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:34,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:34,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:43:34,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:43:34,864 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:34,889 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:34,891 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2021-06-05 06:43:34,891 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 9 variables, input treesize:201, output treesize:32 [2021-06-05 06:43:34,926 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 06:43:34,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003049276] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:34,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:34,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:43:34,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130040249] [2021-06-05 06:43:34,926 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:43:34,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:34,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:43:34,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:43:34,926 INFO L87 Difference]: Start difference. First operand 2372 states and 8197 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 06:43:35,749 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 06:43:36,405 WARN L205 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 108 [2021-06-05 06:43:36,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:36,576 INFO L93 Difference]: Finished difference Result 3196 states and 10649 transitions. [2021-06-05 06:43:36,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:43:36,577 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 06:43:36,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:36,581 INFO L225 Difference]: With dead ends: 3196 [2021-06-05 06:43:36,581 INFO L226 Difference]: Without dead ends: 3151 [2021-06-05 06:43:36,582 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 2004.6ms TimeCoverageRelationStatistics Valid=191, Invalid=865, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:43:36,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3151 states. [2021-06-05 06:43:36,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3151 to 2383. [2021-06-05 06:43:36,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2383 states, 2382 states have (on average 3.4554995801847186) internal successors, (8231), 2382 states have internal predecessors, (8231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:36,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2383 states to 2383 states and 8231 transitions. [2021-06-05 06:43:36,612 INFO L78 Accepts]: Start accepts. Automaton has 2383 states and 8231 transitions. Word has length 26 [2021-06-05 06:43:36,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:36,612 INFO L482 AbstractCegarLoop]: Abstraction has 2383 states and 8231 transitions. [2021-06-05 06:43:36,612 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 06:43:36,612 INFO L276 IsEmpty]: Start isEmpty. Operand 2383 states and 8231 transitions. [2021-06-05 06:43:36,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:36,615 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:36,615 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 06:43:36,815 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3813 [2021-06-05 06:43:36,815 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:36,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:36,816 INFO L82 PathProgramCache]: Analyzing trace with hash 676615347, now seen corresponding path program 54 times [2021-06-05 06:43:36,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:36,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958933690] [2021-06-05 06:43:36,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:37,072 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 06:43:37,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:37,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958933690] [2021-06-05 06:43:37,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958933690] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:37,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007544677] [2021-06-05 06:43:37,073 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 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 06:43:37,104 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:43:37,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:37,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-05 06:43:37,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:37,627 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2021-06-05 06:43:37,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:37,717 INFO L354 Elim1Store]: treesize reduction 4, result has 81.0 percent of original size [2021-06-05 06:43:37,717 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:43:37,720 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:37,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:37,737 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:37,737 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 36 [2021-06-05 06:43:37,742 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,111 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 102 [2021-06-05 06:43:38,112 INFO L628 ElimStorePlain]: treesize reduction 32, result has 94.4 percent of original size [2021-06-05 06:43:38,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,135 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-06-05 06:43:38,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 42 treesize of output 30 [2021-06-05 06:43:38,136 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,158 INFO L354 Elim1Store]: treesize reduction 4, result has 81.0 percent of original size [2021-06-05 06:43:38,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 42 treesize of output 34 [2021-06-05 06:43:38,161 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,332 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 06:43:38,332 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:38,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,354 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-06-05 06:43:38,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 31 [2021-06-05 06:43:38,356 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,377 INFO L354 Elim1Store]: treesize reduction 4, result has 81.0 percent of original size [2021-06-05 06:43:38,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 38 [2021-06-05 06:43:38,379 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,546 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-06-05 06:43:38,546 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:38,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,565 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:38,565 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 42 treesize of output 38 [2021-06-05 06:43:38,568 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,588 INFO L354 Elim1Store]: treesize reduction 4, result has 81.0 percent of original size [2021-06-05 06:43:38,588 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 34 [2021-06-05 06:43:38,590 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,920 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2021-06-05 06:43:38,921 INFO L628 ElimStorePlain]: treesize reduction 19, result has 95.7 percent of original size [2021-06-05 06:43:38,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,943 INFO L354 Elim1Store]: treesize reduction 4, result has 81.0 percent of original size [2021-06-05 06:43:38,944 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 3 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 36 [2021-06-05 06:43:38,947 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:38,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:38,964 INFO L354 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2021-06-05 06:43:38,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 42 treesize of output 32 [2021-06-05 06:43:38,965 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:39,105 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 06:43:39,106 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:39,116 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 06:43:39,116 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 10 variables, input treesize:613, output treesize:428 [2021-06-05 06:43:39,261 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 36 [2021-06-05 06:43:39,423 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 06:43:39,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007544677] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:39,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:39,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2021-06-05 06:43:39,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941031239] [2021-06-05 06:43:39,423 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:43:39,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:39,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:43:39,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:43:39,424 INFO L87 Difference]: Start difference. First operand 2383 states and 8231 transitions. Second operand has 20 states, 20 states have (on average 2.45) 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 06:43:40,543 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2021-06-05 06:43:40,993 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2021-06-05 06:43:41,425 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-06-05 06:43:41,602 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 40 [2021-06-05 06:43:41,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:41,956 INFO L93 Difference]: Finished difference Result 3199 states and 10757 transitions. [2021-06-05 06:43:41,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:43:41,956 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) 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 06:43:41,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:41,961 INFO L225 Difference]: With dead ends: 3199 [2021-06-05 06:43:41,961 INFO L226 Difference]: Without dead ends: 3174 [2021-06-05 06:43:41,961 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 2520.8ms TimeCoverageRelationStatistics Valid=203, Invalid=1129, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:43:41,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2021-06-05 06:43:41,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 2376. [2021-06-05 06:43:41,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2376 states, 2375 states have (on average 3.4530526315789474) internal successors, (8201), 2375 states have internal predecessors, (8201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:41,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2376 states to 2376 states and 8201 transitions. [2021-06-05 06:43:41,993 INFO L78 Accepts]: Start accepts. Automaton has 2376 states and 8201 transitions. Word has length 26 [2021-06-05 06:43:41,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:41,993 INFO L482 AbstractCegarLoop]: Abstraction has 2376 states and 8201 transitions. [2021-06-05 06:43:41,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.45) 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 06:43:41,993 INFO L276 IsEmpty]: Start isEmpty. Operand 2376 states and 8201 transitions. [2021-06-05 06:43:41,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:41,995 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:41,995 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 06:43:42,197 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3830,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:42,197 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:42,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:42,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1700400349, now seen corresponding path program 55 times [2021-06-05 06:43:42,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:42,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455118985] [2021-06-05 06:43:42,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:42,419 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 06:43:42,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:42,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455118985] [2021-06-05 06:43:42,420 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455118985] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:42,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820994341] [2021-06-05 06:43:42,420 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 06:43:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:42,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 27 conjunts are in the unsatisfiable core [2021-06-05 06:43:42,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:42,881 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 06:43:42,956 INFO L446 ElimStorePlain]: Different costs {2=[v_prenex_536, A, v_prenex_538, v_prenex_539, v_prenex_543, v_prenex_533, v_prenex_535], 3=[v_prenex_541]} [2021-06-05 06:43:42,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:42,971 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:42,971 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 06:43:42,972 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:42,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:42,988 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:42,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:43:42,989 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:43,312 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 126 [2021-06-05 06:43:43,312 INFO L628 ElimStorePlain]: treesize reduction 71, result has 84.0 percent of original size [2021-06-05 06:43:43,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:43,326 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:43,326 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 06:43:43,327 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:43,462 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-05 06:43:43,462 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:43,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:43,478 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:43,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 24 [2021-06-05 06:43:43,479 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:43,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:43,490 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:43,490 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 1 [2021-06-05 06:43:43,490 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:43,601 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 06:43:43,601 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:43,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:43,615 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:43,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 24 [2021-06-05 06:43:43,619 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:43,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:43,630 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:43,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 24 [2021-06-05 06:43:43,632 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:43,808 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 104 [2021-06-05 06:43:43,809 INFO L628 ElimStorePlain]: treesize reduction 18, result has 93.2 percent of original size [2021-06-05 06:43:43,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:43,820 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:43,820 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 21 treesize of output 17 [2021-06-05 06:43:43,822 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:43,907 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:43,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:43,917 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:43,917 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 06:43:43,921 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:43,997 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:44,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:44,007 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:44,007 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 06:43:44,009 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:44,082 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:44,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:44,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:44,091 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:44,092 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 06:43:44,095 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:44,163 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:44,168 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 06:43:44,168 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 16 variables, input treesize:507, output treesize:154 [2021-06-05 06:43:44,283 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 06:43:44,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820994341] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:44,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:44,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 06:43:44,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195068116] [2021-06-05 06:43:44,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:43:44,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:44,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:43:44,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:43:44,284 INFO L87 Difference]: Start difference. First operand 2376 states and 8201 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 06:43:45,128 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 06:43:45,308 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-06-05 06:43:45,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:45,616 INFO L93 Difference]: Finished difference Result 3405 states and 11394 transitions. [2021-06-05 06:43:45,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 06:43:45,617 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 06:43:45,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:45,621 INFO L225 Difference]: With dead ends: 3405 [2021-06-05 06:43:45,621 INFO L226 Difference]: Without dead ends: 3375 [2021-06-05 06:43:45,621 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1486.8ms TimeCoverageRelationStatistics Valid=234, Invalid=888, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:43:45,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3375 states. [2021-06-05 06:43:45,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3375 to 2353. [2021-06-05 06:43:45,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2353 states, 2352 states have (on average 3.453231292517007) internal successors, (8122), 2352 states have internal predecessors, (8122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:45,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2353 states to 2353 states and 8122 transitions. [2021-06-05 06:43:45,653 INFO L78 Accepts]: Start accepts. Automaton has 2353 states and 8122 transitions. Word has length 26 [2021-06-05 06:43:45,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:45,653 INFO L482 AbstractCegarLoop]: Abstraction has 2353 states and 8122 transitions. [2021-06-05 06:43:45,653 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 06:43:45,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2353 states and 8122 transitions. [2021-06-05 06:43:45,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:45,655 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:45,656 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 06:43:45,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3865,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:45,856 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:45,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:45,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1133811217, now seen corresponding path program 56 times [2021-06-05 06:43:45,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:45,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599116664] [2021-06-05 06:43:45,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:46,082 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 06:43:46,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:46,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599116664] [2021-06-05 06:43:46,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599116664] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:46,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694274522] [2021-06-05 06:43:46,083 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 06:43:46,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:43:46,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:46,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 06:43:46,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:46,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:46,296 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:46,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:43:46,297 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:46,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:46,306 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:46,306 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 16 treesize of output 18 [2021-06-05 06:43:46,309 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:46,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:46,316 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:46,316 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 06:43:46,317 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:46,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:46,326 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:46,326 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 35 treesize of output 27 [2021-06-05 06:43:46,329 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:46,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:46,339 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:46,339 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 06:43:46,342 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:46,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:46,353 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:46,353 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 35 treesize of output 23 [2021-06-05 06:43:46,354 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:46,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:46,362 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:46,362 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 06:43:46,363 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:46,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:46,370 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:46,370 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 06:43:46,371 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:46,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:46,381 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:46,381 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 28 treesize of output 1 [2021-06-05 06:43:46,381 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:46,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:46,393 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:46,393 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 06:43:46,394 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:46,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:46,406 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:46,406 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 35 treesize of output 23 [2021-06-05 06:43:46,407 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:46,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:46,417 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:46,418 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 1 [2021-06-05 06:43:46,418 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:46,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:46,428 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:46,428 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 35 treesize of output 1 [2021-06-05 06:43:46,429 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:46,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:46,437 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:46,437 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 06:43:46,438 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:46,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:46,446 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-06-05 06:43:46,446 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 06:43:46,446 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:46,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:46,453 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-06-05 06:43:46,454 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 06:43:46,455 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:46,562 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2021-06-05 06:43:46,563 INFO L628 ElimStorePlain]: treesize reduction 16, result has 85.6 percent of original size [2021-06-05 06:43:46,563 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 6 xjuncts. [2021-06-05 06:43:46,564 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 1 variables, input treesize:589, output treesize:95 [2021-06-05 06:43:46,658 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 06:43:46,658 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694274522] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:46,658 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:46,658 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:43:46,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133824631] [2021-06-05 06:43:46,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 06:43:46,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:46,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 06:43:46,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:43:46,659 INFO L87 Difference]: Start difference. First operand 2353 states and 8122 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 06:43:47,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:47,521 INFO L93 Difference]: Finished difference Result 3078 states and 10413 transitions. [2021-06-05 06:43:47,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:43:47,521 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 06:43:47,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:47,526 INFO L225 Difference]: With dead ends: 3078 [2021-06-05 06:43:47,526 INFO L226 Difference]: Without dead ends: 3063 [2021-06-05 06:43:47,526 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 848.0ms TimeCoverageRelationStatistics Valid=167, Invalid=763, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:43:47,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3063 states. [2021-06-05 06:43:47,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3063 to 2355. [2021-06-05 06:43:47,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 2354 states have (on average 3.45624468988955) internal successors, (8136), 2354 states have internal predecessors, (8136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:47,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 8136 transitions. [2021-06-05 06:43:47,557 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 8136 transitions. Word has length 26 [2021-06-05 06:43:47,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:47,557 INFO L482 AbstractCegarLoop]: Abstraction has 2355 states and 8136 transitions. [2021-06-05 06:43:47,557 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 06:43:47,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 8136 transitions. [2021-06-05 06:43:47,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-06-05 06:43:47,559 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:47,559 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 06:43:47,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3895 [2021-06-05 06:43:47,760 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:47,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:47,760 INFO L82 PathProgramCache]: Analyzing trace with hash 118535907, now seen corresponding path program 63 times [2021-06-05 06:43:47,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:47,760 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391408533] [2021-06-05 06:43:47,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:47,917 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 06:43:47,917 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:47,917 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391408533] [2021-06-05 06:43:47,917 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391408533] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:47,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396804718] [2021-06-05 06:43:47,918 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 06:43:47,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:43:47,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:47,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 06:43:47,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:48,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,376 INFO L354 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2021-06-05 06:43:48,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 35 [2021-06-05 06:43:48,377 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:48,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,401 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:48,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:43:48,407 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:48,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,429 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:43:48,429 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 06:43:48,435 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:48,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,456 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:43:48,456 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 06:43:48,458 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:48,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,481 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-05 06:43:48,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 28 [2021-06-05 06:43:48,483 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:48,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,498 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:43:48,498 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 06:43:48,498 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:48,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,524 INFO L354 Elim1Store]: treesize reduction 14, result has 51.7 percent of original size [2021-06-05 06:43:48,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:43:48,527 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:48,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,543 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:43:48,543 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 06:43:48,543 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:48,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,558 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:43:48,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:43:48,559 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:48,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,574 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:43:48,574 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 06:43:48,574 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:48,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,597 INFO L354 Elim1Store]: treesize reduction 18, result has 37.9 percent of original size [2021-06-05 06:43:48,597 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 06:43:48,599 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:48,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,613 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:43:48,614 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 06:43:48,614 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:48,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,635 INFO L354 Elim1Store]: treesize reduction 19, result has 34.5 percent of original size [2021-06-05 06:43:48,636 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 06:43:48,637 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:48,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,650 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:43:48,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:43:48,651 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:48,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,664 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:43:48,665 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 06:43:48,665 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:48,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:43:48,673 INFO L354 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2021-06-05 06:43:48,673 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 06:43:48,673 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:43:48,757 INFO L628 ElimStorePlain]: treesize reduction 92, result has 50.3 percent of original size [2021-06-05 06:43:48,758 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 06:43:48,758 INFO L247 ElimStorePlain]: Needed 17 recursive calls to eliminate 2 variables, input treesize:713, output treesize:75 [2021-06-05 06:43:48,828 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 06:43:48,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396804718] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:48,829 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:48,829 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2021-06-05 06:43:48,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195840302] [2021-06-05 06:43:48,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 06:43:48,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:48,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 06:43:48,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:43:48,829 INFO L87 Difference]: Start difference. First operand 2355 states and 8136 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 06:43:51,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:51,100 INFO L93 Difference]: Finished difference Result 3597 states and 11910 transitions. [2021-06-05 06:43:51,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:43:51,100 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 06:43:51,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:51,105 INFO L225 Difference]: With dead ends: 3597 [2021-06-05 06:43:51,105 INFO L226 Difference]: Without dead ends: 3553 [2021-06-05 06:43:51,106 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 1947.7ms TimeCoverageRelationStatistics Valid=585, Invalid=2495, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 06:43:51,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3553 states. [2021-06-05 06:43:51,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3553 to 2397. [2021-06-05 06:43:51,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 2396 states have (on average 3.451585976627713) internal successors, (8270), 2396 states have internal predecessors, (8270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:51,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 8270 transitions. [2021-06-05 06:43:51,139 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 8270 transitions. Word has length 26 [2021-06-05 06:43:51,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:51,139 INFO L482 AbstractCegarLoop]: Abstraction has 2397 states and 8270 transitions. [2021-06-05 06:43:51,140 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 06:43:51,140 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 8270 transitions. [2021-06-05 06:43:51,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:51,142 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:51,142 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 06:43:51,344 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3916 [2021-06-05 06:43:51,344 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:51,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:51,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1407294025, now seen corresponding path program 57 times [2021-06-05 06:43:51,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:51,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904577390] [2021-06-05 06:43:51,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:51,380 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 06:43:51,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:51,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904577390] [2021-06-05 06:43:51,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904577390] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:51,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250060321] [2021-06-05 06:43:51,381 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 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 06:43:51,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:43:51,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:51,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:51,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:51,494 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 06:43:51,495 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250060321] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:51,495 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:51,495 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:43:51,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845813510] [2021-06-05 06:43:51,495 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:43:51,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:51,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:43:51,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:43:51,495 INFO L87 Difference]: Start difference. First operand 2397 states and 8270 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 06:43:52,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:52,343 INFO L93 Difference]: Finished difference Result 5478 states and 17219 transitions. [2021-06-05 06:43:52,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:43:52,344 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 06:43:52,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:52,351 INFO L225 Difference]: With dead ends: 5478 [2021-06-05 06:43:52,351 INFO L226 Difference]: Without dead ends: 5478 [2021-06-05 06:43:52,351 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 499.2ms TimeCoverageRelationStatistics Valid=802, Invalid=2858, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 06:43:52,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5478 states. [2021-06-05 06:43:52,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5478 to 2593. [2021-06-05 06:43:52,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2593 states, 2592 states have (on average 3.493827160493827) internal successors, (9056), 2592 states have internal predecessors, (9056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:52,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2593 states to 2593 states and 9056 transitions. [2021-06-05 06:43:52,399 INFO L78 Accepts]: Start accepts. Automaton has 2593 states and 9056 transitions. Word has length 28 [2021-06-05 06:43:52,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:52,399 INFO L482 AbstractCegarLoop]: Abstraction has 2593 states and 9056 transitions. [2021-06-05 06:43:52,399 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 06:43:52,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2593 states and 9056 transitions. [2021-06-05 06:43:52,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:52,402 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:52,402 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 06:43:52,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4017,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:52,603 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:52,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:52,603 INFO L82 PathProgramCache]: Analyzing trace with hash 430975181, now seen corresponding path program 58 times [2021-06-05 06:43:52,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:52,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714986140] [2021-06-05 06:43:52,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:52,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:52,641 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 06:43:52,641 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:52,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714986140] [2021-06-05 06:43:52,641 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714986140] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:52,641 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144922705] [2021-06-05 06:43:52,641 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 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 06:43:52,664 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:43:52,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:52,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:52,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:52,761 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 06:43:52,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144922705] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:52,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:52,761 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:43:52,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964022607] [2021-06-05 06:43:52,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:43:52,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:52,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:43:52,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:43:52,762 INFO L87 Difference]: Start difference. First operand 2593 states and 9056 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 06:43:53,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:53,924 INFO L93 Difference]: Finished difference Result 7165 states and 22139 transitions. [2021-06-05 06:43:53,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 06:43:53,924 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 06:43:53,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:53,935 INFO L225 Difference]: With dead ends: 7165 [2021-06-05 06:43:53,935 INFO L226 Difference]: Without dead ends: 7165 [2021-06-05 06:43:53,936 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2023 ImplicationChecksByTransitivity, 685.8ms TimeCoverageRelationStatistics Valid=1110, Invalid=4590, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 06:43:53,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7165 states. [2021-06-05 06:43:53,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7165 to 2604. [2021-06-05 06:43:53,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2604 states, 2603 states have (on average 3.4998079139454474) internal successors, (9110), 2603 states have internal predecessors, (9110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:54,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2604 states to 2604 states and 9110 transitions. [2021-06-05 06:43:54,002 INFO L78 Accepts]: Start accepts. Automaton has 2604 states and 9110 transitions. Word has length 28 [2021-06-05 06:43:54,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:54,002 INFO L482 AbstractCegarLoop]: Abstraction has 2604 states and 9110 transitions. [2021-06-05 06:43:54,002 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 06:43:54,002 INFO L276 IsEmpty]: Start isEmpty. Operand 2604 states and 9110 transitions. [2021-06-05 06:43:54,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:54,006 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:54,006 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 06:43:54,206 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4018,122 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:54,206 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:54,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:54,207 INFO L82 PathProgramCache]: Analyzing trace with hash 997927261, now seen corresponding path program 59 times [2021-06-05 06:43:54,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:54,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152177300] [2021-06-05 06:43:54,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:54,244 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 06:43:54,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:54,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152177300] [2021-06-05 06:43:54,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152177300] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:54,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770013038] [2021-06-05 06:43:54,244 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 06:43:54,267 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:43:54,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:54,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:54,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:54,367 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 06:43:54,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770013038] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:54,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:54,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:43:54,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460138791] [2021-06-05 06:43:54,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:43:54,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:54,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:43:54,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:43:54,367 INFO L87 Difference]: Start difference. First operand 2604 states and 9110 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 06:43:55,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:55,453 INFO L93 Difference]: Finished difference Result 6563 states and 20685 transitions. [2021-06-05 06:43:55,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 06:43:55,453 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 06:43:55,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:55,461 INFO L225 Difference]: With dead ends: 6563 [2021-06-05 06:43:55,462 INFO L226 Difference]: Without dead ends: 6563 [2021-06-05 06:43:55,462 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2006 ImplicationChecksByTransitivity, 656.1ms TimeCoverageRelationStatistics Valid=1099, Invalid=4451, Unknown=0, NotChecked=0, Total=5550 [2021-06-05 06:43:55,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6563 states. [2021-06-05 06:43:55,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6563 to 2552. [2021-06-05 06:43:55,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2551 states have (on average 3.480203841630733) internal successors, (8878), 2551 states have internal predecessors, (8878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:55,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 8878 transitions. [2021-06-05 06:43:55,514 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 8878 transitions. Word has length 28 [2021-06-05 06:43:55,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:55,514 INFO L482 AbstractCegarLoop]: Abstraction has 2552 states and 8878 transitions. [2021-06-05 06:43:55,514 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 06:43:55,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 8878 transitions. [2021-06-05 06:43:55,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:55,517 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:55,517 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 06:43:55,717 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4019,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:43:55,718 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:55,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:55,718 INFO L82 PathProgramCache]: Analyzing trace with hash -2115011713, now seen corresponding path program 60 times [2021-06-05 06:43:55,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:55,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385634486] [2021-06-05 06:43:55,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:55,758 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 06:43:55,759 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:55,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385634486] [2021-06-05 06:43:55,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385634486] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:55,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357366778] [2021-06-05 06:43:55,759 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 06:43:55,782 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:43:55,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:55,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:55,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:55,869 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 06:43:55,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357366778] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:55,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:55,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:43:55,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068891041] [2021-06-05 06:43:55,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:43:55,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:55,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:43:55,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:43:55,870 INFO L87 Difference]: Start difference. First operand 2552 states and 8878 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 06:43:56,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:56,898 INFO L93 Difference]: Finished difference Result 5564 states and 17386 transitions. [2021-06-05 06:43:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 06:43:56,899 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 06:43:56,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:56,906 INFO L225 Difference]: With dead ends: 5564 [2021-06-05 06:43:56,907 INFO L226 Difference]: Without dead ends: 5564 [2021-06-05 06:43:56,907 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 589.0ms TimeCoverageRelationStatistics Valid=904, Invalid=3652, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 06:43:56,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5564 states. [2021-06-05 06:43:56,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5564 to 2570. [2021-06-05 06:43:56,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2570 states, 2569 states have (on average 3.474114441416894) internal successors, (8925), 2569 states have internal predecessors, (8925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2570 states to 2570 states and 8925 transitions. [2021-06-05 06:43:56,980 INFO L78 Accepts]: Start accepts. Automaton has 2570 states and 8925 transitions. Word has length 28 [2021-06-05 06:43:56,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:56,981 INFO L482 AbstractCegarLoop]: Abstraction has 2570 states and 8925 transitions. [2021-06-05 06:43:56,981 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 06:43:56,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2570 states and 8925 transitions. [2021-06-05 06:43:56,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:56,983 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:56,984 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 06:43:57,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4020 [2021-06-05 06:43:57,184 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:57,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:57,184 INFO L82 PathProgramCache]: Analyzing trace with hash 970325317, now seen corresponding path program 64 times [2021-06-05 06:43:57,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:57,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416958703] [2021-06-05 06:43:57,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:57,223 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 06:43:57,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:57,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416958703] [2021-06-05 06:43:57,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416958703] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:57,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067702104] [2021-06-05 06:43:57,224 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 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 06:43:57,246 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:43:57,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:57,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:43:57,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:57,326 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 06:43:57,326 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067702104] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:57,326 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:57,326 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 06:43:57,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910350297] [2021-06-05 06:43:57,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:43:57,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:57,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:43:57,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:43:57,327 INFO L87 Difference]: Start difference. First operand 2570 states and 8925 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 06:43:57,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:57,864 INFO L93 Difference]: Finished difference Result 4970 states and 15740 transitions. [2021-06-05 06:43:57,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 06:43:57,864 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 06:43:57,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:57,871 INFO L225 Difference]: With dead ends: 4970 [2021-06-05 06:43:57,871 INFO L226 Difference]: Without dead ends: 4970 [2021-06-05 06:43:57,872 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 291.7ms TimeCoverageRelationStatistics Valid=383, Invalid=1339, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 06:43:57,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4970 states. [2021-06-05 06:43:57,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4970 to 2640. [2021-06-05 06:43:57,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2640 states, 2639 states have (on average 3.4588859416445623) internal successors, (9128), 2639 states have internal predecessors, (9128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:57,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2640 states to 2640 states and 9128 transitions. [2021-06-05 06:43:57,919 INFO L78 Accepts]: Start accepts. Automaton has 2640 states and 9128 transitions. Word has length 28 [2021-06-05 06:43:57,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:57,919 INFO L482 AbstractCegarLoop]: Abstraction has 2640 states and 9128 transitions. [2021-06-05 06:43:57,919 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 06:43:57,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2640 states and 9128 transitions. [2021-06-05 06:43:57,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:57,922 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:57,922 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 06:43:58,124 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4021 [2021-06-05 06:43:58,125 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:58,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:58,125 INFO L82 PathProgramCache]: Analyzing trace with hash 828956685, now seen corresponding path program 61 times [2021-06-05 06:43:58,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:58,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078782264] [2021-06-05 06:43:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:58,151 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 06:43:58,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:58,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078782264] [2021-06-05 06:43:58,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078782264] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:58,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988988659] [2021-06-05 06:43:58,152 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 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 06:43:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:58,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:43:58,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:58,228 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 06:43:58,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988988659] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:58,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:58,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:43:58,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223533360] [2021-06-05 06:43:58,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:43:58,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:58,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:43:58,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:43:58,229 INFO L87 Difference]: Start difference. First operand 2640 states and 9128 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 06:43:58,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:58,391 INFO L93 Difference]: Finished difference Result 4201 states and 13809 transitions. [2021-06-05 06:43:58,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:43:58,391 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 06:43:58,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:58,398 INFO L225 Difference]: With dead ends: 4201 [2021-06-05 06:43:58,398 INFO L226 Difference]: Without dead ends: 4150 [2021-06-05 06:43:58,398 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 101.9ms TimeCoverageRelationStatistics Valid=139, Invalid=241, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:43:58,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4150 states. [2021-06-05 06:43:58,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4150 to 2983. [2021-06-05 06:43:58,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2983 states, 2982 states have (on average 3.5087189805499666) internal successors, (10463), 2982 states have internal predecessors, (10463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:58,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2983 states to 2983 states and 10463 transitions. [2021-06-05 06:43:58,444 INFO L78 Accepts]: Start accepts. Automaton has 2983 states and 10463 transitions. Word has length 28 [2021-06-05 06:43:58,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:58,444 INFO L482 AbstractCegarLoop]: Abstraction has 2983 states and 10463 transitions. [2021-06-05 06:43:58,444 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 06:43:58,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2983 states and 10463 transitions. [2021-06-05 06:43:58,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:58,448 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:58,448 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 06:43:58,652 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4022 [2021-06-05 06:43:58,653 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:58,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:58,653 INFO L82 PathProgramCache]: Analyzing trace with hash 391987977, now seen corresponding path program 62 times [2021-06-05 06:43:58,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:58,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629481722] [2021-06-05 06:43:58,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:58,683 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 06:43:58,684 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:58,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629481722] [2021-06-05 06:43:58,684 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629481722] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:58,684 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177103469] [2021-06-05 06:43:58,684 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 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 06:43:58,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:43:58,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:58,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:43:58,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:58,780 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 06:43:58,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177103469] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:58,780 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:58,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:43:58,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106528709] [2021-06-05 06:43:58,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:43:58,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:58,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:43:58,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:43:58,781 INFO L87 Difference]: Start difference. First operand 2983 states and 10463 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 06:43:59,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:43:59,326 INFO L93 Difference]: Finished difference Result 4805 states and 15497 transitions. [2021-06-05 06:43:59,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 06:43:59,326 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 06:43:59,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:43:59,332 INFO L225 Difference]: With dead ends: 4805 [2021-06-05 06:43:59,332 INFO L226 Difference]: Without dead ends: 4758 [2021-06-05 06:43:59,333 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 582 ImplicationChecksByTransitivity, 340.3ms TimeCoverageRelationStatistics Valid=515, Invalid=1465, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 06:43:59,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4758 states. [2021-06-05 06:43:59,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4758 to 3157. [2021-06-05 06:43:59,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3157 states, 3156 states have (on average 3.5218631178707223) internal successors, (11115), 3156 states have internal predecessors, (11115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:43:59,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3157 states to 3157 states and 11115 transitions. [2021-06-05 06:43:59,382 INFO L78 Accepts]: Start accepts. Automaton has 3157 states and 11115 transitions. Word has length 28 [2021-06-05 06:43:59,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:43:59,382 INFO L482 AbstractCegarLoop]: Abstraction has 3157 states and 11115 transitions. [2021-06-05 06:43:59,382 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 06:43:59,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3157 states and 11115 transitions. [2021-06-05 06:43:59,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:43:59,386 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:43:59,386 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 06:43:59,586 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4023 [2021-06-05 06:43:59,586 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:43:59,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:43:59,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1928077453, now seen corresponding path program 63 times [2021-06-05 06:43:59,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:43:59,587 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178612976] [2021-06-05 06:43:59,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:43:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:43:59,617 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 06:43:59,617 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:43:59,617 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178612976] [2021-06-05 06:43:59,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178612976] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:59,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650770756] [2021-06-05 06:43:59,618 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 06:43:59,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:43:59,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:43:59,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:43:59,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:43:59,723 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 06:43:59,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650770756] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:43:59,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:43:59,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:43:59,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878488781] [2021-06-05 06:43:59,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:43:59,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:43:59,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:43:59,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:43:59,724 INFO L87 Difference]: Start difference. First operand 3157 states and 11115 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 06:44:00,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:00,355 INFO L93 Difference]: Finished difference Result 5122 states and 16201 transitions. [2021-06-05 06:44:00,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 06:44:00,356 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 06:44:00,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:00,362 INFO L225 Difference]: With dead ends: 5122 [2021-06-05 06:44:00,362 INFO L226 Difference]: Without dead ends: 5096 [2021-06-05 06:44:00,362 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 389.4ms TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:44:00,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5096 states. [2021-06-05 06:44:00,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5096 to 3181. [2021-06-05 06:44:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3181 states, 3180 states have (on average 3.5276729559748428) internal successors, (11218), 3180 states have internal predecessors, (11218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:00,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3181 states to 3181 states and 11218 transitions. [2021-06-05 06:44:00,414 INFO L78 Accepts]: Start accepts. Automaton has 3181 states and 11218 transitions. Word has length 28 [2021-06-05 06:44:00,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:00,414 INFO L482 AbstractCegarLoop]: Abstraction has 3181 states and 11218 transitions. [2021-06-05 06:44:00,414 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 06:44:00,414 INFO L276 IsEmpty]: Start isEmpty. Operand 3181 states and 11218 transitions. [2021-06-05 06:44:00,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:00,418 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:00,418 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 06:44:00,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4024 [2021-06-05 06:44:00,618 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:00,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:00,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1694477061, now seen corresponding path program 64 times [2021-06-05 06:44:00,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:00,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929468790] [2021-06-05 06:44:00,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:00,649 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 06:44:00,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:00,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929468790] [2021-06-05 06:44:00,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929468790] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:00,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785647551] [2021-06-05 06:44:00,649 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 06:44:00,677 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:00,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:00,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:44:00,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:00,786 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 06:44:00,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785647551] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:00,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:00,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:44:00,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408168660] [2021-06-05 06:44:00,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:44:00,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:00,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:44:00,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:44:00,788 INFO L87 Difference]: Start difference. First operand 3181 states and 11218 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 06:44:01,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:01,420 INFO L93 Difference]: Finished difference Result 5123 states and 16231 transitions. [2021-06-05 06:44:01,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 06:44:01,420 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 06:44:01,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:01,427 INFO L225 Difference]: With dead ends: 5123 [2021-06-05 06:44:01,427 INFO L226 Difference]: Without dead ends: 5117 [2021-06-05 06:44:01,427 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 424.5ms TimeCoverageRelationStatistics Valid=624, Invalid=1728, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:44:01,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5117 states. [2021-06-05 06:44:01,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5117 to 3184. [2021-06-05 06:44:01,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3184 states, 3183 states have (on average 3.522148916116871) internal successors, (11211), 3183 states have internal predecessors, (11211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:01,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 11211 transitions. [2021-06-05 06:44:01,478 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 11211 transitions. Word has length 28 [2021-06-05 06:44:01,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:01,478 INFO L482 AbstractCegarLoop]: Abstraction has 3184 states and 11211 transitions. [2021-06-05 06:44:01,478 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 06:44:01,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 11211 transitions. [2021-06-05 06:44:01,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:01,482 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:01,482 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 06:44:01,696 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4025,129 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:01,697 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:01,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:01,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1551691313, now seen corresponding path program 65 times [2021-06-05 06:44:01,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:01,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721456754] [2021-06-05 06:44:01,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:01,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:01,727 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 06:44:01,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:01,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721456754] [2021-06-05 06:44:01,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721456754] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:01,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874365544] [2021-06-05 06:44:01,727 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 06:44:01,750 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:44:01,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:01,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:44:01,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:01,810 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 06:44:01,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874365544] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:01,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:01,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:44:01,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116719309] [2021-06-05 06:44:01,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:01,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:01,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:01,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:01,811 INFO L87 Difference]: Start difference. First operand 3184 states and 11211 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 06:44:02,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:02,306 INFO L93 Difference]: Finished difference Result 5875 states and 18946 transitions. [2021-06-05 06:44:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:44:02,306 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 06:44:02,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:02,314 INFO L225 Difference]: With dead ends: 5875 [2021-06-05 06:44:02,314 INFO L226 Difference]: Without dead ends: 5792 [2021-06-05 06:44:02,314 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 280.7ms TimeCoverageRelationStatistics Valid=455, Invalid=1267, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 06:44:02,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5792 states. [2021-06-05 06:44:02,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5792 to 3343. [2021-06-05 06:44:02,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3343 states, 3342 states have (on average 3.5556552962298027) internal successors, (11883), 3342 states have internal predecessors, (11883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:02,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3343 states to 3343 states and 11883 transitions. [2021-06-05 06:44:02,399 INFO L78 Accepts]: Start accepts. Automaton has 3343 states and 11883 transitions. Word has length 28 [2021-06-05 06:44:02,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:02,399 INFO L482 AbstractCegarLoop]: Abstraction has 3343 states and 11883 transitions. [2021-06-05 06:44:02,399 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 06:44:02,400 INFO L276 IsEmpty]: Start isEmpty. Operand 3343 states and 11883 transitions. [2021-06-05 06:44:02,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:02,404 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:02,404 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 06:44:02,604 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4026,130 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:02,604 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:02,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:02,605 INFO L82 PathProgramCache]: Analyzing trace with hash -659497231, now seen corresponding path program 66 times [2021-06-05 06:44:02,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:02,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665846181] [2021-06-05 06:44:02,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:02,631 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 06:44:02,631 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:02,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665846181] [2021-06-05 06:44:02,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665846181] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:02,632 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520107911] [2021-06-05 06:44:02,632 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 06:44:02,688 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:44:02,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:02,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:02,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:02,751 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 06:44:02,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520107911] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:02,751 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:02,751 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-06-05 06:44:02,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286015704] [2021-06-05 06:44:02,751 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:44:02,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:02,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:44:02,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:44:02,752 INFO L87 Difference]: Start difference. First operand 3343 states and 11883 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 06:44:02,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:02,914 INFO L93 Difference]: Finished difference Result 4624 states and 15329 transitions. [2021-06-05 06:44:02,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:44:02,914 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 06:44:02,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:02,921 INFO L225 Difference]: With dead ends: 4624 [2021-06-05 06:44:02,921 INFO L226 Difference]: Without dead ends: 4624 [2021-06-05 06:44:02,921 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 113.3ms TimeCoverageRelationStatistics Valid=132, Invalid=210, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:44:02,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4624 states. [2021-06-05 06:44:02,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4624 to 3098. [2021-06-05 06:44:02,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3098 states, 3097 states have (on average 3.5298676138198255) internal successors, (10932), 3097 states have internal predecessors, (10932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:02,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3098 states to 3098 states and 10932 transitions. [2021-06-05 06:44:02,979 INFO L78 Accepts]: Start accepts. Automaton has 3098 states and 10932 transitions. Word has length 28 [2021-06-05 06:44:02,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:02,980 INFO L482 AbstractCegarLoop]: Abstraction has 3098 states and 10932 transitions. [2021-06-05 06:44:02,980 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 06:44:02,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3098 states and 10932 transitions. [2021-06-05 06:44:02,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:02,984 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:02,984 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 06:44:03,184 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4027,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:03,184 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:03,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:03,184 INFO L82 PathProgramCache]: Analyzing trace with hash -2006178797, now seen corresponding path program 67 times [2021-06-05 06:44:03,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:03,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534086549] [2021-06-05 06:44:03,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:03,229 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 06:44:03,229 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:03,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534086549] [2021-06-05 06:44:03,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534086549] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:03,229 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256102913] [2021-06-05 06:44:03,229 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 06:44:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:03,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:03,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:03,318 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 06:44:03,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256102913] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:03,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:03,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:44:03,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990421532] [2021-06-05 06:44:03,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:03,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:03,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:03,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:03,319 INFO L87 Difference]: Start difference. First operand 3098 states and 10932 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 06:44:03,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:03,935 INFO L93 Difference]: Finished difference Result 6516 states and 20731 transitions. [2021-06-05 06:44:03,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 06:44:03,935 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 06:44:03,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:03,944 INFO L225 Difference]: With dead ends: 6516 [2021-06-05 06:44:03,944 INFO L226 Difference]: Without dead ends: 6516 [2021-06-05 06:44:03,945 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 349.4ms TimeCoverageRelationStatistics Valid=552, Invalid=1800, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:44:03,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6516 states. [2021-06-05 06:44:03,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6516 to 3116. [2021-06-05 06:44:04,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3116 states, 3115 states have (on average 3.5296950240770464) internal successors, (10995), 3115 states have internal predecessors, (10995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:04,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 