/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-proofs/counter-fun-mnX.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a865e3bea3ade1065a4c95009cfa501fe03c5538-a865e3b [2021-02-19 19:50:28,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 19:50:28,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 19:50:28,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-19 19:50:28,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 19:50:28,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 19:50:28,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 19:50:28,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 19:50:28,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 19:50:28,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 19:50:28,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 19:50:28,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 19:50:28,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 19:50:28,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 19:50:28,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 19:50:28,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 19:50:28,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 19:50:28,328 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 [2021-02-19 19:50:28,358 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 19:50:28,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 19:50:28,359 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-02-19 19:50:28,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-02-19 19:50:28,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 19:50:28,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 19:50:28,361 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 19:50:28,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 19:50:28,362 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 19:50:28,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 19:50:28,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 19:50:28,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 19:50:28,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 19:50:28,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 19:50:28,362 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 19:50:28,363 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 19:50:28,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 19:50:28,363 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 19:50:28,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 19:50:28,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 19:50:28,363 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 19:50:28,363 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-19 19:50:28,363 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 19:50:28,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 19:50:28,363 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 19:50:28,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 19:50:28,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 19:50:28,364 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 19:50:28,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 19:50:28,364 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-02-19 19:50:28,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 19:50:28,364 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 19:50:28,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 19:50:28,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 19:50:28,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 19:50:28,633 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-02-19 19:50:28,634 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-02-19 19:50:28,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-proofs/counter-fun-mnX.wvr.bpl [2021-02-19 19:50:28,634 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-proofs/counter-fun-mnX.wvr.bpl' [2021-02-19 19:50:28,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 19:50:28,677 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 19:50:28,679 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-02-19 19:50:28,679 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-02-19 19:50:28,679 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-02-19 19:50:28,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "counter-fun-mnX.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:50:28" (1/1) ... [2021-02-19 19:50:28,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "counter-fun-mnX.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:50:28" (1/1) ... [2021-02-19 19:50:28,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-02-19 19:50:28,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 19:50:28,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 19:50:28,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 19:50:28,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "counter-fun-mnX.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:50:28" (1/1) ... [2021-02-19 19:50:28,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "counter-fun-mnX.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:50:28" (1/1) ... [2021-02-19 19:50:28,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "counter-fun-mnX.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:50:28" (1/1) ... [2021-02-19 19:50:28,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "counter-fun-mnX.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:50:28" (1/1) ... [2021-02-19 19:50:28,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "counter-fun-mnX.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:50:28" (1/1) ... [2021-02-19 19:50:28,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "counter-fun-mnX.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:50:28" (1/1) ... [2021-02-19 19:50:28,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "counter-fun-mnX.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:50:28" (1/1) ... [2021-02-19 19:50:28,715 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 19:50:28,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 19:50:28,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 19:50:28,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 19:50:28,717 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "counter-fun-mnX.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:50:28" (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 [2021-02-19 19:50:28,772 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-02-19 19:50:28,772 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-02-19 19:50:28,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-02-19 19:50:28,773 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-02-19 19:50:28,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-02-19 19:50:28,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-02-19 19:50:28,773 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-02-19 19:50:28,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 19:50:28,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 19:50:28,774 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-02-19 19:50:28,902 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 19:50:28,902 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-19 19:50:28,903 INFO L202 PluginConnector]: Adding new model counter-fun-mnX.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 07:50:28 BoogieIcfgContainer [2021-02-19 19:50:28,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 19:50:28,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 19:50:28,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 19:50:28,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 19:50:28,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "counter-fun-mnX.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 19.02 07:50:28" (1/2) ... [2021-02-19 19:50:28,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe318c1 and model type counter-fun-mnX.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 07:50:28, skipping insertion in model container [2021-02-19 19:50:28,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "counter-fun-mnX.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 07:50:28" (2/2) ... [2021-02-19 19:50:28,908 INFO L111 eAbstractionObserver]: Analyzing ICFG counter-fun-mnX.wvr.bpl [2021-02-19 19:50:28,912 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-02-19 19:50:28,912 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 19:50:28,914 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 19:50:28,914 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-02-19 19:50:28,940 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-02-19 19:50:28,951 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-02-19 19:50:28,962 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 19:50:28,962 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 19:50:28,962 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 19:50:28,962 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 19:50:28,963 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 19:50:28,963 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 19:50:28,963 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 19:50:28,963 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 19:50:28,975 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 22 transitions, 60 flow [2021-02-19 19:50:28,983 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 34 states, 32 states have (on average 1.8125) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:28,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.8125) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:29,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-19 19:50:29,008 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:29,008 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:29,008 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:29,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:29,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1774120109, now seen corresponding path program 1 times [2021-02-19 19:50:29,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:29,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505674067] [2021-02-19 19:50:29,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:29,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:29,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505674067] [2021-02-19 19:50:29,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 19:50:29,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 19:50:29,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959776239] [2021-02-19 19:50:29,161 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 19:50:29,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:29,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 19:50:29,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 19:50:29,173 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.8125) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:29,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:29,200 INFO L93 Difference]: Finished difference Result 57 states and 105 transitions. [2021-02-19 19:50:29,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 19:50:29,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-02-19 19:50:29,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:29,208 INFO L225 Difference]: With dead ends: 57 [2021-02-19 19:50:29,208 INFO L226 Difference]: Without dead ends: 50 [2021-02-19 19:50:29,209 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 19:50:29,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-02-19 19:50:29,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-02-19 19:50:29,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.85) internal successors, (74), 40 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:29,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 74 transitions. [2021-02-19 19:50:29,236 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 74 transitions. Word has length 14 [2021-02-19 19:50:29,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:29,239 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 74 transitions. [2021-02-19 19:50:29,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:29,240 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 74 transitions. [2021-02-19 19:50:29,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-19 19:50:29,240 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:29,240 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:29,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 19:50:29,241 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:29,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:29,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1798270993, now seen corresponding path program 1 times [2021-02-19 19:50:29,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:29,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050486816] [2021-02-19 19:50:29,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:29,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:29,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050486816] [2021-02-19 19:50:29,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831340051] [2021-02-19 19:50:29,353 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 [2021-02-19 19:50:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:29,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2021-02-19 19:50:29,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:29,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:29,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2021-02-19 19:50:29,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745196894] [2021-02-19 19:50:29,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-19 19:50:29,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:29,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-19 19:50:29,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-02-19 19:50:29,485 INFO L87 Difference]: Start difference. First operand 41 states and 74 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:29,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:29,600 INFO L93 Difference]: Finished difference Result 68 states and 120 transitions. [2021-02-19 19:50:29,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 19:50:29,600 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-02-19 19:50:29,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:29,603 INFO L225 Difference]: With dead ends: 68 [2021-02-19 19:50:29,603 INFO L226 Difference]: Without dead ends: 68 [2021-02-19 19:50:29,604 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-02-19 19:50:29,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-02-19 19:50:29,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 41. [2021-02-19 19:50:29,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.9) internal successors, (76), 40 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:29,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 76 transitions. [2021-02-19 19:50:29,613 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 76 transitions. Word has length 16 [2021-02-19 19:50:29,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:29,614 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 76 transitions. [2021-02-19 19:50:29,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:29,614 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 