10995 transitions. [2021-06-05 06:44:04,007 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 10995 transitions. Word has length 28 [2021-06-05 06:44:04,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:04,007 INFO L482 AbstractCegarLoop]: Abstraction has 3116 states and 10995 transitions. [2021-06-05 06:44:04,007 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 06:44:04,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 10995 transitions. [2021-06-05 06:44:04,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:04,012 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:04,012 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 06:44:04,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4028,132 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:04,212 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:04,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:04,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1221264703, now seen corresponding path program 68 times [2021-06-05 06:44:04,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:04,212 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893916180] [2021-06-05 06:44:04,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:04,243 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 06:44:04,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:04,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893916180] [2021-06-05 06:44:04,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893916180] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:04,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518356585] [2021-06-05 06:44:04,244 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 06:44:04,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:04,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:04,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:04,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:04,333 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 06:44:04,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518356585] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:04,333 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:04,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:44:04,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58775954] [2021-06-05 06:44:04,333 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:04,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:04,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:04,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:04,334 INFO L87 Difference]: Start difference. First operand 3116 states and 10995 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 06:44:05,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:05,008 INFO L93 Difference]: Finished difference Result 6771 states and 21511 transitions. [2021-06-05 06:44:05,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 06:44:05,009 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 06:44:05,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:05,019 INFO L225 Difference]: With dead ends: 6771 [2021-06-05 06:44:05,020 INFO L226 Difference]: Without dead ends: 6771 [2021-06-05 06:44:05,020 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1007 ImplicationChecksByTransitivity, 398.9ms TimeCoverageRelationStatistics Valid=634, Invalid=2336, Unknown=0, NotChecked=0, Total=2970 [2021-06-05 06:44:05,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2021-06-05 06:44:05,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 3210. [2021-06-05 06:44:05,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3210 states, 3209 states have (on average 3.5219694608912433) internal successors, (11302), 3209 states have internal predecessors, (11302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:05,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3210 states to 3210 states and 11302 transitions. [2021-06-05 06:44:05,087 INFO L78 Accepts]: Start accepts. Automaton has 3210 states and 11302 transitions. Word has length 28 [2021-06-05 06:44:05,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:05,087 INFO L482 AbstractCegarLoop]: Abstraction has 3210 states and 11302 transitions. [2021-06-05 06:44:05,087 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 06:44:05,087 INFO L276 IsEmpty]: Start isEmpty. Operand 3210 states and 11302 transitions. [2021-06-05 06:44:05,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:05,090 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:05,091 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 06:44:05,291 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4029 [2021-06-05 06:44:05,291 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:05,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:05,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1990679937, now seen corresponding path program 69 times [2021-06-05 06:44:05,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:05,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980320711] [2021-06-05 06:44:05,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:05,321 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 06:44:05,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:05,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980320711] [2021-06-05 06:44:05,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980320711] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:05,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620538592] [2021-06-05 06:44:05,321 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 06:44:05,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:44:05,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:05,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:44:05,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:05,427 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 06:44:05,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620538592] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:05,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:05,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:44:05,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542236142] [2021-06-05 06:44:05,428 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:05,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:05,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:05,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:05,428 INFO L87 Difference]: Start difference. First operand 3210 states and 11302 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 06:44:06,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:06,000 INFO L93 Difference]: Finished difference Result 6952 states and 22145 transitions. [2021-06-05 06:44:06,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:44:06,001 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 06:44:06,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:06,010 INFO L225 Difference]: With dead ends: 6952 [2021-06-05 06:44:06,010 INFO L226 Difference]: Without dead ends: 6916 [2021-06-05 06:44:06,010 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 328.1ms TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:44:06,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6916 states. [2021-06-05 06:44:06,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6916 to 3597. [2021-06-05 06:44:06,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 3596 states have (on average 3.5489432703003336) internal successors, (12762), 3596 states have internal predecessors, (12762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:06,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 12762 transitions. [2021-06-05 06:44:06,083 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 12762 transitions. Word has length 28 [2021-06-05 06:44:06,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:06,083 INFO L482 AbstractCegarLoop]: Abstraction has 3597 states and 12762 transitions. [2021-06-05 06:44:06,083 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 06:44:06,083 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 12762 transitions. [2021-06-05 06:44:06,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:06,087 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:06,087 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 06:44:06,288 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4030 [2021-06-05 06:44:06,288 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:06,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:06,288 INFO L82 PathProgramCache]: Analyzing trace with hash -833209241, now seen corresponding path program 70 times [2021-06-05 06:44:06,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:06,288 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932039707] [2021-06-05 06:44:06,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:06,331 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 06:44:06,331 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:06,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932039707] [2021-06-05 06:44:06,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932039707] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:06,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937672800] [2021-06-05 06:44:06,332 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 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 06:44:06,354 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:06,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:06,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:44:06,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:06,418 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 06:44:06,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937672800] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:06,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:06,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:44:06,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846198641] [2021-06-05 06:44:06,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:06,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:06,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:06,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:06,419 INFO L87 Difference]: Start difference. First operand 3597 states and 12762 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 06:44:06,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:06,970 INFO L93 Difference]: Finished difference Result 7145 states and 22690 transitions. [2021-06-05 06:44:06,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:44:06,970 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 06:44:06,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:06,981 INFO L225 Difference]: With dead ends: 7145 [2021-06-05 06:44:06,981 INFO L226 Difference]: Without dead ends: 7145 [2021-06-05 06:44:06,981 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 327.9ms TimeCoverageRelationStatistics Valid=543, Invalid=1527, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:44:06,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7145 states. [2021-06-05 06:44:07,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7145 to 3308. [2021-06-05 06:44:07,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3308 states, 3307 states have (on average 3.5119443604475356) internal successors, (11614), 3307 states have internal predecessors, (11614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:07,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3308 states to 3308 states and 11614 transitions. [2021-06-05 06:44:07,056 INFO L78 Accepts]: Start accepts. Automaton has 3308 states and 11614 transitions. Word has length 28 [2021-06-05 06:44:07,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:07,056 INFO L482 AbstractCegarLoop]: Abstraction has 3308 states and 11614 transitions. [2021-06-05 06:44:07,056 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 06:44:07,056 INFO L276 IsEmpty]: Start isEmpty. Operand 3308 states and 11614 transitions. [2021-06-05 06:44:07,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:07,060 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:07,060 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 06:44:07,260 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4031,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:07,260 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:07,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:07,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1266085845, now seen corresponding path program 71 times [2021-06-05 06:44:07,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:07,261 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749908062] [2021-06-05 06:44:07,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:07,292 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 06:44:07,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:07,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749908062] [2021-06-05 06:44:07,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749908062] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:07,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422068765] [2021-06-05 06:44:07,292 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 06:44:07,316 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:44:07,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:07,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:07,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:07,377 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 06:44:07,377 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422068765] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:07,377 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:07,377 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:44:07,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380089128] [2021-06-05 06:44:07,377 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:07,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:07,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:07,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:07,377 INFO L87 Difference]: Start difference. First operand 3308 states and 11614 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 06:44:07,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:07,985 INFO L93 Difference]: Finished difference Result 6241 states and 20184 transitions. [2021-06-05 06:44:07,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 06:44:07,986 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 06:44:07,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:07,994 INFO L225 Difference]: With dead ends: 6241 [2021-06-05 06:44:07,995 INFO L226 Difference]: Without dead ends: 6237 [2021-06-05 06:44:07,995 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 354.5ms TimeCoverageRelationStatistics Valid=600, Invalid=2052, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 06:44:08,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2021-06-05 06:44:08,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 3068. [2021-06-05 06:44:08,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3067 states have (on average 3.53635474404956) internal successors, (10846), 3067 states have internal predecessors, (10846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:08,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 10846 transitions. [2021-06-05 06:44:08,052 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 10846 transitions. Word has length 28 [2021-06-05 06:44:08,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:08,052 INFO L482 AbstractCegarLoop]: Abstraction has 3068 states and 10846 transitions. [2021-06-05 06:44:08,052 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 06:44:08,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 10846 transitions. [2021-06-05 06:44:08,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:08,056 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:08,056 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 06:44:08,256 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4032 [2021-06-05 06:44:08,256 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:08,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:08,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1538095035, now seen corresponding path program 72 times [2021-06-05 06:44:08,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:08,257 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349238070] [2021-06-05 06:44:08,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:08,287 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 06:44:08,287 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:08,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349238070] [2021-06-05 06:44:08,287 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349238070] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:08,287 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229995604] [2021-06-05 06:44:08,288 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 06:44:08,310 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:44:08,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:08,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:08,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:08,395 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 06:44:08,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229995604] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:08,395 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:08,395 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:44:08,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435384582] [2021-06-05 06:44:08,395 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:44:08,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:08,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:44:08,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:44:08,396 INFO L87 Difference]: Start difference. First operand 3068 states and 10846 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 06:44:09,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:09,341 INFO L93 Difference]: Finished difference Result 9481 states and 30975 transitions. [2021-06-05 06:44:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 06:44:09,342 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 06:44:09,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:09,356 INFO L225 Difference]: With dead ends: 9481 [2021-06-05 06:44:09,356 INFO L226 Difference]: Without dead ends: 9481 [2021-06-05 06:44:09,357 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1727 ImplicationChecksByTransitivity, 554.0ms TimeCoverageRelationStatistics Valid=968, Invalid=3588, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 06:44:09,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9481 states. [2021-06-05 06:44:09,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9481 to 3244. [2021-06-05 06:44:09,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3244 states, 3243 states have (on average 3.602836879432624) internal successors, (11684), 3243 states have internal predecessors, (11684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:09,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3244 states to 3244 states and 11684 transitions. [2021-06-05 06:44:09,444 INFO L78 Accepts]: Start accepts. Automaton has 3244 states and 11684 transitions. Word has length 28 [2021-06-05 06:44:09,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:09,444 INFO L482 AbstractCegarLoop]: Abstraction has 3244 states and 11684 transitions. [2021-06-05 06:44:09,444 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 06:44:09,444 INFO L276 IsEmpty]: Start isEmpty. Operand 3244 states and 11684 transitions. [2021-06-05 06:44:09,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:09,448 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:09,448 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 06:44:09,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4033 [2021-06-05 06:44:09,648 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:09,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:09,649 INFO L82 PathProgramCache]: Analyzing trace with hash -971142955, now seen corresponding path program 73 times [2021-06-05 06:44:09,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:09,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732863678] [2021-06-05 06:44:09,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:09,682 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 06:44:09,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:09,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732863678] [2021-06-05 06:44:09,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732863678] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:09,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544471869] [2021-06-05 06:44:09,682 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 06:44:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:09,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:09,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:09,788 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 06:44:09,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544471869] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:09,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:09,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:44:09,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954606414] [2021-06-05 06:44:09,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:44:09,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:09,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:44:09,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:44:09,788 INFO L87 Difference]: Start difference. First operand 3244 states and 11684 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 06:44:10,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:10,699 INFO L93 Difference]: Finished difference Result 9310 states and 30510 transitions. [2021-06-05 06:44:10,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 06:44:10,700 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 06:44:10,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:10,714 INFO L225 Difference]: With dead ends: 9310 [2021-06-05 06:44:10,714 INFO L226 Difference]: Without dead ends: 9310 [2021-06-05 06:44:10,714 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 537.8ms TimeCoverageRelationStatistics Valid=968, Invalid=3588, Unknown=0, NotChecked=0, Total=4556 [2021-06-05 06:44:10,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9310 states. [2021-06-05 06:44:10,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9310 to 3216. [2021-06-05 06:44:10,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3216 states, 3215 states have (on average 3.5878693623639193) internal successors, (11535), 3215 states have internal predecessors, (11535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:10,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3216 states to 3216 states and 11535 transitions. [2021-06-05 06:44:10,817 INFO L78 Accepts]: Start accepts. Automaton has 3216 states and 11535 transitions. Word has length 28 [2021-06-05 06:44:10,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:10,817 INFO L482 AbstractCegarLoop]: Abstraction has 3216 states and 11535 transitions. [2021-06-05 06:44:10,817 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 06:44:10,817 INFO L276 IsEmpty]: Start isEmpty. Operand 3216 states and 11535 transitions. [2021-06-05 06:44:10,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:10,821 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:10,821 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 06:44:11,021 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4034 [2021-06-05 06:44:11,021 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:11,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:11,021 INFO L82 PathProgramCache]: Analyzing trace with hash -2143488813, now seen corresponding path program 74 times [2021-06-05 06:44:11,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:11,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678774893] [2021-06-05 06:44:11,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:11,051 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 06:44:11,051 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:11,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678774893] [2021-06-05 06:44:11,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678774893] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:11,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141061197] [2021-06-05 06:44:11,051 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 06:44:11,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:11,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:11,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:11,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:11,146 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 06:44:11,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141061197] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:11,146 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:11,146 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:44:11,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451466197] [2021-06-05 06:44:11,146 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:11,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:11,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:11,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:11,146 INFO L87 Difference]: Start difference. First operand 3216 states and 11535 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 06:44:12,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:12,003 INFO L93 Difference]: Finished difference Result 8753 states and 27774 transitions. [2021-06-05 06:44:12,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 06:44:12,003 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 06:44:12,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:12,016 INFO L225 Difference]: With dead ends: 8753 [2021-06-05 06:44:12,016 INFO L226 Difference]: Without dead ends: 8753 [2021-06-05 06:44:12,017 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 450.5ms TimeCoverageRelationStatistics Valid=821, Invalid=3085, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 06:44:12,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8753 states. [2021-06-05 06:44:12,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8753 to 3236. [2021-06-05 06:44:12,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3236 states, 3235 states have (on average 3.591035548686244) internal successors, (11617), 3235 states have internal predecessors, (11617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:12,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3236 states to 3236 states and 11617 transitions. [2021-06-05 06:44:12,095 INFO L78 Accepts]: Start accepts. Automaton has 3236 states and 11617 transitions. Word has length 28 [2021-06-05 06:44:12,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:12,095 INFO L482 AbstractCegarLoop]: Abstraction has 3236 states and 11617 transitions. [2021-06-05 06:44:12,096 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 06:44:12,096 INFO L276 IsEmpty]: Start isEmpty. Operand 3236 states and 11617 transitions. [2021-06-05 06:44:12,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:12,099 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:12,099 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 06:44:12,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4035 [2021-06-05 06:44:12,300 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:12,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:12,300 INFO L82 PathProgramCache]: Analyzing trace with hash -2062112725, now seen corresponding path program 75 times [2021-06-05 06:44:12,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:12,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861148377] [2021-06-05 06:44:12,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:12,331 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 06:44:12,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:12,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861148377] [2021-06-05 06:44:12,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861148377] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:12,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925143632] [2021-06-05 06:44:12,332 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 06:44:12,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 06:44:12,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:12,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:12,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:12,424 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 06:44:12,424 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925143632] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:12,424 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:12,424 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:44:12,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906155794] [2021-06-05 06:44:12,424 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:12,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:12,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:12,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:12,425 INFO L87 Difference]: Start difference. First operand 3236 states and 11617 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 06:44:13,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:13,231 INFO L93 Difference]: Finished difference Result 8265 states and 26591 transitions. [2021-06-05 06:44:13,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 06:44:13,232 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 06:44:13,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:13,244 INFO L225 Difference]: With dead ends: 8265 [2021-06-05 06:44:13,244 INFO L226 Difference]: Without dead ends: 8257 [2021-06-05 06:44:13,244 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 433.7ms TimeCoverageRelationStatistics Valid=776, Invalid=2764, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:44:13,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8257 states. [2021-06-05 06:44:13,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8257 to 3218. [2021-06-05 06:44:13,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 3217 states have (on average 3.5871930369909855) internal successors, (11540), 3217 states have internal predecessors, (11540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:13,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 11540 transitions. [2021-06-05 06:44:13,327 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 11540 transitions. Word has length 28 [2021-06-05 06:44:13,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:13,327 INFO L482 AbstractCegarLoop]: Abstraction has 3218 states and 11540 transitions. [2021-06-05 06:44:13,327 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 06:44:13,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 11540 transitions. [2021-06-05 06:44:13,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:13,331 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:13,331 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 06:44:13,531 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4036,140 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:13,532 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:13,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:13,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1131455509, now seen corresponding path program 76 times [2021-06-05 06:44:13,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:13,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014841997] [2021-06-05 06:44:13,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:13,568 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 06:44:13,568 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:13,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014841997] [2021-06-05 06:44:13,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014841997] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:13,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448055984] [2021-06-05 06:44:13,569 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 06:44:13,598 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:13,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:13,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:13,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:13,712 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 06:44:13,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448055984] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:13,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:13,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:44:13,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206712328] [2021-06-05 06:44:13,713 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:44:13,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:13,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:44:13,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:44:13,713 INFO L87 Difference]: Start difference. First operand 3218 states and 11540 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 06:44:14,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:14,797 INFO L93 Difference]: Finished difference Result 8190 states and 26354 transitions. [2021-06-05 06:44:14,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-05 06:44:14,798 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 06:44:14,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:14,814 INFO L225 Difference]: With dead ends: 8190 [2021-06-05 06:44:14,814 INFO L226 Difference]: Without dead ends: 8190 [2021-06-05 06:44:14,814 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 608.8ms TimeCoverageRelationStatistics Valid=820, Invalid=2962, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:44:14,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8190 states. [2021-06-05 06:44:14,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8190 to 3234. [2021-06-05 06:44:14,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3234 states, 3233 states have (on average 3.589236003711723) internal successors, (11604), 3233 states have internal predecessors, (11604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:14,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 11604 transitions. [2021-06-05 06:44:14,919 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 11604 transitions. Word has length 28 [2021-06-05 06:44:14,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:14,919 INFO L482 AbstractCegarLoop]: Abstraction has 3234 states and 11604 transitions. [2021-06-05 06:44:14,919 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 06:44:14,919 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 11604 transitions. [2021-06-05 06:44:14,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:14,924 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:14,924 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 06:44:15,146 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4037,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:15,146 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:15,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:15,146 INFO L82 PathProgramCache]: Analyzing trace with hash 511583645, now seen corresponding path program 77 times [2021-06-05 06:44:15,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:15,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020616770] [2021-06-05 06:44:15,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:15,185 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 06:44:15,185 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:15,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020616770] [2021-06-05 06:44:15,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020616770] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:15,185 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060112145] [2021-06-05 06:44:15,185 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 06:44:15,214 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-05 06:44:15,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:15,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:15,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:15,354 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 06:44:15,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060112145] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:15,354 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:15,354 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:44:15,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830128910] [2021-06-05 06:44:15,354 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:44:15,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:15,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:44:15,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:44:15,355 INFO L87 Difference]: Start difference. First operand 3234 states and 11604 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 06:44:16,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:16,389 INFO L93 Difference]: Finished difference Result 7851 states and 25552 transitions. [2021-06-05 06:44:16,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 06:44:16,389 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 06:44:16,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:16,404 INFO L225 Difference]: With dead ends: 7851 [2021-06-05 06:44:16,405 INFO L226 Difference]: Without dead ends: 7843 [2021-06-05 06:44:16,405 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 620.9ms TimeCoverageRelationStatistics Valid=800, Invalid=2740, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:44:16,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7843 states. [2021-06-05 06:44:16,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7843 to 2991. [2021-06-05 06:44:16,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2991 states, 2990 states have (on average 3.5123745819397993) internal successors, (10502), 2990 states have internal predecessors, (10502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:16,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2991 states to 2991 states and 10502 transitions. [2021-06-05 06:44:16,502 INFO L78 Accepts]: Start accepts. Automaton has 2991 states and 10502 transitions. Word has length 28 [2021-06-05 06:44:16,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:16,502 INFO L482 AbstractCegarLoop]: Abstraction has 2991 states and 10502 transitions. [2021-06-05 06:44:16,502 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 06:44:16,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2991 states and 10502 transitions. [2021-06-05 06:44:16,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:16,508 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:16,508 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 06:44:16,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4038,142 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:16,721 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:16,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:16,721 INFO L82 PathProgramCache]: Analyzing trace with hash 594987225, now seen corresponding path program 78 times [2021-06-05 06:44:16,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:16,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180849035] [2021-06-05 06:44:16,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:16,762 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 06:44:16,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:16,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180849035] [2021-06-05 06:44:16,762 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180849035] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:16,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126276380] [2021-06-05 06:44:16,762 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 06:44:16,792 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 06:44:16,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:16,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:16,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:16,908 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 06:44:16,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126276380] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:16,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:16,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:44:16,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718471739] [2021-06-05 06:44:16,909 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:44:16,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:16,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:44:16,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:44:16,909 INFO L87 Difference]: Start difference. First operand 2991 states and 10502 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 06:44:17,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:17,820 INFO L93 Difference]: Finished difference Result 6061 states and 19474 transitions. [2021-06-05 06:44:17,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 06:44:17,821 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 06:44:17,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:17,829 INFO L225 Difference]: With dead ends: 6061 [2021-06-05 06:44:17,829 INFO L226 Difference]: Without dead ends: 6061 [2021-06-05 06:44:17,829 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1183 ImplicationChecksByTransitivity, 570.0ms TimeCoverageRelationStatistics Valid=709, Invalid=2713, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 06:44:17,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6061 states. [2021-06-05 06:44:17,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6061 to 3003. [2021-06-05 06:44:17,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3003 states, 3002 states have (on average 3.5109926715522985) internal successors, (10540), 3002 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 10540 transitions. [2021-06-05 06:44:17,882 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 10540 transitions. Word has length 28 [2021-06-05 06:44:17,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:17,882 INFO L482 AbstractCegarLoop]: Abstraction has 3003 states and 10540 transitions. [2021-06-05 06:44:17,882 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 06:44:17,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 10540 transitions. [2021-06-05 06:44:17,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:17,885 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:17,885 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 06:44:18,086 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4039 [2021-06-05 06:44:18,087 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:18,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:18,087 INFO L82 PathProgramCache]: Analyzing trace with hash -2046619895, now seen corresponding path program 79 times [2021-06-05 06:44:18,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:18,087 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741868298] [2021-06-05 06:44:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:18,145 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 06:44:18,145 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:18,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741868298] [2021-06-05 06:44:18,145 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741868298] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:18,145 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962699094] [2021-06-05 06:44:18,145 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 06:44:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:18,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:18,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:18,301 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 06:44:18,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962699094] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:18,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:18,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:44:18,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486350106] [2021-06-05 06:44:18,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:18,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:18,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:18,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:18,302 INFO L87 Difference]: Start difference. First operand 3003 states and 10540 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 06:44:19,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:19,308 INFO L93 Difference]: Finished difference Result 6857 states and 21507 transitions. [2021-06-05 06:44:19,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 06:44:19,308 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 06:44:19,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:19,318 INFO L225 Difference]: With dead ends: 6857 [2021-06-05 06:44:19,318 INFO L226 Difference]: Without dead ends: 6857 [2021-06-05 06:44:19,319 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 652.8ms TimeCoverageRelationStatistics Valid=1012, Invalid=4244, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 06:44:19,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6857 states. [2021-06-05 06:44:19,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6857 to 3069. [2021-06-05 06:44:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3069 states, 3068 states have (on average 3.50619295958279) internal successors, (10757), 3068 states have internal predecessors, (10757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:19,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 10757 transitions. [2021-06-05 06:44:19,388 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 10757 transitions. Word has length 28 [2021-06-05 06:44:19,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:19,388 INFO L482 AbstractCegarLoop]: Abstraction has 3069 states and 10757 transitions. [2021-06-05 06:44:19,388 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 06:44:19,388 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 10757 transitions. [2021-06-05 06:44:19,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:19,392 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:19,392 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 06:44:19,593 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4040,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:19,593 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:19,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:19,593 INFO L82 PathProgramCache]: Analyzing trace with hash -403580741, now seen corresponding path program 80 times [2021-06-05 06:44:19,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:19,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127364034] [2021-06-05 06:44:19,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:19,628 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 06:44:19,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:19,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127364034] [2021-06-05 06:44:19,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127364034] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:19,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024675414] [2021-06-05 06:44:19,628 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 06:44:19,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:19,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:19,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:19,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:19,739 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 06:44:19,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024675414] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:19,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:19,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:44:19,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755555030] [2021-06-05 06:44:19,739 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:19,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:19,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:19,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:19,740 INFO L87 Difference]: Start difference. First operand 3069 states and 10757 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 06:44:20,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:20,662 INFO L93 Difference]: Finished difference Result 6397 states and 20307 transitions. [2021-06-05 06:44:20,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 06:44:20,663 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 06:44:20,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:20,672 INFO L225 Difference]: With dead ends: 6397 [2021-06-05 06:44:20,673 INFO L226 Difference]: Without dead ends: 6393 [2021-06-05 06:44:20,673 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1539 ImplicationChecksByTransitivity, 550.5ms TimeCoverageRelationStatistics Valid=914, Invalid=3508, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:44:20,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6393 states. [2021-06-05 06:44:20,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6393 to 2995. [2021-06-05 06:44:20,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2995 states, 2994 states have (on average 3.502672010688043) internal successors, (10487), 2994 states have internal predecessors, (10487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:20,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 10487 transitions. [2021-06-05 06:44:20,733 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 10487 transitions. Word has length 28 [2021-06-05 06:44:20,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:20,733 INFO L482 AbstractCegarLoop]: Abstraction has 2995 states and 10487 transitions. [2021-06-05 06:44:20,733 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 06:44:20,733 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 10487 transitions. [2021-06-05 06:44:20,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:20,736 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:20,737 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 06:44:20,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4041 [2021-06-05 06:44:20,937 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:20,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:20,937 INFO L82 PathProgramCache]: Analyzing trace with hash 175862483, now seen corresponding path program 65 times [2021-06-05 06:44:20,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:20,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960184372] [2021-06-05 06:44:20,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:20,975 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 06:44:20,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:20,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960184372] [2021-06-05 06:44:20,975 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960184372] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:20,975 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896080875] [2021-06-05 06:44:20,975 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 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 06:44:20,998 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:44:20,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:20,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:20,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:21,066 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 06:44:21,066 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896080875] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:21,066 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:21,066 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:44:21,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449711837] [2021-06-05 06:44:21,066 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:21,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:21,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:21,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:21,067 INFO L87 Difference]: Start difference. First operand 2995 states and 10487 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 06:44:21,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:21,575 INFO L93 Difference]: Finished difference Result 5524 states and 17848 transitions. [2021-06-05 06:44:21,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:44:21,576 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 06:44:21,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:21,584 INFO L225 Difference]: With dead ends: 5524 [2021-06-05 06:44:21,584 INFO L226 Difference]: Without dead ends: 5524 [2021-06-05 06:44:21,584 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 297.3ms TimeCoverageRelationStatistics Valid=407, Invalid=1399, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:44:21,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5524 states. [2021-06-05 06:44:21,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5524 to 2995. [2021-06-05 06:44:21,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2995 states, 2994 states have (on average 3.5046760187040746) internal successors, (10493), 2994 states have internal predecessors, (10493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 10493 transitions. [2021-06-05 06:44:21,632 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 10493 transitions. Word has length 28 [2021-06-05 06:44:21,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:21,632 INFO L482 AbstractCegarLoop]: Abstraction has 2995 states and 10493 transitions. [2021-06-05 06:44:21,632 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 06:44:21,632 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 10493 transitions. [2021-06-05 06:44:21,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:21,636 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:21,636 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 06:44:21,836 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 146 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4042 [2021-06-05 06:44:21,836 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:21,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:21,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1435937279, now seen corresponding path program 66 times [2021-06-05 06:44:21,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:21,837 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177397892] [2021-06-05 06:44:21,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:21,873 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 06:44:21,873 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:21,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177397892] [2021-06-05 06:44:21,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177397892] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:21,873 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413242142] [2021-06-05 06:44:21,873 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 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 06:44:21,897 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:44:21,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:21,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:21,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:21,966 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 06:44:21,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413242142] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:21,966 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:21,966 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:44:21,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030576508] [2021-06-05 06:44:21,967 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:21,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:21,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:21,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:21,967 INFO L87 Difference]: Start difference. First operand 2995 states and 10493 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 06:44:22,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:22,676 INFO L93 Difference]: Finished difference Result 5876 states and 18839 transitions. [2021-06-05 06:44:22,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 06:44:22,676 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 06:44:22,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:22,684 INFO L225 Difference]: With dead ends: 5876 [2021-06-05 06:44:22,684 INFO L226 Difference]: Without dead ends: 5876 [2021-06-05 06:44:22,684 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 397.4ms TimeCoverageRelationStatistics Valid=638, Invalid=2118, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 06:44:22,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5876 states. [2021-06-05 06:44:22,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5876 to 2986. [2021-06-05 06:44:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2986 states, 2985 states have (on average 3.504857621440536) internal successors, (10462), 2985 states have internal predecessors, (10462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:22,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2986 states to 2986 states and 10462 transitions. [2021-06-05 06:44:22,738 INFO L78 Accepts]: Start accepts. Automaton has 2986 states and 10462 transitions. Word has length 28 [2021-06-05 06:44:22,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:22,738 INFO L482 AbstractCegarLoop]: Abstraction has 2986 states and 10462 transitions. [2021-06-05 06:44:22,738 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 06:44:22,738 INFO L276 IsEmpty]: Start isEmpty. Operand 2986 states and 10462 transitions. [2021-06-05 06:44:22,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:22,742 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:22,742 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 06:44:22,942 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4043 [2021-06-05 06:44:22,942 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:22,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:22,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1667476927, now seen corresponding path program 67 times [2021-06-05 06:44:22,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:22,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627439479] [2021-06-05 06:44:22,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:22,979 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 06:44:22,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:22,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627439479] [2021-06-05 06:44:22,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627439479] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:22,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371604147] [2021-06-05 06:44:22,979 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 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 06:44:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:23,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:23,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:23,070 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 06:44:23,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371604147] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:23,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:23,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:44:23,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163617674] [2021-06-05 06:44:23,070 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:23,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:23,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:23,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:23,070 INFO L87 Difference]: Start difference. First operand 2986 states and 10462 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 06:44:23,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:23,817 INFO L93 Difference]: Finished difference Result 6350 states and 20120 transitions. [2021-06-05 06:44:23,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-06-05 06:44:23,817 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 06:44:23,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:23,826 INFO L225 Difference]: With dead ends: 6350 [2021-06-05 06:44:23,826 INFO L226 Difference]: Without dead ends: 6350 [2021-06-05 06:44:23,827 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 451.5ms TimeCoverageRelationStatistics Valid=777, Invalid=3005, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:44:23,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6350 states. [2021-06-05 06:44:23,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6350 to 3046. [2021-06-05 06:44:23,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3046 states, 3045 states have (on average 3.5008210180623975) internal successors, (10660), 3045 states have internal predecessors, (10660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 10660 transitions. [2021-06-05 06:44:23,884 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 10660 transitions. Word has length 28 [2021-06-05 06:44:23,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:23,884 INFO L482 AbstractCegarLoop]: Abstraction has 3046 states and 10660 transitions. [2021-06-05 06:44:23,884 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 06:44:23,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 10660 transitions. [2021-06-05 06:44:23,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:23,887 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:23,887 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 06:44:24,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4044 [2021-06-05 06:44:24,088 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:24,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:24,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1647761113, now seen corresponding path program 68 times [2021-06-05 06:44:24,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:24,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891906390] [2021-06-05 06:44:24,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:24,134 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 06:44:24,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:24,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891906390] [2021-06-05 06:44:24,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891906390] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:24,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356269658] [2021-06-05 06:44:24,135 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 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 06:44:24,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:24,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:24,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:24,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:24,244 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 06:44:24,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356269658] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:24,244 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:24,244 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-06-05 06:44:24,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310667204] [2021-06-05 06:44:24,244 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:24,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:24,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:24,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:24,245 INFO L87 Difference]: Start difference. First operand 3046 states and 10660 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 06:44:24,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:24,742 INFO L93 Difference]: Finished difference Result 7170 states and 24220 transitions. [2021-06-05 06:44:24,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:44:24,743 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 06:44:24,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:24,754 INFO L225 Difference]: With dead ends: 7170 [2021-06-05 06:44:24,754 INFO L226 Difference]: Without dead ends: 7170 [2021-06-05 06:44:24,755 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 345.9ms TimeCoverageRelationStatistics Valid=536, Invalid=1270, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:44:24,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7170 states. [2021-06-05 06:44:24,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7170 to 4145. [2021-06-05 06:44:24,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4145 states, 4144 states have (on average 3.618484555984556) internal successors, (14995), 4144 states have internal predecessors, (14995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4145 states to 4145 states and 14995 transitions. [2021-06-05 06:44:24,832 INFO L78 Accepts]: Start accepts. Automaton has 4145 states and 14995 transitions. Word has length 28 [2021-06-05 06:44:24,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:24,832 INFO L482 AbstractCegarLoop]: Abstraction has 4145 states and 14995 transitions. [2021-06-05 06:44:24,832 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 06:44:24,832 INFO L276 IsEmpty]: Start isEmpty. Operand 4145 states and 14995 transitions. [2021-06-05 06:44:24,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:24,837 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:24,837 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 06:44:25,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4045 [2021-06-05 06:44:25,038 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:25,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:25,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1712298069, now seen corresponding path program 69 times [2021-06-05 06:44:25,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:25,038 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432663792] [2021-06-05 06:44:25,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:25,086 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 06:44:25,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:25,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432663792] [2021-06-05 06:44:25,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432663792] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:25,086 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196628151] [2021-06-05 06:44:25,087 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 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 06:44:25,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 06:44:25,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:25,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:25,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:25,179 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 06:44:25,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196628151] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:25,179 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:25,179 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:44:25,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262527458] [2021-06-05 06:44:25,179 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:25,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:25,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:25,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:25,180 INFO L87 Difference]: Start difference. First operand 4145 states and 14995 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 06:44:25,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:25,903 INFO L93 Difference]: Finished difference Result 7513 states and 25430 transitions. [2021-06-05 06:44:25,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 06:44:25,903 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 06:44:25,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:25,915 INFO L225 Difference]: With dead ends: 7513 [2021-06-05 06:44:25,915 INFO L226 Difference]: Without dead ends: 7509 [2021-06-05 06:44:25,915 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 414.6ms TimeCoverageRelationStatistics Valid=697, Invalid=2495, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 06:44:25,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7509 states. [2021-06-05 06:44:25,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7509 to 4037. [2021-06-05 06:44:25,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4037 states, 4036 states have (on average 3.627601585728444) internal successors, (14641), 4036 states have internal predecessors, (14641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:25,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4037 states to 4037 states and 14641 transitions. [2021-06-05 06:44:25,993 INFO L78 Accepts]: Start accepts. Automaton has 4037 states and 14641 transitions. Word has length 28 [2021-06-05 06:44:25,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:25,993 INFO L482 AbstractCegarLoop]: Abstraction has 4037 states and 14641 transitions. [2021-06-05 06:44:25,993 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 06:44:25,993 INFO L276 IsEmpty]: Start isEmpty. Operand 4037 states and 14641 transitions. [2021-06-05 06:44:25,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:25,998 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:25,998 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 06:44:26,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4046 [2021-06-05 06:44:26,198 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:26,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:26,199 INFO L82 PathProgramCache]: Analyzing trace with hash 307959399, now seen corresponding path program 81 times [2021-06-05 06:44:26,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:26,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633289839] [2021-06-05 06:44:26,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:26,224 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 06:44:26,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:26,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633289839] [2021-06-05 06:44:26,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633289839] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:26,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805809720] [2021-06-05 06:44:26,224 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 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 06:44:26,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:44:26,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:26,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:44:26,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:26,350 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 06:44:26,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805809720] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:26,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:26,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 06:44:26,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186107100] [2021-06-05 06:44:26,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:26,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:26,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:26,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:26,351 INFO L87 Difference]: Start difference. First operand 4037 states and 14641 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 06:44:27,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:27,103 INFO L93 Difference]: Finished difference Result 8340 states and 27997 transitions. [2021-06-05 06:44:27,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:44:27,103 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 06:44:27,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:27,115 INFO L225 Difference]: With dead ends: 8340 [2021-06-05 06:44:27,115 INFO L226 Difference]: Without dead ends: 8331 [2021-06-05 06:44:27,115 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 449.7ms TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:44:27,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8331 states. [2021-06-05 06:44:27,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8331 to 4477. [2021-06-05 06:44:27,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4477 states, 4476 states have (on average 3.7155942806076854) internal successors, (16631), 4476 states have internal predecessors, (16631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:27,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4477 states to 4477 states and 16631 transitions. [2021-06-05 06:44:27,204 INFO L78 Accepts]: Start accepts. Automaton has 4477 states and 16631 transitions. Word has length 28 [2021-06-05 06:44:27,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:27,204 INFO L482 AbstractCegarLoop]: Abstraction has 4477 states and 16631 transitions. [2021-06-05 06:44:27,204 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 06:44:27,204 INFO L276 IsEmpty]: Start isEmpty. Operand 4477 states and 16631 transitions. [2021-06-05 06:44:27,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:27,210 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:27,210 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, 1, 1] [2021-06-05 06:44:27,410 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4047,151 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:27,410 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:27,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:27,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1945666497, now seen corresponding path program 82 times [2021-06-05 06:44:27,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:27,411 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928048660] [2021-06-05 06:44:27,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:27,436 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 06:44:27,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:27,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928048660] [2021-06-05 06:44:27,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928048660] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:27,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124065671] [2021-06-05 06:44:27,436 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 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 06:44:27,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:27,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:27,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:44:27,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:27,534 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 06:44:27,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124065671] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:27,534 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:27,534 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 06:44:27,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993294102] [2021-06-05 06:44:27,534 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:27,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:27,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:27,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:27,534 INFO L87 Difference]: Start difference. First operand 4477 states and 16631 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 06:44:28,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:28,230 INFO L93 Difference]: Finished difference Result 8630 states and 28901 transitions. [2021-06-05 06:44:28,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:44:28,231 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 06:44:28,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:28,272 INFO L225 Difference]: With dead ends: 8630 [2021-06-05 06:44:28,272 INFO L226 Difference]: Without dead ends: 8630 [2021-06-05 06:44:28,272 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 426.8ms TimeCoverageRelationStatistics Valid=674, Invalid=1876, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:44:28,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8630 states. [2021-06-05 06:44:28,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8630 to 4491. [2021-06-05 06:44:28,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4491 states, 4490 states have (on average 3.7028953229398662) internal successors, (16626), 4490 states have internal predecessors, (16626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:28,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 16626 transitions. [2021-06-05 06:44:28,353 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 16626 transitions. Word has length 28 [2021-06-05 06:44:28,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:28,353 INFO L482 AbstractCegarLoop]: Abstraction has 4491 states and 16626 transitions. [2021-06-05 06:44:28,353 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 06:44:28,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 16626 transitions. [2021-06-05 06:44:28,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:28,359 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:28,359 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 06:44:28,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4048,152 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:28,560 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:28,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:28,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1145894509, now seen corresponding path program 83 times [2021-06-05 06:44:28,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:28,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713293903] [2021-06-05 06:44:28,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:28,589 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 06:44:28,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:28,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713293903] [2021-06-05 06:44:28,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713293903] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:28,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780180051] [2021-06-05 06:44:28,590 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 06:44:28,612 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:44:28,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:28,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:44:28,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:28,666 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 06:44:28,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780180051] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:28,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:28,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:44:28,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83224066] [2021-06-05 06:44:28,667 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:44:28,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:28,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:44:28,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:44:28,667 INFO L87 Difference]: Start difference. First operand 4491 states and 16626 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 06:44:29,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:29,040 INFO L93 Difference]: Finished difference Result 8035 states and 28348 transitions. [2021-06-05 06:44:29,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:44:29,040 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 06:44:29,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:29,052 INFO L225 Difference]: With dead ends: 8035 [2021-06-05 06:44:29,052 INFO L226 Difference]: Without dead ends: 7938 [2021-06-05 06:44:29,053 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 206.5ms TimeCoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:44:29,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7938 states. [2021-06-05 06:44:29,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7938 to 5963. [2021-06-05 06:44:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5963 states, 5962 states have (on average 3.763837638376384) internal successors, (22440), 5962 states have internal predecessors, (22440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:29,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5963 states to 5963 states and 22440 transitions. [2021-06-05 06:44:29,153 INFO L78 Accepts]: Start accepts. Automaton has 5963 states and 22440 transitions. Word has length 28 [2021-06-05 06:44:29,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:29,153 INFO L482 AbstractCegarLoop]: Abstraction has 5963 states and 22440 transitions. [2021-06-05 06:44:29,153 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 06:44:29,153 INFO L276 IsEmpty]: Start isEmpty. Operand 5963 states and 22440 transitions. [2021-06-05 06:44:29,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:29,161 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:29,161 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 06:44:29,362 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4049,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:29,362 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:29,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:29,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1941057807, now seen corresponding path program 84 times [2021-06-05 06:44:29,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:29,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701472480] [2021-06-05 06:44:29,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:29,389 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 06:44:29,390 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:29,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701472480] [2021-06-05 06:44:29,390 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701472480] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:29,390 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714014303] [2021-06-05 06:44:29,390 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 06:44:29,412 