76 transitions. [2021-02-19 19:50:29,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-19 19:50:29,615 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:29,615 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:29,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-02-19 19:50:29,835 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:29,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:29,836 INFO L82 PathProgramCache]: Analyzing trace with hash -1095465685, now seen corresponding path program 1 times [2021-02-19 19:50:29,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:29,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232052921] [2021-02-19 19:50:29,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:29,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:29,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232052921] [2021-02-19 19:50:29,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 19:50:29,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 19:50:29,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170507807] [2021-02-19 19:50:29,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 19:50:29,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:29,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 19:50:29,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-19 19:50:29,868 INFO L87 Difference]: Start difference. First operand 41 states and 76 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:29,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:29,912 INFO L93 Difference]: Finished difference Result 71 states and 125 transitions. [2021-02-19 19:50:29,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 19:50:29,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-02-19 19:50:29,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:29,913 INFO L225 Difference]: With dead ends: 71 [2021-02-19 19:50:29,913 INFO L226 Difference]: Without dead ends: 66 [2021-02-19 19:50:29,914 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-02-19 19:50:29,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-02-19 19:50:29,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 49. [2021-02-19 19:50:29,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:29,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 91 transitions. [2021-02-19 19:50:29,917 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 91 transitions. Word has length 16 [2021-02-19 19:50:29,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:29,918 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 91 transitions. [2021-02-19 19:50:29,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:29,918 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 91 transitions. [2021-02-19 19:50:29,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-19 19:50:29,918 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:29,918 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:29,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 19:50:29,918 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:29,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:29,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1934573751, now seen corresponding path program 2 times [2021-02-19 19:50:29,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:29,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627885219] [2021-02-19 19:50:29,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:29,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:29,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627885219] [2021-02-19 19:50:29,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 19:50:29,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 19:50:29,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453304724] [2021-02-19 19:50:29,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 19:50:29,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:29,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 19:50:29,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-19 19:50:29,948 INFO L87 Difference]: Start difference. First operand 49 states and 91 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:29,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:29,983 INFO L93 Difference]: Finished difference Result 51 states and 94 transitions. [2021-02-19 19:50:29,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 19:50:29,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-02-19 19:50:29,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:29,984 INFO L225 Difference]: With dead ends: 51 [2021-02-19 19:50:29,984 INFO L226 Difference]: Without dead ends: 51 [2021-02-19 19:50:29,984 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-02-19 19:50:29,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-19 19:50:29,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2021-02-19 19:50:29,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.880952380952381) internal successors, (79), 42 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:29,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 79 transitions. [2021-02-19 19:50:29,987 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 79 transitions. Word has length 16 [2021-02-19 19:50:29,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:29,987 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 79 transitions. [2021-02-19 19:50:29,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:29,987 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 79 transitions. [2021-02-19 19:50:29,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-19 19:50:29,988 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:29,988 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:29,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-19 19:50:29,988 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:29,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:29,988 INFO L82 PathProgramCache]: Analyzing trace with hash 550675669, now seen corresponding path program 2 times [2021-02-19 19:50:29,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:29,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219556573] [2021-02-19 19:50:29,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:30,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219556573] [2021-02-19 19:50:30,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 19:50:30,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 19:50:30,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038132514] [2021-02-19 19:50:30,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 19:50:30,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:30,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 19:50:30,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-19 19:50:30,015 INFO L87 Difference]: Start difference. First operand 43 states and 79 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:30,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:30,075 INFO L93 Difference]: Finished difference Result 51 states and 92 transitions. [2021-02-19 19:50:30,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 19:50:30,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-02-19 19:50:30,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:30,077 INFO L225 Difference]: With dead ends: 51 [2021-02-19 19:50:30,077 INFO L226 Difference]: Without dead ends: 49 [2021-02-19 19:50:30,077 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-02-19 19:50:30,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-02-19 19:50:30,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2021-02-19 19:50:30,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.8571428571428572) internal successors, (78), 42 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:30,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 78 transitions. [2021-02-19 19:50:30,080 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 78 transitions. Word has length 16 [2021-02-19 19:50:30,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:30,080 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 78 transitions. [2021-02-19 19:50:30,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:30,080 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 78 transitions. [2021-02-19 19:50:30,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-02-19 19:50:30,081 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:30,081 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:30,081 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-19 19:50:30,081 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:30,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:30,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1810522093, now seen corresponding path program 1 times [2021-02-19 19:50:30,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:30,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882761125] [2021-02-19 19:50:30,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:30,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882761125] [2021-02-19 19:50:30,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724681201] [2021-02-19 19:50:30,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-02-19 19:50:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:30,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 9 conjunts are in the unsatisfiable core [2021-02-19 19:50:30,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:30,199 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 13 treesize of output 9 [2021-02-19 19:50:30,202 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:50:30,204 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:50:30,204 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:50:30,204 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:5 [2021-02-19 19:50:30,240 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 11 treesize of output 7 [2021-02-19 19:50:30,242 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:50:30,243 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:50:30,243 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:50:30,243 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-02-19 19:50:30,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:30,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:30,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-02-19 19:50:30,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564423231] [2021-02-19 19:50:30,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 19:50:30,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:30,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 19:50:30,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 19:50:30,252 INFO L87 Difference]: Start difference. First operand 43 states and 78 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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) [2021-02-19 19:50:30,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:30,265 INFO L93 Difference]: Finished difference Result 99 states and 186 transitions. [2021-02-19 19:50:30,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-19 19:50:30,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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 [2021-02-19 19:50:30,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:30,267 INFO L225 Difference]: With dead ends: 99 [2021-02-19 19:50:30,268 INFO L226 Difference]: Without dead ends: 92 [2021-02-19 19:50:30,268 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 19:50:30,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-02-19 19:50:30,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 69. [2021-02-19 19:50:30,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 2.0441176470588234) internal successors, (139), 68 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:30,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 139 transitions. [2021-02-19 19:50:30,278 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 139 transitions. Word has length 18 [2021-02-19 19:50:30,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:30,278 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 139 transitions. [2021-02-19 19:50:30,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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) [2021-02-19 19:50:30,279 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 139 transitions. [2021-02-19 19:50:30,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-02-19 19:50:30,279 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:30,279 INFO L506 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:30,494 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:30,494 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:30,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:30,494 INFO L82 PathProgramCache]: Analyzing trace with hash 629700333, now seen corresponding path program 2 times [2021-02-19 19:50:30,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:30,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758823552] [2021-02-19 19:50:30,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:30,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:50:30,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758823552] [2021-02-19 19:50:30,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 19:50:30,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 19:50:30,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170326763] [2021-02-19 19:50:30,513 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 19:50:30,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:30,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 19:50:30,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 19:50:30,513 INFO L87 Difference]: Start difference. First operand 69 states and 139 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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) [2021-02-19 19:50:30,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:30,523 INFO L93 Difference]: Finished difference Result 118 states and 233 transitions. [2021-02-19 19:50:30,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-19 19:50:30,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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 [2021-02-19 19:50:30,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:30,524 INFO L225 Difference]: With dead ends: 118 [2021-02-19 19:50:30,524 INFO L226 Difference]: Without dead ends: 111 [2021-02-19 19:50:30,524 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 19:50:30,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-02-19 19:50:30,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 86. [2021-02-19 19:50:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.1294117647058823) internal successors, (181), 85 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:30,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 181 transitions. [2021-02-19 19:50:30,528 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 181 transitions. Word has length 18 [2021-02-19 19:50:30,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:30,529 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 181 transitions. [2021-02-19 19:50:30,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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) [2021-02-19 19:50:30,529 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 181 transitions. [2021-02-19 19:50:30,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-19 