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:44:29,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:29,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:44:29,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:29,460 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 06:44:29,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714014303] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:29,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:29,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-06-05 06:44:29,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110614575] [2021-06-05 06:44:29,460 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:44:29,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:29,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:44:29,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:44:29,460 INFO L87 Difference]: Start difference. First operand 5963 states and 22440 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 06:44:29,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:29,620 INFO L93 Difference]: Finished difference Result 8287 states and 29195 transitions. [2021-06-05 06:44:29,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:44:29,621 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 06:44:29,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:29,633 INFO L225 Difference]: With dead ends: 8287 [2021-06-05 06:44:29,633 INFO L226 Difference]: Without dead ends: 8287 [2021-06-05 06:44:29,634 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 101.2ms TimeCoverageRelationStatistics Valid=143, Invalid=237, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:44:29,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8287 states. [2021-06-05 06:44:29,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8287 to 6088. [2021-06-05 06:44:29,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6088 states, 6087 states have (on average 3.741416132741909) internal successors, (22774), 6087 states have internal predecessors, (22774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:29,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6088 states to 6088 states and 22774 transitions. [2021-06-05 06:44:29,735 INFO L78 Accepts]: Start accepts. Automaton has 6088 states and 22774 transitions. Word has length 28 [2021-06-05 06:44:29,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:29,735 INFO L482 AbstractCegarLoop]: Abstraction has 6088 states and 22774 transitions. [2021-06-05 06:44:29,735 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 06:44:29,735 INFO L276 IsEmpty]: Start isEmpty. Operand 6088 states and 22774 transitions. [2021-06-05 06:44:29,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:29,743 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:29,743 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 06:44:29,943 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4050,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:29,943 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:29,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:29,944 INFO L82 PathProgramCache]: Analyzing trace with hash -1010858063, now seen corresponding path program 85 times [2021-06-05 06:44:29,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:29,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824773672] [2021-06-05 06:44:29,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:30,019 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 06:44:30,019 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:30,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824773672] [2021-06-05 06:44:30,019 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824773672] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:30,019 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331319905] [2021-06-05 06:44:30,019 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 06:44:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:30,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:30,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:30,099 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 06:44:30,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331319905] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:30,099 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:30,099 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 06:44:30,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750579641] [2021-06-05 06:44:30,099 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:30,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:30,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:30,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:30,099 INFO L87 Difference]: Start difference. First operand 6088 states and 22774 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 06:44:30,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:30,754 INFO L93 Difference]: Finished difference Result 12628 states and 43945 transitions. [2021-06-05 06:44:30,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-06-05 06:44:30,755 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 06:44:30,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:30,776 INFO L225 Difference]: With dead ends: 12628 [2021-06-05 06:44:30,777 INFO L226 Difference]: Without dead ends: 12628 [2021-06-05 06:44:30,777 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 420.5ms TimeCoverageRelationStatistics Valid=657, Invalid=2205, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 06:44:30,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12628 states. [2021-06-05 06:44:30,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12628 to 6761. [2021-06-05 06:44:30,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6761 states, 6760 states have (on average 3.7547337278106507) internal successors, (25382), 6760 states have internal predecessors, (25382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:30,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6761 states to 6761 states and 25382 transitions. [2021-06-05 06:44:30,923 INFO L78 Accepts]: Start accepts. Automaton has 6761 states and 25382 transitions. Word has length 28 [2021-06-05 06:44:30,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:30,923 INFO L482 AbstractCegarLoop]: Abstraction has 6761 states and 25382 transitions. [2021-06-05 06:44:30,923 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 06:44:30,924 INFO L276 IsEmpty]: Start isEmpty. Operand 6761 states and 25382 transitions. [2021-06-05 06:44:30,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:30,933 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:30,933 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 06:44:31,133 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4051 [2021-06-05 06:44:31,133 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:31,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:31,134 INFO L82 PathProgramCache]: Analyzing trace with hash 891821389, now seen corresponding path program 86 times [2021-06-05 06:44:31,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:31,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600319592] [2021-06-05 06:44:31,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:31,164 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 06:44:31,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:31,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600319592] [2021-06-05 06:44:31,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600319592] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:31,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181396874] [2021-06-05 06:44:31,164 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 06:44:31,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:31,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:31,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:31,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:31,262 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 06:44:31,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181396874] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:31,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:31,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-05 06:44:31,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344674133] [2021-06-05 06:44:31,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:44:31,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:31,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:44:31,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:44:31,263 INFO L87 Difference]: Start difference. First operand 6761 states and 25382 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 06:44:31,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:31,886 INFO L93 Difference]: Finished difference Result 12791 states and 44537 transitions. [2021-06-05 06:44:31,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 06:44:31,886 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 06:44:31,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:31,908 INFO L225 Difference]: With dead ends: 12791 [2021-06-05 06:44:31,908 INFO L226 Difference]: Without dead ends: 12791 [2021-06-05 06:44:31,908 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 370.9ms TimeCoverageRelationStatistics Valid=542, Invalid=1908, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:44:31,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12791 states. [2021-06-05 06:44:32,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12791 to 6999. [2021-06-05 06:44:32,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6999 states, 6998 states have (on average 3.734352672192055) internal successors, (26133), 6998 states have internal predecessors, (26133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:32,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6999 states to 6999 states and 26133 transitions. [2021-06-05 06:44:32,059 INFO L78 Accepts]: Start accepts. Automaton has 6999 states and 26133 transitions. Word has length 28 [2021-06-05 06:44:32,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:32,060 INFO L482 AbstractCegarLoop]: Abstraction has 6999 states and 26133 transitions. [2021-06-05 06:44:32,060 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 06:44:32,060 INFO L276 IsEmpty]: Start isEmpty. Operand 6999 states and 26133 transitions. [2021-06-05 06:44:32,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:32,069 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:32,069 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 06:44:32,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4052,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:32,270 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:32,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:32,270 INFO L82 PathProgramCache]: Analyzing trace with hash -191201267, now seen corresponding path program 87 times [2021-06-05 06:44:32,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:32,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53751020] [2021-06-05 06:44:32,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:32,294 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 06:44:32,294 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:32,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53751020] [2021-06-05 06:44:32,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53751020] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:32,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290184124] [2021-06-05 06:44:32,294 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 06:44:32,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:44:32,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:32,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-05 06:44:32,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:32,406 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 06:44:32,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290184124] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:32,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:32,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-06-05 06:44:32,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816861056] [2021-06-05 06:44:32,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:44:32,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:32,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:44:32,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:44:32,407 INFO L87 Difference]: Start difference. First operand 6999 states and 26133 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 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 06:44:33,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:33,092 INFO L93 Difference]: Finished difference Result 9904 states and 35142 transitions. [2021-06-05 06:44:33,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-05 06:44:33,092 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 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 06:44:33,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:33,109 INFO L225 Difference]: With dead ends: 9904 [2021-06-05 06:44:33,109 INFO L226 Difference]: Without dead ends: 9816 [2021-06-05 06:44:33,109 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 438.4ms TimeCoverageRelationStatistics Valid=534, Invalid=1916, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:44:33,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9816 states. [2021-06-05 06:44:33,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9816 to 7496. [2021-06-05 06:44:33,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7496 states, 7495 states have (on average 3.741160773849233) internal successors, (28040), 7495 states have internal predecessors, (28040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:33,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 28040 transitions. [2021-06-05 06:44:33,301 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 28040 transitions. Word has length 28 [2021-06-05 06:44:33,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:33,301 INFO L482 AbstractCegarLoop]: Abstraction has 7496 states and 28040 transitions. [2021-06-05 06:44:33,301 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 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 06:44:33,301 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 28040 transitions. [2021-06-05 06:44:33,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:33,312 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:33,313 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 06:44:33,513 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4053 [2021-06-05 06:44:33,513 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:33,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:33,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1279876851, now seen corresponding path program 88 times [2021-06-05 06:44:33,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:33,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549244094] [2021-06-05 06:44:33,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:33,540 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 06:44:33,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:33,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549244094] [2021-06-05 06:44:33,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549244094] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:33,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351244003] [2021-06-05 06:44:33,541 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 06:44:33,563 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:33,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:33,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:44:33,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:33,624 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 06:44:33,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351244003] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:33,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:33,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:44:33,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446116773] [2021-06-05 06:44:33,625 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:44:33,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:33,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:44:33,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:44:33,625 INFO L87 Difference]: Start difference. First operand 7496 states and 28040 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 06:44:33,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:33,962 INFO L93 Difference]: Finished difference Result 11192 states and 39947 transitions. [2021-06-05 06:44:33,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-05 06:44:33,962 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 06:44:33,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:33,983 INFO L225 Difference]: With dead ends: 11192 [2021-06-05 06:44:33,983 INFO L226 Difference]: Without dead ends: 11192 [2021-06-05 06:44:33,983 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 183.1ms TimeCoverageRelationStatistics Valid=230, Invalid=582, Unknown=0, NotChecked=0, Total=812 [2021-06-05 06:44:33,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11192 states. [2021-06-05 06:44:34,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11192 to 8528. [2021-06-05 06:44:34,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8528 states, 8527 states have (on average 3.7686173331769672) internal successors, (32135), 8527 states have internal predecessors, (32135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:34,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8528 states to 8528 states and 32135 transitions. [2021-06-05 06:44:34,148 INFO L78 Accepts]: Start accepts. Automaton has 8528 states and 32135 transitions. Word has length 28 [2021-06-05 06:44:34,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:34,148 INFO L482 AbstractCegarLoop]: Abstraction has 8528 states and 32135 transitions. [2021-06-05 06:44:34,148 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 06:44:34,148 INFO L276 IsEmpty]: Start isEmpty. Operand 8528 states and 32135 transitions. [2021-06-05 06:44:34,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:34,160 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:34,160 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 06:44:34,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4054 [2021-06-05 06:44:34,360 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:34,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:34,360 INFO L82 PathProgramCache]: Analyzing trace with hash 847000247, now seen corresponding path program 89 times [2021-06-05 06:44:34,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:34,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496755263] [2021-06-05 06:44:34,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:34,391 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 06:44:34,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:34,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496755263] [2021-06-05 06:44:34,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496755263] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:34,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387149875] [2021-06-05 06:44:34,391 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 06:44:34,414 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:44:34,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:34,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:34,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:34,465 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 06:44:34,466 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387149875] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:34,466 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:34,466 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-06-05 06:44:34,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818729555] [2021-06-05 06:44:34,466 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:44:34,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:34,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:44:34,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:44:34,466 INFO L87 Difference]: Start difference. First operand 8528 states and 32135 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 06:44:35,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:35,022 INFO L93 Difference]: Finished difference Result 14252 states and 50831 transitions. [2021-06-05 06:44:35,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:44:35,022 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 06:44:35,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:35,048 INFO L225 Difference]: With dead ends: 14252 [2021-06-05 06:44:35,048 INFO L226 Difference]: Without dead ends: 14248 [2021-06-05 06:44:35,048 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 660 ImplicationChecksByTransitivity, 294.4ms TimeCoverageRelationStatistics Valid=474, Invalid=1596, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:44:35,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14248 states. [2021-06-05 06:44:35,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14248 to 8428. [2021-06-05 06:44:35,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8428 states, 8427 states have (on average 3.77251690993236) internal successors, (31791), 8427 states have internal predecessors, (31791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:35,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8428 states to 8428 states and 31791 transitions. [2021-06-05 06:44:35,280 INFO L78 Accepts]: Start accepts. Automaton has 8428 states and 31791 transitions. Word has length 28 [2021-06-05 06:44:35,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:35,281 INFO L482 AbstractCegarLoop]: Abstraction has 8428 states and 31791 transitions. [2021-06-05 06:44:35,281 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 06:44:35,281 INFO L276 IsEmpty]: Start isEmpty. Operand 8428 states and 31791 transitions. [2021-06-05 06:44:35,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:35,292 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:35,292 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 06:44:35,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4055 [2021-06-05 06:44:35,493 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:35,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:35,493 INFO L82 PathProgramCache]: Analyzing trace with hash 795274241, now seen corresponding path program 90 times [2021-06-05 06:44:35,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:35,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736159107] [2021-06-05 06:44:35,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:35,523 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 06:44:35,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:35,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736159107] [2021-06-05 06:44:35,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736159107] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:35,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657494613] [2021-06-05 06:44:35,523 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 06:44:35,546 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:44:35,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:35,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:44:35,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:35,602 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 06:44:35,603 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657494613] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:35,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:35,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:44:35,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88696588] [2021-06-05 06:44:35,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:44:35,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:35,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:44:35,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:44:35,603 INFO L87 Difference]: Start difference. First operand 8428 states and 31791 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 06:44:35,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:35,994 INFO L93 Difference]: Finished difference Result 11465 states and 40959 transitions. [2021-06-05 06:44:35,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:44:35,995 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 06:44:35,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:36,014 INFO L225 Difference]: With dead ends: 11465 [2021-06-05 06:44:36,014 INFO L226 Difference]: Without dead ends: 11465 [2021-06-05 06:44:36,014 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 210.5ms TimeCoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 06:44:36,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11465 states. [2021-06-05 06:44:36,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11465 to 8331. [2021-06-05 06:44:36,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8331 states, 8330 states have (on average 3.768667466986795) internal successors, (31393), 8330 states have internal predecessors, (31393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:36,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8331 states to 8331 states and 31393 transitions. [2021-06-05 06:44:36,157 INFO L78 Accepts]: Start accepts. Automaton has 8331 states and 31393 transitions. Word has length 28 [2021-06-05 06:44:36,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:36,157 INFO L482 AbstractCegarLoop]: Abstraction has 8331 states and 31393 transitions. [2021-06-05 06:44:36,157 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 06:44:36,157 INFO L276 IsEmpty]: Start isEmpty. Operand 8331 states and 31393 transitions. [2021-06-05 06:44:36,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:36,168 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:36,168 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 06:44:36,368 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 160 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4056 [2021-06-05 06:44:36,368 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:36,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:36,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1444336905, now seen corresponding path program 91 times [2021-06-05 06:44:36,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:36,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538706049] [2021-06-05 06:44:36,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:36,405 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 06:44:36,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:36,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538706049] [2021-06-05 06:44:36,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538706049] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:36,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16632232] [2021-06-05 06:44:36,405 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 06:44:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:36,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:36,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:36,479 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 06:44:36,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16632232] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:36,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:36,479 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 06:44:36,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230748368] [2021-06-05 06:44:36,480 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:44:36,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:36,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:44:36,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:44:36,480 INFO L87 Difference]: Start difference. First operand 8331 states and 31393 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 06:44:37,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:37,101 INFO L93 Difference]: Finished difference Result 14086 states and 50169 transitions. [2021-06-05 06:44:37,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 06:44:37,102 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 06:44:37,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:37,129 INFO L225 Difference]: With dead ends: 14086 [2021-06-05 06:44:37,129 INFO L226 Difference]: Without dead ends: 14074 [2021-06-05 06:44:37,130 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 334.7ms TimeCoverageRelationStatistics Valid=564, Invalid=1986, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:44:37,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14074 states. [2021-06-05 06:44:37,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14074 to 8331. [2021-06-05 06:44:37,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8331 states, 8330 states have (on average 3.768187274909964) internal successors, (31389), 8330 states have internal predecessors, (31389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:37,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8331 states to 8331 states and 31389 transitions. [2021-06-05 06:44:37,360 INFO L78 Accepts]: Start accepts. Automaton has 8331 states and 31389 transitions. Word has length 28 [2021-06-05 06:44:37,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:37,360 INFO L482 AbstractCegarLoop]: Abstraction has 8331 states and 31389 transitions. [2021-06-05 06:44:37,361 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 06:44:37,361 INFO L276 IsEmpty]: Start isEmpty. Operand 8331 states and 31389 transitions. [2021-06-05 06:44:37,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:37,373 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:37,373 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 06:44:37,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4057 [2021-06-05 06:44:37,574 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:37,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:37,574 INFO L82 PathProgramCache]: Analyzing trace with hash -323944011, now seen corresponding path program 92 times [2021-06-05 06:44:37,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:37,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113893885] [2021-06-05 06:44:37,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:37,610 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 06:44:37,610 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:37,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113893885] [2021-06-05 06:44:37,610 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113893885] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:37,610 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190851727] [2021-06-05 06:44:37,610 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 06:44:37,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:37,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:37,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:37,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:37,699 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 06:44:37,700 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190851727] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:37,700 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:37,700 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:44:37,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838049712] [2021-06-05 06:44:37,700 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:37,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:37,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:37,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:37,700 INFO L87 Difference]: Start difference. First operand 8331 states and 31389 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 06:44:38,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:38,750 INFO L93 Difference]: Finished difference Result 21250 states and 74521 transitions. [2021-06-05 06:44:38,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-06-05 06:44:38,750 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 06:44:38,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:38,789 INFO L225 Difference]: With dead ends: 21250 [2021-06-05 06:44:38,790 INFO L226 Difference]: Without dead ends: 21250 [2021-06-05 06:44:38,790 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2104 ImplicationChecksByTransitivity, 640.3ms TimeCoverageRelationStatistics Valid=1218, Invalid=4482, Unknown=0, NotChecked=0, Total=5700 [2021-06-05 06:44:38,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21250 states. [2021-06-05 06:44:39,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21250 to 11363. [2021-06-05 06:44:39,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11363 states, 11362 states have (on average 3.808924485125858) internal successors, (43277), 11362 states have internal predecessors, (43277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:39,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11363 states to 11363 states and 43277 transitions. [2021-06-05 06:44:39,154 INFO L78 Accepts]: Start accepts. Automaton has 11363 states and 43277 transitions. Word has length 28 [2021-06-05 06:44:39,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:39,154 INFO L482 AbstractCegarLoop]: Abstraction has 11363 states and 43277 transitions. [2021-06-05 06:44:39,154 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 06:44:39,154 INFO L276 IsEmpty]: Start isEmpty. Operand 11363 states and 43277 transitions. [2021-06-05 06:44:39,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:39,171 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:39,171 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 06:44:39,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4058,162 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:39,373 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:39,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:39,373 INFO L82 PathProgramCache]: Analyzing trace with hash -242567923, now seen corresponding path program 93 times [2021-06-05 06:44:39,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:39,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024072972] [2021-06-05 06:44:39,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:39,411 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 06:44:39,411 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:39,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024072972] [2021-06-05 06:44:39,411 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024072972] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:39,411 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585217411] [2021-06-05 06:44:39,411 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 06:44:39,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 06:44:39,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:39,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:39,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:39,493 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 06:44:39,494 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585217411] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:39,494 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:39,494 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:44:39,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629216915] [2021-06-05 06:44:39,494 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:39,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:39,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:39,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:39,494 INFO L87 Difference]: Start difference. First operand 11363 states and 43277 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 06:44:40,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:40,427 INFO L93 Difference]: Finished difference Result 20481 states and 72514 transitions. [2021-06-05 06:44:40,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 06:44:40,428 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 06:44:40,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:40,465 INFO L225 Difference]: With dead ends: 20481 [2021-06-05 06:44:40,465 INFO L226 Difference]: Without dead ends: 20469 [2021-06-05 06:44:40,466 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1736 ImplicationChecksByTransitivity, 550.3ms TimeCoverageRelationStatistics Valid=1059, Invalid=3771, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:44:40,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20469 states. [2021-06-05 06:44:40,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20469 to 11177. [2021-06-05 06:44:40,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11177 states, 11176 states have (on average 3.815139584824624) internal successors, (42638), 11176 states have internal predecessors, (42638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:40,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11177 states to 11177 states and 42638 transitions. [2021-06-05 06:44:40,858 INFO L78 Accepts]: Start accepts. Automaton has 11177 states and 42638 transitions. Word has length 28 [2021-06-05 06:44:40,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:40,859 INFO L482 AbstractCegarLoop]: Abstraction has 11177 states and 42638 transitions. [2021-06-05 06:44:40,859 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 06:44:40,859 INFO L276 IsEmpty]: Start isEmpty. Operand 11177 states and 42638 transitions. [2021-06-05 06:44:40,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:40,876 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:40,876 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 06:44:41,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4059,163 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:41,077 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:41,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:41,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1757659895, now seen corresponding path program 94 times [2021-06-05 06:44:41,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:41,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118037413] [2021-06-05 06:44:41,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:41,117 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 06:44:41,117 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:41,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118037413] [2021-06-05 06:44:41,117 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118037413] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:41,117 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119193991] [2021-06-05 06:44:41,118 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 06:44:41,140 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:41,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:41,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:41,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:41,207 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 06:44:41,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119193991] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:41,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:41,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:44:41,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438417211] [2021-06-05 06:44:41,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:44:41,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:41,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:44:41,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:44:41,208 INFO L87 Difference]: Start difference. First operand 11177 states and 42638 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 06:44:42,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:42,204 INFO L93 Difference]: Finished difference Result 20316 states and 71936 transitions. [2021-06-05 06:44:42,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 06:44:42,205 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 06:44:42,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:42,242 INFO L225 Difference]: With dead ends: 20316 [2021-06-05 06:44:42,242 INFO L226 Difference]: Without dead ends: 20280 [2021-06-05 06:44:42,243 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1449 ImplicationChecksByTransitivity, 559.5ms TimeCoverageRelationStatistics Valid=906, Invalid=3384, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 06:44:42,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20280 states. [2021-06-05 06:44:42,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20280 to 11229. [2021-06-05 06:44:42,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11229 states, 11228 states have (on average 3.813323833273958) internal successors, (42816), 11228 states have internal predecessors, (42816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:42,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11229 states to 11229 states and 42816 transitions. [2021-06-05 06:44:42,533 INFO L78 Accepts]: Start accepts. Automaton has 11229 states and 42816 transitions. Word has length 28 [2021-06-05 06:44:42,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:42,533 INFO L482 AbstractCegarLoop]: Abstraction has 11229 states and 42816 transitions. [2021-06-05 06:44:42,533 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 06:44:42,534 INFO L276 IsEmpty]: Start isEmpty. Operand 11229 states and 42816 transitions. [2021-06-05 06:44:42,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:42,549 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:42,549 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 06:44:42,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4060 [2021-06-05 06:44:42,750 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:42,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:42,750 INFO L82 PathProgramCache]: Analyzing trace with hash -160533179, now seen corresponding path program 95 times [2021-06-05 06:44:42,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:42,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592567278] [2021-06-05 06:44:42,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:42,786 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 06:44:42,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:42,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592567278] [2021-06-05 06:44:42,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592567278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:42,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234242641] [2021-06-05 06:44:42,787 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 06:44:42,809 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:44:42,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:42,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:42,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:42,893 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 06:44:42,893 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234242641] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:42,893 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:42,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 06:44:42,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905077598] [2021-06-05 06:44:42,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:42,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:42,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:42,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:42,894 INFO L87 Difference]: Start difference. First operand 11229 states and 42816 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 06:44:44,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:44,173 INFO L93 Difference]: Finished difference Result 20201 states and 71663 transitions. [2021-06-05 06:44:44,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-06-05 06:44:44,173 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 06:44:44,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:44,210 INFO L225 Difference]: With dead ends: 20201 [2021-06-05 06:44:44,210 INFO L226 Difference]: Without dead ends: 20201 [2021-06-05 06:44:44,211 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2648 ImplicationChecksByTransitivity, 841.5ms TimeCoverageRelationStatistics Valid=1494, Invalid=5646, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 06:44:44,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20201 states. [2021-06-05 06:44:44,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20201 to 11425. [2021-06-05 06:44:44,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11425 states, 11424 states have (on average 3.804796918767507) internal successors, (43466), 11424 states have internal predecessors, (43466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:44,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11425 states to 11425 states and 43466 transitions. [2021-06-05 06:44:44,497 INFO L78 Accepts]: Start accepts. Automaton has 11425 states and 43466 transitions. Word has length 28 [2021-06-05 06:44:44,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:44,497 INFO L482 AbstractCegarLoop]: Abstraction has 11425 states and 43466 transitions. [2021-06-05 06:44:44,497 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 06:44:44,497 INFO L276 IsEmpty]: Start isEmpty. Operand 11425 states and 43466 transitions. [2021-06-05 06:44:44,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:44,514 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:44,514 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 06:44:44,714 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 165 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4061 [2021-06-05 06:44:44,715 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:44,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:44,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1482505975, now seen corresponding path program 96 times [2021-06-05 06:44:44,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:44,715 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630147572] [2021-06-05 06:44:44,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:44,751 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 06:44:44,751 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:44,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630147572] [2021-06-05 06:44:44,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630147572] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:44,751 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96090590] [2021-06-05 06:44:44,752 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 06:44:44,775 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 06:44:44,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:44,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:44,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:44,854 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 06:44:44,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96090590] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:44,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:44,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 06:44:44,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681057954] [2021-06-05 06:44:44,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:44,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:44,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:44,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:44,854 INFO L87 Difference]: Start difference. First operand 11425 states and 43466 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 06:44:46,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:46,043 INFO L93 Difference]: Finished difference Result 19821 states and 70618 transitions. [2021-06-05 06:44:46,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 06:44:46,044 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 06:44:46,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:46,080 INFO L225 Difference]: With dead ends: 19821 [2021-06-05 06:44:46,080 INFO L226 Difference]: Without dead ends: 19809 [2021-06-05 06:44:46,080 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2073 ImplicationChecksByTransitivity, 678.7ms TimeCoverageRelationStatistics Valid=1305, Invalid=4547, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 06:44:46,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19809 states. [2021-06-05 06:44:46,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19809 to 11307. [2021-06-05 06:44:46,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11307 states, 11306 states have (on average 3.8090394480806653) internal successors, (43065), 11306 states have internal predecessors, (43065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:46,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11307 states to 11307 states and 43065 transitions. [2021-06-05 06:44:46,357 INFO L78 Accepts]: Start accepts. Automaton has 11307 states and 43065 transitions. Word has length 28 [2021-06-05 06:44:46,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:46,357 INFO L482 AbstractCegarLoop]: Abstraction has 11307 states and 43065 transitions. [2021-06-05 06:44:46,357 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 06:44:46,357 INFO L276 IsEmpty]: Start isEmpty. Operand 11307 states and 43065 transitions. [2021-06-05 06:44:46,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:46,373 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:46,373 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 06:44:46,573 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4062,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:46,574 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:46,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:46,574 INFO L82 PathProgramCache]: Analyzing trace with hash 215048797, now seen corresponding path program 97 times [2021-06-05 06:44:46,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:46,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829307494] [2021-06-05 06:44:46,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:46,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:46,611 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 06:44:46,611 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:46,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829307494] [2021-06-05 06:44:46,611 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829307494] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:46,611 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274985097] [2021-06-05 06:44:46,611 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 06:44:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:46,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:46,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:46,701 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 06:44:46,701 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274985097] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:46,701 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:46,701 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-06-05 06:44:46,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561361705] [2021-06-05 06:44:46,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:44:46,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:46,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:44:46,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:44:46,702 INFO L87 Difference]: Start difference. First operand 11307 states and 43065 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 06:44:47,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:47,716 INFO L93 Difference]: Finished difference Result 19061 states and 68534 transitions. [2021-06-05 06:44:47,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 06:44:47,716 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 06:44:47,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:47,752 INFO L225 Difference]: With dead ends: 19061 [2021-06-05 06:44:47,752 INFO L226 Difference]: Without dead ends: 19025 [2021-06-05 06:44:47,753 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1442 ImplicationChecksByTransitivity, 548.3ms TimeCoverageRelationStatistics Valid=951, Invalid=3471, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:44:47,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19025 states. [2021-06-05 06:44:48,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19025 to 11331. [2021-06-05 06:44:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11331 states, 11330 states have (on average 3.8080317740511913) internal successors, (43145), 11330 states have internal predecessors, (43145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:48,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11331 states to 11331 states and 43145 transitions. [2021-06-05 06:44:48,099 INFO L78 Accepts]: Start accepts. Automaton has 11331 states and 43145 transitions. Word has length 28 [2021-06-05 06:44:48,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:48,099 INFO L482 AbstractCegarLoop]: Abstraction has 11331 states and 43145 transitions. [2021-06-05 06:44:48,099 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 06:44:48,099 INFO L276 IsEmpty]: Start isEmpty. Operand 11331 states and 43145 transitions. [2021-06-05 06:44:48,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:48,115 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:48,115 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 06:44:48,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 167 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4063 [2021-06-05 06:44:48,316 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:48,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:48,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1691162673, now seen corresponding path program 98 times [2021-06-05 06:44:48,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:48,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323144414] [2021-06-05 06:44:48,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:48,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:48,353 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 06:44:48,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:48,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323144414] [2021-06-05 06:44:48,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323144414] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:48,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757018504] [2021-06-05 06:44:48,354 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 06:44:48,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:48,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:48,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:48,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:48,502 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 06:44:48,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757018504] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:48,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:48,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:44:48,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030550912] [2021-06-05 06:44:48,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:48,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:48,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:48,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:48,503 INFO L87 Difference]: Start difference. First operand 11331 states and 43145 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 06:44:49,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:49,732 INFO L93 Difference]: Finished difference Result 27696 states and 98852 transitions. [2021-06-05 06:44:49,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-06-05 06:44:49,733 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 06:44:49,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:49,792 INFO L225 Difference]: With dead ends: 27696 [2021-06-05 06:44:49,792 INFO L226 Difference]: Without dead ends: 27696 [2021-06-05 06:44:49,793 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2316 ImplicationChecksByTransitivity, 743.7ms TimeCoverageRelationStatistics Valid=1326, Invalid=4680, Unknown=0, NotChecked=0, Total=6006 [2021-06-05 06:44:49,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27696 states. [2021-06-05 06:44:50,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27696 to 11621. [2021-06-05 06:44:50,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11621 states, 11620 states have (on average 3.831239242685026) internal successors, (44519), 11620 states have internal predecessors, (44519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:50,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11621 states to 11621 states and 44519 transitions. [2021-06-05 06:44:50,155 INFO L78 Accepts]: Start accepts. Automaton has 11621 states and 44519 transitions. Word has length 28 [2021-06-05 06:44:50,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:50,155 INFO L482 AbstractCegarLoop]: Abstraction has 11621 states and 44519 transitions. [2021-06-05 06:44:50,155 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 06:44:50,155 INFO L276 IsEmpty]: Start isEmpty. Operand 11621 states and 44519 transitions. [2021-06-05 06:44:50,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:50,172 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:50,172 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 06:44:50,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4064,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:50,372 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:50,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:50,373 INFO L82 PathProgramCache]: Analyzing trace with hash -2036852543, now seen corresponding path program 99 times [2021-06-05 06:44:50,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:50,373 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763044325] [2021-06-05 06:44:50,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:50,404 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 06:44:50,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:50,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763044325] [2021-06-05 06:44:50,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763044325] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:50,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501330866] [2021-06-05 06:44:50,405 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 06:44:50,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:44:50,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:50,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:50,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:50,615 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 06:44:50,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501330866] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:50,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:50,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:44:50,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604559502] [2021-06-05 06:44:50,615 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:50,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:50,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:50,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:50,616 INFO L87 Difference]: Start difference. First operand 11621 states and 44519 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 06:44:51,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:51,870 INFO L93 Difference]: Finished difference Result 27229 states and 97782 transitions. [2021-06-05 06:44:51,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-06-05 06:44:51,870 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 06:44:51,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:51,930 INFO L225 Difference]: With dead ends: 27229 [2021-06-05 06:44:51,930 INFO L226 Difference]: Without dead ends: 27229 [2021-06-05 06:44:51,930 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2280 ImplicationChecksByTransitivity, 785.8ms TimeCoverageRelationStatistics Valid=1315, Invalid=4537, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 06:44:51,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27229 states. [2021-06-05 06:44:52,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27229 to 11523. [2021-06-05 06:44:52,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11523 states, 11522 states have (on average 3.819562575941677) internal successors, (44009), 11522 states have internal predecessors, (44009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:52,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11523 states to 11523 states and 44009 transitions. [2021-06-05 06:44:52,342 INFO L78 Accepts]: Start accepts. Automaton has 11523 states and 44009 transitions. Word has length 28 [2021-06-05 06:44:52,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:52,343 INFO L482 AbstractCegarLoop]: Abstraction has 11523 states and 44009 transitions. [2021-06-05 06:44:52,343 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 06:44:52,343 INFO L276 IsEmpty]: Start isEmpty. Operand 11523 states and 44009 transitions. [2021-06-05 06:44:52,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:52,360 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:52,361 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 06:44:52,561 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 169 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4065 [2021-06-05 06:44:52,561 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:52,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:52,561 INFO L82 PathProgramCache]: Analyzing trace with hash 197254951, now seen corresponding path program 100 times [2021-06-05 06:44:52,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:52,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448385448] [2021-06-05 06:44:52,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:52,594 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 06:44:52,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:52,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448385448] [2021-06-05 06:44:52,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448385448] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:52,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957646300] [2021-06-05 06:44:52,595 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 06:44:52,622 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:44:52,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:52,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:52,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:52,710 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 06:44:52,710 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957646300] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:52,710 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:52,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:44:52,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943428125] [2021-06-05 06:44:52,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:44:52,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:52,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:44:52,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:44:52,711 INFO L87 Difference]: Start difference. First operand 11523 states and 44009 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 06:44:53,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:53,491 INFO L93 Difference]: Finished difference Result 21512 states and 77611 transitions. [2021-06-05 06:44:53,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 06:44:53,491 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 06:44:53,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:53,532 INFO L225 Difference]: With dead ends: 21512 [2021-06-05 06:44:53,533 INFO L226 Difference]: Without dead ends: 21512 [2021-06-05 06:44:53,533 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 434.7ms TimeCoverageRelationStatistics Valid=668, Invalid=2194, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 06:44:53,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21512 states. [2021-06-05 06:44:53,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21512 to 11532. [2021-06-05 06:44:53,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11532 states, 11531 states have (on average 3.8185760124880757) internal successors, (44032), 11531 states have internal predecessors, (44032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:53,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11532 states to 11532 states and 44032 transitions. [2021-06-05 06:44:53,814 INFO L78 Accepts]: Start accepts. Automaton has 11532 states and 44032 transitions. Word has length 28 [2021-06-05 06:44:53,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:53,814 INFO L482 AbstractCegarLoop]: Abstraction has 11532 states and 44032 transitions. [2021-06-05 06:44:53,814 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 06:44:53,814 INFO L276 IsEmpty]: Start isEmpty. Operand 11532 states and 44032 transitions. [2021-06-05 06:44:53,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:53,830 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:53,830 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 06:44:54,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 170 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4066 [2021-06-05 06:44:54,031 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:54,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:54,031 INFO L82 PathProgramCache]: Analyzing trace with hash -477466927, now seen corresponding path program 101 times [2021-06-05 06:44:54,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:54,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473974277] [2021-06-05 06:44:54,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:54,063 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 06:44:54,063 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:54,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473974277] [2021-06-05 06:44:54,063 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473974277] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:54,063 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925899122] [2021-06-05 06:44:54,064 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 06:44:54,087 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:44:54,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:54,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:54,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:54,171 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 06:44:54,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925899122] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:54,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:54,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:44:54,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274318712] [2021-06-05 06:44:54,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:44:54,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:54,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:44:54,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:44:54,172 INFO L87 Difference]: Start difference. First operand 11532 states and 44032 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 06:44:54,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:54,927 INFO L93 Difference]: Finished difference Result 19923 states and 72552 transitions. [2021-06-05 06:44:54,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 06:44:54,927 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 06:44:54,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:54,968 INFO L225 Difference]: With dead ends: 19923 [2021-06-05 06:44:54,968 INFO L226 Difference]: Without dead ends: 19923 [2021-06-05 06:44:54,968 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 431.9ms TimeCoverageRelationStatistics Valid=580, Invalid=1870, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:44:54,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19923 states. [2021-06-05 06:44:55,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19923 to 11544. [2021-06-05 06:44:55,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11544 states, 11543 states have (on average 3.817898293337954) internal successors, (44070), 11543 states have internal predecessors, (44070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:55,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11544 states to 11544 states and 44070 transitions. [2021-06-05 06:44:55,255 INFO L78 Accepts]: Start accepts. Automaton has 11544 states and 44070 transitions. Word has length 28 [2021-06-05 06:44:55,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:55,255 INFO L482 AbstractCegarLoop]: Abstraction has 11544 states and 44070 transitions. [2021-06-05 06:44:55,255 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 06:44:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 11544 states and 44070 transitions. [2021-06-05 06:44:55,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:55,272 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:55,272 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 06:44:55,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4067 [2021-06-05 06:44:55,473 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:55,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:55,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1175893249, now seen corresponding path program 102 times [2021-06-05 06:44:55,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:55,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570106738] [2021-06-05 06:44:55,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:55,509 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 06:44:55,509 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:55,509 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570106738] [2021-06-05 06:44:55,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570106738] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:55,510 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806146715] [2021-06-05 06:44:55,510 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 06:44:55,532 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-06-05 06:44:55,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:55,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:55,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:55,623 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 06:44:55,624 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806146715] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:55,624 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:55,624 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:44:55,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117268872] [2021-06-05 06:44:55,624 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:55,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:55,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:55,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:55,624 INFO L87 Difference]: Start difference. First operand 11544 states and 44070 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 06:44:56,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:56,636 INFO L93 Difference]: Finished difference Result 20543 states and 74326 transitions. [2021-06-05 06:44:56,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-06-05 06:44:56,637 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 06:44:56,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:56,678 INFO L225 Difference]: With dead ends: 20543 [2021-06-05 06:44:56,678 INFO L226 Difference]: Without dead ends: 20543 [2021-06-05 06:44:56,679 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1847 ImplicationChecksByTransitivity, 637.5ms TimeCoverageRelationStatistics Valid=1084, Invalid=4028, Unknown=0, NotChecked=0, Total=5112 [2021-06-05 06:44:56,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20543 states. [2021-06-05 06:44:56,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20543 to 11652. [2021-06-05 06:44:56,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11652 states, 11651 states have (on average 3.8111750064372156) internal successors, (44404), 11651 states have internal predecessors, (44404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:56,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11652 states to 11652 states and 44404 transitions. [2021-06-05 06:44:56,983 INFO L78 Accepts]: Start accepts. Automaton has 11652 states and 44404 transitions. Word has length 28 [2021-06-05 06:44:56,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:56,984 INFO L482 AbstractCegarLoop]: Abstraction has 11652 states and 44404 transitions. [2021-06-05 06:44:56,984 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 06:44:56,984 INFO L276 IsEmpty]: Start isEmpty. Operand 11652 states and 44404 transitions. [2021-06-05 06:44:57,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:57,001 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:57,001 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 06:44:57,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 172 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4068 [2021-06-05 06:44:57,202 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:57,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:57,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1476034893, now seen corresponding path program 103 times [2021-06-05 06:44:57,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:57,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16126333] [2021-06-05 06:44:57,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:57,234 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 06:44:57,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:57,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16126333] [2021-06-05 06:44:57,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16126333] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:57,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379380000] [2021-06-05 06:44:57,234 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 06:44:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:57,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:57,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:57,345 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 06:44:57,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379380000] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:57,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:57,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:44:57,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158229155] [2021-06-05 06:44:57,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:57,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:57,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:57,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:57,426 INFO L87 Difference]: Start difference. First operand 11652 states and 44404 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 06:44:58,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:44:58,324 INFO L93 Difference]: Finished difference Result 20102 states and 73128 transitions. [2021-06-05 06:44:58,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 06:44:58,324 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 06:44:58,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:44:58,366 INFO L225 Difference]: With dead ends: 20102 [2021-06-05 06:44:58,366 INFO L226 Difference]: Without dead ends: 20098 [2021-06-05 06:44:58,367 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1260 ImplicationChecksByTransitivity, 532.5ms TimeCoverageRelationStatistics Valid=880, Invalid=2902, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:44:58,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20098 states. [2021-06-05 06:44:58,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20098 to 11578. [2021-06-05 06:44:58,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 11577 states have (on average 3.814891595404682) internal successors, (44165), 11577 states have internal predecessors, (44165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:44:58,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 44165 transitions. [2021-06-05 06:44:58,664 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 44165 transitions. Word has length 28 [2021-06-05 06:44:58,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:44:58,664 INFO L482 AbstractCegarLoop]: Abstraction has 11578 states and 44165 transitions. [2021-06-05 06:44:58,664 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 06:44:58,664 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 44165 transitions. [2021-06-05 06:44:58,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:44:58,681 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:44:58,681 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 06:44:58,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4069,173 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:44:58,881 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:44:58,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:44:58,882 INFO L82 PathProgramCache]: Analyzing trace with hash 729404223, now seen corresponding path program 104 times [2021-06-05 06:44:58,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:44:58,882 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596817740] [2021-06-05 06:44:58,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:44:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:44:58,919 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 06:44:58,920 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:44:58,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596817740] [2021-06-05 06:44:58,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596817740] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:58,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132909008] [2021-06-05 06:44:58,920 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 06:44:58,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:44:58,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:44:58,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:44:58,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:44:59,030 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 06:44:59,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132909008] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:44:59,030 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:44:59,030 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:44:59,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561773080] [2021-06-05 06:44:59,030 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:44:59,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:44:59,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:44:59,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:44:59,031 INFO L87 Difference]: Start difference. First operand 11578 states and 44165 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 06:45:00,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:00,072 INFO L93 Difference]: Finished difference Result 19515 states and 70543 transitions. [2021-06-05 06:45:00,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-05 06:45:00,072 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 06:45:00,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:00,112 INFO L225 Difference]: With dead ends: 19515 [2021-06-05 06:45:00,112 INFO L226 Difference]: Without dead ends: 19515 [2021-06-05 06:45:00,113 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1704 ImplicationChecksByTransitivity, 624.9ms TimeCoverageRelationStatistics Valid=1023, Invalid=3669, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 06:45:00,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19515 states. [2021-06-05 06:45:00,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19515 to 11805. [2021-06-05 06:45:00,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11805 states, 11804 states have (on average 3.8176042019654353) internal successors, (45063), 11804 states have internal predecessors, (45063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:00,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11805 states to 11805 states and 45063 transitions. [2021-06-05 06:45:00,493 INFO L78 Accepts]: Start accepts. Automaton has 11805 states and 45063 transitions. Word has length 28 [2021-06-05 06:45:00,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:00,494 INFO L482 AbstractCegarLoop]: Abstraction has 11805 states and 45063 transitions. [2021-06-05 06:45:00,494 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 06:45:00,494 INFO L276 IsEmpty]: Start isEmpty. Operand 11805 states and 45063 transitions. [2021-06-05 06:45:00,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:00,512 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:00,512 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 06:45:00,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4070,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:00,713 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:00,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:00,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1909723903, now seen corresponding path program 105 times [2021-06-05 06:45:00,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:00,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210503605] [2021-06-05 06:45:00,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:00,755 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 06:45:00,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:00,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210503605] [2021-06-05 06:45:00,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210503605] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:00,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338258496] [2021-06-05 06:45:00,756 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 06:45:00,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 06:45:00,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:00,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:00,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:00,867 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 06:45:00,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338258496] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:00,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:00,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:45:00,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759310201] [2021-06-05 06:45:00,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:45:00,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:00,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:45:00,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:45:00,868 INFO L87 Difference]: Start difference. First operand 11805 states and 45063 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 06:45:01,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:01,843 INFO L93 Difference]: Finished difference Result 19219 states and 69718 transitions. [2021-06-05 06:45:01,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 06:45:01,843 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 06:45:01,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:01,886 INFO L225 Difference]: With dead ends: 19219 [2021-06-05 06:45:01,886 INFO L226 Difference]: Without dead ends: 19207 [2021-06-05 06:45:01,887 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 566.1ms TimeCoverageRelationStatistics Valid=893, Invalid=3267, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 06:45:01,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19207 states. [2021-06-05 06:45:02,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19207 to 11907. [2021-06-05 06:45:02,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11907 states, 11906 states have (on average 3.81202754913489) internal successors, (45386), 11906 states have internal predecessors, (45386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:02,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11907 states to 11907 states and 45386 transitions. [2021-06-05 06:45:02,199 INFO L78 Accepts]: Start accepts. Automaton has 11907 states and 45386 transitions. Word has length 28 [2021-06-05 06:45:02,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:02,199 INFO L482 AbstractCegarLoop]: Abstraction has 11907 states and 45386 transitions. [2021-06-05 06:45:02,199 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 06:45:02,199 INFO L276 IsEmpty]: Start isEmpty. Operand 11907 states and 45386 transitions. [2021-06-05 06:45:02,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:02,219 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:02,219 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 06:45:02,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 175 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4071 [2021-06-05 06:45:02,420 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:02,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:02,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1714650925, now seen corresponding path program 70 times [2021-06-05 06:45:02,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:02,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884786536] [2021-06-05 06:45:02,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:02,458 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 06:45:02,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:02,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884786536] [2021-06-05 06:45:02,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884786536] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:02,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747448190] [2021-06-05 06:45:02,458 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 06:45:02,479 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:45:02,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:02,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:02,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:02,538 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 06:45:02,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747448190] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:02,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:02,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 06:45:02,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313188220] [2021-06-05 06:45:02,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:45:02,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:02,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:45:02,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:45:02,539 INFO L87 Difference]: Start difference. First operand 11907 states and 45386 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 06:45:02,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:02,998 INFO L93 Difference]: Finished difference Result 16719 states and 62078 transitions. [2021-06-05 06:45:02,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-05 06:45:02,998 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 06:45:02,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:03,034 INFO L225 Difference]: With dead ends: 16719 [2021-06-05 06:45:03,035 INFO L226 Difference]: Without dead ends: 16719 [2021-06-05 06:45:03,035 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 233.3ms TimeCoverageRelationStatistics Valid=303, Invalid=887, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:45:03,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16719 states. [2021-06-05 06:45:03,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16719 to 11979. [2021-06-05 06:45:03,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11979 states, 11978 states have (on average 3.8078143262648187) internal successors, (45610), 11978 states have internal predecessors, (45610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:03,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11979 states to 11979 states and 45610 transitions. [2021-06-05 06:45:03,318 INFO L78 Accepts]: Start accepts. Automaton has 11979 states and 45610 transitions. Word has length 28 [2021-06-05 06:45:03,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:03,318 INFO L482 AbstractCegarLoop]: Abstraction has 11979 states and 45610 transitions. [2021-06-05 06:45:03,319 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 06:45:03,319 INFO L276 IsEmpty]: Start isEmpty. Operand 11979 states and 45610 transitions. [2021-06-05 06:45:03,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:03,336 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:03,336 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 06:45:03,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4072 [2021-06-05 06:45:03,537 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:03,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:03,537 INFO L82 PathProgramCache]: Analyzing trace with hash -55855667, now seen corresponding path program 71 times [2021-06-05 06:45:03,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:03,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587981680] [2021-06-05 06:45:03,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:03,569 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 06:45:03,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:03,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587981680] [2021-06-05 06:45:03,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587981680] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:03,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218269827] [2021-06-05 06:45:03,569 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 06:45:03,591 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:45:03,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:03,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:03,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:03,649 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 06:45:03,649 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218269827] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:03,649 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:03,649 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:45:03,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103868583] [2021-06-05 06:45:03,649 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:45:03,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:03,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:45:03,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:45:03,650 INFO L87 Difference]: Start difference. First operand 11979 states and 45610 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 06:45:04,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:04,187 INFO L93 Difference]: Finished difference Result 17700 states and 64924 transitions. [2021-06-05 06:45:04,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:45:04,187 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 06:45:04,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:04,226 INFO L225 Difference]: With dead ends: 17700 [2021-06-05 06:45:04,226 INFO L226 Difference]: Without dead ends: 17700 [2021-06-05 06:45:04,226 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 320.2ms TimeCoverageRelationStatistics Valid=390, Invalid=1332, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 06:45:04,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17700 states. [2021-06-05 06:45:04,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17700 to 12313. [2021-06-05 06:45:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12313 states, 12312 states have (on average 3.790529564652372) internal successors, (46669), 12312 states have internal predecessors, (46669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:04,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12313 states to 12313 states and 46669 transitions. [2021-06-05 06:45:04,517 INFO L78 Accepts]: Start accepts. Automaton has 12313 states and 46669 transitions. Word has length 28 [2021-06-05 06:45:04,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:04,517 INFO L482 AbstractCegarLoop]: Abstraction has 12313 states and 46669 transitions. [2021-06-05 06:45:04,517 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 06:45:04,517 INFO L276 IsEmpty]: Start isEmpty. Operand 12313 states and 46669 transitions. [2021-06-05 06:45:04,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:04,536 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:04,536 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 06:45:04,736 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 177 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4073 [2021-06-05 06:45:04,737 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:04,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:04,737 INFO L82 PathProgramCache]: Analyzing trace with hash -100676809, now seen corresponding path program 72 times [2021-06-05 06:45:04,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:04,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593825350] [2021-06-05 06:45:04,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:04,768 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 06:45:04,769 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:04,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593825350] [2021-06-05 06:45:04,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593825350] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:04,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673799057] [2021-06-05 06:45:04,769 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 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 06:45:04,795 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-05 06:45:04,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:04,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:04,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:04,848 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 06:45:04,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673799057] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:04,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:04,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:45:04,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731024299] [2021-06-05 06:45:04,849 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:45:04,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:04,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:45:04,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:45:04,849 INFO L87 Difference]: Start difference. First operand 12313 states and 46669 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 06:45:05,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:05,270 INFO L93 Difference]: Finished difference Result 17190 states and 63587 transitions. [2021-06-05 06:45:05,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-05 06:45:05,270 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 06:45:05,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:05,309 INFO L225 Difference]: With dead ends: 17190 [2021-06-05 06:45:05,309 INFO L226 Difference]: Without dead ends: 17182 [2021-06-05 06:45:05,309 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 212.4ms TimeCoverageRelationStatistics Valid=295, Invalid=895, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 06:45:05,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17182 states. [2021-06-05 06:45:05,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17182 to 12253. [2021-06-05 06:45:05,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12253 states, 12252 states have (on average 3.7924420502775056) internal successors, (46465), 12252 states have internal predecessors, (46465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:05,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12253 states to 12253 states and 46465 transitions. [2021-06-05 06:45:05,603 INFO L78 Accepts]: Start accepts. Automaton has 12253 states and 46465 transitions. Word has length 28 [2021-06-05 06:45:05,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:05,603 INFO L482 AbstractCegarLoop]: Abstraction has 12253 states and 46465 transitions. [2021-06-05 06:45:05,604 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 06:45:05,604 INFO L276 IsEmpty]: Start isEmpty. Operand 12253 states and 46465 transitions. [2021-06-05 06:45:05,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:05,623 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:05,623 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 06:45:05,823 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 178 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4074 [2021-06-05 06:45:05,824 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:05,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:05,824 INFO L82 PathProgramCache]: Analyzing trace with hash 496659849, now seen corresponding path program 73 times [2021-06-05 06:45:05,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:05,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322862594] [2021-06-05 06:45:05,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:05,861 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 06:45:05,861 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:05,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322862594] [2021-06-05 06:45:05,861 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322862594] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:05,861 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145938815] [2021-06-05 06:45:05,861 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 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 06:45:05,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:05,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:05,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:05,956 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 06:45:05,956 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145938815] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:05,956 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:05,956 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 06:45:05,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827346143] [2021-06-05 06:45:05,957 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:45:05,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:05,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:45:05,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:45:05,957 INFO L87 Difference]: Start difference. First operand 12253 states and 46465 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 06:45:06,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:06,415 INFO L93 Difference]: Finished difference Result 17090 states and 63299 transitions. [2021-06-05 06:45:06,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-05 06:45:06,416 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 06:45:06,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:06,455 INFO L225 Difference]: With dead ends: 17090 [2021-06-05 06:45:06,455 INFO L226 Difference]: Without dead ends: 17078 [2021-06-05 06:45:06,455 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 232.7ms TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 06:45:06,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17078 states. [2021-06-05 06:45:06,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17078 to 12219. [2021-06-05 06:45:06,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12219 states, 12218 states have (on average 3.7944017024062857) internal successors, (46360), 12218 states have internal predecessors, (46360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:06,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12219 states to 12219 states and 46360 transitions. [2021-06-05 06:45:06,734 INFO L78 Accepts]: Start accepts. Automaton has 12219 states and 46360 transitions. Word has length 28 [2021-06-05 06:45:06,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:06,734 INFO L482 AbstractCegarLoop]: Abstraction has 12219 states and 46360 transitions. [2021-06-05 06:45:06,734 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 06:45:06,734 INFO L276 IsEmpty]: Start isEmpty. Operand 12219 states and 46360 transitions. [2021-06-05 06:45:06,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:06,753 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:06,753 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 06:45:06,953 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 179 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4075 [2021-06-05 06:45:06,954 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:06,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:06,954 INFO L82 PathProgramCache]: Analyzing trace with hash -158749623, now seen corresponding path program 74 times [2021-06-05 06:45:06,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:06,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260984515] [2021-06-05 06:45:06,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:06,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:06,987 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 06:45:06,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:06,987 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260984515] [2021-06-05 06:45:06,987 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260984515] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:06,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055060102] [2021-06-05 06:45:06,988 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 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 06:45:07,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:45:07,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:07,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:07,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:07,096 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 06:45:07,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055060102] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:07,097 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:07,097 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:45:07,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653051071] [2021-06-05 06:45:07,097 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:45:07,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:07,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:45:07,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:45:07,097 INFO L87 Difference]: Start difference. First operand 12219 states and 46360 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 06:45:08,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:08,020 INFO L93 Difference]: Finished difference Result 23045 states and 82416 transitions. [2021-06-05 06:45:08,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:45:08,020 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 06:45:08,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:08,069 INFO L225 Difference]: With dead ends: 23045 [2021-06-05 06:45:08,069 INFO L226 Difference]: Without dead ends: 23045 [2021-06-05 06:45:08,069 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1139 ImplicationChecksByTransitivity, 524.6ms TimeCoverageRelationStatistics Valid=798, Invalid=2394, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 06:45:08,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23045 states. [2021-06-05 06:45:08,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23045 to 12201. [2021-06-05 06:45:08,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12201 states, 12200 states have (on average 3.7931967213114755) internal successors, (46277), 12200 states have internal predecessors, (46277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:08,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12201 states to 12201 states and 46277 transitions. [2021-06-05 06:45:08,383 INFO L78 Accepts]: Start accepts. Automaton has 12201 states and 46277 transitions. Word has length 28 [2021-06-05 06:45:08,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:08,383 INFO L482 AbstractCegarLoop]: Abstraction has 12201 states and 46277 transitions. [2021-06-05 06:45:08,383 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 06:45:08,383 INFO L276 IsEmpty]: Start isEmpty. Operand 12201 states and 46277 transitions. [2021-06-05 06:45:08,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:08,402 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:08,402 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 06:45:08,603 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4076,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:08,603 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:08,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:08,603 INFO L82 PathProgramCache]: Analyzing trace with hash 368022285, now seen corresponding path program 106 times [2021-06-05 06:45:08,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:08,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017155025] [2021-06-05 06:45:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:08,628 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 06:45:08,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:08,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017155025] [2021-06-05 06:45:08,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017155025] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:08,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052861554] [2021-06-05 06:45:08,628 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 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 06:45:08,649 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:45:08,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:08,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:08,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:08,728 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 06:45:08,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052861554] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:08,728 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:08,728 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 06:45:08,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653660078] [2021-06-05 06:45:08,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:45:08,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:08,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:45:08,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:45:08,729 INFO L87 Difference]: Start difference. First operand 12201 states and 46277 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 06:45:09,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:09,381 INFO L93 Difference]: Finished difference Result 18822 states and 68098 transitions. [2021-06-05 06:45:09,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-06-05 06:45:09,381 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 06:45:09,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:09,419 INFO L225 Difference]: With dead ends: 18822 [2021-06-05 06:45:09,419 INFO L226 Difference]: Without dead ends: 18806 [2021-06-05 06:45:09,420 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 346.1ms TimeCoverageRelationStatistics Valid=478, Invalid=1414, Unknown=0, NotChecked=0, Total=1892 [2021-06-05 06:45:09,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18806 states. [2021-06-05 06:45:09,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18806 to 13509. [2021-06-05 06:45:09,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13509 states, 13508 states have (on average 3.85475273911756) internal successors, (52070), 13508 states have internal predecessors, (52070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:09,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13509 states to 13509 states and 52070 transitions. [2021-06-05 06:45:09,747 INFO L78 Accepts]: Start accepts. Automaton has 13509 states and 52070 transitions. Word has length 28 [2021-06-05 06:45:09,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:09,747 INFO L482 AbstractCegarLoop]: Abstraction has 13509 states and 52070 transitions. [2021-06-05 06:45:09,747 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 06:45:09,747 INFO L276 IsEmpty]: Start isEmpty. Operand 13509 states and 52070 transitions. [2021-06-05 06:45:09,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:09,767 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:09,767 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 06:45:09,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 181 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4077 [2021-06-05 06:45:09,968 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:09,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:09,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1040435067, now seen corresponding path program 107 times [2021-06-05 06:45:09,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:09,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124605693] [2021-06-05 06:45:09,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:09,993 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 06:45:09,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:09,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124605693] [2021-06-05 06:45:09,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124605693] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:09,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812943842] [2021-06-05 06:45:09,993 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 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 06:45:10,015 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:45:10,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:10,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:10,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:10,092 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 06:45:10,092 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812943842] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:10,092 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:10,092 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2021-06-05 06:45:10,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060953395] [2021-06-05 06:45:10,092 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:45:10,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:10,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:45:10,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:45:10,092 INFO L87 Difference]: Start difference. First operand 13509 states and 52070 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 06:45:10,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:10,801 INFO L93 Difference]: Finished difference Result 18923 states and 68358 transitions. [2021-06-05 06:45:10,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 06:45:10,801 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 06:45:10,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:10,840 INFO L225 Difference]: With dead ends: 18923 [2021-06-05 06:45:10,841 INFO L226 Difference]: Without dead ends: 18917 [2021-06-05 06:45:10,841 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 377.5ms TimeCoverageRelationStatistics Valid=541, Invalid=1715, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 06:45:10,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18917 states. [2021-06-05 06:45:11,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18917 to 13479. [2021-06-05 06:45:11,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13479 states, 13478 states have (on average 3.8540584656477224) internal successors, (51945), 13478 states have internal predecessors, (51945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13479 states to 13479 states and 51945 transitions. [2021-06-05 06:45:11,218 INFO L78 Accepts]: Start accepts. Automaton has 13479 states and 51945 transitions. Word has length 28 [2021-06-05 06:45:11,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:11,218 INFO L482 AbstractCegarLoop]: Abstraction has 13479 states and 51945 transitions. [2021-06-05 06:45:11,218 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 06:45:11,218 INFO L276 IsEmpty]: Start isEmpty. Operand 13479 states and 51945 transitions. [2021-06-05 06:45:11,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:11,239 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:11,239 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 06:45:11,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4078,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:11,440 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:11,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:11,440 INFO L82 PathProgramCache]: Analyzing trace with hash -774903755, now seen corresponding path program 108 times [2021-06-05 06:45:11,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:11,440 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508946850] [2021-06-05 06:45:11,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:11,464 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 06:45:11,465 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:11,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508946850] [2021-06-05 06:45:11,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508946850] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:11,465 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219709455] [2021-06-05 06:45:11,465 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 06:45:11,487 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:45:11,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:11,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:11,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:11,555 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 06:45:11,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219709455] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:11,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:11,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-06-05 06:45:11,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504369549] [2021-06-05 06:45:11,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:45:11,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:11,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:45:11,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:45:11,556 INFO L87 Difference]: Start difference. First operand 13479 states and 51945 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 06:45:12,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:12,138 INFO L93 Difference]: Finished difference Result 21275 states and 76975 transitions. [2021-06-05 06:45:12,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:45:12,138 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 06:45:12,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:12,179 INFO L225 Difference]: With dead ends: 21275 [2021-06-05 06:45:12,179 INFO L226 Difference]: Without dead ends: 21259 [2021-06-05 06:45:12,179 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 295.3ms TimeCoverageRelationStatistics Valid=416, Invalid=1224, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:45:12,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21259 states. [2021-06-05 06:45:12,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21259 to 13567. [2021-06-05 06:45:12,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13567 states, 13566 states have (on average 3.861270824119121) internal successors, (52382), 13566 states have internal predecessors, (52382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:12,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13567 states to 13567 states and 52382 transitions. [2021-06-05 06:45:12,504 INFO L78 Accepts]: Start accepts. Automaton has 13567 states and 52382 transitions. Word has length 28 [2021-06-05 06:45:12,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:12,505 INFO L482 AbstractCegarLoop]: Abstraction has 13567 states and 52382 transitions. [2021-06-05 06:45:12,505 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 06:45:12,505 INFO L276 IsEmpty]: Start isEmpty. Operand 13567 states and 52382 transitions. [2021-06-05 06:45:12,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:12,528 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:12,528 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 06:45:12,728 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4079 [2021-06-05 06:45:12,728 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:12,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:12,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1457648085, now seen corresponding path program 109 times [2021-06-05 06:45:12,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:12,729 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562089821] [2021-06-05 06:45:12,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:12,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:12,754 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 06:45:12,754 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:12,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562089821] [2021-06-05 06:45:12,754 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562089821] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:12,754 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716796522] [2021-06-05 06:45:12,754 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 06:45:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:12,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:12,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:12,852 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 06:45:12,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716796522] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:12,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:12,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-06-05 06:45:12,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311876099] [2021-06-05 06:45:12,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:45:12,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:12,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:45:12,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:45:12,853 INFO L87 Difference]: Start difference. First operand 13567 states and 52382 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 06:45:13,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:13,516 INFO L93 Difference]: Finished difference Result 22620 states and 81208 transitions. [2021-06-05 06:45:13,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-06-05 06:45:13,516 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 06:45:13,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:13,564 INFO L225 Difference]: With dead ends: 22620 [2021-06-05 06:45:13,564 INFO L226 Difference]: Without dead ends: 22620 [2021-06-05 06:45:13,565 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 362.5ms TimeCoverageRelationStatistics Valid=524, Invalid=1638, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 06:45:13,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22620 states. [2021-06-05 06:45:13,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22620 to 13595. [2021-06-05 06:45:13,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13595 states, 13594 states have (on average 3.8592761512431957) internal successors, (52463), 13594 states have internal predecessors, (52463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:13,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13595 states to 13595 states and 52463 transitions. [2021-06-05 06:45:13,920 INFO L78 Accepts]: Start accepts. Automaton has 13595 states and 52463 transitions. Word has length 28 [2021-06-05 06:45:13,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:13,920 INFO L482 AbstractCegarLoop]: Abstraction has 13595 states and 52463 transitions. [2021-06-05 06:45:13,921 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 06:45:13,921 INFO L276 IsEmpty]: Start isEmpty. Operand 13595 states and 52463 transitions. [2021-06-05 06:45:13,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:13,943 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:13,943 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 06:45:14,143 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4080,184 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:14,144 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:14,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:14,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1381492369, now seen corresponding path program 75 times [2021-06-05 06:45:14,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:14,144 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242017143] [2021-06-05 06:45:14,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:14,175 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 06:45:14,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:14,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242017143] [2021-06-05 06:45:14,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242017143] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:14,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968816743] [2021-06-05 06:45:14,175 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 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 06:45:14,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-06-05 06:45:14,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:14,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:14,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:14,357 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 06:45:14,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968816743] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:14,358 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:14,358 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 06:45:14,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749102883] [2021-06-05 06:45:14,358 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:45:14,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:14,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:45:14,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:45:14,358 INFO L87 Difference]: Start difference. First operand 13595 states and 52463 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 06:45:15,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:15,206 INFO L93 Difference]: Finished difference Result 23180 states and 85433 transitions. [2021-06-05 06:45:15,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-06-05 06:45:15,206 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 06:45:15,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:15,254 INFO L225 Difference]: With dead ends: 23180 [2021-06-05 06:45:15,254 INFO L226 Difference]: Without dead ends: 23176 [2021-06-05 06:45:15,254 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 482.0ms TimeCoverageRelationStatistics Valid=837, Invalid=2823, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 06:45:15,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23176 states. [2021-06-05 06:45:15,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23176 to 13849. [2021-06-05 06:45:15,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13849 states, 13848 states have (on average 3.849364529173888) internal successors, (53306), 13848 states have internal predecessors, (53306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:15,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13849 states to 13849 states and 53306 transitions. [2021-06-05 06:45:15,630 INFO L78 Accepts]: Start accepts. Automaton has 13849 states and 53306 transitions. Word has length 28 [2021-06-05 06:45:15,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:15,630 INFO L482 AbstractCegarLoop]: Abstraction has 13849 states and 53306 transitions. [2021-06-05 06:45:15,630 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 06:45:15,630 INFO L276 IsEmpty]: Start isEmpty. Operand 13849 states and 53306 transitions. [2021-06-05 06:45:15,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:15,650 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:15,651 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 06:45:15,851 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4081 [2021-06-05 06:45:15,851 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:15,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:15,851 INFO L82 PathProgramCache]: Analyzing trace with hash -516108431, now seen corresponding path program 110 times [2021-06-05 06:45:15,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:15,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690091835] [2021-06-05 06:45:15,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:15,880 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 06:45:15,880 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:15,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690091835] [2021-06-05 06:45:15,880 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690091835] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:15,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523699937] [2021-06-05 06:45:15,880 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 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 06:45:15,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:45:15,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:15,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:15,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:15,964 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 06:45:15,965 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523699937] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:15,965 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:15,965 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:45:15,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602487053] [2021-06-05 06:45:15,965 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:45:15,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:15,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:45:15,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:45:15,965 INFO L87 Difference]: Start difference. First operand 13849 states and 53306 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 06:45:16,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:16,560 INFO L93 Difference]: Finished difference Result 20157 states and 74048 transitions. [2021-06-05 06:45:16,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-06-05 06:45:16,561 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 06:45:16,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:16,604 INFO L225 Difference]: With dead ends: 20157 [2021-06-05 06:45:16,604 INFO L226 Difference]: Without dead ends: 20131 [2021-06-05 06:45:16,605 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 309.8ms TimeCoverageRelationStatistics Valid=449, Invalid=1273, Unknown=0, NotChecked=0, Total=1722 [2021-06-05 06:45:16,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20131 states. [2021-06-05 06:45:16,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20131 to 13251. [2021-06-05 06:45:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13251 states, 13250 states have (on average 3.8595471698113206) internal successors, (51139), 13250 states have internal predecessors, (51139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:16,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13251 states to 13251 states and 51139 transitions. [2021-06-05 06:45:16,923 INFO L78 Accepts]: Start accepts. Automaton has 13251 states and 51139 transitions. Word has length 28 [2021-06-05 06:45:16,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:16,923 INFO L482 AbstractCegarLoop]: Abstraction has 13251 states and 51139 transitions. [2021-06-05 06:45:16,923 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 06:45:16,923 INFO L276 IsEmpty]: Start isEmpty. Operand 13251 states and 51139 transitions. [2021-06-05 06:45:16,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:16,944 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:16,945 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 06:45:17,145 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4082,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:17,145 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:17,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:17,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1198852761, now seen corresponding path program 111 times [2021-06-05 06:45:17,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:17,145 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460582262] [2021-06-05 06:45:17,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:17,173 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 06:45:17,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:17,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460582262] [2021-06-05 06:45:17,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460582262] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:17,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383956907] [2021-06-05 06:45:17,174 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 06:45:17,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:45:17,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:17,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:17,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:17,261 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 06:45:17,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383956907] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:17,261 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:17,261 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:45:17,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198745547] [2021-06-05 06:45:17,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:45:17,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:17,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:45:17,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:45:17,262 INFO L87 Difference]: Start difference. First operand 13251 states and 51139 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 06:45:17,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:17,991 INFO L93 Difference]: Finished difference Result 19214 states and 69517 transitions. [2021-06-05 06:45:17,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:45:17,991 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 06:45:17,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:18,031 INFO L225 Difference]: With dead ends: 19214 [2021-06-05 06:45:18,032 INFO L226 Difference]: Without dead ends: 19214 [2021-06-05 06:45:18,032 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 380.8ms TimeCoverageRelationStatistics Valid=608, Invalid=1744, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:45:18,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19214 states. [2021-06-05 06:45:18,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19214 to 13464. [2021-06-05 06:45:18,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13464 states, 13463 states have (on average 3.854935749832875) internal successors, (51899), 13463 states have internal predecessors, (51899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:18,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13464 states to 13464 states and 51899 transitions. [2021-06-05 06:45:18,336 INFO L78 Accepts]: Start accepts. Automaton has 13464 states and 51899 transitions. Word has length 28 [2021-06-05 06:45:18,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:18,336 INFO L482 AbstractCegarLoop]: Abstraction has 13464 states and 51899 transitions. [2021-06-05 06:45:18,336 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 06:45:18,336 INFO L276 IsEmpty]: Start isEmpty. Operand 13464 states and 51899 transitions. [2021-06-05 06:45:18,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:18,357 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:18,357 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 06:45:18,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4083,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:18,557 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:18,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:18,558 INFO L82 PathProgramCache]: Analyzing trace with hash -674876415, now seen corresponding path program 112 times [2021-06-05 06:45:18,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:18,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631910105] [2021-06-05 06:45:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:18,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:18,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:18,586 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631910105] [2021-06-05 06:45:18,586 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631910105] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:18,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568593701] [2021-06-05 06:45:18,587 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 06:45:18,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:45:18,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:18,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:18,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:18,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:45:18,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568593701] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:18,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:18,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:45:18,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508883450] [2021-06-05 06:45:18,674 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:45:18,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:18,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:45:18,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:45:18,674 INFO L87 Difference]: Start difference. First operand 13464 states and 51899 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 06:45:19,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:19,282 INFO L93 Difference]: Finished difference Result 20483 states and 74562 transitions. [2021-06-05 06:45:19,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:45:19,282 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 06:45:19,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:19,323 INFO L225 Difference]: With dead ends: 20483 [2021-06-05 06:45:19,323 INFO L226 Difference]: Without dead ends: 20483 [2021-06-05 06:45:19,324 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 330.1ms TimeCoverageRelationStatistics Valid=505, Invalid=1301, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:45:19,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20483 states. [2021-06-05 06:45:19,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20483 to 14177. [2021-06-05 06:45:19,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14177 states, 14176 states have (on average 3.8409988713318284) internal successors, (54450), 14176 states have internal predecessors, (54450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:19,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14177 states to 14177 states and 54450 transitions. [2021-06-05 06:45:19,637 INFO L78 Accepts]: Start accepts. Automaton has 14177 states and 54450 transitions. Word has length 28 [2021-06-05 06:45:19,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:19,637 INFO L482 AbstractCegarLoop]: Abstraction has 14177 states and 54450 transitions. [2021-06-05 06:45:19,637 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 06:45:19,637 INFO L276 IsEmpty]: Start isEmpty. Operand 14177 states and 54450 transitions. [2021-06-05 06:45:19,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:19,658 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:19,658 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 06:45:19,858 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4084 [2021-06-05 06:45:19,858 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:19,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:19,859 INFO L82 PathProgramCache]: Analyzing trace with hash 78789957, now seen corresponding path program 113 times [2021-06-05 06:45:19,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:19,859 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673138956] [2021-06-05 06:45:19,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:19,887 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 06:45:19,888 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:19,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673138956] [2021-06-05 06:45:19,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673138956] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:19,888 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147009662] [2021-06-05 06:45:19,888 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 06:45:19,914 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:45:19,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:19,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:19,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:19,984 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 06:45:19,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147009662] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:19,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:19,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:45:19,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7817065] [2021-06-05 06:45:19,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:45:19,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:19,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:45:19,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:45:19,985 INFO L87 Difference]: Start difference. First operand 14177 states and 54450 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 06:45:20,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:20,765 INFO L93 Difference]: Finished difference Result 22983 states and 82487 transitions. [2021-06-05 06:45:20,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:45:20,766 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 06:45:20,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:20,812 INFO L225 Difference]: With dead ends: 22983 [2021-06-05 06:45:20,812 INFO L226 Difference]: Without dead ends: 22983 [2021-06-05 06:45:20,812 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 436.4ms TimeCoverageRelationStatistics Valid=698, Invalid=1752, Unknown=0, NotChecked=0, Total=2450 [2021-06-05 06:45:20,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22983 states. [2021-06-05 06:45:21,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22983 to 14420. [2021-06-05 06:45:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14420 states, 14419 states have (on average 3.8541507732852485) internal successors, (55573), 14419 states have internal predecessors, (55573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:21,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14420 states to 14420 states and 55573 transitions. [2021-06-05 06:45:21,210 INFO L78 Accepts]: Start accepts. Automaton has 14420 states and 55573 transitions. Word has length 28 [2021-06-05 06:45:21,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:21,210 INFO L482 AbstractCegarLoop]: Abstraction has 14420 states and 55573 transitions. [2021-06-05 06:45:21,210 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 06:45:21,210 INFO L276 IsEmpty]: Start isEmpty. Operand 14420 states and 55573 transitions. [2021-06-05 06:45:21,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:21,234 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:21,234 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 06:45:21,436 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4085,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:21,437 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:21,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:21,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1952101299, now seen corresponding path program 76 times [2021-06-05 06:45:21,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:21,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531763400] [2021-06-05 06:45:21,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:21,471 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 06:45:21,471 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:21,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531763400] [2021-06-05 06:45:21,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531763400] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:21,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902255921] [2021-06-05 06:45:21,471 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 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 06:45:21,495 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:45:21,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:21,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:21,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:21,588 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 06:45:21,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902255921] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:21,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:21,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:45:21,588 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584696949] [2021-06-05 06:45:21,589 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:45:21,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:21,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:45:21,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:45:21,589 INFO L87 Difference]: Start difference. First operand 14420 states and 55573 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 06:45:23,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:23,024 INFO L93 Difference]: Finished difference Result 39692 states and 142842 transitions. [2021-06-05 06:45:23,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-05 06:45:23,024 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 06:45:23,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:23,118 INFO L225 Difference]: With dead ends: 39692 [2021-06-05 06:45:23,118 INFO L226 Difference]: Without dead ends: 39692 [2021-06-05 06:45:23,119 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2606 ImplicationChecksByTransitivity, 833.1ms TimeCoverageRelationStatistics Valid=1532, Invalid=5608, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 06:45:23,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39692 states. [2021-06-05 06:45:23,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39692 to 15659. [2021-06-05 06:45:23,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15659 states, 15658 states have (on average 3.899093115340401) internal successors, (61052), 15658 states have internal predecessors, (61052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15659 states to 15659 states and 61052 transitions. [2021-06-05 06:45:23,695 INFO L78 Accepts]: Start accepts. Automaton has 15659 states and 61052 transitions. Word has length 28 [2021-06-05 06:45:23,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:23,696 INFO L482 AbstractCegarLoop]: Abstraction has 15659 states and 61052 transitions. [2021-06-05 06:45:23,696 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 06:45:23,696 INFO L276 IsEmpty]: Start isEmpty. Operand 15659 states and 61052 transitions. [2021-06-05 06:45:23,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:23,720 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:23,720 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 06:45:23,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4086 [2021-06-05 06:45:23,925 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:23,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:23,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1385149219, now seen corresponding path program 77 times [2021-06-05 06:45:23,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:23,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080113330] [2021-06-05 06:45:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:23,957 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 06:45:23,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:23,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080113330] [2021-06-05 06:45:23,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080113330] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:23,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139859026] [2021-06-05 06:45:23,957 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 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 06:45:23,989 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-05 06:45:23,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:23,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:23,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:24,084 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 06:45:24,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139859026] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:24,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:24,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:45:24,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978314832] [2021-06-05 06:45:24,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:45:24,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:24,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:45:24,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:45:24,085 INFO L87 Difference]: Start difference. First operand 15659 states and 61052 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 06:45:25,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:25,649 INFO L93 Difference]: Finished difference Result 38708 states and 140253 transitions. [2021-06-05 06:45:25,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-05 06:45:25,649 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 06:45:25,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:25,753 INFO L225 Difference]: With dead ends: 38708 [2021-06-05 06:45:25,753 INFO L226 Difference]: Without dead ends: 38708 [2021-06-05 06:45:25,754 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2605 ImplicationChecksByTransitivity, 955.0ms TimeCoverageRelationStatistics Valid=1532, Invalid=5608, Unknown=0, NotChecked=0, Total=7140 [2021-06-05 06:45:25,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38708 states. [2021-06-05 06:45:26,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38708 to 15633. [2021-06-05 06:45:26,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15633 states, 15632 states have (on average 3.895598771750256) internal successors, (60896), 15632 states have internal predecessors, (60896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:26,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15633 states to 15633 states and 60896 transitions. [2021-06-05 06:45:26,320 INFO L78 Accepts]: Start accepts. Automaton has 15633 states and 60896 transitions. Word has length 28 [2021-06-05 06:45:26,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:26,320 INFO L482 AbstractCegarLoop]: Abstraction has 15633 states and 60896 transitions. [2021-06-05 06:45:26,320 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 06:45:26,320 INFO L276 IsEmpty]: Start isEmpty. Operand 15633 states and 60896 transitions. [2021-06-05 06:45:26,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:26,344 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:26,344 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 06:45:26,544 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 191 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4087 [2021-06-05 06:45:26,544 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:26,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:26,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1667375567, now seen corresponding path program 114 times [2021-06-05 06:45:26,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:26,545 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906716758] [2021-06-05 06:45:26,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:26,577 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 06:45:26,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:26,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906716758] [2021-06-05 06:45:26,578 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906716758] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:26,578 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272439505] [2021-06-05 06:45:26,578 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 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 06:45:26,604 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:45:26,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:26,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:26,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:26,652 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 06:45:26,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272439505] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:26,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:26,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:45:26,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720018465] [2021-06-05 06:45:26,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:45:26,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:26,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:45:26,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:45:26,653 INFO L87 Difference]: Start difference. First operand 15633 states and 60896 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 06:45:26,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:26,923 INFO L93 Difference]: Finished difference Result 24061 states and 92296 transitions. [2021-06-05 06:45:26,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 06:45:26,923 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 06:45:26,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:26,978 INFO L225 Difference]: With dead ends: 24061 [2021-06-05 06:45:26,978 INFO L226 Difference]: Without dead ends: 24014 [2021-06-05 06:45:26,978 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 95.8ms TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2021-06-05 06:45:27,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24014 states. [2021-06-05 06:45:27,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24014 to 20722. [2021-06-05 06:45:27,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20722 states, 20721 states have (on average 3.9071473384489166) internal successors, (80960), 20721 states have internal predecessors, (80960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:27,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20722 states to 20722 states and 80960 transitions. [2021-06-05 06:45:27,393 INFO L78 Accepts]: Start accepts. Automaton has 20722 states and 80960 transitions. Word has length 28 [2021-06-05 06:45:27,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:27,393 INFO L482 AbstractCegarLoop]: Abstraction has 20722 states and 80960 transitions. [2021-06-05 06:45:27,393 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 06:45:27,393 INFO L276 IsEmpty]: Start isEmpty. Operand 20722 states and 80960 transitions. [2021-06-05 06:45:27,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:27,426 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:27,426 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 06:45:27,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4088,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:27,627 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:27,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:27,627 INFO L82 PathProgramCache]: Analyzing trace with hash 242691175, now seen corresponding path program 115 times [2021-06-05 06:45:27,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:27,627 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638320518] [2021-06-05 06:45:27,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:27,654 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 06:45:27,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:27,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638320518] [2021-06-05 06:45:27,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638320518] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:27,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693512708] [2021-06-05 06:45:27,654 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 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 06:45:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:27,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:27,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:27,734 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 06:45:27,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693512708] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:27,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:27,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-05 06:45:27,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256340629] [2021-06-05 06:45:27,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:45:27,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:27,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:45:27,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:45:27,735 INFO L87 Difference]: Start difference. First operand 20722 states and 80960 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 06:45:27,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:27,959 INFO L93 Difference]: Finished difference Result 23493 states and 89383 transitions. [2021-06-05 06:45:27,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:45:27,959 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 06:45:27,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:28,008 INFO L225 Difference]: With dead ends: 23493 [2021-06-05 06:45:28,008 INFO L226 Difference]: Without dead ends: 23493 [2021-06-05 06:45:28,008 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 87.4ms TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:45:28,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23493 states. [2021-06-05 06:45:28,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23493 to 20225. [2021-06-05 06:45:28,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20225 states, 20224 states have (on average 3.895767405063291) internal successors, (78788), 20224 states have internal predecessors, (78788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:28,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20225 states to 20225 states and 78788 transitions. [2021-06-05 06:45:28,501 INFO L78 Accepts]: Start accepts. Automaton has 20225 states and 78788 transitions. Word has length 28 [2021-06-05 06:45:28,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:28,501 INFO L482 AbstractCegarLoop]: Abstraction has 20225 states and 78788 transitions. [2021-06-05 06:45:28,501 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 06:45:28,501 INFO L276 IsEmpty]: Start isEmpty. Operand 20225 states and 78788 transitions. [2021-06-05 06:45:28,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:28,532 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:28,532 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 06:45:28,732 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4089 [2021-06-05 06:45:28,732 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:28,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:28,732 INFO L82 PathProgramCache]: Analyzing trace with hash -708990263, now seen corresponding path program 116 times [2021-06-05 06:45:28,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:28,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661702004] [2021-06-05 06:45:28,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:28,767 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 06:45:28,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:28,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661702004] [2021-06-05 06:45:28,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661702004] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:28,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694998583] [2021-06-05 06:45:28,768 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 06:45:28,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:45:28,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:28,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:28,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:28,866 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 06:45:28,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694998583] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:28,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:28,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-06-05 06:45:28,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462791372] [2021-06-05 06:45:28,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:45:28,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:28,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:45:28,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:45:28,867 INFO L87 Difference]: Start difference. First operand 20225 states and 78788 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 06:45:29,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:29,745 INFO L93 Difference]: Finished difference Result 32091 states and 118994 transitions. [2021-06-05 06:45:29,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:45:29,746 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 06:45:29,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:29,818 INFO L225 Difference]: With dead ends: 32091 [2021-06-05 06:45:29,818 INFO L226 Difference]: Without dead ends: 32091 [2021-06-05 06:45:29,818 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 449.1ms TimeCoverageRelationStatistics Valid=720, Invalid=2472, Unknown=0, NotChecked=0, Total=3192 [2021-06-05 06:45:29,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32091 states. [2021-06-05 06:45:30,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32091 to 20291. [2021-06-05 06:45:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20291 states, 20290 states have (on average 3.8938393297190736) internal successors, (79006), 20290 states have internal predecessors, (79006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:30,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20291 states to 20291 states and 79006 transitions. [2021-06-05 06:45:30,301 INFO L78 Accepts]: Start accepts. Automaton has 20291 states and 79006 transitions. Word has length 28 [2021-06-05 06:45:30,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:30,301 INFO L482 AbstractCegarLoop]: Abstraction has 20291 states and 79006 transitions. [2021-06-05 06:45:30,301 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 06:45:30,301 INFO L276 IsEmpty]: Start isEmpty. Operand 20291 states and 79006 transitions. [2021-06-05 06:45:30,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:30,332 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:30,332 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 06:45:30,532 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4090,194 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:30,532 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:30,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:30,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1685309107, now seen corresponding path program 117 times [2021-06-05 06:45:30,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:30,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713168956] [2021-06-05 06:45:30,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:30,567 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 06:45:30,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:30,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713168956] [2021-06-05 06:45:30,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713168956] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:30,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590252461] [2021-06-05 06:45:30,567 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 06:45:30,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:45:30,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:30,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:30,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:30,676 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 06:45:30,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590252461] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:30,676 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:30,676 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 06:45:30,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397206338] [2021-06-05 06:45:30,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:45:30,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:30,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:45:30,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:45:30,677 INFO L87 Difference]: Start difference. First operand 20291 states and 79006 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 06:45:32,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:32,070 INFO L93 Difference]: Finished difference Result 40978 states and 150264 transitions. [2021-06-05 06:45:32,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-05 06:45:32,071 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 06:45:32,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:32,166 INFO L225 Difference]: With dead ends: 40978 [2021-06-05 06:45:32,166 INFO L226 Difference]: Without dead ends: 40978 [2021-06-05 06:45:32,167 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3102 ImplicationChecksByTransitivity, 808.6ms TimeCoverageRelationStatistics Valid=1548, Invalid=6284, Unknown=0, NotChecked=0, Total=7832 [2021-06-05 06:45:32,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40978 states. [2021-06-05 06:45:32,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40978 to 20294. [2021-06-05 06:45:32,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20294 states, 20293 states have (on average 3.895924703099591) internal successors, (79060), 20293 states have internal predecessors, (79060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:32,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20294 states to 20294 states and 79060 transitions. [2021-06-05 06:45:32,818 INFO L78 Accepts]: Start accepts. Automaton has 20294 states and 79060 transitions. Word has length 28 [2021-06-05 06:45:32,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:32,818 INFO L482 AbstractCegarLoop]: Abstraction has 20294 states and 79060 transitions. [2021-06-05 06:45:32,818 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 06:45:32,818 INFO L276 IsEmpty]: Start isEmpty. Operand 20294 states and 79060 transitions. [2021-06-05 06:45:32,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:32,851 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:32,851 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 06:45:33,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4091 [2021-06-05 06:45:33,052 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:33,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:33,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1118357027, now seen corresponding path program 118 times [2021-06-05 06:45:33,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:33,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691028737] [2021-06-05 06:45:33,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:33,086 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 06:45:33,086 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:33,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691028737] [2021-06-05 06:45:33,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691028737] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:33,087 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825190409] [2021-06-05 06:45:33,087 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 06:45:33,109 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:45:33,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:33,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:33,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:33,193 