19:50:30,529 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:30,529 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:30,529 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-19 19:50:30,530 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:30,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:30,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1558932945, now seen corresponding path program 3 times [2021-02-19 19:50:30,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:30,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949181796] [2021-02-19 19:50:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:30,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:30,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949181796] [2021-02-19 19:50:30,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650953970] [2021-02-19 19:50:30,586 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 [2021-02-19 19:50:30,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-02-19 19:50:30,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:30,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-02-19 19:50:30,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:30,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:30,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2021-02-19 19:50:30,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541312686] [2021-02-19 19:50:30,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-19 19:50:30,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:30,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-19 19:50:30,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-02-19 19:50:30,743 INFO L87 Difference]: Start difference. First operand 86 states and 181 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 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) [2021-02-19 19:50:31,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:31,006 INFO L93 Difference]: Finished difference Result 213 states and 407 transitions. [2021-02-19 19:50:31,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-19 19:50:31,006 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 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 20 [2021-02-19 19:50:31,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:31,009 INFO L225 Difference]: With dead ends: 213 [2021-02-19 19:50:31,009 INFO L226 Difference]: Without dead ends: 213 [2021-02-19 19:50:31,009 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2021-02-19 19:50:31,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-02-19 19:50:31,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 88. [2021-02-19 19:50:31,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.1494252873563218) internal successors, (187), 87 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:31,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 187 transitions. [2021-02-19 19:50:31,026 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 187 transitions. Word has length 20 [2021-02-19 19:50:31,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:31,026 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 187 transitions. [2021-02-19 19:50:31,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 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) [2021-02-19 19:50:31,026 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 187 transitions. [2021-02-19 19:50:31,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-19 19:50:31,027 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:31,027 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:31,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:31,242 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:31,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:31,242 INFO L82 PathProgramCache]: Analyzing trace with hash -472897429, now seen corresponding path program 4 times [2021-02-19 19:50:31,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:31,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243345805] [2021-02-19 19:50:31,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:31,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:31,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243345805] [2021-02-19 19:50:31,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668801850] [2021-02-19 19:50:31,287 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) [2021-02-19 19:50:31,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:50:31,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:31,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-02-19 19:50:31,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:31,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:31,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:31,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-02-19 19:50:31,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751713452] [2021-02-19 19:50:31,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-19 19:50:31,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:31,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-19 19:50:31,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-02-19 19:50:31,401 INFO L87 Difference]: Start difference. First operand 88 states and 187 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 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) [2021-02-19 19:50:31,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:31,743 INFO L93 Difference]: Finished difference Result 257 states and 488 transitions. [2021-02-19 19:50:31,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-19 19:50:31,747 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 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 20 [2021-02-19 19:50:31,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:31,748 INFO L225 Difference]: With dead ends: 257 [2021-02-19 19:50:31,748 INFO L226 Difference]: Without dead ends: 234 [2021-02-19 19:50:31,748 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2021-02-19 19:50:31,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-02-19 19:50:31,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 108. [2021-02-19 19:50:31,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.149532710280374) internal successors, (230), 107 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 230 transitions. [2021-02-19 19:50:31,752 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 230 transitions. Word has length 20 [2021-02-19 19:50:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:31,752 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 230 transitions. [2021-02-19 19:50:31,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 12 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) [2021-02-19 19:50:31,752 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 230 transitions. [2021-02-19 19:50:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-19 19:50:31,753 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:31,753 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:31,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:31,954 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:31,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:31,954 INFO L82 PathProgramCache]: Analyzing trace with hash -905400773, now seen corresponding path program 5 times [2021-02-19 19:50:31,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:31,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783243620] [2021-02-19 19:50:31,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:32,006 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:32,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783243620] [2021-02-19 19:50:32,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249370908] [2021-02-19 19:50:32,006 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 [2021-02-19 19:50:32,034 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-02-19 19:50:32,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:32,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-02-19 19:50:32,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:32,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:32,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:32,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-02-19 19:50:32,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911376726] [2021-02-19 19:50:32,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-19 19:50:32,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:32,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-19 19:50:32,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-02-19 19:50:32,134 INFO L87 Difference]: Start difference. First operand 108 states and 230 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:32,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:32,376 INFO L93 Difference]: Finished difference Result 236 states and 462 transitions. [2021-02-19 19:50:32,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-19 19:50:32,378 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have 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 [2021-02-19 19:50:32,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:32,379 INFO L225 Difference]: With dead ends: 236 [2021-02-19 19:50:32,379 INFO L226 Difference]: Without dead ends: 236 [2021-02-19 19:50:32,380 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:50:32,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-02-19 19:50:32,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 131. [2021-02-19 19:50:32,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 2.230769230769231) internal successors, (290), 130 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:32,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 290 transitions. [2021-02-19 19:50:32,394 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 290 transitions. Word has length 20 [2021-02-19 19:50:32,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:32,394 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 290 transitions. [2021-02-19 19:50:32,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:32,394 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 290 transitions. [2021-02-19 19:50:32,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-19 19:50:32,396 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:32,396 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:32,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-02-19 19:50:32,602 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:32,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:32,602 INFO L82 PathProgramCache]: Analyzing trace with hash 2005668441, now seen corresponding path program 6 times [2021-02-19 19:50:32,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:32,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705046928] [2021-02-19 19:50:32,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:32,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:32,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705046928] [2021-02-19 19:50:32,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584479066] [2021-02-19 19:50:32,635 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 [2021-02-19 19:50:32,659 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-02-19 19:50:32,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:32,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-02-19 19:50:32,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:32,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:32,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:32,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-02-19 19:50:32,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570562292] [2021-02-19 19:50:32,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-19 19:50:32,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:32,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-19 19:50:32,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-02-19 19:50:32,744 INFO L87 Difference]: Start difference. First operand 131 states and 290 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:32,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:32,962 INFO L93 Difference]: Finished difference Result 208 states and 429 transitions. [2021-02-19 19:50:32,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-19 19:50:32,963 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have 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 [2021-02-19 19:50:32,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:32,964 INFO L225 Difference]: With dead ends: 208 [2021-02-19 19:50:32,964 INFO L226 Difference]: Without dead ends: 204 [2021-02-19 19:50:32,964 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2021-02-19 19:50:32,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-02-19 19:50:32,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 133. [2021-02-19 19:50:32,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 2.212121212121212) internal successors, (292), 132 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:32,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 292 transitions. [2021-02-19 19:50:32,968 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 292 transitions. Word has length 20 [2021-02-19 19:50:32,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:32,968 INFO L480 AbstractCegarLoop]: Abstraction has 133 states and 292 transitions. [2021-02-19 19:50:32,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:32,968 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 292 transitions. [2021-02-19 19:50:32,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-19 19:50:32,969 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:32,969 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:33,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:33,186 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:33,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:33,186 INFO L82 PathProgramCache]: Analyzing trace with hash -2074047953, now seen corresponding path program 7 times [2021-02-19 19:50:33,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:33,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364230287] [2021-02-19 19:50:33,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:33,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:33,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:50:33,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364230287] [2021-02-19 19:50:33,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484342734] [2021-02-19 19:50:33,230 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 [2021-02-19 19:50:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:33,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-02-19 19:50:33,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:33,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:33,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-02-19 19:50:33,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170937184] [2021-02-19 19:50:33,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-19 19:50:33,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:33,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-19 19:50:33,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-02-19 19:50:33,351 INFO L87 Difference]: Start difference. First operand 133 states and 292 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) 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) [2021-02-19 