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 06:45:33,193 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825190409] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:33,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:33,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2021-06-05 06:45:33,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638113126] [2021-06-05 06:45:33,194 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:45:33,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:33,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:45:33,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:45:33,194 INFO L87 Difference]: Start difference. First operand 20294 states and 79060 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 06:45:34,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:34,536 INFO L93 Difference]: Finished difference Result 40582 states and 149545 transitions. [2021-06-05 06:45:34,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-06-05 06:45:34,536 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 06:45:34,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:34,631 INFO L225 Difference]: With dead ends: 40582 [2021-06-05 06:45:34,631 INFO L226 Difference]: Without dead ends: 40582 [2021-06-05 06:45:34,632 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2992 ImplicationChecksByTransitivity, 804.9ms TimeCoverageRelationStatistics Valid=1515, Invalid=6141, Unknown=0, NotChecked=0, Total=7656 [2021-06-05 06:45:34,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40582 states. [2021-06-05 06:45:35,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40582 to 20081. [2021-06-05 06:45:35,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20081 states, 20080 states have (on average 3.888147410358566) internal successors, (78074), 20080 states have internal predecessors, (78074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:35,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20081 states to 20081 states and 78074 transitions. [2021-06-05 06:45:35,214 INFO L78 Accepts]: Start accepts. Automaton has 20081 states and 78074 transitions. Word has length 28 [2021-06-05 06:45:35,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:35,214 INFO L482 AbstractCegarLoop]: Abstraction has 20081 states and 78074 transitions. [2021-06-05 06:45:35,214 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 06:45:35,214 INFO L276 IsEmpty]: Start isEmpty. Operand 20081 states and 78074 transitions. [2021-06-05 06:45:35,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:35,243 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:35,243 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 06:45:35,443 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4092,196 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:35,443 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:35,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:35,444 INFO L82 PathProgramCache]: Analyzing trace with hash -182218355, now seen corresponding path program 119 times [2021-06-05 06:45:35,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:35,444 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240552709] [2021-06-05 06:45:35,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:35,469 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 06:45:35,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:35,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240552709] [2021-06-05 06:45:35,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240552709] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:35,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980744599] [2021-06-05 06:45:35,470 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 06:45:35,493 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:45:35,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:35,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:45:35,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:35,546 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 06:45:35,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980744599] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:35,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:35,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-06-05 06:45:35,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850321433] [2021-06-05 06:45:35,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:45:35,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:35,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:45:35,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:45:35,547 INFO L87 Difference]: Start difference. First operand 20081 states and 78074 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 06:45:35,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:35,870 INFO L93 Difference]: Finished difference Result 29766 states and 111237 transitions. [2021-06-05 06:45:35,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 06:45:35,870 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 06:45:35,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:35,939 INFO L225 Difference]: With dead ends: 29766 [2021-06-05 06:45:35,939 INFO L226 Difference]: Without dead ends: 29749 [2021-06-05 06:45:35,939 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 96.8ms TimeCoverageRelationStatistics Valid=120, Invalid=222, Unknown=0, NotChecked=0, Total=342 [2021-06-05 06:45:35,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29749 states. [2021-06-05 06:45:36,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29749 to 20349. [2021-06-05 06:45:36,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20349 states, 20348 states have (on average 3.8934047572242974) internal successors, (79223), 20348 states have internal predecessors, (79223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:36,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20349 states to 20349 states and 79223 transitions. [2021-06-05 06:45:36,414 INFO L78 Accepts]: Start accepts. Automaton has 20349 states and 79223 transitions. Word has length 28 [2021-06-05 06:45:36,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:36,415 INFO L482 AbstractCegarLoop]: Abstraction has 20349 states and 79223 transitions. [2021-06-05 06:45:36,415 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 06:45:36,415 INFO L276 IsEmpty]: Start isEmpty. Operand 20349 states and 79223 transitions. [2021-06-05 06:45:36,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:36,449 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:36,449 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 06:45:36,649 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4093 [2021-06-05 06:45:36,649 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:36,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:36,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1325144395, now seen corresponding path program 120 times [2021-06-05 06:45:36,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:36,650 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520653938] [2021-06-05 06:45:36,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:36,676 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 06:45:36,676 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:36,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520653938] [2021-06-05 06:45:36,676 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520653938] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:36,676 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753090623] [2021-06-05 06:45:36,676 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 06:45:36,701 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:45:36,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:36,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:45:36,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:36,770 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 06:45:36,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753090623] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:36,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:36,770 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-06-05 06:45:36,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350574627] [2021-06-05 06:45:36,770 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:45:36,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:36,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:45:36,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:45:36,771 INFO L87 Difference]: Start difference. First operand 20349 states and 79223 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 06:45:37,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:37,064 INFO L93 Difference]: Finished difference Result 31558 states and 116818 transitions. [2021-06-05 06:45:37,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 06:45:37,065 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 06:45:37,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:37,140 INFO L225 Difference]: With dead ends: 31558 [2021-06-05 06:45:37,140 INFO L226 Difference]: Without dead ends: 31558 [2021-06-05 06:45:37,140 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 121.9ms TimeCoverageRelationStatistics Valid=135, Invalid=245, Unknown=0, NotChecked=0, Total=380 [2021-06-05 06:45:37,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31558 states. [2021-06-05 06:45:37,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31558 to 20016. [2021-06-05 06:45:37,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20016 states, 20015 states have (on average 3.8783912065950537) internal successors, (77626), 20015 states have internal predecessors, (77626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20016 states to 20016 states and 77626 transitions. [2021-06-05 06:45:37,613 INFO L78 Accepts]: Start accepts. Automaton has 20016 states and 77626 transitions. Word has length 28 [2021-06-05 06:45:37,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:37,613 INFO L482 AbstractCegarLoop]: Abstraction has 20016 states and 77626 transitions. [2021-06-05 06:45:37,613 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 06:45:37,613 INFO L276 IsEmpty]: Start isEmpty. Operand 20016 states and 77626 transitions. [2021-06-05 06:45:37,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:37,643 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:37,643 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 06:45:37,843 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4094 [2021-06-05 06:45:37,843 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:37,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:37,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1623141335, now seen corresponding path program 121 times [2021-06-05 06:45:37,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:37,844 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544576241] [2021-06-05 06:45:37,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:37,879 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 06:45:37,879 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:37,879 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544576241] [2021-06-05 06:45:37,879 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544576241] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:37,880 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330213602] [2021-06-05 06:45:37,880 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 06:45:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:37,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:37,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:37,971 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 06:45:37,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330213602] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:37,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:37,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:45:37,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123372327] [2021-06-05 06:45:37,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:45:37,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:37,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:45:37,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:45:37,972 INFO L87 Difference]: Start difference. First operand 20016 states and 77626 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 06:45:38,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:38,728 INFO L93 Difference]: Finished difference Result 29601 states and 110146 transitions. [2021-06-05 06:45:38,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-06-05 06:45:38,728 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 06:45:38,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:38,797 INFO L225 Difference]: With dead ends: 29601 [2021-06-05 06:45:38,798 INFO L226 Difference]: Without dead ends: 29601 [2021-06-05 06:45:38,798 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 819 ImplicationChecksByTransitivity, 375.1ms TimeCoverageRelationStatistics Valid=589, Invalid=1961, Unknown=0, NotChecked=0, Total=2550 [2021-06-05 06:45:38,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29601 states. [2021-06-05 06:45:39,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29601 to 20064. [2021-06-05 06:45:39,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20064 states, 20063 states have (on average 3.8771868613866323) internal successors, (77788), 20063 states have internal predecessors, (77788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:39,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20064 states to 20064 states and 77788 transitions. [2021-06-05 06:45:39,365 INFO L78 Accepts]: Start accepts. Automaton has 20064 states and 77788 transitions. Word has length 28 [2021-06-05 06:45:39,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:39,365 INFO L482 AbstractCegarLoop]: Abstraction has 20064 states and 77788 transitions. [2021-06-05 06:45:39,365 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 06:45:39,365 INFO L276 IsEmpty]: Start isEmpty. Operand 20064 states and 77788 transitions. [2021-06-05 06:45:39,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:39,395 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:39,395 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 06:45:39,595 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4095,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:39,595 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:39,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:39,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1886911867, now seen corresponding path program 122 times [2021-06-05 06:45:39,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:39,596 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539905790] [2021-06-05 06:45:39,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:39,633 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 06:45:39,633 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:39,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539905790] [2021-06-05 06:45:39,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539905790] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:39,633 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649376602] [2021-06-05 06:45:39,634 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 06:45:39,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:45:39,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:39,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:39,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:39,724 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 06:45:39,724 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649376602] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:39,724 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:39,724 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:45:39,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860214695] [2021-06-05 06:45:39,725 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:45:39,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:39,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:45:39,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:45:39,725 INFO L87 Difference]: Start difference. First operand 20064 states and 77788 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 06:45:40,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:40,662 INFO L93 Difference]: Finished difference Result 31138 states and 114558 transitions. [2021-06-05 06:45:40,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-06-05 06:45:40,663 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 06:45:40,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:40,733 INFO L225 Difference]: With dead ends: 31138 [2021-06-05 06:45:40,733 INFO L226 Difference]: Without dead ends: 31138 [2021-06-05 06:45:40,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 512.0ms TimeCoverageRelationStatistics Valid=928, Invalid=3494, Unknown=0, NotChecked=0, Total=4422 [2021-06-05 06:45:40,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31138 states. [2021-06-05 06:45:41,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31138 to 20620. [2021-06-05 06:45:41,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20620 states, 20619 states have (on average 3.855958096900917) internal successors, (79506), 20619 states have internal predecessors, (79506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:41,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20620 states to 20620 states and 79506 transitions. [2021-06-05 06:45:41,246 INFO L78 Accepts]: Start accepts. Automaton has 20620 states and 79506 transitions. Word has length 28 [2021-06-05 06:45:41,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:41,246 INFO L482 AbstractCegarLoop]: Abstraction has 20620 states and 79506 transitions. [2021-06-05 06:45:41,246 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 06:45:41,246 INFO L276 IsEmpty]: Start isEmpty. Operand 20620 states and 79506 transitions. [2021-06-05 06:45:41,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:41,279 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:41,279 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 06:45:41,479 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4096 [2021-06-05 06:45:41,479 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:41,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:41,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1931733009, now seen corresponding path program 123 times [2021-06-05 06:45:41,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:41,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226612008] [2021-06-05 06:45:41,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:41,513 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 06:45:41,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:41,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226612008] [2021-06-05 06:45:41,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226612008] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:41,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696612706] [2021-06-05 06:45:41,513 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 06:45:41,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:45:41,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:41,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:41,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:41,598 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 06:45:41,599 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696612706] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:41,599 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:41,599 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 14 [2021-06-05 06:45:41,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830204904] [2021-06-05 06:45:41,599 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:45:41,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:41,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:45:41,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:45:41,599 INFO L87 Difference]: Start difference. First operand 20620 states and 79506 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 06:45:42,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:42,377 INFO L93 Difference]: Finished difference Result 30264 states and 112255 transitions. [2021-06-05 06:45:42,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 06:45:42,378 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 06:45:42,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:42,443 INFO L225 Difference]: With dead ends: 30264 [2021-06-05 06:45:42,444 INFO L226 Difference]: Without dead ends: 30260 [2021-06-05 06:45:42,444 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1118 ImplicationChecksByTransitivity, 415.7ms TimeCoverageRelationStatistics Valid=736, Invalid=2570, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 06:45:42,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30260 states. [2021-06-05 06:45:42,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30260 to 20512. [2021-06-05 06:45:42,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20512 states, 20511 states have (on average 3.858612451855102) internal successors, (79144), 20511 states have internal predecessors, (79144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:43,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20512 states to 20512 states and 79144 transitions. [2021-06-05 06:45:43,027 INFO L78 Accepts]: Start accepts. Automaton has 20512 states and 79144 transitions. Word has length 28 [2021-06-05 06:45:43,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:43,027 INFO L482 AbstractCegarLoop]: Abstraction has 20512 states and 79144 transitions. [2021-06-05 06:45:43,027 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 06:45:43,027 INFO L276 IsEmpty]: Start isEmpty. Operand 20512 states and 79144 transitions. [2021-06-05 06:45:43,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:43,059 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:43,059 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 06:45:43,259 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 201 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4097 [2021-06-05 06:45:43,259 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:43,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:43,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1066349071, now seen corresponding path program 124 times [2021-06-05 06:45:43,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:43,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78572589] [2021-06-05 06:45:43,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:43,285 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 06:45:43,286 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:43,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78572589] [2021-06-05 06:45:43,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78572589] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:43,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764727425] [2021-06-05 06:45:43,286 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 06:45:43,308 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:45:43,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:43,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:45:43,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:43,356 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 06:45:43,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764727425] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:43,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:43,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-06-05 06:45:43,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307573271] [2021-06-05 06:45:43,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:45:43,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:43,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:45:43,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:45:43,357 INFO L87 Difference]: Start difference. First operand 20512 states and 79144 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 06:45:43,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:43,574 INFO L93 Difference]: Finished difference Result 25599 states and 95352 transitions. [2021-06-05 06:45:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 06:45:43,574 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 06:45:43,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:43,631 INFO L225 Difference]: With dead ends: 25599 [2021-06-05 06:45:43,631 INFO L226 Difference]: Without dead ends: 25599 [2021-06-05 06:45:43,632 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 90.0ms TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:45:43,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25599 states. [2021-06-05 06:45:43,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25599 to 20822. [2021-06-05 06:45:43,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20822 states, 20821 states have (on average 3.8498150905335957) internal successors, (80157), 20821 states have internal predecessors, (80157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:44,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20822 states to 20822 states and 80157 transitions. [2021-06-05 06:45:44,032 INFO L78 Accepts]: Start accepts. Automaton has 20822 states and 80157 transitions. Word has length 28 [2021-06-05 06:45:44,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:44,032 INFO L482 AbstractCegarLoop]: Abstraction has 20822 states and 80157 transitions. [2021-06-05 06:45:44,032 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 06:45:44,032 INFO L276 IsEmpty]: Start isEmpty. Operand 20822 states and 80157 transitions. [2021-06-05 06:45:44,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:44,063 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:44,063 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 06:45:44,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 202 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4098 [2021-06-05 06:45:44,272 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:44,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:44,272 INFO L82 PathProgramCache]: Analyzing trace with hash -136149327, now seen corresponding path program 125 times [2021-06-05 06:45:44,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:44,272 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174658715] [2021-06-05 06:45:44,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:44,306 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 06:45:44,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:44,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174658715] [2021-06-05 06:45:44,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174658715] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:44,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033569104] [2021-06-05 06:45:44,306 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 06:45:44,328 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:45:44,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:44,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:44,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:44,387 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 06:45:44,388 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033569104] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:44,388 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:44,388 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 06:45:44,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127950018] [2021-06-05 06:45:44,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:45:44,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:44,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:45:44,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:45:44,388 INFO L87 Difference]: Start difference. First operand 20822 states and 80157 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 06:45:45,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:45,152 INFO L93 Difference]: Finished difference Result 31377 states and 115045 transitions. [2021-06-05 06:45:45,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:45:45,153 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 06:45:45,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:45,226 INFO L225 Difference]: With dead ends: 31377 [2021-06-05 06:45:45,226 INFO L226 Difference]: Without dead ends: 31377 [2021-06-05 06:45:45,227 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 406.7ms TimeCoverageRelationStatistics Valid=684, Invalid=2396, Unknown=0, NotChecked=0, Total=3080 [2021-06-05 06:45:45,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31377 states. [2021-06-05 06:45:45,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31377 to 22482. [2021-06-05 06:45:45,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22482 states, 22481 states have (on average 3.8615719941283753) internal successors, (86812), 22481 states have internal predecessors, (86812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:45,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22482 states to 22482 states and 86812 transitions. [2021-06-05 06:45:45,755 INFO L78 Accepts]: Start accepts. Automaton has 22482 states and 86812 transitions. Word has length 28 [2021-06-05 06:45:45,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:45,755 INFO L482 AbstractCegarLoop]: Abstraction has 22482 states and 86812 transitions. [2021-06-05 06:45:45,755 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 06:45:45,755 INFO L276 IsEmpty]: Start isEmpty. Operand 22482 states and 86812 transitions. [2021-06-05 06:45:45,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:45,947 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:45,947 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 06:45:46,147 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 203 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4099 [2021-06-05 06:45:46,147 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:46,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:46,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1975921655, now seen corresponding path program 126 times [2021-06-05 06:45:46,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:46,148 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236389544] [2021-06-05 06:45:46,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:46,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:46,185 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 06:45:46,186 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:46,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236389544] [2021-06-05 06:45:46,186 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236389544] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:46,186 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345462556] [2021-06-05 06:45:46,186 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 06:45:46,212 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:45:46,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:46,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:46,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:46,279 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 06:45:46,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345462556] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:46,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:46,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 06:45:46,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426441256] [2021-06-05 06:45:46,280 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:45:46,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:46,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:45:46,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:45:46,280 INFO L87 Difference]: Start difference. First operand 22482 states and 86812 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 06:45:47,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:47,027 INFO L93 Difference]: Finished difference Result 29625 states and 110530 transitions. [2021-06-05 06:45:47,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:45:47,027 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 06:45:47,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:47,102 INFO L225 Difference]: With dead ends: 29625 [2021-06-05 06:45:47,102 INFO L226 Difference]: Without dead ends: 29613 [2021-06-05 06:45:47,103 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 365.1ms TimeCoverageRelationStatistics Valid=503, Invalid=1849, Unknown=0, NotChecked=0, Total=2352 [2021-06-05 06:45:47,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29613 states. [2021-06-05 06:45:47,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29613 to 22654. [2021-06-05 06:45:47,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22654 states, 22653 states have (on average 3.8557365470357126) internal successors, (87344), 22653 states have internal predecessors, (87344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:47,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22654 states to 22654 states and 87344 transitions. [2021-06-05 06:45:47,689 INFO L78 Accepts]: Start accepts. Automaton has 22654 states and 87344 transitions. Word has length 28 [2021-06-05 06:45:47,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:47,689 INFO L482 AbstractCegarLoop]: Abstraction has 22654 states and 87344 transitions. [2021-06-05 06:45:47,689 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 06:45:47,689 INFO L276 IsEmpty]: Start isEmpty. Operand 22654 states and 87344 transitions. [2021-06-05 06:45:47,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:47,724 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:47,724 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 06:45:47,925 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4100 [2021-06-05 06:45:47,925 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:47,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:47,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1688262325, now seen corresponding path program 127 times [2021-06-05 06:45:47,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:47,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4217132] [2021-06-05 06:45:47,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:47,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:47,961 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 06:45:47,962 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:47,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4217132] [2021-06-05 06:45:47,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4217132] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:47,962 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326208918] [2021-06-05 06:45:47,962 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 06:45:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:47,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 06:45:47,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:48,043 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 06:45:48,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326208918] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:48,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:48,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-06-05 06:45:48,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122994019] [2021-06-05 06:45:48,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-05 06:45:48,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:48,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-05 06:45:48,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-06-05 06:45:48,044 INFO L87 Difference]: Start difference. First operand 22654 states and 87344 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 06:45:48,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:48,320 INFO L93 Difference]: Finished difference Result 26104 states and 98956 transitions. [2021-06-05 06:45:48,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 06:45:48,321 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 06:45:48,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:48,386 INFO L225 Difference]: With dead ends: 26104 [2021-06-05 06:45:48,386 INFO L226 Difference]: Without dead ends: 26104 [2021-06-05 06:45:48,387 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 108.6ms TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-06-05 06:45:48,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26104 states. [2021-06-05 06:45:48,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26104 to 23491. [2021-06-05 06:45:48,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23491 states, 23490 states have (on average 3.8498084291187737) internal successors, (90432), 23490 states have internal predecessors, (90432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:48,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23491 states to 23491 states and 90432 transitions. [2021-06-05 06:45:48,874 INFO L78 Accepts]: Start accepts. Automaton has 23491 states and 90432 transitions. Word has length 28 [2021-06-05 06:45:48,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:48,874 INFO L482 AbstractCegarLoop]: Abstraction has 23491 states and 90432 transitions. [2021-06-05 06:45:48,874 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 06:45:48,874 INFO L276 IsEmpty]: Start isEmpty. Operand 23491 states and 90432 transitions. [2021-06-05 06:45:48,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:48,912 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:48,912 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 06:45:49,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4101,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:49,117 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:49,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:49,117 INFO L82 PathProgramCache]: Analyzing trace with hash 2131923893, now seen corresponding path program 128 times [2021-06-05 06:45:49,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:49,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243398452] [2021-06-05 06:45:49,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:49,152 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 06:45:49,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:49,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243398452] [2021-06-05 06:45:49,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243398452] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:49,153 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728349737] [2021-06-05 06:45:49,153 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 06:45:49,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:45:49,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:49,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:49,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:49,258 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 06:45:49,258 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728349737] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:49,258 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:49,258 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 06:45:49,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586353315] [2021-06-05 06:45:49,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:45:49,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:49,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:45:49,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:45:49,259 INFO L87 Difference]: Start difference. First operand 23491 states and 90432 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 06:45:50,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:50,005 INFO L93 Difference]: Finished difference Result 31312 states and 115741 transitions. [2021-06-05 06:45:50,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 06:45:50,005 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 06:45:50,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:50,076 INFO L225 Difference]: With dead ends: 31312 [2021-06-05 06:45:50,076 INFO L226 Difference]: Without dead ends: 31312 [2021-06-05 06:45:50,077 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 408.3ms TimeCoverageRelationStatistics Valid=627, Invalid=2235, Unknown=0, NotChecked=0, Total=2862 [2021-06-05 06:45:50,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31312 states. [2021-06-05 06:45:50,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31312 to 24677. [2021-06-05 06:45:50,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24677 states, 24676 states have (on average 3.8184875992867564) internal successors, (94225), 24676 states have internal predecessors, (94225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:50,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24677 states to 24677 states and 94225 transitions. [2021-06-05 06:45:50,735 INFO L78 Accepts]: Start accepts. Automaton has 24677 states and 94225 transitions. Word has length 28 [2021-06-05 06:45:50,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:50,735 INFO L482 AbstractCegarLoop]: Abstraction has 24677 states and 94225 transitions. [2021-06-05 06:45:50,735 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 06:45:50,735 INFO L276 IsEmpty]: Start isEmpty. Operand 24677 states and 94225 transitions. [2021-06-05 06:45:50,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:50,769 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:50,769 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 06:45:50,970 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4102,206 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:50,970 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:50,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:50,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1422950451, now seen corresponding path program 129 times [2021-06-05 06:45:50,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:50,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357849734] [2021-06-05 06:45:50,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:50,999 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 06:45:51,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:51,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357849734] [2021-06-05 06:45:51,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357849734] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:51,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562109996] [2021-06-05 06:45:51,000 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 06:45:51,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-05 06:45:51,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:51,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:51,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:51,073 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 06:45:51,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562109996] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:51,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:51,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:45:51,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637098128] [2021-06-05 06:45:51,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:45:51,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:51,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:45:51,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:45:51,074 INFO L87 Difference]: Start difference. First operand 24677 states and 94225 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 06:45:51,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:51,598 INFO L93 Difference]: Finished difference Result 30413 states and 113358 transitions. [2021-06-05 06:45:51,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:45:51,598 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 06:45:51,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:51,660 INFO L225 Difference]: With dead ends: 30413 [2021-06-05 06:45:51,660 INFO L226 Difference]: Without dead ends: 30405 [2021-06-05 06:45:51,661 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 260.1ms TimeCoverageRelationStatistics Valid=394, Invalid=1412, Unknown=0, NotChecked=0, Total=1806 [2021-06-05 06:45:51,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30405 states. [2021-06-05 06:45:52,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30405 to 24499. [2021-06-05 06:45:52,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24499 states, 24498 states have (on average 3.824557106702588) internal successors, (93694), 24498 states have internal predecessors, (93694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:52,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24499 states to 24499 states and 93694 transitions. [2021-06-05 06:45:52,190 INFO L78 Accepts]: Start accepts. Automaton has 24499 states and 93694 transitions. Word has length 28 [2021-06-05 06:45:52,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:52,190 INFO L482 AbstractCegarLoop]: Abstraction has 24499 states and 93694 transitions. [2021-06-05 06:45:52,190 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 06:45:52,190 INFO L276 IsEmpty]: Start isEmpty. Operand 24499 states and 93694 transitions. [2021-06-05 06:45:52,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:52,225 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:52,225 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 06:45:52,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4103,207 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:52,425 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:52,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:52,425 INFO L82 PathProgramCache]: Analyzing trace with hash 27046477, now seen corresponding path program 130 times [2021-06-05 06:45:52,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:52,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610297336] [2021-06-05 06:45:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:52,458 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 06:45:52,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:52,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610297336] [2021-06-05 06:45:52,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610297336] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:52,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778557171] [2021-06-05 06:45:52,458 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 06:45:52,479 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:45:52,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:52,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:52,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:52,545 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 06:45:52,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778557171] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:52,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:52,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:45:52,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657095013] [2021-06-05 06:45:52,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:45:52,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:52,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:45:52,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:45:52,546 INFO L87 Difference]: Start difference. First operand 24499 states and 93694 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 06:45:53,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:53,241 INFO L93 Difference]: Finished difference Result 32257 states and 118986 transitions. [2021-06-05 06:45:53,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-05 06:45:53,241 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 06:45:53,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:53,320 INFO L225 Difference]: With dead ends: 32257 [2021-06-05 06:45:53,320 INFO L226 Difference]: Without dead ends: 32257 [2021-06-05 06:45:53,321 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 362.6ms TimeCoverageRelationStatistics Valid=566, Invalid=2086, Unknown=0, NotChecked=0, Total=2652 [2021-06-05 06:45:53,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32257 states. [2021-06-05 06:45:53,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32257 to 25533. [2021-06-05 06:45:53,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25533 states, 25532 states have (on average 3.8001331662227793) internal successors, (97025), 25532 states have internal predecessors, (97025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:53,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25533 states to 25533 states and 97025 transitions. [2021-06-05 06:45:53,945 INFO L78 Accepts]: Start accepts. Automaton has 25533 states and 97025 transitions. Word has length 28 [2021-06-05 06:45:53,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:53,945 INFO L482 AbstractCegarLoop]: Abstraction has 25533 states and 97025 transitions. [2021-06-05 06:45:53,945 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 06:45:53,945 INFO L276 IsEmpty]: Start isEmpty. Operand 25533 states and 97025 transitions. [2021-06-05 06:45:53,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:53,986 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:53,986 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 06:45:54,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4104,208 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:54,186 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:54,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:54,187 INFO L82 PathProgramCache]: Analyzing trace with hash 415101939, now seen corresponding path program 131 times [2021-06-05 06:45:54,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:54,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770925480] [2021-06-05 06:45:54,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:54,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:54,217 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 06:45:54,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:54,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770925480] [2021-06-05 06:45:54,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770925480] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:54,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914071359] [2021-06-05 06:45:54,218 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 06:45:54,240 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:45:54,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:54,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:54,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:54,288 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 06:45:54,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914071359] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:54,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:54,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-05 06:45:54,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776632329] [2021-06-05 06:45:54,288 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:45:54,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:54,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:45:54,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:45:54,289 INFO L87 Difference]: Start difference. First operand 25533 states and 97025 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 06:45:54,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:54,717 INFO L93 Difference]: Finished difference Result 32571 states and 122068 transitions. [2021-06-05 06:45:54,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:45:54,717 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 06:45:54,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:54,801 INFO L225 Difference]: With dead ends: 32571 [2021-06-05 06:45:54,801 INFO L226 Difference]: Without dead ends: 32571 [2021-06-05 06:45:54,801 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 210.3ms TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2021-06-05 06:45:54,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32571 states. [2021-06-05 06:45:55,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32571 to 29359. [2021-06-05 06:45:55,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29359 states, 29358 states have (on average 3.814599087131276) internal successors, (111989), 29358 states have internal predecessors, (111989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:55,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29359 states to 29359 states and 111989 transitions. [2021-06-05 06:45:55,471 INFO L78 Accepts]: Start accepts. Automaton has 29359 states and 111989 transitions. Word has length 28 [2021-06-05 06:45:55,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:55,471 INFO L482 AbstractCegarLoop]: Abstraction has 29359 states and 111989 transitions. [2021-06-05 06:45:55,471 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 06:45:55,471 INFO L276 IsEmpty]: Start isEmpty. Operand 29359 states and 111989 transitions. [2021-06-05 06:45:55,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:55,522 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:55,522 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 06:45:55,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4105,209 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:55,723 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:55,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:55,723 INFO L82 PathProgramCache]: Analyzing trace with hash -17774665, now seen corresponding path program 132 times [2021-06-05 06:45:55,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:55,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317214183] [2021-06-05 06:45:55,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:55,752 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 06:45:55,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:55,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317214183] [2021-06-05 06:45:55,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317214183] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:55,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849520024] [2021-06-05 06:45:55,752 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 06:45:55,782 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:45:55,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:55,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:55,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:55,834 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 06:45:55,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849520024] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:55,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:55,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:45:55,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059605263] [2021-06-05 06:45:55,834 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:45:55,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:55,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:45:55,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:45:55,835 INFO L87 Difference]: Start difference. First operand 29359 states and 111989 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 06:45:56,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:56,405 INFO L93 Difference]: Finished difference Result 35770 states and 133277 transitions. [2021-06-05 06:45:56,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-06-05 06:45:56,405 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 06:45:56,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:56,495 INFO L225 Difference]: With dead ends: 35770 [2021-06-05 06:45:56,496 INFO L226 Difference]: Without dead ends: 35762 [2021-06-05 06:45:56,496 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 250.0ms TimeCoverageRelationStatistics Valid=354, Invalid=1286, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:45:56,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35762 states. [2021-06-05 06:45:57,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35762 to 29325. [2021-06-05 06:45:57,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29325 states, 29324 states have (on average 3.8150320556540716) internal successors, (111872), 29324 states have internal predecessors, (111872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:57,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29325 states to 29325 states and 111872 transitions. [2021-06-05 06:45:57,224 INFO L78 Accepts]: Start accepts. Automaton has 29325 states and 111872 transitions. Word has length 28 [2021-06-05 06:45:57,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:57,225 INFO L482 AbstractCegarLoop]: Abstraction has 29325 states and 111872 transitions. [2021-06-05 06:45:57,225 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 06:45:57,225 INFO L276 IsEmpty]: Start isEmpty. Operand 29325 states and 111872 transitions. [2021-06-05 06:45:57,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:57,276 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:57,276 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 06:45:57,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4106,210 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:57,477 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:57,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:57,477 INFO L82 PathProgramCache]: Analyzing trace with hash -913595481, now seen corresponding path program 133 times [2021-06-05 06:45:57,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:57,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634226310] [2021-06-05 06:45:57,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:57,507 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 06:45:57,507 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:57,507 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634226310] [2021-06-05 06:45:57,508 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634226310] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:57,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730285555] [2021-06-05 06:45:57,508 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 06:45:57,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:57,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:45:57,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:57,575 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 06:45:57,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730285555] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:57,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:57,576 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-06-05 06:45:57,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700220824] [2021-06-05 06:45:57,576 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:45:57,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:57,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:45:57,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:45:57,576 INFO L87 Difference]: Start difference. First operand 29325 states and 111872 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 06:45:57,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:57,986 INFO L93 Difference]: Finished difference Result 32332 states and 121875 transitions. [2021-06-05 06:45:57,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:45:57,987 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 06:45:57,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:58,066 INFO L225 Difference]: With dead ends: 32332 [2021-06-05 06:45:58,067 INFO L226 Difference]: Without dead ends: 32332 [2021-06-05 06:45:58,067 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 169.7ms TimeCoverageRelationStatistics Valid=221, Invalid=535, Unknown=0, NotChecked=0, Total=756 [2021-06-05 06:45:58,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32332 states. [2021-06-05 06:45:58,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32332 to 29928. [2021-06-05 06:45:58,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29928 states, 29927 states have (on average 3.812978247067865) internal successors, (114111), 29927 states have internal predecessors, (114111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:45:58,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29928 states to 29928 states and 114111 transitions. [2021-06-05 06:45:58,805 INFO L78 Accepts]: Start accepts. Automaton has 29928 states and 114111 transitions. Word has length 28 [2021-06-05 06:45:58,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:45:58,805 INFO L482 AbstractCegarLoop]: Abstraction has 29928 states and 114111 transitions. [2021-06-05 06:45:58,805 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 06:45:58,805 INFO L276 IsEmpty]: Start isEmpty. Operand 29928 states and 114111 transitions. [2021-06-05 06:45:58,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:45:58,852 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:45:58,852 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 06:45:59,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4107,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:45:59,052 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:45:59,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:45:59,053 INFO L82 PathProgramCache]: Analyzing trace with hash 579561993, now seen corresponding path program 134 times [2021-06-05 06:45:59,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:45:59,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695169282] [2021-06-05 06:45:59,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:45:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:45:59,085 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 06:45:59,085 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:45:59,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695169282] [2021-06-05 06:45:59,085 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695169282] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:59,085 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835881312] [2021-06-05 06:45:59,085 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 06:45:59,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:45:59,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:45:59,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:45:59,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:45:59,161 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 06:45:59,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835881312] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:45:59,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:45:59,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-06-05 06:45:59,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847024405] [2021-06-05 06:45:59,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:45:59,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:45:59,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:45:59,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:45:59,162 INFO L87 Difference]: Start difference. First operand 29928 states and 114111 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 06:45:59,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:45:59,736 INFO L93 Difference]: Finished difference Result 36766 states and 136935 transitions. [2021-06-05 06:45:59,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:45:59,736 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 06:45:59,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:45:59,819 INFO L225 Difference]: With dead ends: 36766 [2021-06-05 06:45:59,820 INFO L226 Difference]: Without dead ends: 36742 [2021-06-05 06:45:59,820 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 256.8ms TimeCoverageRelationStatistics Valid=348, Invalid=1292, Unknown=0, NotChecked=0, Total=1640 [2021-06-05 06:45:59,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36742 states. [2021-06-05 06:46:00,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36742 to 30100. [2021-06-05 06:46:00,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30100 states, 30099 states have (on average 3.8089305292534634) internal successors, (114645), 30099 states have internal predecessors, (114645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:00,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30100 states to 30100 states and 114645 transitions. [2021-06-05 06:46:00,881 INFO L78 Accepts]: Start accepts. Automaton has 30100 states and 114645 transitions. Word has length 28 [2021-06-05 06:46:00,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:00,881 INFO L482 AbstractCegarLoop]: Abstraction has 30100 states and 114645 transitions. [2021-06-05 06:46:00,881 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 06:46:00,881 INFO L276 IsEmpty]: Start isEmpty. Operand 30100 states and 114645 transitions. [2021-06-05 06:46:00,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:00,936 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:00,936 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 06:46:01,136 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4108,212 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:01,137 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:01,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:01,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1271447701, now seen corresponding path program 135 times [2021-06-05 06:46:01,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:01,137 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424788610] [2021-06-05 06:46:01,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:01,175 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 06:46:01,176 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:01,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424788610] [2021-06-05 06:46:01,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424788610] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:01,176 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134434446] [2021-06-05 06:46:01,176 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 06:46:01,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:46:01,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:01,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:46:01,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:01,269 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 06:46:01,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134434446] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:01,270 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:01,270 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2021-06-05 06:46:01,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888371662] [2021-06-05 06:46:01,270 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:46:01,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:01,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:46:01,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:46:01,271 INFO L87 Difference]: Start difference. First operand 30100 states and 114645 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 06:46:01,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:01,970 INFO L93 Difference]: Finished difference Result 32808 states and 123611 transitions. [2021-06-05 06:46:01,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:46:01,981 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 06:46:01,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:02,068 INFO L225 Difference]: With dead ends: 32808 [2021-06-05 06:46:02,068 INFO L226 Difference]: Without dead ends: 32808 [2021-06-05 06:46:02,068 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 214.9ms TimeCoverageRelationStatistics Valid=273, Invalid=657, Unknown=0, NotChecked=0, Total=930 [2021-06-05 06:46:02,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32808 states. [2021-06-05 06:46:02,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32808 to 30021. [2021-06-05 06:46:02,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30021 states, 30020 states have (on average 3.8105929380413057) internal successors, (114394), 30020 states have internal predecessors, (114394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:02,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30021 states to 30021 states and 114394 transitions. [2021-06-05 06:46:02,739 INFO L78 Accepts]: Start accepts. Automaton has 30021 states and 114394 transitions. Word has length 28 [2021-06-05 06:46:02,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:02,739 INFO L482 AbstractCegarLoop]: Abstraction has 30021 states and 114394 transitions. [2021-06-05 06:46:02,739 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 06:46:02,739 INFO L276 IsEmpty]: Start isEmpty. Operand 30021 states and 114394 transitions. [2021-06-05 06:46:02,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:02,786 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:02,786 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 06:46:02,986 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4109,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:02,986 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:02,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:02,987 INFO L82 PathProgramCache]: Analyzing trace with hash -412931571, now seen corresponding path program 136 times [2021-06-05 06:46:02,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:02,987 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292723690] [2021-06-05 06:46:02,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:03,022 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 06:46:03,023 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:03,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292723690] [2021-06-05 06:46:03,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292723690] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:03,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052982971] [2021-06-05 06:46:03,023 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 06:46:03,045 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:46:03,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:03,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:03,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:03,233 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 06:46:03,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052982971] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:03,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:03,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-06-05 06:46:03,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781673165] [2021-06-05 06:46:03,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:46:03,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:03,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:46:03,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:46:03,234 INFO L87 Difference]: Start difference. First operand 30021 states and 114394 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 06:46:03,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:03,948 INFO L93 Difference]: Finished difference Result 36684 states and 136681 transitions. [2021-06-05 06:46:03,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:46:03,948 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 06:46:03,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:04,033 INFO L225 Difference]: With dead ends: 36684 [2021-06-05 06:46:04,033 INFO L226 Difference]: Without dead ends: 36644 [2021-06-05 06:46:04,033 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 430.7ms TimeCoverageRelationStatistics Valid=425, Invalid=1645, Unknown=0, NotChecked=0, Total=2070 [2021-06-05 06:46:04,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36644 states. [2021-06-05 06:46:04,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36644 to 30177. [2021-06-05 06:46:04,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30177 states, 30176 states have (on average 3.806733828207847) internal successors, (114872), 30176 states have internal predecessors, (114872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:04,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30177 states to 30177 states and 114872 transitions. [2021-06-05 06:46:04,972 INFO L78 Accepts]: Start accepts. Automaton has 30177 states and 114872 transitions. Word has length 28 [2021-06-05 06:46:04,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:04,972 INFO L482 AbstractCegarLoop]: Abstraction has 30177 states and 114872 transitions. [2021-06-05 06:46:04,972 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 06:46:04,972 INFO L276 IsEmpty]: Start isEmpty. Operand 30177 states and 114872 transitions. [2021-06-05 06:46:05,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:05,030 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:05,030 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 06:46:05,230 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 214 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4110 [2021-06-05 06:46:05,230 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:05,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:05,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1625942477, now seen corresponding path program 137 times [2021-06-05 06:46:05,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:05,231 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485434264] [2021-06-05 06:46:05,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:05,260 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 06:46:05,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:05,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485434264] [2021-06-05 06:46:05,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485434264] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:05,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578490998] [2021-06-05 06:46:05,260 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 06:46:05,281 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:46:05,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:05,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:05,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:05,373 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 06:46:05,373 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578490998] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:05,373 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:05,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:46:05,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173700280] [2021-06-05 06:46:05,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:46:05,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:05,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:46:05,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:46:05,374 INFO L87 Difference]: Start difference. First operand 30177 states and 114872 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 06:46:06,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:06,783 INFO L93 Difference]: Finished difference Result 68717 states and 253109 transitions. [2021-06-05 06:46:06,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 06:46:06,783 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 06:46:06,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:06,992 INFO L225 Difference]: With dead ends: 68717 [2021-06-05 06:46:06,992 INFO L226 Difference]: Without dead ends: 68717 [2021-06-05 06:46:06,992 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 719.1ms TimeCoverageRelationStatistics Valid=1088, Invalid=3742, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:46:07,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68717 states. [2021-06-05 06:46:08,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68717 to 37968. [2021-06-05 06:46:08,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37968 states, 37967 states have (on average 3.8875075723654753) internal successors, (147597), 37967 states have internal predecessors, (147597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:08,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37968 states to 37968 states and 147597 transitions. [2021-06-05 06:46:08,546 INFO L78 Accepts]: Start accepts. Automaton has 37968 states and 147597 transitions. Word has length 28 [2021-06-05 06:46:08,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:08,546 INFO L482 AbstractCegarLoop]: Abstraction has 37968 states and 147597 transitions. [2021-06-05 06:46:08,546 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 06:46:08,546 INFO L276 IsEmpty]: Start isEmpty. Operand 37968 states and 147597 transitions. [2021-06-05 06:46:08,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:08,606 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:08,606 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 06:46:08,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 215 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4111 [2021-06-05 06:46:08,806 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:08,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:08,807 INFO L82 PathProgramCache]: Analyzing trace with hash -2102072739, now seen corresponding path program 138 times [2021-06-05 06:46:08,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:08,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474731161] [2021-06-05 06:46:08,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:08,836 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 06:46:08,836 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:08,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474731161] [2021-06-05 06:46:08,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474731161] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:08,836 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176703994] [2021-06-05 06:46:08,836 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 06:46:08,859 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:46:08,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:08,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:08,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:08,950 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 06:46:08,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176703994] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:08,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:08,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:46:08,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118039158] [2021-06-05 06:46:08,951 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:46:08,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:08,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:46:08,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:46:08,951 INFO L87 Difference]: Start difference. First operand 37968 states and 147597 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 06:46:09,726 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-06-05 06:46:10,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:10,326 INFO L93 Difference]: Finished difference Result 68090 states and 251448 transitions. [2021-06-05 06:46:10,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 06:46:10,326 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 06:46:10,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:10,512 INFO L225 Difference]: With dead ends: 68090 [2021-06-05 06:46:10,512 INFO L226 Difference]: Without dead ends: 68090 [2021-06-05 06:46:10,513 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 759.9ms TimeCoverageRelationStatistics Valid=1088, Invalid=3742, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:46:10,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68090 states. [2021-06-05 06:46:11,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68090 to 37965. [2021-06-05 06:46:11,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37965 states, 37964 states have (on average 3.8874460014750816) internal successors, (147583), 37964 states have internal predecessors, (147583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:11,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37965 states to 37965 states and 147583 transitions. [2021-06-05 06:46:11,929 INFO L78 Accepts]: Start accepts. Automaton has 37965 states and 147583 transitions. Word has length 28 [2021-06-05 06:46:11,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:11,929 INFO L482 AbstractCegarLoop]: Abstraction has 37965 states and 147583 transitions. [2021-06-05 06:46:11,929 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 06:46:11,930 INFO L276 IsEmpty]: Start isEmpty. Operand 37965 states and 147583 transitions. [2021-06-05 06:46:11,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:11,988 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:11,988 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 06:46:12,189 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 216 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4112 [2021-06-05 06:46:12,189 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:12,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:12,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1020548699, now seen corresponding path program 139 times [2021-06-05 06:46:12,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:12,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731363180] [2021-06-05 06:46:12,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:12,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:12,218 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 06:46:12,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:12,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731363180] [2021-06-05 06:46:12,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731363180] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:12,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517032710] [2021-06-05 06:46:12,218 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 06:46:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:12,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:12,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:12,504 