19:50:33,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:33,618 INFO L93 Difference]: Finished difference Result 311 states and 632 transitions. [2021-02-19 19:50:33,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-19 19:50:33,618 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) 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 20 [2021-02-19 19:50:33,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:33,623 INFO L225 Difference]: With dead ends: 311 [2021-02-19 19:50:33,623 INFO L226 Difference]: Without dead ends: 311 [2021-02-19 19:50:33,623 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702 [2021-02-19 19:50:33,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2021-02-19 19:50:33,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 176. [2021-02-19 19:50:33,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.297142857142857) internal successors, (402), 175 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:33,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 402 transitions. [2021-02-19 19:50:33,633 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 402 transitions. Word has length 20 [2021-02-19 19:50:33,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:33,634 INFO L480 AbstractCegarLoop]: Abstraction has 176 states and 402 transitions. [2021-02-19 19:50:33,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6153846153846154) 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) [2021-02-19 19:50:33,634 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 402 transitions. [2021-02-19 19:50:33,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-19 19:50:33,636 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:33,636 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:33,850 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:33,850 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:33,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:33,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1371242645, now seen corresponding path program 8 times [2021-02-19 19:50:33,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:33,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954952095] [2021-02-19 19:50:33,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:50:33,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954952095] [2021-02-19 19:50:33,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322026557] [2021-02-19 19:50:33,900 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 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 [2021-02-19 19:50:33,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:50:33,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:33,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-02-19 19:50:33,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:33,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:33,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:33,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-02-19 19:50:33,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242074962] [2021-02-19 19:50:33,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-19 19:50:33,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:33,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-19 19:50:33,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-02-19 19:50:33,997 INFO L87 Difference]: Start difference. First operand 176 states and 402 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) 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) [2021-02-19 19:50:34,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:34,189 INFO L93 Difference]: Finished difference Result 248 states and 522 transitions. [2021-02-19 19:50:34,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-19 19:50:34,189 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) 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 20 [2021-02-19 19:50:34,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:34,190 INFO L225 Difference]: With dead ends: 248 [2021-02-19 19:50:34,190 INFO L226 Difference]: Without dead ends: 242 [2021-02-19 19:50:34,191 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2021-02-19 19:50:34,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-02-19 19:50:34,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 182. [2021-02-19 19:50:34,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.3259668508287294) internal successors, (421), 181 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 421 transitions. [2021-02-19 19:50:34,196 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 421 transitions. Word has length 20 [2021-02-19 19:50:34,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:34,198 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 421 transitions. [2021-02-19 19:50:34,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.6666666666666665) 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) [2021-02-19 19:50:34,198 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 421 transitions. [2021-02-19 19:50:34,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-19 19:50:34,199 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:34,199 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:34,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-02-19 19:50:34,412 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:34,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:34,412 INFO L82 PathProgramCache]: Analyzing trace with hash 274898709, now seen corresponding path program 9 times [2021-02-19 19:50:34,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:34,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102186916] [2021-02-19 19:50:34,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:34,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:50:34,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102186916] [2021-02-19 19:50:34,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386658816] [2021-02-19 19:50:34,452 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 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 [2021-02-19 19:50:34,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-02-19 19:50:34,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:34,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-02-19 19:50:34,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:34,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:34,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2021-02-19 19:50:34,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62233200] [2021-02-19 19:50:34,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-19 19:50:34,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:34,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-19 19:50:34,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-02-19 19:50:34,565 INFO L87 Difference]: Start difference. First operand 182 states and 421 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:34,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:34,763 INFO L93 Difference]: Finished difference Result 300 states and 621 transitions. [2021-02-19 19:50:34,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-19 19:50:34,763 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have 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 [2021-02-19 19:50:34,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:34,764 INFO L225 Difference]: With dead ends: 300 [2021-02-19 19:50:34,764 INFO L226 Difference]: Without dead ends: 296 [2021-02-19 19:50:34,765 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2021-02-19 19:50:34,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-02-19 19:50:34,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 182. [2021-02-19 19:50:34,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.314917127071823) internal successors, (419), 181 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) [2021-02-19 19:50:34,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 419 transitions. [2021-02-19 19:50:34,769 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 419 transitions. Word has length 20 [2021-02-19 19:50:34,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:34,769 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 419 transitions. [2021-02-19 19:50:34,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:34,769 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 419 transitions. [2021-02-19 19:50:34,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-19 19:50:34,770 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:34,770 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:34,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:34,984 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:34,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:34,985 INFO L82 PathProgramCache]: Analyzing trace with hash -231447557, now seen corresponding path program 10 times [2021-02-19 19:50:34,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:34,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330283103] [2021-02-19 19:50:34,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:35,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:35,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330283103] [2021-02-19 19:50:35,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825272517] [2021-02-19 19:50:35,028 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 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 [2021-02-19 19:50:35,050 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:50:35,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:35,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-02-19 19:50:35,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:35,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:35,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:35,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-02-19 19:50:35,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462877146] [2021-02-19 19:50:35,133 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-19 19:50:35,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:35,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-19 19:50:35,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-02-19 19:50:35,134 INFO L87 Difference]: Start difference. First operand 182 states and 419 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:35,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:35,360 INFO L93 Difference]: Finished difference Result 296 states and 623 transitions. [2021-02-19 19:50:35,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-19 19:50:35,362 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have 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 [2021-02-19 19:50:35,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:35,363 INFO L225 Difference]: With dead ends: 296 [2021-02-19 19:50:35,363 INFO L226 Difference]: Without dead ends: 284 [2021-02-19 19:50:35,364 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2021-02-19 19:50:35,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-02-19 19:50:35,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 193. [2021-02-19 19:50:35,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.3125) internal successors, (444), 192 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:35,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 444 transitions. [2021-02-19 19:50:35,369 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 444 transitions. Word has length 20 [2021-02-19 19:50:35,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:35,369 INFO L480 AbstractCegarLoop]: Abstraction has 193 states and 444 transitions. [2021-02-19 19:50:35,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:35,369 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 444 transitions. [2021-02-19 19:50:35,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-19 19:50:35,370 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:35,370 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:35,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-02-19 19:50:35,578 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:35,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:35,579 INFO L82 PathProgramCache]: Analyzing trace with hash -113847763, now seen corresponding path program 11 times [2021-02-19 19:50:35,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:35,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568888017] [2021-02-19 19:50:35,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:35,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568888017] [2021-02-19 19:50:35,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250379324] [2021-02-19 19:50:35,611 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-02-19 19:50:35,629 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-02-19 19:50:35,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:35,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:50:35,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:35,674 INFO L354 Elim1Store]: treesize reduction 17, result has 32.0 percent of original size [2021-02-19 19:50:35,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 35 [2021-02-19 19:50:35,694 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:50:35,699 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:50:35,703 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:50:35,704 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:25 [2021-02-19 19:50:35,754 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-02-19 19:50:35,754 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 16 [2021-02-19 19:50:35,755 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:50:35,760 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-02-19 19:50:35,760 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 18 [2021-02-19 19:50:35,764 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:50:35,768 INFO L628 ElimStorePlain]: treesize reduction 8, result has 27.3 percent of original size [2021-02-19 19:50:35,769 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:50:35,769 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:42, output treesize:3 [2021-02-19 19:50:35,775 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:35,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:35,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2021-02-19 19:50:35,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559471977] [2021-02-19 19:50:35,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 19:50:35,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:35,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 19:50:35,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-19 19:50:35,776 INFO L87 Difference]: Start difference. First operand 193 states and 444 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) [2021-02-19 19:50:35,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:35,808 INFO L93 Difference]: Finished difference Result 341 states and 750 transitions. [2021-02-19 19:50:35,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 19:50:35,809 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 22 [2021-02-19 19:50:35,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:35,810 INFO L225 Difference]: With dead ends: 341 [2021-02-19 19:50:35,810 INFO L226 Difference]: Without dead ends: 334 [2021-02-19 19:50:35,810 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-02-19 