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 06:46:12,504 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517032710] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:12,504 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:12,504 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:46:12,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755877831] [2021-06-05 06:46:12,504 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:46:12,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:12,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:46:12,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:46:12,505 INFO L87 Difference]: Start difference. First operand 37965 states and 147583 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 06:46:13,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:13,817 INFO L93 Difference]: Finished difference Result 63470 states and 235834 transitions. [2021-06-05 06:46:13,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 06:46:13,825 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 06:46:13,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:14,008 INFO L225 Difference]: With dead ends: 63470 [2021-06-05 06:46:14,008 INFO L226 Difference]: Without dead ends: 63470 [2021-06-05 06:46:14,008 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1509 ImplicationChecksByTransitivity, 708.1ms TimeCoverageRelationStatistics Valid=944, Invalid=3216, Unknown=0, NotChecked=0, Total=4160 [2021-06-05 06:46:14,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63470 states. [2021-06-05 06:46:15,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63470 to 37989. [2021-06-05 06:46:15,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37989 states, 37988 states have (on average 3.8877277034853113) internal successors, (147687), 37988 states have internal predecessors, (147687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:15,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37989 states to 37989 states and 147687 transitions. [2021-06-05 06:46:15,286 INFO L78 Accepts]: Start accepts. Automaton has 37989 states and 147687 transitions. Word has length 28 [2021-06-05 06:46:15,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:15,286 INFO L482 AbstractCegarLoop]: Abstraction has 37989 states and 147687 transitions. [2021-06-05 06:46:15,286 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 06:46:15,286 INFO L276 IsEmpty]: Start isEmpty. Operand 37989 states and 147687 transitions. [2021-06-05 06:46:15,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:15,345 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:15,345 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 06:46:15,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4113,217 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:15,545 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:15,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:15,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1101924787, now seen corresponding path program 140 times [2021-06-05 06:46:15,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:15,546 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552476096] [2021-06-05 06:46:15,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:15,577 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 06:46:15,577 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:15,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552476096] [2021-06-05 06:46:15,577 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552476096] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:15,577 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557737035] [2021-06-05 06:46:15,577 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 06:46:15,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:46:15,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:15,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:15,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:15,897 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 06:46:15,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557737035] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:15,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:15,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:46:15,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72888286] [2021-06-05 06:46:15,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:46:15,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:15,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:46:15,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:46:15,898 INFO L87 Difference]: Start difference. First operand 37989 states and 147687 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 06:46:16,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:16,886 INFO L93 Difference]: Finished difference Result 62601 states and 233589 transitions. [2021-06-05 06:46:16,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 06:46:16,886 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 06:46:16,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:17,049 INFO L225 Difference]: With dead ends: 62601 [2021-06-05 06:46:17,050 INFO L226 Difference]: Without dead ends: 62593 [2021-06-05 06:46:17,050 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1172 ImplicationChecksByTransitivity, 660.1ms TimeCoverageRelationStatistics Valid=781, Invalid=2641, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 06:46:17,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62593 states. [2021-06-05 06:46:18,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62593 to 37989. [2021-06-05 06:46:18,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37989 states, 37988 states have (on average 3.8875697588712224) internal successors, (147681), 37988 states have internal predecessors, (147681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:18,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37989 states to 37989 states and 147681 transitions. [2021-06-05 06:46:18,613 INFO L78 Accepts]: Start accepts. Automaton has 37989 states and 147681 transitions. Word has length 28 [2021-06-05 06:46:18,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:18,613 INFO L482 AbstractCegarLoop]: Abstraction has 37989 states and 147681 transitions. [2021-06-05 06:46:18,613 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 06:46:18,613 INFO L276 IsEmpty]: Start isEmpty. Operand 37989 states and 147681 transitions. [2021-06-05 06:46:18,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:18,696 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:18,696 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 06:46:18,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4114,218 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:18,913 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:18,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:18,913 INFO L82 PathProgramCache]: Analyzing trace with hash 2032582003, now seen corresponding path program 141 times [2021-06-05 06:46:18,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:18,913 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188227013] [2021-06-05 06:46:18,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:18,953 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 06:46:18,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:18,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188227013] [2021-06-05 06:46:18,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188227013] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:18,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703882708] [2021-06-05 06:46:18,953 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 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 06:46:18,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:46:18,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:18,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:18,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:19,082 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 06:46:19,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703882708] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:19,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:19,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:46:19,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543820489] [2021-06-05 06:46:19,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:46:19,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:19,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:46:19,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:46:19,083 INFO L87 Difference]: Start difference. First operand 37989 states and 147681 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 06:46:20,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:20,390 INFO L93 Difference]: Finished difference Result 62283 states and 232726 transitions. [2021-06-05 06:46:20,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 06:46:20,391 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 06:46:20,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:20,558 INFO L225 Difference]: With dead ends: 62283 [2021-06-05 06:46:20,558 INFO L226 Difference]: Without dead ends: 62283 [2021-06-05 06:46:20,558 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1363 ImplicationChecksByTransitivity, 564.8ms TimeCoverageRelationStatistics Valid=872, Invalid=3034, Unknown=0, NotChecked=0, Total=3906 [2021-06-05 06:46:20,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62283 states. [2021-06-05 06:46:21,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62283 to 37997. [2021-06-05 06:46:21,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37997 states, 37996 states have (on average 3.8876460680071587) internal successors, (147715), 37996 states have internal predecessors, (147715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:22,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37997 states to 37997 states and 147715 transitions. [2021-06-05 06:46:22,023 INFO L78 Accepts]: Start accepts. Automaton has 37997 states and 147715 transitions. Word has length 28 [2021-06-05 06:46:22,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:22,023 INFO L482 AbstractCegarLoop]: Abstraction has 37997 states and 147715 transitions. [2021-06-05 06:46:22,023 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 06:46:22,023 INFO L276 IsEmpty]: Start isEmpty. Operand 37997 states and 147715 transitions. [2021-06-05 06:46:22,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:22,082 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:22,082 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 06:46:22,283 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4115 [2021-06-05 06:46:22,283 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:22,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:22,283 INFO L82 PathProgramCache]: Analyzing trace with hash -619346139, now seen corresponding path program 142 times [2021-06-05 06:46:22,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:22,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962974281] [2021-06-05 06:46:22,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:22,312 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 06:46:22,312 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:22,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962974281] [2021-06-05 06:46:22,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962974281] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:22,312 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289604185] [2021-06-05 06:46:22,312 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 06:46:22,333 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:46:22,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:22,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:22,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:22,421 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 06:46:22,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [289604185] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:22,421 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:22,421 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:46:22,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127160838] [2021-06-05 06:46:22,421 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:46:22,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:22,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:46:22,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:46:22,421 INFO L87 Difference]: Start difference. First operand 37997 states and 147715 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 06:46:23,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:23,617 INFO L93 Difference]: Finished difference Result 62072 states and 232200 transitions. [2021-06-05 06:46:23,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 06:46:23,617 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 06:46:23,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:23,801 INFO L225 Difference]: With dead ends: 62072 [2021-06-05 06:46:23,801 INFO L226 Difference]: Without dead ends: 62064 [2021-06-05 06:46:23,801 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1134 ImplicationChecksByTransitivity, 459.0ms TimeCoverageRelationStatistics Valid=767, Invalid=2539, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 06:46:23,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62064 states. [2021-06-05 06:46:24,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62064 to 37997. [2021-06-05 06:46:25,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37997 states, 37996 states have (on average 3.887593430887462) internal successors, (147713), 37996 states have internal predecessors, (147713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:25,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37997 states to 37997 states and 147713 transitions. [2021-06-05 06:46:25,130 INFO L78 Accepts]: Start accepts. Automaton has 37997 states and 147713 transitions. Word has length 28 [2021-06-05 06:46:25,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:25,130 INFO L482 AbstractCegarLoop]: Abstraction has 37997 states and 147713 transitions. [2021-06-05 06:46:25,130 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 06:46:25,130 INFO L276 IsEmpty]: Start isEmpty. Operand 37997 states and 147713 transitions. [2021-06-05 06:46:25,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:25,190 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:25,190 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 06:46:25,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4116,220 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:25,390 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:25,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:25,391 INFO L82 PathProgramCache]: Analyzing trace with hash 384081845, now seen corresponding path program 143 times [2021-06-05 06:46:25,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:25,391 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214378995] [2021-06-05 06:46:25,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:25,420 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 06:46:25,420 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:25,420 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214378995] [2021-06-05 06:46:25,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214378995] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:25,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915233811] [2021-06-05 06:46:25,421 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 06:46:25,442 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:46:25,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:25,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:25,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:25,516 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 06:46:25,516 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915233811] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:25,516 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:25,516 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 06:46:25,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605194167] [2021-06-05 06:46:25,516 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:46:25,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:25,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:46:25,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:46:25,516 INFO L87 Difference]: Start difference. First operand 37997 states and 147713 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 06:46:26,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:26,849 INFO L93 Difference]: Finished difference Result 61433 states and 228496 transitions. [2021-06-05 06:46:26,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-06-05 06:46:26,850 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 06:46:26,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:27,010 INFO L225 Difference]: With dead ends: 61433 [2021-06-05 06:46:27,010 INFO L226 Difference]: Without dead ends: 61433 [2021-06-05 06:46:27,010 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1757 ImplicationChecksByTransitivity, 807.4ms TimeCoverageRelationStatistics Valid=978, Invalid=3714, Unknown=0, NotChecked=0, Total=4692 [2021-06-05 06:46:27,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61433 states. [2021-06-05 06:46:28,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61433 to 40835. [2021-06-05 06:46:28,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40835 states, 40834 states have (on average 3.891022187392859) internal successors, (158886), 40834 states have internal predecessors, (158886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:28,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40835 states to 40835 states and 158886 transitions. [2021-06-05 06:46:28,389 INFO L78 Accepts]: Start accepts. Automaton has 40835 states and 158886 transitions. Word has length 28 [2021-06-05 06:46:28,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:28,389 INFO L482 AbstractCegarLoop]: Abstraction has 40835 states and 158886 transitions. [2021-06-05 06:46:28,389 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 06:46:28,389 INFO L276 IsEmpty]: Start isEmpty. Operand 40835 states and 158886 transitions. [2021-06-05 06:46:28,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:28,710 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:28,710 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 06:46:28,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4117,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:28,921 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:28,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:28,921 INFO L82 PathProgramCache]: Analyzing trace with hash 465457933, now seen corresponding path program 144 times [2021-06-05 06:46:28,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:28,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418286565] [2021-06-05 06:46:28,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:28,953 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 06:46:28,954 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:28,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418286565] [2021-06-05 06:46:28,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418286565] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:28,954 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149720897] [2021-06-05 06:46:28,954 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 06:46:28,977 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 06:46:28,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:28,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:28,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:29,054 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 06:46:29,054 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149720897] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:29,054 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:29,054 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 06:46:29,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904365872] [2021-06-05 06:46:29,055 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:46:29,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:29,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:46:29,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:46:29,055 INFO L87 Difference]: Start difference. First operand 40835 states and 158886 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 06:46:30,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:30,107 INFO L93 Difference]: Finished difference Result 60949 states and 227223 transitions. [2021-06-05 06:46:30,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-06-05 06:46:30,107 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 06:46:30,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:30,277 INFO L225 Difference]: With dead ends: 60949 [2021-06-05 06:46:30,277 INFO L226 Difference]: Without dead ends: 60941 [2021-06-05 06:46:30,277 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 485.4ms TimeCoverageRelationStatistics Valid=736, Invalid=2804, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:46:30,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60941 states. [2021-06-05 06:46:31,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60941 to 40523. [2021-06-05 06:46:31,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40523 states, 40522 states have (on average 3.8970929371699325) internal successors, (157918), 40522 states have internal predecessors, (157918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:31,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40523 states to 40523 states and 157918 transitions. [2021-06-05 06:46:31,814 INFO L78 Accepts]: Start accepts. Automaton has 40523 states and 157918 transitions. Word has length 28 [2021-06-05 06:46:31,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:31,814 INFO L482 AbstractCegarLoop]: Abstraction has 40523 states and 157918 transitions. [2021-06-05 06:46:31,814 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 06:46:31,815 INFO L276 IsEmpty]: Start isEmpty. Operand 40523 states and 157918 transitions. [2021-06-05 06:46:31,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:31,877 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:31,877 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 06:46:32,077 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4118 [2021-06-05 06:46:32,077 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:32,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:32,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1049634039, now seen corresponding path program 145 times [2021-06-05 06:46:32,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:32,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62400346] [2021-06-05 06:46:32,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:32,107 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 06:46:32,107 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:32,107 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62400346] [2021-06-05 06:46:32,107 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62400346] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:32,108 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938980121] [2021-06-05 06:46:32,108 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 06:46:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:32,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:32,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:32,197 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 06:46:32,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938980121] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:32,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:32,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 14 [2021-06-05 06:46:32,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052144567] [2021-06-05 06:46:32,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:46:32,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:32,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:46:32,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:46:32,198 INFO L87 Difference]: Start difference. First operand 40523 states and 157918 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 06:46:32,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:32,960 INFO L93 Difference]: Finished difference Result 59492 states and 223219 transitions. [2021-06-05 06:46:32,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-06-05 06:46:32,960 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 06:46:32,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:33,121 INFO L225 Difference]: With dead ends: 59492 [2021-06-05 06:46:33,121 INFO L226 Difference]: Without dead ends: 59468 [2021-06-05 06:46:33,121 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 695 ImplicationChecksByTransitivity, 330.4ms TimeCoverageRelationStatistics Valid=498, Invalid=1758, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 06:46:33,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59468 states. [2021-06-05 06:46:34,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59468 to 40429. [2021-06-05 06:46:34,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40429 states, 40428 states have (on average 3.8969278717720393) internal successors, (157545), 40428 states have internal predecessors, (157545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:34,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40429 states to 40429 states and 157545 transitions. [2021-06-05 06:46:34,801 INFO L78 Accepts]: Start accepts. Automaton has 40429 states and 157545 transitions. Word has length 28 [2021-06-05 06:46:34,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:34,801 INFO L482 AbstractCegarLoop]: Abstraction has 40429 states and 157545 transitions. [2021-06-05 06:46:34,801 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 06:46:34,801 INFO L276 IsEmpty]: Start isEmpty. Operand 40429 states and 157545 transitions. [2021-06-05 06:46:34,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:34,879 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:34,879 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 06:46:35,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4119,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:35,080 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:35,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:35,080 INFO L82 PathProgramCache]: Analyzing trace with hash 547492677, now seen corresponding path program 146 times [2021-06-05 06:46:35,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:35,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364946864] [2021-06-05 06:46:35,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:35,114 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 06:46:35,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:35,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364946864] [2021-06-05 06:46:35,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364946864] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:35,115 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262993808] [2021-06-05 06:46:35,115 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 06:46:35,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:46:35,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:35,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:35,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:35,242 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 06:46:35,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262993808] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:35,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:35,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:46:35,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375349982] [2021-06-05 06:46:35,243 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:46:35,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:35,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:46:35,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:46:35,243 INFO L87 Difference]: Start difference. First operand 40429 states and 157545 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 06:46:36,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:36,442 INFO L93 Difference]: Finished difference Result 60725 states and 226603 transitions. [2021-06-05 06:46:36,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-06-05 06:46:36,442 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 06:46:36,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:36,922 INFO L225 Difference]: With dead ends: 60725 [2021-06-05 06:46:36,922 INFO L226 Difference]: Without dead ends: 60725 [2021-06-05 06:46:36,922 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 611.0ms TimeCoverageRelationStatistics Valid=878, Invalid=3412, Unknown=0, NotChecked=0, Total=4290 [2021-06-05 06:46:36,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60725 states. [2021-06-05 06:46:38,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60725 to 40525. [2021-06-05 06:46:38,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40525 states, 40524 states have (on average 3.8954446747606357) internal successors, (157859), 40524 states have internal predecessors, (157859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:38,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40525 states to 40525 states and 157859 transitions. [2021-06-05 06:46:38,233 INFO L78 Accepts]: Start accepts. Automaton has 40525 states and 157859 transitions. Word has length 28 [2021-06-05 06:46:38,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:38,233 INFO L482 AbstractCegarLoop]: Abstraction has 40525 states and 157859 transitions. [2021-06-05 06:46:38,233 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 06:46:38,233 INFO L276 IsEmpty]: Start isEmpty. Operand 40525 states and 157859 transitions. [2021-06-05 06:46:38,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:38,299 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:38,299 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 06:46:38,499 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 224 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4120 [2021-06-05 06:46:38,499 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:38,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:38,500 INFO L82 PathProgramCache]: Analyzing trace with hash -2104435465, now seen corresponding path program 147 times [2021-06-05 06:46:38,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:38,500 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567545146] [2021-06-05 06:46:38,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:38,531 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 06:46:38,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:38,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567545146] [2021-06-05 06:46:38,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567545146] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:38,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696885700] [2021-06-05 06:46:38,531 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 06:46:38,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:46:38,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:38,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:38,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:38,639 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 06:46:38,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696885700] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:38,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:38,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16 [2021-06-05 06:46:38,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471402194] [2021-06-05 06:46:38,640 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:46:38,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:38,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:46:38,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:46:38,640 INFO L87 Difference]: Start difference. First operand 40525 states and 157859 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 06:46:39,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:39,603 INFO L93 Difference]: Finished difference Result 60415 states and 225723 transitions. [2021-06-05 06:46:39,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-06-05 06:46:39,603 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 06:46:39,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:40,116 INFO L225 Difference]: With dead ends: 60415 [2021-06-05 06:46:40,117 INFO L226 Difference]: Without dead ends: 60407 [2021-06-05 06:46:40,117 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1131 ImplicationChecksByTransitivity, 458.4ms TimeCoverageRelationStatistics Valid=716, Invalid=2590, Unknown=0, NotChecked=0, Total=3306 [2021-06-05 06:46:40,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60407 states. [2021-06-05 06:46:41,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60407 to 40457. [2021-06-05 06:46:41,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40457 states, 40456 states have (on average 3.8967520268934153) internal successors, (157647), 40456 states have internal predecessors, (157647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:41,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40457 states to 40457 states and 157647 transitions. [2021-06-05 06:46:41,465 INFO L78 Accepts]: Start accepts. Automaton has 40457 states and 157647 transitions. Word has length 28 [2021-06-05 06:46:41,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:41,465 INFO L482 AbstractCegarLoop]: Abstraction has 40457 states and 157647 transitions. [2021-06-05 06:46:41,465 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 06:46:41,465 INFO L276 IsEmpty]: Start isEmpty. Operand 40457 states and 157647 transitions. [2021-06-05 06:46:41,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:41,537 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:41,537 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 06:46:41,737 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 225 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4121 [2021-06-05 06:46:41,737 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:41,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:41,738 INFO L82 PathProgramCache]: Analyzing trace with hash 923074653, now seen corresponding path program 148 times [2021-06-05 06:46:41,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:41,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688160039] [2021-06-05 06:46:41,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:41,783 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 06:46:41,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:41,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688160039] [2021-06-05 06:46:41,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688160039] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:41,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069649988] [2021-06-05 06:46:41,783 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 06:46:41,806 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:46:41,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:41,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:41,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:41,892 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 06:46:41,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069649988] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:41,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:41,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 15 [2021-06-05 06:46:41,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404817814] [2021-06-05 06:46:41,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:46:41,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:41,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:46:41,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:46:41,893 INFO L87 Difference]: Start difference. First operand 40457 states and 157647 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 06:46:42,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:42,773 INFO L93 Difference]: Finished difference Result 59146 states and 222212 transitions. [2021-06-05 06:46:42,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-06-05 06:46:42,774 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 06:46:42,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:42,931 INFO L225 Difference]: With dead ends: 59146 [2021-06-05 06:46:42,932 INFO L226 Difference]: Without dead ends: 59122 [2021-06-05 06:46:42,932 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 655 ImplicationChecksByTransitivity, 373.5ms TimeCoverageRelationStatistics Valid=487, Invalid=1675, Unknown=0, NotChecked=0, Total=2162 [2021-06-05 06:46:43,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59122 states. [2021-06-05 06:46:44,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59122 to 40433. [2021-06-05 06:46:44,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40433 states, 40432 states have (on average 3.896888603086664) internal successors, (157559), 40432 states have internal predecessors, (157559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:44,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40433 states to 40433 states and 157559 transitions. [2021-06-05 06:46:44,615 INFO L78 Accepts]: Start accepts. Automaton has 40433 states and 157559 transitions. Word has length 28 [2021-06-05 06:46:44,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:44,615 INFO L482 AbstractCegarLoop]: Abstraction has 40433 states and 157559 transitions. [2021-06-05 06:46:44,615 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 06:46:44,615 INFO L276 IsEmpty]: Start isEmpty. Operand 40433 states and 157559 transitions. [2021-06-05 06:46:44,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:44,677 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:44,677 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 06:46:44,878 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 226 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4122 [2021-06-05 06:46:44,878 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:44,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:44,878 INFO L82 PathProgramCache]: Analyzing trace with hash 100408761, now seen corresponding path program 149 times [2021-06-05 06:46:44,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:44,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781981422] [2021-06-05 06:46:44,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:44,913 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 06:46:44,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:44,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781981422] [2021-06-05 06:46:44,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781981422] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:44,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42540569] [2021-06-05 06:46:44,913 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 06:46:44,936 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:46:44,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:44,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:44,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:45,002 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 06:46:45,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42540569] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:45,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:45,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:46:45,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116469881] [2021-06-05 06:46:45,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:46:45,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:45,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:46:45,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:46:45,003 INFO L87 Difference]: Start difference. First operand 40433 states and 157559 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 06:46:46,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:46,652 INFO L93 Difference]: Finished difference Result 62335 states and 231295 transitions. [2021-06-05 06:46:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-06-05 06:46:46,653 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 06:46:46,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:46,826 INFO L225 Difference]: With dead ends: 62335 [2021-06-05 06:46:46,826 INFO L226 Difference]: Without dead ends: 62335 [2021-06-05 06:46:46,826 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2861 ImplicationChecksByTransitivity, 783.6ms TimeCoverageRelationStatistics Valid=1421, Invalid=5889, Unknown=0, NotChecked=0, Total=7310 [2021-06-05 06:46:46,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62335 states. [2021-06-05 06:46:48,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62335 to 44875. [2021-06-05 06:46:48,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44875 states, 44874 states have (on average 3.8457458662031465) internal successors, (172574), 44874 states have internal predecessors, (172574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:48,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44875 states to 44875 states and 172574 transitions. [2021-06-05 06:46:48,302 INFO L78 Accepts]: Start accepts. Automaton has 44875 states and 172574 transitions. Word has length 28 [2021-06-05 06:46:48,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:48,302 INFO L482 AbstractCegarLoop]: Abstraction has 44875 states and 172574 transitions. [2021-06-05 06:46:48,303 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 06:46:48,303 INFO L276 IsEmpty]: Start isEmpty. Operand 44875 states and 172574 transitions. [2021-06-05 06:46:48,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:48,378 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:48,378 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 06:46:48,578 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 227 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4123 [2021-06-05 06:46:48,578 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:48,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:48,579 INFO L82 PathProgramCache]: Analyzing trace with hash 181784849, now seen corresponding path program 150 times [2021-06-05 06:46:48,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:48,579 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038780100] [2021-06-05 06:46:48,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:48,613 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 06:46:48,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:48,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038780100] [2021-06-05 06:46:48,614 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038780100] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:48,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618118256] [2021-06-05 06:46:48,614 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 06:46:48,636 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:46:48,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:48,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:48,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:48,696 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 06:46:48,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618118256] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:48,696 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:48,696 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:46:48,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635579927] [2021-06-05 06:46:48,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:46:48,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:48,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:46:48,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:46:48,697 INFO L87 Difference]: Start difference. First operand 44875 states and 172574 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 06:46:50,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:50,149 INFO L93 Difference]: Finished difference Result 61566 states and 229189 transitions. [2021-06-05 06:46:50,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-06-05 06:46:50,149 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 06:46:50,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:50,310 INFO L225 Difference]: With dead ends: 61566 [2021-06-05 06:46:50,310 INFO L226 Difference]: Without dead ends: 61558 [2021-06-05 06:46:50,311 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1934 ImplicationChecksByTransitivity, 611.4ms TimeCoverageRelationStatistics Valid=1035, Invalid=4221, Unknown=0, NotChecked=0, Total=5256 [2021-06-05 06:46:50,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61558 states. [2021-06-05 06:46:51,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61558 to 43735. [2021-06-05 06:46:51,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43735 states, 43734 states have (on average 3.8648191338546667) internal successors, (169024), 43734 states have internal predecessors, (169024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:51,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43735 states to 43735 states and 169024 transitions. [2021-06-05 06:46:51,740 INFO L78 Accepts]: Start accepts. Automaton has 43735 states and 169024 transitions. Word has length 28 [2021-06-05 06:46:51,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:51,740 INFO L482 AbstractCegarLoop]: Abstraction has 43735 states and 169024 transitions. [2021-06-05 06:46:51,740 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 06:46:51,740 INFO L276 IsEmpty]: Start isEmpty. Operand 43735 states and 169024 transitions. [2021-06-05 06:46:51,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:51,807 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:51,807 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 06:46:52,007 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4124,228 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:52,007 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:52,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:52,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1333307123, now seen corresponding path program 151 times [2021-06-05 06:46:52,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:52,008 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074398760] [2021-06-05 06:46:52,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:52,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:52,042 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 06:46:52,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:52,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074398760] [2021-06-05 06:46:52,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074398760] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:52,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552624331] [2021-06-05 06:46:52,042 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 06:46:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:52,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:52,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:52,124 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 06:46:52,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552624331] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:52,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:52,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:46:52,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198451154] [2021-06-05 06:46:52,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:46:52,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:52,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:46:52,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:46:52,125 INFO L87 Difference]: Start difference. First operand 43735 states and 169024 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 06:46:53,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:53,436 INFO L93 Difference]: Finished difference Result 59917 states and 224585 transitions. [2021-06-05 06:46:53,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 06:46:53,436 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 06:46:53,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:53,594 INFO L225 Difference]: With dead ends: 59917 [2021-06-05 06:46:53,594 INFO L226 Difference]: Without dead ends: 59893 [2021-06-05 06:46:53,595 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 541.7ms TimeCoverageRelationStatistics Valid=814, Invalid=3218, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 06:46:53,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59893 states. [2021-06-05 06:46:54,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59893 to 43743. [2021-06-05 06:46:54,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43743 states, 43742 states have (on average 3.8626948927803944) internal successors, (168962), 43742 states have internal predecessors, (168962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:55,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43743 states to 43743 states and 168962 transitions. [2021-06-05 06:46:55,062 INFO L78 Accepts]: Start accepts. Automaton has 43743 states and 168962 transitions. Word has length 28 [2021-06-05 06:46:55,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:55,063 INFO L482 AbstractCegarLoop]: Abstraction has 43743 states and 168962 transitions. [2021-06-05 06:46:55,063 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 06:46:55,063 INFO L276 IsEmpty]: Start isEmpty. Operand 43743 states and 168962 transitions. [2021-06-05 06:46:55,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:55,130 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:55,130 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 06:46:55,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4125,229 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:55,333 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:55,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:55,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1959694861, now seen corresponding path program 152 times [2021-06-05 06:46:55,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:55,333 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589541731] [2021-06-05 06:46:55,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:55,368 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 06:46:55,368 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:55,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589541731] [2021-06-05 06:46:55,369 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589541731] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:55,369 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086071965] [2021-06-05 06:46:55,369 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 06:46:55,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:46:55,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:55,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:55,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:55,452 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 06:46:55,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086071965] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:55,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:55,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-06-05 06:46:55,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89424018] [2021-06-05 06:46:55,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:46:55,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:55,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:46:55,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:46:55,453 INFO L87 Difference]: Start difference. First operand 43743 states and 168962 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 06:46:56,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:46:56,740 INFO L93 Difference]: Finished difference Result 61196 states and 228200 transitions. [2021-06-05 06:46:56,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 06:46:56,740 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 06:46:56,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:46:56,908 INFO L225 Difference]: With dead ends: 61196 [2021-06-05 06:46:56,908 INFO L226 Difference]: Without dead ends: 61156 [2021-06-05 06:46:56,909 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1158 ImplicationChecksByTransitivity, 493.6ms TimeCoverageRelationStatistics Valid=722, Invalid=2818, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:46:56,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61156 states. [2021-06-05 06:46:58,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61156 to 43881. [2021-06-05 06:46:58,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43881 states, 43880 states have (on average 3.862010027347311) internal successors, (169465), 43880 states have internal predecessors, (169465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:46:58,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43881 states to 43881 states and 169465 transitions. [2021-06-05 06:46:58,261 INFO L78 Accepts]: Start accepts. Automaton has 43881 states and 169465 transitions. Word has length 28 [2021-06-05 06:46:58,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:46:58,261 INFO L482 AbstractCegarLoop]: Abstraction has 43881 states and 169465 transitions. [2021-06-05 06:46:58,261 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 06:46:58,261 INFO L276 IsEmpty]: Start isEmpty. Operand 43881 states and 169465 transitions. [2021-06-05 06:46:58,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:46:58,330 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:46:58,330 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 06:46:58,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4126,230 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:46:58,530 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:46:58,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:46:58,531 INFO L82 PathProgramCache]: Analyzing trace with hash 243917385, now seen corresponding path program 153 times [2021-06-05 06:46:58,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:46:58,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895491941] [2021-06-05 06:46:58,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:46:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:46:58,566 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 06:46:58,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:46:58,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895491941] [2021-06-05 06:46:58,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895491941] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:58,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911335508] [2021-06-05 06:46:58,567 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 06:46:58,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:46:58,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:46:58,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:46:58,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:46:58,685 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 06:46:58,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911335508] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:46:58,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:46:58,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:46:58,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361503294] [2021-06-05 06:46:58,685 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:46:58,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:46:58,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:46:58,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:46:58,686 INFO L87 Difference]: Start difference. First operand 43881 states and 169465 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 06:47:00,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:00,292 INFO L93 Difference]: Finished difference Result 60421 states and 225864 transitions. [2021-06-05 06:47:00,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-06-05 06:47:00,293 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 06:47:00,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:00,447 INFO L225 Difference]: With dead ends: 60421 [2021-06-05 06:47:00,447 INFO L226 Difference]: Without dead ends: 60421 [2021-06-05 06:47:00,448 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2487 ImplicationChecksByTransitivity, 1033.8ms TimeCoverageRelationStatistics Valid=1250, Invalid=5392, Unknown=0, NotChecked=0, Total=6642 [2021-06-05 06:47:00,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60421 states. [2021-06-05 06:47:01,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60421 to 44786. [2021-06-05 06:47:01,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44786 states, 44785 states have (on average 3.8525399129172713) internal successors, (172536), 44785 states have internal predecessors, (172536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:01,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44786 states to 44786 states and 172536 transitions. [2021-06-05 06:47:01,859 INFO L78 Accepts]: Start accepts. Automaton has 44786 states and 172536 transitions. Word has length 28 [2021-06-05 06:47:01,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:01,859 INFO L482 AbstractCegarLoop]: Abstraction has 44786 states and 172536 transitions. [2021-06-05 06:47:01,860 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 06:47:01,860 INFO L276 IsEmpty]: Start isEmpty. Operand 44786 states and 172536 transitions. [2021-06-05 06:47:01,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:01,931 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:01,931 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 06:47:02,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4127 [2021-06-05 06:47:02,131 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:02,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:02,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1886956539, now seen corresponding path program 154 times [2021-06-05 06:47:02,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:02,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048545731] [2021-06-05 06:47:02,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:02,166 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 06:47:02,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:02,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048545731] [2021-06-05 06:47:02,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048545731] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:02,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32158754] [2021-06-05 06:47:02,167 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 06:47:02,188 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:47:02,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:02,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:02,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:02,558 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 06:47:02,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32158754] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:02,558 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:02,558 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:47:02,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129511564] [2021-06-05 06:47:02,558 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:47:02,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:02,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:47:02,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:47:02,559 INFO L87 Difference]: Start difference. First operand 44786 states and 172536 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 06:47:03,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:03,740 INFO L93 Difference]: Finished difference Result 59926 states and 224477 transitions. [2021-06-05 06:47:03,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 06:47:03,741 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 06:47:03,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:03,901 INFO L225 Difference]: With dead ends: 59926 [2021-06-05 06:47:03,901 INFO L226 Difference]: Without dead ends: 59918 [2021-06-05 06:47:03,901 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1728 ImplicationChecksByTransitivity, 914.3ms TimeCoverageRelationStatistics Valid=973, Invalid=3857, Unknown=0, NotChecked=0, Total=4830 [2021-06-05 06:47:03,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59918 states. [2021-06-05 06:47:05,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59918 to 44710. [2021-06-05 06:47:05,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44710 states, 44709 states have (on average 3.8538101948153614) internal successors, (172300), 44709 states have internal predecessors, (172300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:05,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44710 states to 44710 states and 172300 transitions. [2021-06-05 06:47:05,259 INFO L78 Accepts]: Start accepts. Automaton has 44710 states and 172300 transitions. Word has length 28 [2021-06-05 06:47:05,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:05,259 INFO L482 AbstractCegarLoop]: Abstraction has 44710 states and 172300 transitions. [2021-06-05 06:47:05,259 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 06:47:05,259 INFO L276 IsEmpty]: Start isEmpty. Operand 44710 states and 172300 transitions. [2021-06-05 06:47:05,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:05,327 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:05,327 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 06:47:05,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4128,232 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:05,528 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:05,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:05,528 INFO L82 PathProgramCache]: Analyzing trace with hash 619499361, now seen corresponding path program 155 times [2021-06-05 06:47:05,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:05,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027792807] [2021-06-05 06:47:05,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:05,742 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 06:47:05,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:05,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027792807] [2021-06-05 06:47:05,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027792807] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:05,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438288767] [2021-06-05 06:47:05,742 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 06:47:05,768 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:47:05,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:05,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:05,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:05,847 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 06:47:05,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438288767] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:05,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:05,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:47:05,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918970531] [2021-06-05 06:47:05,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:47:05,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:05,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:47:05,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:47:05,848 INFO L87 Difference]: Start difference. First operand 44710 states and 172300 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 06:47:06,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:06,922 INFO L93 Difference]: Finished difference Result 59403 states and 223231 transitions. [2021-06-05 06:47:06,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-05 06:47:06,922 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 06:47:06,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:07,093 INFO L225 Difference]: With dead ends: 59403 [2021-06-05 06:47:07,093 INFO L226 Difference]: Without dead ends: 59379 [2021-06-05 06:47:07,093 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1251 ImplicationChecksByTransitivity, 707.4ms TimeCoverageRelationStatistics Valid=750, Invalid=3032, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:47:07,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59379 states. [2021-06-05 06:47:08,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59379 to 44696. [2021-06-05 06:47:08,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44696 states, 44695 states have (on average 3.8537867770444123) internal successors, (172245), 44695 states have internal predecessors, (172245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:08,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44696 states to 44696 states and 172245 transitions. [2021-06-05 06:47:08,599 INFO L78 Accepts]: Start accepts. Automaton has 44696 states and 172245 transitions. Word has length 28 [2021-06-05 06:47:08,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:08,599 INFO L482 AbstractCegarLoop]: Abstraction has 44696 states and 172245 transitions. [2021-06-05 06:47:08,599 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 06:47:08,599 INFO L276 IsEmpty]: Start isEmpty. Operand 44696 states and 172245 transitions. [2021-06-05 06:47:08,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:08,867 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:08,867 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 06:47:09,089 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4129 [2021-06-05 06:47:09,089 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:09,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:09,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1303085277, now seen corresponding path program 156 times [2021-06-05 06:47:09,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:09,090 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299739614] [2021-06-05 06:47:09,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:09,125 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 06:47:09,126 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:09,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299739614] [2021-06-05 06:47:09,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299739614] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:09,126 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442539540] [2021-06-05 06:47:09,126 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 06:47:09,148 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:47:09,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:09,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:09,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:09,217 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 06:47:09,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442539540] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:09,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:09,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2021-06-05 06:47:09,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853657284] [2021-06-05 06:47:09,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:47:09,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:09,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:47:09,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:47:09,218 INFO L87 Difference]: Start difference. First operand 44696 states and 172245 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 06:47:10,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:10,223 INFO L93 Difference]: Finished difference Result 59185 states and 222538 transitions. [2021-06-05 06:47:10,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-06-05 06:47:10,224 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 06:47:10,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:10,377 INFO L225 Difference]: With dead ends: 59185 [2021-06-05 06:47:10,377 INFO L226 Difference]: Without dead ends: 59145 [2021-06-05 06:47:10,377 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 489.8ms TimeCoverageRelationStatistics Valid=696, Invalid=2726, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 06:47:10,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59145 states. [2021-06-05 06:47:11,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59145 to 45045. [2021-06-05 06:47:11,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45045 states, 45044 states have (on average 3.855652251132226) internal successors, (173674), 45044 states have internal predecessors, (173674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45045 states to 45045 states and 173674 transitions. [2021-06-05 06:47:11,723 INFO L78 Accepts]: Start accepts. Automaton has 45045 states and 173674 transitions. Word has length 28 [2021-06-05 06:47:11,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:11,723 INFO L482 AbstractCegarLoop]: Abstraction has 45045 states and 173674 transitions. [2021-06-05 06:47:11,723 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 06:47:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand 45045 states and 173674 transitions. [2021-06-05 06:47:11,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:11,998 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:11,998 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 06:47:12,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4130,234 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:12,213 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:12,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:12,213 INFO L82 PathProgramCache]: Analyzing trace with hash 806750187, now seen corresponding path program 157 times [2021-06-05 06:47:12,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:12,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007553700] [2021-06-05 06:47:12,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:12,248 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 06:47:12,248 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:12,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007553700] [2021-06-05 06:47:12,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007553700] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:12,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403894803] [2021-06-05 06:47:12,248 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 06:47:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:12,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:12,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:12,357 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 06:47:12,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403894803] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:12,357 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:12,357 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:47:12,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585875483] [2021-06-05 06:47:12,357 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:47:12,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:12,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:47:12,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:47:12,358 INFO L87 Difference]: Start difference. First operand 45045 states and 173674 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 06:47:13,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:13,527 INFO L93 Difference]: Finished difference Result 71823 states and 267438 transitions. [2021-06-05 06:47:13,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-06-05 06:47:13,528 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 06:47:13,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:13,720 INFO L225 Difference]: With dead ends: 71823 [2021-06-05 06:47:13,721 INFO L226 Difference]: Without dead ends: 71823 [2021-06-05 06:47:13,721 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1468 ImplicationChecksByTransitivity, 555.1ms TimeCoverageRelationStatistics Valid=901, Invalid=3131, Unknown=0, NotChecked=0, Total=4032 [2021-06-05 06:47:13,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71823 states. [2021-06-05 06:47:15,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71823 to 46211. [2021-06-05 06:47:15,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46211 states, 46210 states have (on average 3.86991993075092) internal successors, (178829), 46210 states have internal predecessors, (178829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:15,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46211 states to 46211 states and 178829 transitions. [2021-06-05 06:47:15,514 INFO L78 Accepts]: Start accepts. Automaton has 46211 states and 178829 transitions. Word has length 28 [2021-06-05 06:47:15,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:15,514 INFO L482 AbstractCegarLoop]: Abstraction has 46211 states and 178829 transitions. [2021-06-05 06:47:15,514 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 06:47:15,514 INFO L276 IsEmpty]: Start isEmpty. Operand 46211 states and 178829 transitions. [2021-06-05 06:47:15,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:15,586 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:15,586 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 06:47:15,789 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 235 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4131 [2021-06-05 06:47:15,789 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:15,789 INFO L82 PathProgramCache]: Analyzing trace with hash 132028309, now seen corresponding path program 158 times [2021-06-05 06:47:15,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:15,789 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239394037] [2021-06-05 06:47:15,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:15,834 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 06:47:15,834 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:15,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239394037] [2021-06-05 06:47:15,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239394037] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:15,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027435052] [2021-06-05 06:47:15,834 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 06:47:15,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:47:15,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:15,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:15,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:15,941 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 06:47:15,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027435052] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:15,941 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:15,941 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:47:15,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130087680] [2021-06-05 06:47:15,941 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:47:15,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:15,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:47:15,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:47:15,942 INFO L87 Difference]: Start difference. First operand 46211 states and 178829 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 06:47:16,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:16,980 INFO L93 Difference]: Finished difference Result 65877 states and 248593 transitions. [2021-06-05 06:47:16,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-06-05 06:47:16,980 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 06:47:16,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:17,157 INFO L225 Difference]: With dead ends: 65877 [2021-06-05 06:47:17,157 INFO L226 Difference]: Without dead ends: 65877 [2021-06-05 06:47:17,158 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1173 ImplicationChecksByTransitivity, 508.3ms TimeCoverageRelationStatistics Valid=781, Invalid=2641, Unknown=0, NotChecked=0, Total=3422 [2021-06-05 06:47:17,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65877 states. [2021-06-05 06:47:18,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65877 to 46241. [2021-06-05 06:47:18,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46241 states, 46240 states have (on average 3.8697231833910033) internal successors, (178936), 46240 states have internal predecessors, (178936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:18,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46241 states to 46241 states and 178936 transitions. [2021-06-05 06:47:18,928 INFO L78 Accepts]: Start accepts. Automaton has 46241 states and 178936 transitions. Word has length 28 [2021-06-05 06:47:18,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:18,928 INFO L482 AbstractCegarLoop]: Abstraction has 46241 states and 178936 transitions. [2021-06-05 06:47:18,929 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 06:47:18,929 INFO L276 IsEmpty]: Start isEmpty. Operand 46241 states and 178936 transitions. [2021-06-05 06:47:19,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:19,001 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:19,001 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 06:47:19,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4132,236 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:19,201 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:19,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:19,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1785388485, now seen corresponding path program 159 times [2021-06-05 06:47:19,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:19,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727162425] [2021-06-05 06:47:19,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:19,237 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 06:47:19,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:19,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727162425] [2021-06-05 06:47:19,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727162425] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:19,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062488296] [2021-06-05 06:47:19,237 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 06:47:19,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:47:19,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:19,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:19,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:19,355 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 06:47:19,355 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062488296] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:19,355 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:19,355 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:47:19,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251867570] [2021-06-05 06:47:19,355 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:47:19,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:19,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:47:19,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:47:19,356 INFO L87 Difference]: Start difference. First operand 46241 states and 178936 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 06:47:21,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:21,190 INFO L93 Difference]: Finished difference Result 66732 states and 251021 transitions. [2021-06-05 06:47:21,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-06-05 06:47:21,190 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 06:47:21,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:21,388 INFO L225 Difference]: With dead ends: 66732 [2021-06-05 06:47:21,388 INFO L226 Difference]: Without dead ends: 66732 [2021-06-05 06:47:21,389 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2901 ImplicationChecksByTransitivity, 851.0ms TimeCoverageRelationStatistics Valid=1557, Invalid=5925, Unknown=0, NotChecked=0, Total=7482 [2021-06-05 06:47:21,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66732 states. [2021-06-05 06:47:22,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66732 to 46505. [2021-06-05 06:47:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46505 states, 46504 states have (on average 3.8662050576294513) internal successors, (179794), 46504 states have internal predecessors, (179794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:22,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46505 states to 46505 states and 179794 transitions. [2021-06-05 06:47:22,818 INFO L78 Accepts]: Start accepts. Automaton has 46505 states and 179794 transitions. Word has length 28 [2021-06-05 06:47:22,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:22,818 INFO L482 AbstractCegarLoop]: Abstraction has 46505 states and 179794 transitions. [2021-06-05 06:47:22,818 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 06:47:22,818 INFO L276 IsEmpty]: Start isEmpty. Operand 46505 states and 179794 transitions. [2021-06-05 06:47:22,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:22,887 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:22,887 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 06:47:23,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 237 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4133 [2021-06-05 06:47:23,088 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:23,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:23,088 INFO L82 PathProgramCache]: Analyzing trace with hash -866539657, now seen corresponding path program 160 times [2021-06-05 06:47:23,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:23,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808877262] [2021-06-05 06:47:23,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:23,123 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 06:47:23,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:23,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808877262] [2021-06-05 