19:50:35,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-02-19 19:50:35,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 263. [2021-02-19 19:50:35,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 2.377862595419847) internal successors, (623), 262 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:35,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 623 transitions. [2021-02-19 19:50:35,817 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 623 transitions. Word has length 22 [2021-02-19 19:50:35,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:35,817 INFO L480 AbstractCegarLoop]: Abstraction has 263 states and 623 transitions. [2021-02-19 19:50:35,818 INFO L481 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) [2021-02-19 19:50:35,818 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 623 transitions. [2021-02-19 19:50:35,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-19 19:50:35,818 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:35,818 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:36,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-02-19 19:50:36,022 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:36,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:36,022 INFO L82 PathProgramCache]: Analyzing trace with hash 2101952557, now seen corresponding path program 12 times [2021-02-19 19:50:36,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:36,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850143420] [2021-02-19 19:50:36,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:36,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:50:36,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850143420] [2021-02-19 19:50:36,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167130425] [2021-02-19 19:50:36,051 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 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 [2021-02-19 19:50:36,074 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-02-19 19:50:36,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:36,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 19 conjunts are in the unsatisfiable core [2021-02-19 19:50:36,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:36,129 INFO L446 ElimStorePlain]: Different costs {1=[f], 3=[f_inv]} [2021-02-19 19:50:36,133 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:50:36,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 38 [2021-02-19 19:50:36,147 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:50:36,152 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:50:36,156 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:50:36,156 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2021-02-19 19:50:36,160 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:50:36,161 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:50:36,162 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:50:36,162 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:53, output treesize:3 [2021-02-19 19:50:36,170 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:50:36,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:36,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2021-02-19 19:50:36,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238284750] [2021-02-19 19:50:36,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 19:50:36,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:36,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 19:50:36,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-19 19:50:36,171 INFO L87 Difference]: Start difference. First operand 263 states and 623 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:36,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:36,213 INFO L93 Difference]: Finished difference Result 405 states and 917 transitions. [2021-02-19 19:50:36,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 19:50:36,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have 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 [2021-02-19 19:50:36,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:36,215 INFO L225 Difference]: With dead ends: 405 [2021-02-19 19:50:36,215 INFO L226 Difference]: Without dead ends: 396 [2021-02-19 19:50:36,216 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-19 19:50:36,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-02-19 19:50:36,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 318. [2021-02-19 19:50:36,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 2.444794952681388) internal successors, (775), 317 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:36,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 775 transitions. [2021-02-19 19:50:36,223 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 775 transitions. Word has length 22 [2021-02-19 19:50:36,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:36,223 INFO L480 AbstractCegarLoop]: Abstraction has 318 states and 775 transitions. [2021-02-19 19:50:36,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:36,223 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 775 transitions. [2021-02-19 19:50:36,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-19 19:50:36,223 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:36,224 INFO L506 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:36,438 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:36,438 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:36,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:36,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1733246419, now seen corresponding path program 13 times [2021-02-19 19:50:36,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:36,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468742207] [2021-02-19 19:50:36,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:36,469 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:50:36,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468742207] [2021-02-19 19:50:36,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185095993] [2021-02-19 19:50:36,469 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 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 [2021-02-19 19:50:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:36,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:50:36,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:36,516 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:50:36,517 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 25 [2021-02-19 19:50:36,518 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:50:36,522 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:50:36,522 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:50:36,522 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:20 [2021-02-19 19:50:36,613 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-02-19 19:50:36,614 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 18 [2021-02-19 19:50:36,615 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:50:36,618 INFO L628 ElimStorePlain]: treesize reduction 21, result has 12.5 percent of original size [2021-02-19 19:50:36,618 INFO L518 ElimStorePlain]: Eliminatee v_prenex_2 vanished before elimination [2021-02-19 19:50:36,619 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:50:36,619 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:42, output treesize:3 [2021-02-19 19:50:36,627 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:50:36,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:36,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2021-02-19 19:50:36,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727781955] [2021-02-19 19:50:36,628 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 19:50:36,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:36,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 19:50:36,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-19 19:50:36,629 INFO L87 Difference]: Start difference. First operand 318 states and 775 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:36,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:36,654 INFO L93 Difference]: Finished difference Result 499 states and 1143 transitions. [2021-02-19 19:50:36,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-19 19:50:36,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have 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 [2021-02-19 19:50:36,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:36,657 INFO L225 Difference]: With dead ends: 499 [2021-02-19 19:50:36,657 INFO L226 Difference]: Without dead ends: 492 [2021-02-19 19:50:36,657 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-19 19:50:36,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-02-19 19:50:36,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 374. [2021-02-19 19:50:36,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 2.474530831099196) internal successors, (923), 373 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:36,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 923 transitions. [2021-02-19 19:50:36,665 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 923 transitions. Word has length 22 [2021-02-19 19:50:36,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:36,665 INFO L480 AbstractCegarLoop]: Abstraction has 374 states and 923 transitions. [2021-02-19 19:50:36,665 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:36,665 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 923 transitions. [2021-02-19 19:50:36,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-19 19:50:36,666 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:36,666 INFO L506 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:36,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-02-19 19:50:36,874 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:36,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:36,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1335497583, now seen corresponding path program 14 times [2021-02-19 19:50:36,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:36,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054065155] [2021-02-19 19:50:36,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:36,928 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:36,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054065155] [2021-02-19 19:50:36,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168981904] [2021-02-19 19:50:36,928 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 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 [2021-02-19 19:50:36,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:50:36,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:36,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2021-02-19 19:50:36,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:37,070 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:37,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:37,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-02-19 19:50:37,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488886899] [2021-02-19 19:50:37,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-19 19:50:37,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:37,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-19 19:50:37,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-02-19 19:50:37,072 INFO L87 Difference]: Start difference. First operand 374 states and 923 transitions. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 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) [2021-02-19 19:50:37,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:37,515 INFO L93 Difference]: Finished difference Result 665 states and 1470 transitions. [2021-02-19 19:50:37,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-19 19:50:37,516 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 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 24 [2021-02-19 19:50:37,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:37,518 INFO L225 Difference]: With dead ends: 665 [2021-02-19 19:50:37,518 INFO L226 Difference]: Without dead ends: 665 [2021-02-19 19:50:37,518 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=402, Invalid=1080, Unknown=0, NotChecked=0, Total=1482 [2021-02-19 19:50:37,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-02-19 19:50:37,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 325. [2021-02-19 19:50:37,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 2.450617283950617) internal successors, (794), 324 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:37,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 794 transitions. [2021-02-19 19:50:37,525 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 794 transitions. Word has length 24 [2021-02-19 19:50:37,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:37,525 INFO L480 AbstractCegarLoop]: Abstraction has 325 states and 794 transitions. [2021-02-19 19:50:37,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 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) [2021-02-19 19:50:37,526 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 794 transitions. [2021-02-19 19:50:37,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-19 19:50:37,527 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:37,527 INFO L506 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:37,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:37,741 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:37,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:37,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1338575531, now seen corresponding path program 15 times [2021-02-19 19:50:37,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:37,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199700223] [2021-02-19 19:50:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:37,794 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:37,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199700223] [2021-02-19 19:50:37,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350665657] [2021-02-19 19:50:37,794 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 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 [2021-02-19 19:50:37,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-02-19 19:50:37,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:37,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2021-02-19 19:50:37,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:37,958 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:37,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:37,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-02-19 19:50:37,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799783043] [2021-02-19 19:50:37,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 19:50:37,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:37,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 19:50:37,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-02-19 19:50:37,959 INFO L87 Difference]: Start difference. First operand 325 states and 794 transitions. Second operand has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 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) [2021-02-19 19:50:38,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:38,508 INFO L93 Difference]: Finished difference Result 786 states and 1670 transitions. [2021-02-19 19:50:38,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-19 19:50:38,509 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 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 [2021-02-19 19:50:38,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:38,514 INFO L225 Difference]: With dead ends: 786 [2021-02-19 19:50:38,514 INFO L226 Difference]: Without dead ends: 742 [2021-02-19 19:50:38,515 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2021-02-19 19:50:38,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-02-19 19:50:38,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 342. [2021-02-19 19:50:38,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 2.4134897360703813) internal successors, (823), 341 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:38,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 823 transitions. [2021-02-19 19:50:38,522 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 823 transitions. Word has length 24 [2021-02-19 19:50:38,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:38,523 INFO L480 AbstractCegarLoop]: Abstraction has 342 states and 823 transitions. [2021-02-19 19:50:38,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.3529411764705883) internal successors, (40), 16 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) [2021-02-19 19:50:38,523 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 823 transitions. [2021-02-19 19:50:38,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-19 19:50:38,523 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:38,523 INFO L506 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:38,739 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:38,739 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:38,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:38,739 INFO L82 PathProgramCache]: Analyzing trace with hash 2002115007, now seen corresponding path program 16 times [2021-02-19 19:50:38,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:38,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778557685] [2021-02-19 19:50:38,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:38,784 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:38,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778557685] [2021-02-19 19:50:38,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444102354] [2021-02-19 19:50:38,784 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-02-19 19:50:38,814 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:50:38,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:38,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2021-02-19 19:50:38,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:38,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:38,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2021-02-19 19:50:38,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527691354] [2021-02-19 19:50:38,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 19:50:38,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:38,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 19:50:38,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-02-19 19:50:38,925 INFO L87 Difference]: Start difference. First operand 342 states and 823 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) 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) [2021-02-19 19:50:39,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:39,373 INFO L93 Difference]: Finished difference Result 742 states and 1645 transitions. [2021-02-19 19:50:39,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-02-19 19:50:39,374 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) 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 24 [2021-02-19 19:50:39,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:39,376 INFO L225 Difference]: With dead ends: 742 [2021-02-19 19:50:39,376 INFO L226 Difference]: Without dead ends: 740 [2021-02-19 19:50:39,376 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=387, Invalid=945, Unknown=0, NotChecked=0, Total=1332 [2021-02-19 19:50:39,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2021-02-19 19:50:39,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 404. [2021-02-19 19:50:39,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 2.424317617866005) internal successors, (977), 403 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:39,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 977 transitions. [2021-02-19 19:50:39,384 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 977 transitions. Word has length 24 [2021-02-19 19:50:39,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:39,385 INFO L480 AbstractCegarLoop]: Abstraction has 404 states and 977 transitions. [2021-02-19 19:50:39,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.533333333333333) 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) [2021-02-19 19:50:39,385 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 977 transitions. [2021-02-19 19:50:39,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-19 19:50:39,386 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:39,386 INFO L506 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:39,594 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:39,594 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:39,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:39,594 INFO L82 PathProgramCache]: Analyzing trace with hash 618216925, now seen corresponding path program 17 times [2021-02-19 19:50:39,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:39,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745506989] [2021-02-19 19:50:39,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:39,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:39,629 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:39,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745506989] [2021-02-19 19:50:39,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755297869] [2021-02-19 19:50:39,629 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 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 [2021-02-19 19:50:39,652 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-02-19 19:50:39,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:39,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2021-02-19 19:50:39,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:39,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:39,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2021-02-19 19:50:39,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743662994] [2021-02-19 19:50:39,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 19:50:39,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:39,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 19:50:39,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-02-19 19:50:39,763 INFO L87 Difference]: Start difference. First operand 404 states and 977 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) 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) [2021-02-19 19:50:40,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:40,165 INFO L93 Difference]: Finished difference Result 548 states and 1247 transitions. [2021-02-19 19:50:40,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-19 19:50:40,165 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) 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 24 [2021-02-19 19:50:40,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:40,167 INFO L225 Difference]: With dead ends: 548 [2021-02-19 19:50:40,167 INFO L226 Difference]: Without dead ends: 544 [2021-02-19 19:50:40,167 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=356, Invalid=976, Unknown=0, NotChecked=0, Total=1332 [2021-02-19 19:50:40,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-02-19 19:50:40,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 404. [2021-02-19 19:50:40,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 2.4218362282878414) internal successors, (976), 403 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:40,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 976 transitions. [2021-02-19 19:50:40,173 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 976 transitions. Word has length 24 [2021-02-19 19:50:40,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:40,173 INFO L480 AbstractCegarLoop]: Abstraction has 404 states and 976 transitions. [2021-02-19 19:50:40,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.533333333333333) 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) [2021-02-19 19:50:40,174 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 976 transitions. [2021-02-19 19:50:40,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-19 19:50:40,174 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:40,174 INFO L506 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:40,389 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-02-19 19:50:40,389 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:40,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:40,389 INFO L82 PathProgramCache]: Analyzing trace with hash 418904235, now seen corresponding path program 18 times [2021-02-19 19:50:40,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:40,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943485510] [2021-02-19 19:50:40,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:40,440 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:50:40,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943485510] [2021-02-19 19:50:40,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732082317] [2021-02-19 19:50:40,440 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 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-02-19 19:50:40,466 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-02-19 19:50:40,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:40,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2021-02-19 19:50:40,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:40,580 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:40,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:40,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2021-02-19 19:50:40,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232140577] [2021-02-19 19:50:40,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 19:50:40,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:40,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 19:50:40,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-02-19 19:50:40,582 INFO L87 Difference]: Start difference. First operand 404 states and 976 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) 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) [2021-02-19 19:50:40,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:40,950 INFO L93 Difference]: Finished difference Result 648 states and 1454 transitions. [2021-02-19 19:50:40,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-19 19:50:40,951 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) 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 24 [2021-02-19 19:50:40,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:40,952 INFO L225 Difference]: With dead ends: 648 [2021-02-19 19:50:40,952 INFO L226 Difference]: Without dead ends: 636 [2021-02-19 19:50:40,953 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2021-02-19 19:50:40,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-02-19 19:50:40,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 426. [2021-02-19 19:50:40,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 2.4376470588235293) internal successors, (1036), 425 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:40,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1036 transitions. [2021-02-19 19:50:40,961 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1036 transitions. Word has length 24 [2021-02-19 19:50:40,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:40,961 INFO L480 AbstractCegarLoop]: Abstraction has 426 states and 1036 transitions. [2021-02-19 19:50:40,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.6666666666666665) 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) [2021-02-19 19:50:40,961 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1036 transitions. [2021-02-19 19:50:40,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-19 19:50:40,962 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:40,962 INFO L506 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:41,171 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-02-19 19:50:41,171 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:41,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:41,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1558699323, now seen corresponding path program 19 times [2021-02-19 19:50:41,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:41,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318755771] [2021-02-19 19:50:41,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:41,217 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:41,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318755771] [2021-02-19 19:50:41,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4649495] [2021-02-19 19:50:41,217 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 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 [2021-02-19 19:50:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:41,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2021-02-19 19:50:41,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:41,354 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:41,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:41,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-02-19 19:50:41,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17648311] [2021-02-19 19:50:41,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 19:50:41,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:41,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 19:50:41,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-02-19 19:50:41,355 INFO L87 Difference]: Start difference. First operand 426 states and 1036 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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) [2021-02-19 19:50:41,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:41,747 INFO L93 Difference]: Finished difference Result 690 states and 1541 transitions. [2021-02-19 19:50:41,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-19 19:50:41,748 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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 24 [2021-02-19 19:50:41,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:41,750 INFO L225 Difference]: With dead ends: 690 [2021-02-19 19:50:41,750 INFO L226 Difference]: Without dead ends: 676 [2021-02-19 19:50:41,750 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=382, Invalid=1100, Unknown=0, NotChecked=0, Total=1482 [2021-02-19 19:50:41,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-02-19 19:50:41,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 412. [2021-02-19 19:50:41,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 2.4184914841849148) internal successors, (994), 411 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:41,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 994 transitions. [2021-02-19 19:50:41,756 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 994 transitions. Word has length 24 [2021-02-19 19:50:41,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:41,757 INFO L480 