06:47:23,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808877262] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:23,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983431493] [2021-06-05 06:47:23,124 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 06:47:23,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:47:23,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:23,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:23,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:23,234 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 06:47:23,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983431493] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:23,234 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:23,234 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-06-05 06:47:23,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001491389] [2021-06-05 06:47:23,235 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-05 06:47:23,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:23,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-05 06:47:23,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-06-05 06:47:23,235 INFO L87 Difference]: Start difference. First operand 46505 states and 179794 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 06:47:24,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:24,868 INFO L93 Difference]: Finished difference Result 65947 states and 248794 transitions. [2021-06-05 06:47:24,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-06-05 06:47:24,868 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 06:47:24,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:25,045 INFO L225 Difference]: With dead ends: 65947 [2021-06-05 06:47:25,045 INFO L226 Difference]: Without dead ends: 65943 [2021-06-05 06:47:25,045 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1774 ImplicationChecksByTransitivity, 667.1ms TimeCoverageRelationStatistics Valid=1139, Invalid=3831, Unknown=0, NotChecked=0, Total=4970 [2021-06-05 06:47:25,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65943 states. [2021-06-05 06:47:26,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65943 to 46141. [2021-06-05 06:47:26,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46141 states, 46140 states have (on average 3.8699176419592543) internal successors, (178558), 46140 states have internal predecessors, (178558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:26,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46141 states to 46141 states and 178558 transitions. [2021-06-05 06:47:26,566 INFO L78 Accepts]: Start accepts. Automaton has 46141 states and 178558 transitions. Word has length 28 [2021-06-05 06:47:26,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:26,566 INFO L482 AbstractCegarLoop]: Abstraction has 46141 states and 178558 transitions. [2021-06-05 06:47:26,566 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 06:47:26,566 INFO L276 IsEmpty]: Start isEmpty. Operand 46141 states and 178558 transitions. [2021-06-05 06:47:26,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:26,637 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:26,637 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 06:47:26,837 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4134,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:26,838 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:26,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:26,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1338899459, now seen corresponding path program 161 times [2021-06-05 06:47:26,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:26,838 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351585701] [2021-06-05 06:47:26,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:26,874 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 06:47:26,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:26,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351585701] [2021-06-05 06:47:26,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351585701] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:26,874 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451128181] [2021-06-05 06:47:26,874 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 06:47:26,897 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 06:47:26,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:26,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:26,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:26,982 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 06:47:26,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451128181] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:26,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:26,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:47:26,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130891324] [2021-06-05 06:47:26,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:47:26,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:26,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:47:26,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:47:26,983 INFO L87 Difference]: Start difference. First operand 46141 states and 178558 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 06:47:28,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:28,232 INFO L93 Difference]: Finished difference Result 60232 states and 229011 transitions. [2021-06-05 06:47:28,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-05 06:47:28,233 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 06:47:28,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:28,403 INFO L225 Difference]: With dead ends: 60232 [2021-06-05 06:47:28,403 INFO L226 Difference]: Without dead ends: 60232 [2021-06-05 06:47:28,403 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 443.0ms TimeCoverageRelationStatistics Valid=608, Invalid=2148, Unknown=0, NotChecked=0, Total=2756 [2021-06-05 06:47:28,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60232 states. [2021-06-05 06:47:29,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60232 to 46157. [2021-06-05 06:47:29,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46157 states, 46156 states have (on average 3.8717826501429933) internal successors, (178706), 46156 states have internal predecessors, (178706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:29,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46157 states to 46157 states and 178706 transitions. [2021-06-05 06:47:29,769 INFO L78 Accepts]: Start accepts. Automaton has 46157 states and 178706 transitions. Word has length 28 [2021-06-05 06:47:29,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:29,769 INFO L482 AbstractCegarLoop]: Abstraction has 46157 states and 178706 transitions. [2021-06-05 06:47:29,769 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 06:47:29,770 INFO L276 IsEmpty]: Start isEmpty. Operand 46157 states and 178706 transitions. [2021-06-05 06:47:29,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:29,838 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:29,839 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 06:47:30,039 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4135,239 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:30,039 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:30,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:30,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1775748157, now seen corresponding path program 162 times [2021-06-05 06:47:30,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:30,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796813884] [2021-06-05 06:47:30,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:30,084 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 06:47:30,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:30,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796813884] [2021-06-05 06:47:30,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796813884] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:30,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338005086] [2021-06-05 06:47:30,084 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 06:47:30,108 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:47:30,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:30,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:30,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:30,185 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 06:47:30,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338005086] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:30,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:30,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:47:30,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847712094] [2021-06-05 06:47:30,185 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:47:30,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:30,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:47:30,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:47:30,186 INFO L87 Difference]: Start difference. First operand 46157 states and 178706 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 06:47:30,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:30,922 INFO L93 Difference]: Finished difference Result 59549 states and 227144 transitions. [2021-06-05 06:47:30,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-05 06:47:30,922 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 06:47:30,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:31,081 INFO L225 Difference]: With dead ends: 59549 [2021-06-05 06:47:31,081 INFO L226 Difference]: Without dead ends: 59537 [2021-06-05 06:47:31,081 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 336.8ms TimeCoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2021-06-05 06:47:31,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59537 states. [2021-06-05 06:47:32,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59537 to 46091. [2021-06-05 06:47:32,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46091 states, 46090 states have (on average 3.8729225428509437) internal successors, (178503), 46090 states have internal predecessors, (178503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:32,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46091 states to 46091 states and 178503 transitions. [2021-06-05 06:47:32,883 INFO L78 Accepts]: Start accepts. Automaton has 46091 states and 178503 transitions. Word has length 28 [2021-06-05 06:47:32,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:32,884 INFO L482 AbstractCegarLoop]: Abstraction has 46091 states and 178503 transitions. [2021-06-05 06:47:32,884 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 06:47:32,884 INFO L276 IsEmpty]: Start isEmpty. Operand 46091 states and 178503 transitions. [2021-06-05 06:47:32,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:32,954 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:32,954 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 06:47:33,154 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4136,240 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:33,155 INFO L430 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:33,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:33,155 INFO L82 PathProgramCache]: Analyzing trace with hash 517999999, now seen corresponding path program 163 times [2021-06-05 06:47:33,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:33,155 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306292573] [2021-06-05 06:47:33,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:33,192 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 06:47:33,192 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:33,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306292573] [2021-06-05 06:47:33,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306292573] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:33,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103423211] [2021-06-05 06:47:33,192 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 06:47:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:33,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:33,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:33,297 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 06:47:33,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103423211] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:33,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:33,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-06-05 06:47:33,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134318593] [2021-06-05 06:47:33,297 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-05 06:47:33,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:33,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-05 06:47:33,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-06-05 06:47:33,298 INFO L87 Difference]: Start difference. First operand 46091 states and 178503 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 06:47:33,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:33,942 INFO L93 Difference]: Finished difference Result 50569 states and 193277 transitions. [2021-06-05 06:47:33,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-05 06:47:33,943 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 06:47:33,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:34,080 INFO L225 Difference]: With dead ends: 50569 [2021-06-05 06:47:34,080 INFO L226 Difference]: Without dead ends: 50569 [2021-06-05 06:47:34,080 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 300.4ms TimeCoverageRelationStatistics Valid=323, Invalid=1159, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 06:47:34,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50569 states. [2021-06-05 06:47:35,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50569 to 46299. [2021-06-05 06:47:35,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46299 states, 46298 states have (on average 3.8704695667199447) internal successors, (179195), 46298 states have internal predecessors, (179195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:35,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46299 states to 46299 states and 179195 transitions. [2021-06-05 06:47:35,366 INFO L78 Accepts]: Start accepts. Automaton has 46299 states and 179195 transitions. Word has length 28 [2021-06-05 06:47:35,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:35,366 INFO L482 AbstractCegarLoop]: Abstraction has 46299 states and 179195 transitions. [2021-06-05 06:47:35,366 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 06:47:35,366 INFO L276 IsEmpty]: Start isEmpty. Operand 46299 states and 179195 transitions. [2021-06-05 06:47:35,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:35,440 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:35,440 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 06:47:35,641 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4137,241 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:35,641 INFO L430 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:35,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:35,641 INFO L82 PathProgramCache]: Analyzing trace with hash -480567967, now seen corresponding path program 164 times [2021-06-05 06:47:35,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:35,641 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860039306] [2021-06-05 06:47:35,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:35,674 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 06:47:35,674 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:35,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860039306] [2021-06-05 06:47:35,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860039306] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:35,674 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274721795] [2021-06-05 06:47:35,674 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 06:47:35,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:47:35,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:35,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:35,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:35,807 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 06:47:35,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274721795] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:35,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:35,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-06-05 06:47:35,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643915439] [2021-06-05 06:47:35,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-05 06:47:35,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:35,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-05 06:47:35,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-06-05 06:47:35,808 INFO L87 Difference]: Start difference. First operand 46299 states and 179195 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 06:47:36,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:36,627 INFO L93 Difference]: Finished difference Result 50416 states and 192879 transitions. [2021-06-05 06:47:36,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:47:36,628 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 06:47:36,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:36,774 INFO L225 Difference]: With dead ends: 50416 [2021-06-05 06:47:36,774 INFO L226 Difference]: Without dead ends: 50412 [2021-06-05 06:47:36,774 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 252.5ms TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:47:36,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50412 states. [2021-06-05 06:47:37,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50412 to 46239. [2021-06-05 06:47:37,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46239 states, 46238 states have (on average 3.8713395908127515) internal successors, (179003), 46238 states have internal predecessors, (179003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:38,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46239 states to 46239 states and 179003 transitions. [2021-06-05 06:47:38,038 INFO L78 Accepts]: Start accepts. Automaton has 46239 states and 179003 transitions. Word has length 28 [2021-06-05 06:47:38,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:38,039 INFO L482 AbstractCegarLoop]: Abstraction has 46239 states and 179003 transitions. [2021-06-05 06:47:38,039 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 06:47:38,039 INFO L276 IsEmpty]: Start isEmpty. Operand 46239 states and 179003 transitions. [2021-06-05 06:47:38,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:38,109 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:38,109 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 06:47:38,310 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4138,242 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:38,310 INFO L430 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:38,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:38,310 INFO L82 PathProgramCache]: Analyzing trace with hash -510371023, now seen corresponding path program 78 times [2021-06-05 06:47:38,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:38,310 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377164473] [2021-06-05 06:47:38,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:38,361 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 06:47:38,362 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:38,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377164473] [2021-06-05 06:47:38,362 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377164473] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:38,362 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414788835] [2021-06-05 06:47:38,362 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 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 06:47:38,384 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:47:38,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:38,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:38,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:38,431 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 06:47:38,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414788835] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:38,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:38,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-05 06:47:38,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360866428] [2021-06-05 06:47:38,432 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:47:38,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:38,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:47:38,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:47:38,432 INFO L87 Difference]: Start difference. First operand 46239 states and 179003 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 06:47:38,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:38,967 INFO L93 Difference]: Finished difference Result 50471 states and 192992 transitions. [2021-06-05 06:47:38,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-06-05 06:47:38,967 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 06:47:38,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:39,106 INFO L225 Difference]: With dead ends: 50471 [2021-06-05 06:47:39,106 INFO L226 Difference]: Without dead ends: 50471 [2021-06-05 06:47:39,107 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 199.7ms TimeCoverageRelationStatistics Valid=275, Invalid=781, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 06:47:39,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50471 states. [2021-06-05 06:47:40,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50471 to 46343. [2021-06-05 06:47:40,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46343 states, 46342 states have (on average 3.869643088343188) internal successors, (179327), 46342 states have internal predecessors, (179327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:40,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46343 states to 46343 states and 179327 transitions. [2021-06-05 06:47:40,468 INFO L78 Accepts]: Start accepts. Automaton has 46343 states and 179327 transitions. Word has length 28 [2021-06-05 06:47:40,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:40,468 INFO L482 AbstractCegarLoop]: Abstraction has 46343 states and 179327 transitions. [2021-06-05 06:47:40,468 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 06:47:40,468 INFO L276 IsEmpty]: Start isEmpty. Operand 46343 states and 179327 transitions. [2021-06-05 06:47:40,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:40,533 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:40,533 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 06:47:40,734 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4139 [2021-06-05 06:47:40,734 INFO L430 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:40,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:40,734 INFO L82 PathProgramCache]: Analyzing trace with hash 394977929, now seen corresponding path program 79 times [2021-06-05 06:47:40,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:40,734 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313613925] [2021-06-05 06:47:40,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:40,764 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 06:47:40,764 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:40,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313613925] [2021-06-05 06:47:40,764 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313613925] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:40,764 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544942410] [2021-06-05 06:47:40,764 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 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 06:47:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:40,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:40,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:41,171 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 06:47:41,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544942410] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:41,171 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:41,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-05 06:47:41,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751033953] [2021-06-05 06:47:41,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 06:47:41,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:41,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 06:47:41,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-05 06:47:41,172 INFO L87 Difference]: Start difference. First operand 46343 states and 179327 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 06:47:41,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:41,641 INFO L93 Difference]: Finished difference Result 50566 states and 193429 transitions. [2021-06-05 06:47:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:47:41,642 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 06:47:41,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:41,776 INFO L225 Difference]: With dead ends: 50566 [2021-06-05 06:47:41,777 INFO L226 Difference]: Without dead ends: 50554 [2021-06-05 06:47:41,777 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 144.2ms TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:47:41,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50554 states. [2021-06-05 06:47:42,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50554 to 46475. [2021-06-05 06:47:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46475 states, 46474 states have (on average 3.867861600034428) internal successors, (179755), 46474 states have internal predecessors, (179755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:43,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46475 states to 46475 states and 179755 transitions. [2021-06-05 06:47:43,136 INFO L78 Accepts]: Start accepts. Automaton has 46475 states and 179755 transitions. Word has length 28 [2021-06-05 06:47:43,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:43,137 INFO L482 AbstractCegarLoop]: Abstraction has 46475 states and 179755 transitions. [2021-06-05 06:47:43,137 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 06:47:43,137 INFO L276 IsEmpty]: Start isEmpty. Operand 46475 states and 179755 transitions. [2021-06-05 06:47:43,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:43,217 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:43,218 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 06:47:43,418 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 244 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4140 [2021-06-05 06:47:43,418 INFO L430 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:43,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:43,419 INFO L82 PathProgramCache]: Analyzing trace with hash -597515635, now seen corresponding path program 80 times [2021-06-05 06:47:43,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:43,419 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704741154] [2021-06-05 06:47:43,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:43,454 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 06:47:43,455 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:43,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704741154] [2021-06-05 06:47:43,455 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704741154] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:43,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158342405] [2021-06-05 06:47:43,455 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 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 06:47:43,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:47:43,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:43,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 06:47:43,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:43,522 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 06:47:43,522 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158342405] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:43,522 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:43,522 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2021-06-05 06:47:43,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669198204] [2021-06-05 06:47:43,522 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 06:47:43,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:43,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 06:47:43,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-05 06:47:43,523 INFO L87 Difference]: Start difference. First operand 46475 states and 179755 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 06:47:43,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:43,978 INFO L93 Difference]: Finished difference Result 50530 states and 193345 transitions. [2021-06-05 06:47:43,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 06:47:43,979 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 06:47:43,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:44,115 INFO L225 Difference]: With dead ends: 50530 [2021-06-05 06:47:44,115 INFO L226 Difference]: Without dead ends: 50510 [2021-06-05 06:47:44,115 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 155.9ms TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2021-06-05 06:47:44,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50510 states. [2021-06-05 06:47:45,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50510 to 46475. [2021-06-05 06:47:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46475 states, 46474 states have (on average 3.867775530404097) internal successors, (179751), 46474 states have internal predecessors, (179751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:45,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46475 states to 46475 states and 179751 transitions. [2021-06-05 06:47:45,411 INFO L78 Accepts]: Start accepts. Automaton has 46475 states and 179751 transitions. Word has length 28 [2021-06-05 06:47:45,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:45,411 INFO L482 AbstractCegarLoop]: Abstraction has 46475 states and 179751 transitions. [2021-06-05 06:47:45,411 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 06:47:45,411 INFO L276 IsEmpty]: Start isEmpty. Operand 46475 states and 179751 transitions. [2021-06-05 06:47:45,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:45,803 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:45,803 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 06:47:46,016 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4141 [2021-06-05 06:47:46,017 INFO L430 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:46,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:46,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1058352779, now seen corresponding path program 165 times [2021-06-05 06:47:46,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:46,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081840354] [2021-06-05 06:47:46,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:46,049 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 06:47:46,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:46,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081840354] [2021-06-05 06:47:46,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081840354] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:46,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912579454] [2021-06-05 06:47:46,049 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 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 06:47:46,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 06:47:46,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:46,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:47:46,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:46,126 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 06:47:46,127 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912579454] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:46,127 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:46,127 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:47:46,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050904157] [2021-06-05 06:47:46,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:47:46,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:46,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:47:46,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:47:46,127 INFO L87 Difference]: Start difference. First operand 46475 states and 179751 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 06:47:46,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:46,559 INFO L93 Difference]: Finished difference Result 51418 states and 197281 transitions. [2021-06-05 06:47:46,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:47:46,559 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 06:47:46,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:46,698 INFO L225 Difference]: With dead ends: 51418 [2021-06-05 06:47:46,698 INFO L226 Difference]: Without dead ends: 51415 [2021-06-05 06:47:46,698 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 121.5ms TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:47:46,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51415 states. [2021-06-05 06:47:47,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51415 to 48550. [2021-06-05 06:47:47,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48550 states, 48549 states have (on average 3.876434118107479) internal successors, (188197), 48549 states have internal predecessors, (188197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:47,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48550 states to 48550 states and 188197 transitions. [2021-06-05 06:47:47,908 INFO L78 Accepts]: Start accepts. Automaton has 48550 states and 188197 transitions. Word has length 28 [2021-06-05 06:47:47,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:47,908 INFO L482 AbstractCegarLoop]: Abstraction has 48550 states and 188197 transitions. [2021-06-05 06:47:47,908 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 06:47:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 48550 states and 188197 transitions. [2021-06-05 06:47:47,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:47,976 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:47,976 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 06:47:48,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4142,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:48,177 INFO L430 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:48,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:48,177 INFO L82 PathProgramCache]: Analyzing trace with hash 287300907, now seen corresponding path program 166 times [2021-06-05 06:47:48,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:48,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494884107] [2021-06-05 06:47:48,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:48,209 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 06:47:48,209 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:48,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494884107] [2021-06-05 06:47:48,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494884107] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:48,209 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299341654] [2021-06-05 06:47:48,210 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 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 06:47:48,231 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:47:48,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:48,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:47:48,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:48,290 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 06:47:48,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299341654] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:48,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:48,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:47:48,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437901016] [2021-06-05 06:47:48,290 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:47:48,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:48,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:47:48,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:47:48,291 INFO L87 Difference]: Start difference. First operand 48550 states and 188197 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 06:47:48,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:48,770 INFO L93 Difference]: Finished difference Result 54116 states and 206168 transitions. [2021-06-05 06:47:48,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 06:47:48,770 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 06:47:48,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:49,207 INFO L225 Difference]: With dead ends: 54116 [2021-06-05 06:47:49,207 INFO L226 Difference]: Without dead ends: 54116 [2021-06-05 06:47:49,208 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 150.6ms TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2021-06-05 06:47:49,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54116 states. [2021-06-05 06:47:49,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54116 to 43065. [2021-06-05 06:47:50,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43065 states, 43064 states have (on average 3.8637609139884823) internal successors, (166389), 43064 states have internal predecessors, (166389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:50,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43065 states to 43065 states and 166389 transitions. [2021-06-05 06:47:50,495 INFO L78 Accepts]: Start accepts. Automaton has 43065 states and 166389 transitions. Word has length 28 [2021-06-05 06:47:50,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:50,495 INFO L482 AbstractCegarLoop]: Abstraction has 43065 states and 166389 transitions. [2021-06-05 06:47:50,495 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 06:47:50,495 INFO L276 IsEmpty]: Start isEmpty. Operand 43065 states and 166389 transitions. [2021-06-05 06:47:50,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:50,576 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:50,576 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 06:47:50,776 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 247 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4143 [2021-06-05 06:47:50,777 INFO L430 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:50,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:50,777 INFO L82 PathProgramCache]: Analyzing trace with hash 811277253, now seen corresponding path program 167 times [2021-06-05 06:47:50,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:50,777 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192483141] [2021-06-05 06:47:50,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:50,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:50,810 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:50,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:50,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192483141] [2021-06-05 06:47:50,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192483141] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:50,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652306821] [2021-06-05 06:47:50,810 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 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 06:47:50,832 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:47:50,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:50,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:47:50,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:50,892 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 06:47:50,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652306821] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:50,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:50,893 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-06-05 06:47:50,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741460498] [2021-06-05 06:47:50,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:47:50,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:50,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:47:50,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:47:50,893 INFO L87 Difference]: Start difference. First operand 43065 states and 166389 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 06:47:51,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:51,411 INFO L93 Difference]: Finished difference Result 47945 states and 182818 transitions. [2021-06-05 06:47:51,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-05 06:47:51,411 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 06:47:51,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:51,525 INFO L225 Difference]: With dead ends: 47945 [2021-06-05 06:47:51,525 INFO L226 Difference]: Without dead ends: 47945 [2021-06-05 06:47:51,526 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 06:47:51,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47945 states. [2021-06-05 06:47:52,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47945 to 43898. [2021-06-05 06:47:52,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43898 states, 43897 states have (on average 3.8623823951522884) internal successors, (169547), 43897 states have internal predecessors, (169547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:52,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43898 states to 43898 states and 169547 transitions. [2021-06-05 06:47:52,615 INFO L78 Accepts]: Start accepts. Automaton has 43898 states and 169547 transitions. Word has length 28 [2021-06-05 06:47:52,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:52,615 INFO L482 AbstractCegarLoop]: Abstraction has 43898 states and 169547 transitions. [2021-06-05 06:47:52,615 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 06:47:52,615 INFO L276 IsEmpty]: Start isEmpty. Operand 43898 states and 169547 transitions. [2021-06-05 06:47:52,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:52,692 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:52,692 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 06:47:52,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 248 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4144 [2021-06-05 06:47:52,897 INFO L430 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:52,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:52,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1041987733, now seen corresponding path program 168 times [2021-06-05 06:47:52,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:52,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60413531] [2021-06-05 06:47:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:52,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:52,935 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 06:47:52,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:52,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60413531] [2021-06-05 06:47:52,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60413531] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:52,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664459640] [2021-06-05 06:47:52,936 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 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 06:47:52,958 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:47:52,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:52,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:47:52,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:53,013 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 06:47:53,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664459640] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:53,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:53,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-06-05 06:47:53,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960861275] [2021-06-05 06:47:53,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 06:47:53,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:53,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 06:47:53,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-06-05 06:47:53,014 INFO L87 Difference]: Start difference. First operand 43898 states and 169547 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 06:47:53,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:53,400 INFO L93 Difference]: Finished difference Result 45655 states and 175408 transitions. [2021-06-05 06:47:53,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 06:47:53,400 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 06:47:53,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:53,512 INFO L225 Difference]: With dead ends: 45655 [2021-06-05 06:47:53,512 INFO L226 Difference]: Without dead ends: 45655 [2021-06-05 06:47:53,512 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 134.3ms TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:47:53,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45655 states. [2021-06-05 06:47:54,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45655 to 43906. [2021-06-05 06:47:54,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43906 states, 43905 states have (on average 3.862225259082109) internal successors, (169571), 43905 states have internal predecessors, (169571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:54,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43906 states to 43906 states and 169571 transitions. [2021-06-05 06:47:54,680 INFO L78 Accepts]: Start accepts. Automaton has 43906 states and 169571 transitions. Word has length 28 [2021-06-05 06:47:54,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:54,680 INFO L482 AbstractCegarLoop]: Abstraction has 43906 states and 169571 transitions. [2021-06-05 06:47:54,680 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 06:47:54,680 INFO L276 IsEmpty]: Start isEmpty. Operand 43906 states and 169571 transitions. [2021-06-05 06:47:54,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-06-05 06:47:54,749 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:54,749 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 06:47:54,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 249 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4145 [2021-06-05 06:47:54,950 INFO L430 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:54,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:54,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1139256197, now seen corresponding path program 169 times [2021-06-05 06:47:54,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:54,950 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616783600] [2021-06-05 06:47:54,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:54,984 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 06:47:54,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:54,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616783600] [2021-06-05 06:47:54,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616783600] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:54,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589367423] [2021-06-05 06:47:54,985 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 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 06:47:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:55,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-05 06:47:55,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:55,067 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 06:47:55,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589367423] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:55,067 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:47:55,067 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-06-05 06:47:55,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694358867] [2021-06-05 06:47:55,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 06:47:55,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:47:55,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 06:47:55,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-06-05 06:47:55,068 INFO L87 Difference]: Start difference. First operand 43906 states and 169571 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 06:47:55,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:47:55,862 INFO L93 Difference]: Finished difference Result 45371 states and 174477 transitions. [2021-06-05 06:47:55,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 06:47:55,862 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 06:47:55,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:47:55,981 INFO L225 Difference]: With dead ends: 45371 [2021-06-05 06:47:55,981 INFO L226 Difference]: Without dead ends: 45371 [2021-06-05 06:47:55,981 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 130.3ms TimeCoverageRelationStatistics Valid=162, Invalid=390, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:47:56,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45371 states. [2021-06-05 06:47:56,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45371 to 43796. [2021-06-05 06:47:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43796 states, 43795 states have (on average 3.8620390455531455) internal successors, (169138), 43795 states have internal predecessors, (169138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:47:57,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43796 states to 43796 states and 169138 transitions. [2021-06-05 06:47:57,209 INFO L78 Accepts]: Start accepts. Automaton has 43796 states and 169138 transitions. Word has length 28 [2021-06-05 06:47:57,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:47:57,209 INFO L482 AbstractCegarLoop]: Abstraction has 43796 states and 169138 transitions. [2021-06-05 06:47:57,209 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 06:47:57,209 INFO L276 IsEmpty]: Start isEmpty. Operand 43796 states and 169138 transitions. [2021-06-05 06:47:57,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:47:57,286 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:47:57,286 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, 1, 1] [2021-06-05 06:47:57,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4146,250 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:47:57,487 INFO L430 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:47:57,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:47:57,487 INFO L82 PathProgramCache]: Analyzing trace with hash -993746325, now seen corresponding path program 170 times [2021-06-05 06:47:57,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:47:57,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134057055] [2021-06-05 06:47:57,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:47:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:47:57,802 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2021-06-05 06:47:58,072 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2021-06-05 06:47:58,339 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 63 [2021-06-05 06:47:58,574 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 06:47:58,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:47:58,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134057055] [2021-06-05 06:47:58,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134057055] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:47:58,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015905399] [2021-06-05 06:47:58,574 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 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 06:47:58,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:47:58,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:47:58,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 06:47:58,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:47:58,925 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-06-05 06:47:59,129 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 06:47:59,412 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 102 [2021-06-05 06:47:59,621 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-05 06:47:59,833 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 06:48:00,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:00,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:00,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:00,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:00,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2021-06-05 06:48:00,259 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:00,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:00,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:00,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:00,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 16 [2021-06-05 06:48:00,269 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:00,581 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 110 [2021-06-05 06:48:00,581 INFO L628 ElimStorePlain]: treesize reduction 342, result has 42.2 percent of original size [2021-06-05 06:48:00,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:00,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:00,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:00,589 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2021-06-05 06:48:00,590 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:00,677 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:00,677 INFO L518 ElimStorePlain]: Eliminatee v_prenex_561 vanished before elimination [2021-06-05 06:48:00,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:00,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:00,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:00,684 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 06:48:00,685 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:00,762 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:00,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:00,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:00,769 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 30 treesize of output 16 [2021-06-05 06:48:00,770 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:00,838 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:00,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:00,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:00,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:48:00,845 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:00,911 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:00,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:00,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:00,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:00,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:00,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:00,918 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 30 treesize of output 16 [2021-06-05 06:48:00,919 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:00,975 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:00,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:00,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:00,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:48:00,982 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:01,033 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:01,037 INFO L550 ElimStorePlain]: Start of recursive call 1: 16 dim-0 vars, 8 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:48:01,037 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 24 variables, input treesize:668, output treesize:36 [2021-06-05 06:48:01,077 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 06:48:01,077 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015905399] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:01,077 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:01,077 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-05 06:48:01,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608665522] [2021-06-05 06:48:01,077 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:48:01,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:01,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:48:01,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:48:01,078 INFO L87 Difference]: Start difference. First operand 43796 states and 169138 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 06:48:01,460 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 48 [2021-06-05 06:48:01,830 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 91 [2021-06-05 06:48:02,309 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2021-06-05 06:48:02,531 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 76 [2021-06-05 06:48:02,806 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 58 [2021-06-05 06:48:03,459 WARN L205 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 100 [2021-06-05 06:48:04,152 WARN L205 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 79 [2021-06-05 06:48:04,360 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2021-06-05 06:48:05,063 WARN L205 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 111 [2021-06-05 06:48:05,423 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 104 [2021-06-05 06:48:05,912 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 105 [2021-06-05 06:48:06,848 WARN L205 SmtUtils]: Spent 838.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 157 [2021-06-05 06:48:07,191 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2021-06-05 06:48:07,572 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2021-06-05 06:48:07,864 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2021-06-05 06:48:08,308 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2021-06-05 06:48:08,597 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2021-06-05 06:48:08,840 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 46 [2021-06-05 06:48:09,224 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 41 [2021-06-05 06:48:09,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:09,442 INFO L93 Difference]: Finished difference Result 53704 states and 203394 transitions. [2021-06-05 06:48:09,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-05 06:48:09,443 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 06:48:09,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:09,581 INFO L225 Difference]: With dead ends: 53704 [2021-06-05 06:48:09,581 INFO L226 Difference]: Without dead ends: 53629 [2021-06-05 06:48:09,581 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 9093.9ms TimeCoverageRelationStatistics Valid=421, Invalid=1835, Unknown=0, NotChecked=0, Total=2256 [2021-06-05 06:48:09,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53629 states. [2021-06-05 06:48:10,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53629 to 43931. [2021-06-05 06:48:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43931 states, 43930 states have (on average 3.8612110175278853) internal successors, (169623), 43930 states have internal predecessors, (169623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:10,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43931 states to 43931 states and 169623 transitions. [2021-06-05 06:48:10,618 INFO L78 Accepts]: Start accepts. Automaton has 43931 states and 169623 transitions. Word has length 30 [2021-06-05 06:48:10,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:10,618 INFO L482 AbstractCegarLoop]: Abstraction has 43931 states and 169623 transitions. [2021-06-05 06:48:10,618 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 06:48:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand 43931 states and 169623 transitions. [2021-06-05 06:48:10,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:48:10,682 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:10,682 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 06:48:10,882 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4147,251 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:48:10,883 INFO L430 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:10,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:10,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1272822955, now seen corresponding path program 171 times [2021-06-05 06:48:10,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:10,883 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130609184] [2021-06-05 06:48:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:11,295 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2021-06-05 06:48:11,767 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 06:48:11,767 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:11,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130609184] [2021-06-05 06:48:11,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130609184] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:11,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156106696] [2021-06-05 06:48:11,768 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 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 06:48:11,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:48:11,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:11,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 06:48:11,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:12,129 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-06-05 06:48:12,330 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 06:48:12,891 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 105 [2021-06-05 06:48:13,572 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-06-05 06:48:13,884 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:48:13,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:48:13,890 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:15,289 WARN L205 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 354 DAG size of output: 338 [2021-06-05 06:48:15,290 INFO L628 ElimStorePlain]: treesize reduction 310, result has 77.1 percent of original size [2021-06-05 06:48:15,354 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:48:15,355 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 43 [2021-06-05 06:48:15,356 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:15,923 WARN L205 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 341 [2021-06-05 06:48:15,924 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:15,997 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 06:48:15,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:48:16,016 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:17,160 WARN L205 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 338 DAG size of output: 333 [2021-06-05 06:48:17,161 INFO L628 ElimStorePlain]: treesize reduction 9, result has 99.1 percent of original size [2021-06-05 06:48:17,242 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:48:17,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:48:17,260 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:17,339 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 06:48:17,339 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 55 [2021-06-05 06:48:17,346 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:18,402 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 344 DAG size of output: 330 [2021-06-05 06:48:18,403 INFO L628 ElimStorePlain]: treesize reduction 77, result has 92.5 percent of original size [2021-06-05 06:48:18,475 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:48:18,475 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 37 treesize of output 47 [2021-06-05 06:48:18,478 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:18,508 INFO L354 Elim1Store]: treesize reduction 40, result has 2.4 percent of original size [2021-06-05 06:48:18,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:48:18,509 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:18,972 WARN L205 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2021-06-05 06:48:18,972 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:19,070 INFO L354 Elim1Store]: treesize reduction 8, result has 80.5 percent of original size [2021-06-05 06:48:19,070 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 51 [2021-06-05 06:48:19,083 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:19,182 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 06:48:19,182 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 55 [2021-06-05 06:48:19,190 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:20,083 WARN L205 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 337 DAG size of output: 325 [2021-06-05 06:48:20,083 INFO L628 ElimStorePlain]: treesize reduction 68, result has 92.5 percent of original size [2021-06-05 06:48:20,149 INFO L354 Elim1Store]: treesize reduction 20, result has 51.2 percent of original size [2021-06-05 06:48:20,149 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 39 [2021-06-05 06:48:20,151 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:20,217 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:48:20,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 47 [2021-06-05 06:48:20,220 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:21,049 WARN L205 SmtUtils]: Spent 828.00 ms on a formula simplification. DAG size of input: 325 DAG size of output: 324 [2021-06-05 06:48:21,050 INFO L628 ElimStorePlain]: treesize reduction 45, result has 94.6 percent of original size [2021-06-05 06:48:21,099 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:21,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:48:21,121 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:21,512 WARN L205 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 315 [2021-06-05 06:48:21,513 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:21,580 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:48:21,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:48:21,601 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:22,014 WARN L205 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 311 [2021-06-05 06:48:22,014 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:22,061 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:22,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:48:22,072 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:22,427 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 300 [2021-06-05 06:48:22,428 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:22,481 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:48:22,482 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 4 new quantified variables, introduced 5 case distinctions, treesize of input 33 treesize of output 43 [2021-06-05 06:48:22,485 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:22,840 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 297 [2021-06-05 06:48:22,840 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:22,897 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:48:22,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:48:22,902 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:23,255 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2021-06-05 06:48:23,256 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:23,308 INFO L354 Elim1Store]: treesize reduction 12, result has 70.7 percent of original size [2021-06-05 06:48:23,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:48:23,314 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:23,668 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 288 [2021-06-05 06:48:23,668 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:23,732 INFO L354 Elim1Store]: treesize reduction 4, result has 90.2 percent of original size [2021-06-05 06:48:23,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 06:48:23,744 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:24,408 WARN L205 SmtUtils]: Spent 664.00 ms on a formula simplification. DAG size of input: 289 DAG size of output: 279 [2021-06-05 06:48:24,409 INFO L628 ElimStorePlain]: treesize reduction 26, result has 96.2 percent of original size [2021-06-05 06:48:24,464 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:48:24,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable 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 43 [2021-06-05 06:48:24,467 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:24,798 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2021-06-05 06:48:24,798 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:24,852 INFO L354 Elim1Store]: treesize reduction 16, result has 61.0 percent of original size [2021-06-05 06:48:24,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 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 06:48:24,854 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:25,189 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 276 [2021-06-05 06:48:25,190 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:25,260 INFO L550 ElimStorePlain]: Start of recursive call 1: 32 dim-0 vars, 16 dim-1 vars, End of recursive call: and 19 xjuncts. [2021-06-05 06:48:25,261 INFO L247 ElimStorePlain]: Needed 21 recursive calls to eliminate 48 variables, input treesize:1363, output treesize:907 [2021-06-05 06:48:25,544 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 35 [2021-06-05 06:48:25,595 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 06:48:25,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156106696] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:25,595 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:25,596 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 23 [2021-06-05 06:48:25,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50798930] [2021-06-05 06:48:25,596 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-05 06:48:25,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:25,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-05 06:48:25,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2021-06-05 06:48:25,596 INFO L87 Difference]: Start difference. First operand 43931 states and 169623 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 06:48:26,027 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2021-06-05 06:48:26,311 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 06:48:26,766 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2021-06-05 06:48:27,044 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2021-06-05 06:48:27,232 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 61 [2021-06-05 06:48:27,420 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 50 [2021-06-05 06:48:27,678 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 06:48:27,883 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 62 [2021-06-05 06:48:28,178 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2021-06-05 06:48:28,987 WARN L205 SmtUtils]: Spent 732.