AbstractCegarLoop]: Abstraction has 412 states and 994 transitions. [2021-02-19 19:50:41,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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) [2021-02-19 19:50:41,757 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 994 transitions. [2021-02-19 19:50:41,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-19 19:50:41,757 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:41,757 INFO L506 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:41,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-02-19 19:50:41,980 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:41,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:41,980 INFO L82 PathProgramCache]: Analyzing trace with hash -107123601, now seen corresponding path program 20 times [2021-02-19 19:50:41,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:41,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378105970] [2021-02-19 19:50:41,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:42,034 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:50:42,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378105970] [2021-02-19 19:50:42,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127249164] [2021-02-19 19:50:42,034 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 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 [2021-02-19 19:50:42,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:50:42,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:42,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2021-02-19 19:50:42,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:42,175 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:42,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:42,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-02-19 19:50:42,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513231366] [2021-02-19 19:50:42,175 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 19:50:42,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:42,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 19:50:42,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-02-19 19:50:42,176 INFO L87 Difference]: Start difference. First operand 412 states and 994 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 16 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) [2021-02-19 19:50:42,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:42,573 INFO L93 Difference]: Finished difference Result 791 states and 1734 transitions. [2021-02-19 19:50:42,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-02-19 19:50:42,574 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 16 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 24 [2021-02-19 19:50:42,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:42,576 INFO L225 Difference]: With dead ends: 791 [2021-02-19 19:50:42,576 INFO L226 Difference]: Without dead ends: 791 [2021-02-19 19:50:42,576 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=414, Invalid=1068, Unknown=0, NotChecked=0, Total=1482 [2021-02-19 19:50:42,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-02-19 19:50:42,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 429. [2021-02-19 19:50:42,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 2.397196261682243) internal successors, (1026), 428 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:42,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 1026 transitions. [2021-02-19 19:50:42,583 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 1026 transitions. Word has length 24 [2021-02-19 19:50:42,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:42,583 INFO L480 AbstractCegarLoop]: Abstraction has 429 states and 1026 transitions. [2021-02-19 19:50:42,583 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 16 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) [2021-02-19 19:50:42,583 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 1026 transitions. [2021-02-19 19:50:42,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-19 19:50:42,584 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:42,584 INFO L506 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:42,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-02-19 19:50:42,798 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:42,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:42,798 INFO L82 PathProgramCache]: Analyzing trace with hash 978911915, now seen corresponding path program 21 times [2021-02-19 19:50:42,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:42,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413164831] [2021-02-19 19:50:42,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:42,839 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:50:42,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413164831] [2021-02-19 19:50:42,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179290741] [2021-02-19 19:50:42,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-02-19 19:50:42,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-02-19 19:50:42,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:42,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2021-02-19 19:50:42,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:42,956 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:42,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:42,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-02-19 19:50:42,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972631714] [2021-02-19 19:50:42,956 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 19:50:42,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:42,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 19:50:42,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-02-19 19:50:42,957 INFO L87 Difference]: Start difference. First operand 429 states and 1026 transitions. Second operand has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-02-19 19:50:43,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:43,300 INFO L93 Difference]: Finished difference Result 588 states and 1296 transitions. [2021-02-19 19:50:43,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-02-19 19:50:43,300 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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 [2021-02-19 19:50:43,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:43,301 INFO L225 Difference]: With dead ends: 588 [2021-02-19 19:50:43,301 INFO L226 Difference]: Without dead ends: 570 [2021-02-19 19:50:43,302 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=286, Invalid=904, Unknown=0, NotChecked=0, Total=1190 [2021-02-19 19:50:43,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-02-19 19:50:43,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 423. [2021-02-19 19:50:43,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 2.3981042654028437) internal successors, (1012), 422 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:43,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1012 transitions. [2021-02-19 19:50:43,308 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1012 transitions. Word has length 24 [2021-02-19 19:50:43,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:43,308 INFO L480 AbstractCegarLoop]: Abstraction has 423 states and 1012 transitions. [2021-02-19 19:50:43,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 15 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) [2021-02-19 19:50:43,308 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1012 transitions. [2021-02-19 19:50:43,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-19 19:50:43,309 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:43,309 INFO L506 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:43,523 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-02-19 19:50:43,523 INFO L428 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:43,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:43,524 INFO L82 PathProgramCache]: Analyzing trace with hash -828177041, now seen corresponding path program 22 times [2021-02-19 19:50:43,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:43,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055473501] [2021-02-19 19:50:43,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:50:43,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055473501] [2021-02-19 19:50:43,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850181906] [2021-02-19 19:50:43,571 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 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 [2021-02-19 19:50:43,590 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:50:43,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:43,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2021-02-19 19:50:43,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:43,704 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:43,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:43,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-02-19 19:50:43,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243224758] [2021-02-19 19:50:43,705 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 19:50:43,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:43,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 19:50:43,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-02-19 19:50:43,705 INFO L87 Difference]: Start difference. First operand 423 states and 1012 transitions. Second operand has 16 states, 16 states have (on average 2.625) 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) [2021-02-19 19:50:44,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:44,140 INFO L93 Difference]: Finished difference Result 898 states and 2037 transitions. [2021-02-19 19:50:44,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-02-19 19:50:44,141 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) 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 24 [2021-02-19 19:50:44,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:44,143 INFO L225 Difference]: With dead ends: 898 [2021-02-19 19:50:44,143 INFO L226 Difference]: Without dead ends: 898 [2021-02-19 19:50:44,143 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=520, Invalid=1202, Unknown=0, NotChecked=0, Total=1722 [2021-02-19 19:50:44,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2021-02-19 19:50:44,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 622. [2021-02-19 19:50:44,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 621 states have (on average 2.4621578099838968) internal successors, (1529), 621 states have internal predecessors, (1529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:44,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1529 transitions. [2021-02-19 19:50:44,152 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1529 transitions. Word has length 24 [2021-02-19 19:50:44,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:44,152 INFO L480 AbstractCegarLoop]: Abstraction has 622 states and 1529 transitions. [2021-02-19 19:50:44,152 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.625) 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) [2021-02-19 19:50:44,152 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1529 transitions. [2021-02-19 19:50:44,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-19 19:50:44,153 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:44,153 INFO L506 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:44,367 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:44,367 INFO L428 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:44,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:44,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1520769621, now seen corresponding path program 23 times [2021-02-19 19:50:44,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:44,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809790632] [2021-02-19 19:50:44,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:50:44,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809790632] [2021-02-19 19:50:44,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270542094] [2021-02-19 19:50:44,399 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 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 [2021-02-19 19:50:44,416 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-02-19 19:50:44,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:44,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2021-02-19 19:50:44,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:44,515 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:44,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:44,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2021-02-19 19:50:44,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8772009] [2021-02-19 19:50:44,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-19 19:50:44,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:44,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-19 19:50:44,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-02-19 19:50:44,516 INFO L87 Difference]: Start difference. First operand 622 states and 1529 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) 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) [2021-02-19 19:50:44,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:44,829 INFO L93 Difference]: Finished difference Result 871 states and 1982 transitions. [2021-02-19 19:50:44,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-02-19 19:50:44,830 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) 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 24 [2021-02-19 19:50:44,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:44,832 INFO L225 Difference]: With dead ends: 871 [2021-02-19 19:50:44,832 INFO L226 Difference]: Without dead ends: 867 [2021-02-19 19:50:44,832 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=342, Invalid=848, Unknown=0, NotChecked=0, Total=1190 [2021-02-19 19:50:44,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-02-19 19:50:44,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 622. [2021-02-19 19:50:44,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 621 states have (on average 2.4557165861513686) internal successors, (1525), 621 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:44,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1525 transitions. [2021-02-19 19:50:44,842 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1525 transitions. Word has length 24 [2021-02-19 19:50:44,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:44,842 INFO L480 AbstractCegarLoop]: Abstraction has 622 states and 1525 transitions. [2021-02-19 19:50:44,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.533333333333333) 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) [2021-02-19 19:50:44,842 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1525 transitions. [2021-02-19 19:50:44,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-19 19:50:44,843 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:44,843 INFO L506 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:45,058 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-02-19 19:50:45,058 INFO L428 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:45,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:45,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1014423355, now seen corresponding path program 24 times [2021-02-19 