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 123 [2021-06-05 06:48:29,503 WARN L205 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 82 [2021-06-05 06:48:29,688 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 53 [2021-06-05 06:48:30,665 WARN L205 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 109 [2021-06-05 06:48:31,624 WARN L205 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 148 [2021-06-05 06:48:32,560 WARN L205 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 134 [2021-06-05 06:48:33,014 WARN L205 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2021-06-05 06:48:33,496 WARN L205 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2021-06-05 06:48:33,810 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 66 [2021-06-05 06:48:34,008 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2021-06-05 06:48:34,488 WARN L205 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 107 [2021-06-05 06:48:36,104 WARN L205 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 186 DAG size of output: 173 [2021-06-05 06:48:36,623 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 40 [2021-06-05 06:48:36,887 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 33 [2021-06-05 06:48:37,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:37,123 INFO L93 Difference]: Finished difference Result 53564 states and 203065 transitions. [2021-06-05 06:48:37,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-06-05 06:48:37,123 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 06:48:37,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:37,251 INFO L225 Difference]: With dead ends: 53564 [2021-06-05 06:48:37,251 INFO L226 Difference]: Without dead ends: 53534 [2021-06-05 06:48:37,251 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 993 ImplicationChecksByTransitivity, 12318.5ms TimeCoverageRelationStatistics Valid=512, Invalid=3148, Unknown=0, NotChecked=0, Total=3660 [2021-06-05 06:48:37,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53534 states. [2021-06-05 06:48:38,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53534 to 43946. [2021-06-05 06:48:38,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43946 states, 43945 states have (on average 3.8610080782796676) internal successors, (169672), 43945 states have internal predecessors, (169672), 0 states have call successors, (0), 0 states have call 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 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43946 states to 43946 states and 169672 transitions. [2021-06-05 06:48:38,222 INFO L78 Accepts]: Start accepts. Automaton has 43946 states and 169672 transitions. Word has length 30 [2021-06-05 06:48:38,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:38,222 INFO L482 AbstractCegarLoop]: Abstraction has 43946 states and 169672 transitions. [2021-06-05 06:48:38,222 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 06:48:38,222 INFO L276 IsEmpty]: Start isEmpty. Operand 43946 states and 169672 transitions. [2021-06-05 06:48:38,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:48:38,291 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:38,291 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 06:48:38,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4188 [2021-06-05 06:48:38,492 INFO L430 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:38,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:38,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1430715033, now seen corresponding path program 172 times [2021-06-05 06:48:38,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:38,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572791919] [2021-06-05 06:48:38,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:38,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:39,214 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2021-06-05 06:48:39,451 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 06:48:39,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:39,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572791919] [2021-06-05 06:48:39,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572791919] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:39,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690975551] [2021-06-05 06:48:39,451 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 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 06:48:39,477 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 06:48:39,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:39,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 06:48:39,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:40,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,649 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,651 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,652 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 46 treesize of output 22 [2021-06-05 06:48:40,652 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:40,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,660 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,665 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 06:48:40,665 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:40,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,677 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,677 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 06:48:40,678 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:40,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,684 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,690 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 06:48:40,690 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:40,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,826 INFO L244 Elim1Store]: Index analysis took 130 ms [2021-06-05 06:48:40,827 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 06:48:40,827 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:40,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,835 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,839 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 06:48:40,839 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:40,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,847 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,850 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,851 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 51 treesize of output 25 [2021-06-05 06:48:40,851 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:40,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,863 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 06:48:40,863 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:40,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,871 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,873 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,875 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,875 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 06:48:40,875 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:40,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,882 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,885 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,886 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,887 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 06:48:40,888 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:40,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,899 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 06:48:40,900 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:40,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,906 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,909 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,911 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 06:48:40,912 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:40,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,923 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 06:48:40,924 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:40,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,935 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 06:48:40,936 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:40,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,943 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,948 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 06:48:40,948 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:40,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,960 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,960 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 06:48:40,961 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:40,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,971 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,973 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 48 treesize of output 22 [2021-06-05 06:48:40,973 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:40,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,985 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 06:48:40,986 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:40,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:40,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,995 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:40,998 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 06:48:40,999 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,011 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 06:48:41,012 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,024 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 06:48:41,025 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,038 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 06:48:41,038 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,051 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 22 [2021-06-05 06:48:41,051 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,063 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 16 [2021-06-05 06:48:41,064 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,076 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 06:48:41,077 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,089 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 06:48:41,089 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,101 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 06:48:41,102 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,113 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 06:48:41,114 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,127 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 22 [2021-06-05 06:48:41,127 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,137 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 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 06:48:41,140 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,146 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,152 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 44 treesize of output 19 [2021-06-05 06:48:41,152 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,163 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,164 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 06:48:41,164 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,176 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 06:48:41,177 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,188 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 48 treesize of output 19 [2021-06-05 06:48:41,189 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,200 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,200 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 06:48:41,201 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,207 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,212 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 06:48:41,214 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,220 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,225 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 06:48:41,225 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,237 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 06:48:41,238 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,251 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 06:48:41,251 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,263 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 06:48:41,264 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,276 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 16 [2021-06-05 06:48:41,277 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,291 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,291 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 22 [2021-06-05 06:48:41,292 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,300 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,305 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 22 [2021-06-05 06:48:41,306 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,318 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,318 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 06:48:41,319 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,325 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,330 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 53 treesize of output 25 [2021-06-05 06:48:41,331 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,338 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,343 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 06:48:41,344 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,356 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 06:48:41,356 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,368 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,368 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 06:48:41,369 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,381 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 22 [2021-06-05 06:48:41,381 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,393 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 22 [2021-06-05 06:48:41,394 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,400 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,402 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,406 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 06:48:41,407 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,419 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 06:48:41,419 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,432 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 06:48:41,433 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,453 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,457 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 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 06:48:41,461 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,472 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, 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 06:48:41,476 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,492 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 06:48:41,493 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,500 INFO L190 IndexEqualityManager]: detected not equals via solver [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 06:48:41,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,505 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 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 06:48:41,510 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,524 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, 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 19 [2021-06-05 06:48:41,526 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 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 06:48:41,541 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,548 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,555 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 06:48:41,556 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,569 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 06:48:41,570 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,583 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 06:48:41,584 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:41,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:41,590 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 06:48:41,591 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:41,616 INFO L628 ElimStorePlain]: treesize reduction 39, result has 35.0 percent of original size [2021-06-05 06:48:41,618 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 06:48:41,618 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3328, output treesize:15 [2021-06-05 06:48:41,661 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 06:48:41,661 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690975551] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:41,661 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:41,661 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-06-05 06:48:41,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244439485] [2021-06-05 06:48:41,661 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:48:41,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:41,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:48:41,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:48:41,662 INFO L87 Difference]: Start difference. First operand 43946 states and 169672 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 06:48:42,240 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2021-06-05 06:48:42,461 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 64 [2021-06-05 06:48:42,827 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 67 [2021-06-05 06:48:43,291 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 70 [2021-06-05 06:48:43,635 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 88 [2021-06-05 06:48:43,947 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 79 [2021-06-05 06:48:44,328 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 73 [2021-06-05 06:48:44,752 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 68 [2021-06-05 06:48:45,112 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 86 [2021-06-05 06:48:45,252 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 59 [2021-06-05 06:48:45,585 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 77 [2021-06-05 06:48:45,918 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 82 [2021-06-05 06:48:46,049 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2021-06-05 06:48:46,325 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 71 [2021-06-05 06:48:46,584 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 74 [2021-06-05 06:48:46,883 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 76 [2021-06-05 06:48:47,183 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2021-06-05 06:48:47,348 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 06:48:47,517 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 59 [2021-06-05 06:48:47,984 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 72 [2021-06-05 06:48:48,153 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2021-06-05 06:48:48,464 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 77 [2021-06-05 06:48:48,797 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2021-06-05 06:48:48,983 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2021-06-05 06:48:49,160 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2021-06-05 06:48:49,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:48:49,680 INFO L93 Difference]: Finished difference Result 55841 states and 209381 transitions. [2021-06-05 06:48:49,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-06-05 06:48:49,681 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 06:48:49,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:48:49,823 INFO L225 Difference]: With dead ends: 55841 [2021-06-05 06:48:49,823 INFO L226 Difference]: Without dead ends: 55811 [2021-06-05 06:48:49,824 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1060 ImplicationChecksByTransitivity, 8082.4ms TimeCoverageRelationStatistics Valid=553, Invalid=3229, Unknown=0, NotChecked=0, Total=3782 [2021-06-05 06:48:49,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55811 states. [2021-06-05 06:48:50,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55811 to 43990. [2021-06-05 06:48:50,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43990 states, 43989 states have (on average 3.860851576530496) internal successors, (169835), 43989 states have internal predecessors, (169835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:48:50,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43990 states to 43990 states and 169835 transitions. [2021-06-05 06:48:50,864 INFO L78 Accepts]: Start accepts. Automaton has 43990 states and 169835 transitions. Word has length 30 [2021-06-05 06:48:50,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:48:50,864 INFO L482 AbstractCegarLoop]: Abstraction has 43990 states and 169835 transitions. [2021-06-05 06:48:50,864 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 06:48:50,864 INFO L276 IsEmpty]: Start isEmpty. Operand 43990 states and 169835 transitions. [2021-06-05 06:48:50,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:48:50,935 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:48:50,935 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, 1, 1] [2021-06-05 06:48:51,135 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 253 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4351 [2021-06-05 06:48:51,135 INFO L430 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:48:51,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:48:51,136 INFO L82 PathProgramCache]: Analyzing trace with hash 924713707, now seen corresponding path program 173 times [2021-06-05 06:48:51,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:48:51,136 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656429504] [2021-06-05 06:48:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:48:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:48:51,691 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-06-05 06:48:51,843 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2021-06-05 06:48:51,931 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 06:48:51,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:48:51,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656429504] [2021-06-05 06:48:51,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656429504] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:51,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048594235] [2021-06-05 06:48:51,931 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 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 06:48:51,958 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-05 06:48:51,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:48:51,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-05 06:48:51,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:48:52,217 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2021-06-05 06:48:52,403 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-06-05 06:48:52,605 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-05 06:48:52,873 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-05 06:48:53,285 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2021-06-05 06:48:53,802 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-06-05 06:48:54,261 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 170 [2021-06-05 06:48:55,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,004 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,011 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,012 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 06:48:55,013 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,034 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2021-06-05 06:48:55,035 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,056 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 16 [2021-06-05 06:48:55,057 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,075 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 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 16 [2021-06-05 06:48:55,076 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,099 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 37 treesize of output 19 [2021-06-05 06:48:55,099 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,119 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 31 treesize of output 16 [2021-06-05 06:48:55,121 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,131 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,135 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,136 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 37 treesize of output 19 [2021-06-05 06:48:55,137 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,148 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,149 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 16 [2021-06-05 06:48:55,150 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,394 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 108 [2021-06-05 06:48:55,394 INFO L628 ElimStorePlain]: treesize reduction 256, result has 50.7 percent of original size [2021-06-05 06:48:55,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,401 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,405 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 06:48:55,406 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:48:55,418 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:48:55,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,427 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, 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 06:48:55,429 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:48:55,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:48:55,437 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:48:55,507 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:48:55,512 INFO L550 ElimStorePlain]: Start of recursive call 1: 34 dim-0 vars, 2 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:48:55,512 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 36 variables, input treesize:845, output treesize:36 [2021-06-05 06:48:55,566 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 06:48:55,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048594235] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:48:55,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:48:55,567 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2021-06-05 06:48:55,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872607366] [2021-06-05 06:48:55,567 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-06-05 06:48:55,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:48:55,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-06-05 06:48:55,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2021-06-05 06:48:55,567 INFO L87 Difference]: Start difference. First operand 43990 states and 169835 transitions. Second operand has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 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 06:48:56,412 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2021-06-05 06:48:56,685 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 73 [2021-06-05 06:48:58,181 WARN L205 SmtUtils]: Spent 752.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 102 [2021-06-05 06:48:58,865 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 85 [2021-06-05 06:48:59,205 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 84 [2021-06-05 06:48:59,462 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2021-06-05 06:49:00,504 WARN L205 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 100 [2021-06-05 06:49:01,316 WARN L205 SmtUtils]: Spent 743.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 128 [2021-06-05 06:49:01,509 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 56 [2021-06-05 06:49:01,802 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 77 [2021-06-05 06:49:02,069 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 59 [2021-06-05 06:49:03,451 WARN L205 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 149 DAG size of output: 115 [2021-06-05 06:49:03,626 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 06:49:04,472 WARN L205 SmtUtils]: Spent 772.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 105 [2021-06-05 06:49:04,895 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 87 [2021-06-05 06:49:05,194 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 66 [2021-06-05 06:49:06,157 WARN L205 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 114 [2021-06-05 06:49:07,476 WARN L205 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 221 DAG size of output: 143 [2021-06-05 06:49:07,786 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2021-06-05 06:49:08,819 WARN L205 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 103 [2021-06-05 06:49:09,708 WARN L205 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 131 [2021-06-05 06:49:10,238 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 80 [2021-06-05 06:49:10,611 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 114 [2021-06-05 06:49:10,837 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 06:49:11,884 WARN L205 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 117 [2021-06-05 06:49:12,498 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 125 [2021-06-05 06:49:12,763 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 63 [2021-06-05 06:49:13,160 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 118 [2021-06-05 06:49:14,208 WARN L205 SmtUtils]: Spent 801.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 130 [2021-06-05 06:49:14,857 WARN L205 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 126 [2021-06-05 06:49:15,610 WARN L205 SmtUtils]: Spent 687.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 123 [2021-06-05 06:49:16,210 WARN L205 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 260 DAG size of output: 195 [2021-06-05 06:49:16,933 WARN L205 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 195 [2021-06-05 06:49:17,621 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 188 [2021-06-05 06:49:18,152 WARN L205 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 192 [2021-06-05 06:49:18,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:49:18,477 INFO L93 Difference]: Finished difference Result 69300 states and 257529 transitions. [2021-06-05 06:49:18,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-06-05 06:49:18,479 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 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 06:49:18,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:49:18,655 INFO L225 Difference]: With dead ends: 69300 [2021-06-05 06:49:18,655 INFO L226 Difference]: Without dead ends: 69270 [2021-06-05 06:49:18,656 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1709 ImplicationChecksByTransitivity, 22725.6ms TimeCoverageRelationStatistics Valid=668, Invalid=5184, Unknown=0, NotChecked=0, Total=5852 [2021-06-05 06:49:18,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69270 states. [2021-06-05 06:49:19,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69270 to 44041. [2021-06-05 06:49:19,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44041 states, 44040 states have (on average 3.86030881017257) internal successors, (170008), 44040 states have internal predecessors, (170008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:19,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44041 states to 44041 states and 170008 transitions. [2021-06-05 06:49:19,835 INFO L78 Accepts]: Start accepts. Automaton has 44041 states and 170008 transitions. Word has length 30 [2021-06-05 06:49:19,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:49:19,835 INFO L482 AbstractCegarLoop]: Abstraction has 44041 states and 170008 transitions. [2021-06-05 06:49:19,836 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 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 06:49:19,836 INFO L276 IsEmpty]: Start isEmpty. Operand 44041 states and 170008 transitions. [2021-06-05 06:49:19,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:49:19,914 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:49:19,914 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 06:49:20,115 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4603,254 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:20,115 INFO L430 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:49:20,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:49:20,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1938529707, now seen corresponding path program 174 times [2021-06-05 06:49:20,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:49:20,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134665884] [2021-06-05 06:49:20,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:49:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:20,519 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2021-06-05 06:49:20,708 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 53 [2021-06-05 06:49:20,858 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 06:49:20,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:49:20,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134665884] [2021-06-05 06:49:20,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134665884] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:20,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631412454] [2021-06-05 06:49:20,858 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 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 06:49:20,885 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-06-05 06:49:20,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:49:20,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 06:49:20,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:49:21,177 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-05 06:49:21,510 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-06-05 06:49:21,946 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-05 06:49:23,085 WARN L205 SmtUtils]: Spent 972.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 138 [2021-06-05 06:49:23,757 WARN L205 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 99 [2021-06-05 06:49:23,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:23,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:23,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:23,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:23,870 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 06:49:23,871 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:23,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:23,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:23,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:23,879 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 06:49:23,880 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:24,332 WARN L205 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 114 [2021-06-05 06:49:24,332 INFO L628 ElimStorePlain]: treesize reduction 134, result has 68.8 percent of original size [2021-06-05 06:49:24,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:24,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:24,339 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 30 treesize of output 16 [2021-06-05 06:49:24,340 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:24,458 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 06:49:24,458 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:24,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:24,464 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:24,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:24,465 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 30 treesize of output 16 [2021-06-05 06:49:24,466 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:24,581 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 06:49:24,581 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:24,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:24,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:24,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:24,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 16 [2021-06-05 06:49:24,589 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:24,688 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:24,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:24,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:24,694 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 30 treesize of output 16 [2021-06-05 06:49:24,695 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:24,785 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:24,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:24,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:24,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:24,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:24,794 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 06:49:24,796 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:24,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:24,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:24,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:49:24,803 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:24,922 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-06-05 06:49:24,923 INFO L628 ElimStorePlain]: treesize reduction 16, result has 89.9 percent of original size [2021-06-05 06:49:24,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:24,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:24,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 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 06:49:24,930 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:25,101 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-06-05 06:49:25,102 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:25,105 INFO L550 ElimStorePlain]: Start of recursive call 1: 14 dim-0 vars, 7 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:49:25,105 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 21 variables, input treesize:502, output treesize:39 [2021-06-05 06:49:25,150 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 06:49:25,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631412454] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:25,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:25,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-06-05 06:49:25,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387792734] [2021-06-05 06:49:25,150 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:49:25,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:25,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:49:25,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:49:25,151 INFO L87 Difference]: Start difference. First operand 44041 states and 170008 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 06:49:25,600 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 45 [2021-06-05 06:49:25,955 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2021-06-05 06:49:26,244 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2021-06-05 06:49:26,412 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 45 [2021-06-05 06:49:26,593 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 60 [2021-06-05 06:49:26,838 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 58 [2021-06-05 06:49:27,006 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 59 [2021-06-05 06:49:27,701 WARN L205 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 85 [2021-06-05 06:49:28,371 WARN L205 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 79 [2021-06-05 06:49:28,545 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2021-06-05 06:49:29,606 WARN L205 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 128 [2021-06-05 06:49:30,635 WARN L205 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 129 [2021-06-05 06:49:30,781 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2021-06-05 06:49:31,413 WARN L205 SmtUtils]: Spent 558.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 90 [2021-06-05 06:49:32,561 WARN L205 SmtUtils]: Spent 994.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 127 [2021-06-05 06:49:33,715 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 160 DAG size of output: 126 [2021-06-05 06:49:33,995 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 72 [2021-06-05 06:49:34,148 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 52 [2021-06-05 06:49:34,472 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 06:49:35,222 WARN L205 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 111 [2021-06-05 06:49:35,419 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 46 [2021-06-05 06:49:35,809 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2021-06-05 06:49:36,040 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 56 [2021-06-05 06:49:36,918 WARN L205 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 126 [2021-06-05 06:49:37,153 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 55 [2021-06-05 06:49:37,372 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 39 [2021-06-05 06:49:37,588 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 50 [2021-06-05 06:49:37,772 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2021-06-05 06:49:38,030 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 34 [2021-06-05 06:49:38,208 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 41 [2021-06-05 06:49:38,402 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 32 [2021-06-05 06:49:38,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:49:38,590 INFO L93 Difference]: Finished difference Result 57596 states and 215241 transitions. [2021-06-05 06:49:38,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-06-05 06:49:38,591 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 06:49:38,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:49:38,732 INFO L225 Difference]: With dead ends: 57596 [2021-06-05 06:49:38,732 INFO L226 Difference]: Without dead ends: 57461 [2021-06-05 06:49:38,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1068 ImplicationChecksByTransitivity, 14901.7ms TimeCoverageRelationStatistics Valid=682, Invalid=2858, Unknown=0, NotChecked=0, Total=3540 [2021-06-05 06:49:38,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57461 states. [2021-06-05 06:49:39,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57461 to 44285. [2021-06-05 06:49:39,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44285 states, 44284 states have (on average 3.85920422726041) internal successors, (170901), 44284 states have internal predecessors, (170901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:39,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44285 states to 44285 states and 170901 transitions. [2021-06-05 06:49:39,817 INFO L78 Accepts]: Start accepts. Automaton has 44285 states and 170901 transitions. Word has length 30 [2021-06-05 06:49:39,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:49:39,817 INFO L482 AbstractCegarLoop]: Abstraction has 44285 states and 170901 transitions. [2021-06-05 06:49:39,817 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 06:49:39,818 INFO L276 IsEmpty]: Start isEmpty. Operand 44285 states and 170901 transitions. [2021-06-05 06:49:39,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:49:39,887 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:49:39,887 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 06:49:40,088 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 255 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4627 [2021-06-05 06:49:40,088 INFO L430 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:49:40,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:49:40,089 INFO L82 PathProgramCache]: Analyzing trace with hash -806056025, now seen corresponding path program 175 times [2021-06-05 06:49:40,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:49:40,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975715204] [2021-06-05 06:49:40,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:49:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:40,600 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2021-06-05 06:49:40,788 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 06:49:40,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:49:40,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975715204] [2021-06-05 06:49:40,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975715204] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:40,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221255476] [2021-06-05 06:49:40,789 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 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 06:49:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:40,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-05 06:49:40,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:49:41,710 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2021-06-05 06:49:42,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,515 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 06:49:42,516 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,525 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,528 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,529 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 06:49:42,529 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,536 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,542 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 06:49:42,543 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,551 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,552 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,556 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 57 treesize of output 22 [2021-06-05 06:49:42,557 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,563 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,571 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 55 treesize of output 22 [2021-06-05 06:49:42,572 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,588 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 06:49:42,589 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,605 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,605 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 06:49:42,606 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,616 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,622 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 47 treesize of output 25 [2021-06-05 06:49:42,623 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,632 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,635 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,638 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,638 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 22 [2021-06-05 06:49:42,639 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,647 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,648 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,650 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,654 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 06:49:42,655 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,667 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,670 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 19 [2021-06-05 06:49:42,670 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,678 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,686 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 06:49:42,687 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,703 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 06:49:42,704 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,720 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 06:49:42,720 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,729 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,731 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,736 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, 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 06:49:42,738 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,746 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,755 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,755 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 06:49:42,756 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,776 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 06:49:42,777 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,787 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,790 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,791 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,798 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 55 treesize of output 25 [2021-06-05 06:49:42,799 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,820 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 06:49:42,821 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,833 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,841 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 06:49:42,842 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,860 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,861 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 06:49:42,861 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,872 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,874 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,881 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,881 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 55 treesize of output 25 [2021-06-05 06:49:42,883 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,902 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,902 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 35 treesize of output 19 [2021-06-05 06:49:42,903 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,923 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 06:49:42,923 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,944 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 53 treesize of output 19 [2021-06-05 06:49:42,945 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,960 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 06:49:42,960 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,972 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,976 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 06:49:42,977 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,991 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 19 [2021-06-05 06:49:42,991 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:42,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:42,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:42,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,000 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,002 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,007 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 06:49:43,007 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,015 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,023 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 06:49:43,024 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,044 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 06:49:43,045 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,061 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 42 treesize of output 22 [2021-06-05 06:49:43,062 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,071 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,076 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 06:49:43,077 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,087 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,091 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 06:49:43,092 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,099 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,105 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 57 treesize of output 25 [2021-06-05 06:49:43,106 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,112 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,115 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,118 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 06:49:43,119 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,133 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 06:49:43,134 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,140 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,147 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 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 06:49:43,148 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,155 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,156 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,161 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,161 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 55 treesize of output 25 [2021-06-05 06:49:43,162 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,168 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,175 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 06:49:43,176 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,181 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,184 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,188 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 53 treesize of output 25 [2021-06-05 06:49:43,189 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,199 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,202 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 40 treesize of output 22 [2021-06-05 06:49:43,203 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,208 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,216 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 22 [2021-06-05 06:49:43,217 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,224 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,229 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 57 treesize of output 25 [2021-06-05 06:49:43,230 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,237 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,243 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 06:49:43,244 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,257 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 55 treesize of output 22 [2021-06-05 06:49:43,258 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,270 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,271 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 57 treesize of output 25 [2021-06-05 06:49:43,272 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,285 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,285 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 06:49:43,286 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,299 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 06:49:43,300 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,313 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 22 [2021-06-05 06:49:43,313 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,320 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,321 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,326 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 06:49:43,327 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,341 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 06:49:43,342 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,355 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 06:49:43,355 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,361 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,367 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,368 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 55 treesize of output 19 [2021-06-05 06:49:43,369 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,504 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 42 treesize of output 22 [2021-06-05 06:49:43,504 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,515 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,515 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 06:49:43,516 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,527 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,527 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 06:49:43,528 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,532 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,538 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 06:49:43,539 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,545 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,549 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 42 treesize of output 22 [2021-06-05 06:49:43,550 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,560 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,560 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 51 treesize of output 22 [2021-06-05 06:49:43,561 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,570 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 22 [2021-06-05 06:49:43,571 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,580 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 47 treesize of output 25 [2021-06-05 06:49:43,581 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:43,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 06:49:43,586 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 06:49:43,587 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:43,615 INFO L628 ElimStorePlain]: treesize reduction 116, result has 15.3 percent of original size [2021-06-05 06:49:43,616 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 06:49:43,617 INFO L247 ElimStorePlain]: Needed 64 recursive calls to eliminate 2 variables, input treesize:3424, output treesize:15 [2021-06-05 06:49:43,646 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 06:49:43,646 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221255476] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:43,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:43,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-06-05 06:49:43,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116906068] [2021-06-05 06:49:43,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:49:43,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:43,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:49:43,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:49:43,647 INFO L87 Difference]: Start difference. First operand 44285 states and 170901 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 06:49:44,564 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 78 [2021-06-05 06:49:44,917 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 72 [2021-06-05 06:49:45,303 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 74 [2021-06-05 06:49:45,830 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 77 [2021-06-05 06:49:46,093 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 88 [2021-06-05 06:49:46,439 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 81 [2021-06-05 06:49:46,979 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 75 [2021-06-05 06:49:47,343 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 84 [2021-06-05 06:49:47,523 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2021-06-05 06:49:47,813 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 77 [2021-06-05 06:49:48,027 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 80 [2021-06-05 06:49:48,283 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 85 [2021-06-05 06:49:48,529 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2021-06-05 06:49:48,930 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2021-06-05 06:49:49,390 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 78 [2021-06-05 06:49:49,677 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 84 [2021-06-05 06:49:50,453 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2021-06-05 06:49:50,616 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 59 [2021-06-05 06:49:51,159 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 62 [2021-06-05 06:49:51,683 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2021-06-05 06:49:51,969 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2021-06-05 06:49:52,211 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2021-06-05 06:49:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:49:52,559 INFO L93 Difference]: Finished difference Result 63426 states and 236013 transitions. [2021-06-05 06:49:52,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-06-05 06:49:52,560 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 06:49:52,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:49:52,740 INFO L225 Difference]: With dead ends: 63426 [2021-06-05 06:49:52,740 INFO L226 Difference]: Without dead ends: 63396 [2021-06-05 06:49:52,740 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2287 ImplicationChecksByTransitivity, 8476.9ms TimeCoverageRelationStatistics Valid=936, Invalid=5870, Unknown=0, NotChecked=0, Total=6806 [2021-06-05 06:49:52,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63396 states. [2021-06-05 06:49:53,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63396 to 44329. [2021-06-05 06:49:53,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44329 states, 44328 states have (on average 3.859389099440534) internal successors, (171079), 44328 states have internal predecessors, (171079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:49:54,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44329 states to 44329 states and 171079 transitions. [2021-06-05 06:49:54,040 INFO L78 Accepts]: Start accepts. Automaton has 44329 states and 171079 transitions. Word has length 30 [2021-06-05 06:49:54,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:49:54,040 INFO L482 AbstractCegarLoop]: Abstraction has 44329 states and 171079 transitions. [2021-06-05 06:49:54,040 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 06:49:54,040 INFO L276 IsEmpty]: Start isEmpty. Operand 44329 states and 171079 transitions. [2021-06-05 06:49:54,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:49:54,108 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:49:54,108 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 06:49:54,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4656,256 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:49:54,308 INFO L430 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:49:54,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:49:54,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1782374869, now seen corresponding path program 176 times [2021-06-05 06:49:54,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:49:54,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495023332] [2021-06-05 06:49:54,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:49:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:49:54,650 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-06-05 06:49:54,884 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 06:49:54,884 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:49:54,884 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495023332] [2021-06-05 06:49:54,885 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495023332] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:54,885 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935062530] [2021-06-05 06:49:54,885 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 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 06:49:54,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 06:49:54,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:49:54,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-05 06:49:54,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:49:55,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,495 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-05 06:49:55,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 33 [2021-06-05 06:49:55,497 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:55,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,521 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:55,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:55,522 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:55,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,559 INFO L354 Elim1Store]: treesize reduction 12, result has 55.6 percent of original size [2021-06-05 06:49:55,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 39 [2021-06-05 06:49:55,563 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:55,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,591 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:55,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-05 06:49:55,592 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:55,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,617 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:55,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:55,619 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:55,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,658 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-05 06:49:55,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 34 [2021-06-05 06:49:55,663 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:55,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,689 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:55,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:49:55,691 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:55,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,722 INFO L354 Elim1Store]: treesize reduction 23, result has 14.8 percent of original size [2021-06-05 06:49:55,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 29 [2021-06-05 06:49:55,723 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:55,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,748 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:55,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:55,749 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:55,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,786 INFO L354 Elim1Store]: treesize reduction 20, result has 25.9 percent of original size [2021-06-05 06:49:55,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 31 [2021-06-05 06:49:55,787 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:55,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,815 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:55,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 1 [2021-06-05 06:49:55,815 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:55,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,854 INFO L354 Elim1Store]: treesize reduction 14, result has 48.1 percent of original size [2021-06-05 06:49:55,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 31 [2021-06-05 06:49:55,858 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:55,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,886 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:55,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:49:55,887 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:55,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,916 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:55,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-05 06:49:55,917 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:55,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,947 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:55,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-05 06:49:55,948 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:55,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,977 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:55,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 1 [2021-06-05 06:49:55,978 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:55,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:55,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,008 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-05 06:49:56,009 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,038 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 1 [2021-06-05 06:49:56,039 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,068 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-05 06:49:56,069 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,098 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 1 [2021-06-05 06:49:56,099 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,124 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:49:56,125 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,151 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:56,152 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,180 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 06:49:56,181 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,213 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-05 06:49:56,214 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,242 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:49:56,243 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,274 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:56,275 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,316 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 06:49:56,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 42 [2021-06-05 06:49:56,323 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,363 INFO L354 Elim1Store]: treesize reduction 18, result has 33.3 percent of original size [2021-06-05 06:49:56,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 30 [2021-06-05 06:49:56,365 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,394 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:56,395 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,426 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2021-06-05 06:49:56,427 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,453 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 1 [2021-06-05 06:49:56,454 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,476 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:49:56,477 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,503 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 1 [2021-06-05 06:49:56,503 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,536 INFO L354 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2021-06-05 06:49:56,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 28 [2021-06-05 06:49:56,538 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,561 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:49:56,562 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,588 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 22 [2021-06-05 06:49:56,590 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,614 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 1 [2021-06-05 06:49:56,615 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,642 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-05 06:49:56,643 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,669 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 25 [2021-06-05 06:49:56,670 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,694 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:56,695 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,720 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:49:56,721 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,748 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 1 [2021-06-05 06:49:56,748 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,775 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:49:56,776 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,802 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 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, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:56,803 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,832 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-05 06:49:56,833 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,861 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-05 06:49:56,862 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,892 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 1 [2021-06-05 06:49:56,893 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,920 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 22 [2021-06-05 06:49:56,922 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,949 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 1 [2021-06-05 06:49:56,949 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,975 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:56,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 1 [2021-06-05 06:49:56,976 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:56,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:56,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,001 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:57,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:49:57,003 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:57,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,028 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:57,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:49:57,029 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:57,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,055 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:57,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 25 [2021-06-05 06:49:57,056 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:57,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,084 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:57,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-05 06:49:57,085 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:57,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,112 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:57,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-05 06:49:57,113 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:57,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,139 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:57,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 22 [2021-06-05 06:49:57,140 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:57,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,168 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:57,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-05 06:49:57,169 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:57,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,358 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:57,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 1 [2021-06-05 06:49:57,359 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:57,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,380 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:57,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 25 [2021-06-05 06:49:57,381 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:57,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,403 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:57,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 1 [2021-06-05 06:49:57,404 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:57,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,424 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:57,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 25 [2021-06-05 06:49:57,425 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:57,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,445 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:57,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 1 [2021-06-05 06:49:57,446 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:57,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,465 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:57,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 1 [2021-06-05 06:49:57,466 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:57,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:49:57,477 INFO L354 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2021-06-05 06:49:57,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 1 [2021-06-05 06:49:57,477 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-05 06:49:57,556 INFO L628 ElimStorePlain]: treesize reduction 126, result has 38.2 percent of original size [2021-06-05 06:49:57,557 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2021-06-05 06:49:57,557 INFO L247 ElimStorePlain]: Needed 65 recursive calls to eliminate 1 variables, input treesize:3409, output treesize:78 [2021-06-05 06:49:57,652 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 06:49:57,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935062530] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:49:57,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 06:49:57,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-06-05 06:49:57,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908410472] [2021-06-05 06:49:57,653 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-06-05 06:49:57,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 06:49:57,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-06-05 06:49:57,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2021-06-05 06:49:57,653 INFO L87 Difference]: Start difference. First operand 44329 states and 171079 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 06:49:58,902 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2021-06-05 06:49:59,374 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 75 [2021-06-05 06:49:59,905 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 78 [2021-06-05 06:50:00,574 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2021-06-05 06:50:00,804 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2021-06-05 06:50:01,109 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2021-06-05 06:50:01,405 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2021-06-05 06:50:01,610 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2021-06-05 06:50:01,957 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-06-05 06:50:02,260 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2021-06-05 06:50:02,574 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 79 [2021-06-05 06:50:03,269 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2021-06-05 06:50:03,667 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2021-06-05 06:50:04,013 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2021-06-05 06:50:04,266 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2021-06-05 06:50:04,588 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-06-05 06:50:04,785 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 86 [2021-06-05 06:50:05,054 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 95 [2021-06-05 06:50:05,303 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2021-06-05 06:50:05,530 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 87 [2021-06-05 06:50:06,091 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2021-06-05 06:50:06,359 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2021-06-05 06:50:06,802 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 99 [2021-06-05 06:50:07,130 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2021-06-05 06:50:07,344 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2021-06-05 06:50:07,700 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 90 [2021-06-05 06:50:08,001 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 97 [2021-06-05 06:50:08,157 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2021-06-05 06:50:08,330 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2021-06-05 06:50:08,564 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2021-06-05 06:50:08,921 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2021-06-05 06:50:09,311 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 91 [2021-06-05 06:50:09,611 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2021-06-05 06:50:10,064 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 101 [2021-06-05 06:50:10,565 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 107 [2021-06-05 06:50:10,749 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-06-05 06:50:11,006 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 80 [2021-06-05 06:50:11,220 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-06-05 06:50:11,571 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 100 [2021-06-05 06:50:12,057 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2021-06-05 06:50:12,299 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2021-06-05 06:50:12,671 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2021-06-05 06:50:12,936 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 83 [2021-06-05 06:50:13,133 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 06:50:13,492 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 102 [2021-06-05 06:50:14,138 WARN L205 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 113 [2021-06-05 06:50:14,463 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2021-06-05 06:50:14,927 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 123 [2021-06-05 06:50:15,088 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2021-06-05 06:50:15,642 WARN L205 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 106 [2021-06-05 06:50:16,029 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 92 [2021-06-05 06:50:16,264 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 92 [2021-06-05 06:50:16,778 WARN L205 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 136 [2021-06-05 06:50:16,962 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2021-06-05 06:50:17,401 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 136 [2021-06-05 06:50:17,797 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2021-06-05 06:50:18,110 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 106 [2021-06-05 06:50:18,555 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 125 [2021-06-05 06:50:19,377 WARN L205 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 138 [2021-06-05 06:50:19,838 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 108 [2021-06-05 06:50:20,371 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2021-06-05 06:50:20,719 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 110 [2021-06-05 06:50:20,965 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 40 [2021-06-05 06:50:21,286 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 06:50:21,489 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 44 [2021-06-05 06:50:22,056 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 91 [2021-06-05 06:50:22,345 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2021-06-05 06:50:22,755 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 50 [2021-06-05 06:50:22,966 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 46 [2021-06-05 06:50:23,218 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 46 [2021-06-05 06:50:23,449 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 43 [2021-06-05 06:50:23,673 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 42 [2021-06-05 06:50:23,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 06:50:23,994 INFO L93 Difference]: Finished difference Result 77166 states and 282626 transitions. [2021-06-05 06:50:23,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2021-06-05 06:50:23,994 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 06:50:23,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 06:50:24,185 INFO L225 Difference]: With dead ends: 77166 [2021-06-05 06:50:24,185 INFO L226 Difference]: Without dead ends: 77094 [2021-06-05 06:50:24,186 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7346 ImplicationChecksByTransitivity, 23888.4ms TimeCoverageRelationStatistics Valid=1751, Invalid=17989, Unknown=0, NotChecked=0, Total=19740 [2021-06-05 06:50:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77094 states. [2021-06-05 06:50:25,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77094 to 44685. [2021-06-05 06:50:25,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44685 states, 44684 states have (on average 3.860375078327813) internal successors, (172497), 44684 states have internal predecessors, (172497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 06:50:25,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44685 states to 44685 states and 172497 transitions. [2021-06-05 06:50:25,614 INFO L78 Accepts]: Start accepts. Automaton has 44685 states and 172497 transitions. Word has length 30 [2021-06-05 06:50:25,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 06:50:25,615 INFO L482 AbstractCegarLoop]: Abstraction has 44685 states and 172497 transitions. [2021-06-05 06:50:25,615 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 06:50:25,615 INFO L276 IsEmpty]: Start isEmpty. Operand 44685 states and 172497 transitions. [2021-06-05 06:50:25,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-06-05 06:50:25,689 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 06:50:25,689 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 06:50:25,890 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 257 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5012 [2021-06-05 06:50:25,891 INFO L430 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 06:50:25,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 06:50:25,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1460513255, now seen corresponding path program 177 times [2021-06-05 06:50:25,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 06:50:25,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950437703] [2021-06-05 06:50:25,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 06:50:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 06:50:26,524 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 06:50:26,524 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 06:50:26,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950437703] [2021-06-05 06:50:26,524 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950437703] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 06:50:26,524 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196411863] [2021-06-05 06:50:26,524 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 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 06:50:26,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-05 06:50:26,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 06:50:26,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 35 conjunts are in the unsatisfiable core [2021-06-05 06:50:26,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 06:50:33,005 WARN L205 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 93 [2021-06-05 06:50:33,390 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2021-06-05 06:50:33,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:33,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:33,765 INFO L354 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2021-06-05 06:50:33,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 39 [2021-06-05 06:50:33,767 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:33,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:33,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:33,899 INFO L354 Elim1Store]: treesize reduction 24, result has 46.7 percent of original size [2021-06-05 06:50:33,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 45 [2021-06-05 06:50:33,902 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:39,377 WARN L205 SmtUtils]: Spent 5.47 s on a formula simplification. DAG size of input: 706 DAG size of output: 656 [2021-06-05 06:50:39,378 INFO L628 ElimStorePlain]: treesize reduction 979, result has 72.0 percent of original size [2021-06-05 06:50:39,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:39,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:39,502 INFO L354 Elim1Store]: treesize reduction 30, result has 33.3 percent of original size [2021-06-05 06:50:39,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 36 [2021-06-05 06:50:39,503 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 06:50:39,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:39,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-05 06:50:39,627 INFO L354 Elim1Store]: treesize reduction 12, result has 73.3 percent of original size [2021-06-05 06:50:39,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 44 treesize of output 54 [2021-06-05 06:50:39,633 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. Received shutdown request... [2021-06-05 06:50:42,985 WARN L222 SmtUtils]: Removed 25 from assertion stack [2021-06-05 06:50:43,185 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5080,258 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 06:50:43,186 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 06:50:43,187 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 06:50:43,188 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 06:50:43,189 INFO L202 PluginConnector]: Adding new model max-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 06:50:43 BasicIcfg [2021-06-05 06:50:43,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 06:50:43,189 INFO L168 Benchmark]: Toolchain (without parser) took 762489.59 ms. Allocated memory was 375.4 MB in the beginning and 15.9 GB in the end (delta: 15.5 GB). Free memory was 354.1 MB in the beginning and 12.7 GB in the end (delta: -12.3 GB). Peak memory consumption was 4.2 GB. Max. memory is 16.0 GB. [2021-06-05 06:50:43,189 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 375.4 MB. Free memory is still 355.3 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 06:50:43,189 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.17 ms. Allocated memory is still 375.4 MB. Free memory was 354.0 MB in the beginning and 352.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 06:50:43,189 INFO L168 Benchmark]: Boogie Preprocessor took 23.41 ms. Allocated memory is still 375.4 MB. Free memory was 352.6 MB in the beginning and 351.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 06:50:43,189 INFO L168 Benchmark]: RCFGBuilder took 256.70 ms. Allocated memory is still 375.4 MB. Free memory was 351.6 MB in the beginning and 338.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. [2021-06-05 06:50:43,189 INFO L168 Benchmark]: TraceAbstraction took 762168.79 ms. Allocated memory was 375.4 MB in the beginning and 15.9 GB in the end (delta: 15.5 GB). Free memory was 338.2 MB in the beginning and 12.7 GB in the end (delta: -12.4 GB). Peak memory consumption was 4.2 GB. Max. memory is 16.0 GB. [2021-06-05 06:50:43,189 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 0.15 ms. Allocated memory is still 375.4 MB. Free memory is still 355.3 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 29.17 ms. Allocated memory is still 375.4 MB. Free memory was 354.0 MB in the beginning and 352.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 23.41 ms. Allocated memory is still 375.4 MB. Free memory was 352.6 MB in the beginning and 351.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 256.70 ms. Allocated memory is still 375.4 MB. Free memory was 351.6 MB in the beginning and 338.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 762168.79 ms. Allocated memory was 375.4 MB in the beginning and 15.9 GB in the end (delta: 15.5 GB). Free memory was 338.2 MB in the beginning and 12.7 GB in the end (delta: -12.4 GB). Peak memory consumption was 4.2 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 analyzing trace of length 31 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while SimplifyDDAWithTimeout was simplifying term of DAG size 653 for 3350ms.. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 31 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while SimplifyDDAWithTimeout was simplifying term of DAG size 653 for 3350ms.. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 31 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while SimplifyDDAWithTimeout was simplifying term of DAG size 653 for 3350ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 31 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while SimplifyDDAWithTimeout was simplifying term of DAG size 653 for 3350ms.. - 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: 762064.1ms, OverallIterations: 260, TraceHistogramMax: 3, EmptinessCheckTime: 6055.3ms, AutomataDifference: 411071.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 25.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11965 SDtfs, 75677 SDslu, 93135 SDs, 0 SdLazy, 150895 SolverSat, 13745 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78870.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17058 GetRequests, 5447 SyntacticMatches, 250 SemanticMatches, 11361 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202224 ImplicationChecksByTransitivity, 349572.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48550occurred in iteration=248, InterpolantAutomatonStates: 10128, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 89942.5ms AutomataMinimizationTime, 259 MinimizatonAttempts, 1385975 StatesRemovedByMinimization, 259 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 714.7ms SsaConstructionTime, 2567.0ms SatisfiabilityAnalysisTime, 177130.3ms InterpolantComputationTime, 13778 NumberOfCodeBlocks, 13778 NumberOfCodeBlocksAsserted, 894 NumberOfCheckSat, 13263 ConstructedInterpolants, 193 QuantifiedInterpolants, 218487 SizeOfPredicates, 1049 NumberOfNonLiveVariables, 17406 ConjunctsInSsa, 3745 ConjunctsInUnsatCore, 515 InterpolantComputations, 3 PerfectInterpolantSequences, 1001/4406 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