19:50:45,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:45,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736727970] [2021-02-19 19:50:45,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:45,106 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:50:45,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736727970] [2021-02-19 19:50:45,107 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944406245] [2021-02-19 19:50:45,107 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 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 [2021-02-19 19:50:45,123 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-02-19 19:50:45,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:45,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2021-02-19 19:50:45,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:45,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:45,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2021-02-19 19:50:45,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684510049] [2021-02-19 19:50:45,234 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-02-19 19:50:45,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:45,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-02-19 19:50:45,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2021-02-19 19:50:45,234 INFO L87 Difference]: Start difference. First operand 622 states and 1525 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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) [2021-02-19 19:50:45,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:45,575 INFO L93 Difference]: Finished difference Result 948 states and 2156 transitions. [2021-02-19 19:50:45,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-02-19 19:50:45,576 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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 24 [2021-02-19 19:50:45,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:45,578 INFO L225 Difference]: With dead ends: 948 [2021-02-19 19:50:45,578 INFO L226 Difference]: Without dead ends: 936 [2021-02-19 19:50:45,579 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=355, Invalid=977, Unknown=0, NotChecked=0, Total=1332 [2021-02-19 19:50:45,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2021-02-19 19:50:45,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 675. [2021-02-19 19:50:45,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 2.4614243323442135) internal successors, (1659), 674 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:45,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1659 transitions. [2021-02-19 19:50:45,588 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1659 transitions. Word has length 24 [2021-02-19 19:50:45,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:45,588 INFO L480 AbstractCegarLoop]: Abstraction has 675 states and 1659 transitions. [2021-02-19 19:50:45,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 15 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) [2021-02-19 19:50:45,588 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1659 transitions. [2021-02-19 19:50:45,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-19 19:50:45,589 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:45,589 INFO L506 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:45,803 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-02-19 19:50:45,804 INFO L428 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:45,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:45,804 INFO L82 PathProgramCache]: Analyzing trace with hash 787201975, now seen corresponding path program 25 times [2021-02-19 19:50:45,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:45,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341224466] [2021-02-19 19:50:45,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:45,847 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:45,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341224466] [2021-02-19 19:50:45,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109319746] [2021-02-19 19:50:45,848 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 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-02-19 19:50:45,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:45,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2021-02-19 19:50:45,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:45,968 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:45,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:45,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-02-19 19:50:45,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785711581] [2021-02-19 19:50:45,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 19:50:45,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:45,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 19:50:45,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2021-02-19 19:50:45,970 INFO L87 Difference]: Start difference. First operand 675 states and 1659 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 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) [2021-02-19 19:50:46,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:46,398 INFO L93 Difference]: Finished difference Result 948 states and 2180 transitions. [2021-02-19 19:50:46,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-19 19:50:46,399 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 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 24 [2021-02-19 19:50:46,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:46,401 INFO L225 Difference]: With dead ends: 948 [2021-02-19 19:50:46,401 INFO L226 Difference]: Without dead ends: 928 [2021-02-19 19:50:46,401 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=419, Invalid=1221, Unknown=0, NotChecked=0, Total=1640 [2021-02-19 19:50:46,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2021-02-19 19:50:46,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 699. [2021-02-19 19:50:46,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 2.4713467048710602) internal successors, (1725), 698 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:46,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1725 transitions. [2021-02-19 19:50:46,411 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1725 transitions. Word has length 24 [2021-02-19 19:50:46,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:46,411 INFO L480 AbstractCegarLoop]: Abstraction has 699 states and 1725 transitions. [2021-02-19 19:50:46,411 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 16 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) [2021-02-19 19:50:46,411 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1725 transitions. [2021-02-19 19:50:46,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-19 19:50:46,412 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:46,412 INFO L506 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:46,626 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-02-19 19:50:46,626 INFO L428 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:46,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:46,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1704918163, now seen corresponding path program 26 times [2021-02-19 19:50:46,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:46,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497614979] [2021-02-19 19:50:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:46,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:46,647 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:46,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497614979] [2021-02-19 19:50:46,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124245431] [2021-02-19 19:50:46,647 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 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 [2021-02-19 19:50:46,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:50:46,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:46,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 23 conjunts are in the unsatisfiable core [2021-02-19 19:50:46,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:46,728 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-02-19 19:50:46,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 51 [2021-02-19 19:50:46,743 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:50:46,751 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:50:46,759 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:50:46,759 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:64, output treesize:47 [2021-02-19 19:50:46,908 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-02-19 19:50:46,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 22 [2021-02-19 19:50:46,909 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:50:46,922 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:50:46,932 INFO L354 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2021-02-19 19:50:46,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 23 [2021-02-19 19:50:46,933 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:50:46,944 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:50:46,962 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-02-19 19:50:46,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 33 [2021-02-19 19:50:46,973 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 19:50:46,979 INFO L628 ElimStorePlain]: treesize reduction 16, result has 15.8 percent of original size [2021-02-19 19:50:46,979 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:50:46,979 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:103, output treesize:3 [2021-02-19 19:50:46,986 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:46,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:46,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2021-02-19 19:50:46,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826126706] [2021-02-19 19:50:46,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-19 19:50:46,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:46,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-19 19:50:46,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-19 19:50:46,987 INFO L87 Difference]: Start difference. First operand 699 states and 1725 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 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) [2021-02-19 19:50:47,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:47,060 INFO L93 Difference]: Finished difference Result 1035 states and 2478 transitions. [2021-02-19 19:50:47,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 19:50:47,060 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 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 26 [2021-02-19 19:50:47,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:47,063 INFO L225 Difference]: With dead ends: 1035 [2021-02-19 19:50:47,063 INFO L226 Difference]: Without dead ends: 1028 [2021-02-19 19:50:47,063 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-02-19 19:50:47,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2021-02-19 19:50:47,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 866. [2021-02-19 19:50:47,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 865 states have (on average 2.4959537572254336) internal successors, (2159), 865 states have internal predecessors, (2159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:47,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 2159 transitions. [2021-02-19 19:50:47,074 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 2159 transitions. Word has length 26 [2021-02-19 19:50:47,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:47,074 INFO L480 AbstractCegarLoop]: Abstraction has 866 states and 2159 transitions. [2021-02-19 19:50:47,074 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 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) [2021-02-19 19:50:47,074 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 2159 transitions. [2021-02-19 19:50:47,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-19 19:50:47,076 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:47,076 INFO L506 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:47,290 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:47,290 INFO L428 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:47,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:47,290 INFO L82 PathProgramCache]: Analyzing trace with hash 489556077, now seen corresponding path program 27 times [2021-02-19 19:50:47,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:47,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882294176] [2021-02-19 19:50:47,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:50:47,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882294176] [2021-02-19 19:50:47,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938376504] [2021-02-19 19:50:47,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-02-19 19:50:47,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-02-19 19:50:47,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:47,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 25 conjunts are in the unsatisfiable core [2021-02-19 19:50:47,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:47,418 INFO L446 ElimStorePlain]: Different costs {3=[f], 10=[f_inv]} [2021-02-19 19:50:47,431 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-02-19 19:50:47,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 60 [2021-02-19 19:50:47,447 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:50:47,456 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:50:47,466 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:50:47,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 53 [2021-02-19 19:50:47,481 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:50:47,482 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:50:47,483 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:50:47,483 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:84, output treesize:3 [2021-02-19 19:50:47,491 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:50:47,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:47,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2021-02-19 19:50:47,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192957076] [2021-02-19 19:50:47,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-19 19:50:47,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:47,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-19 19:50:47,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-02-19 19:50:47,492 INFO L87 Difference]: Start difference. First operand 866 states and 2159 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) [2021-02-19 19:50:47,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:47,540 INFO L93 Difference]: Finished difference Result 1098 states and 2666 transitions. [2021-02-19 19:50:47,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-19 19:50:47,541 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 26 [2021-02-19 19:50:47,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:47,544 INFO L225 Difference]: With dead ends: 1098 [2021-02-19 19:50:47,544 INFO L226 Difference]: Without dead ends: 1089 [2021-02-19 19:50:47,545 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-02-19 19:50:47,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2021-02-19 19:50:47,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 972. [2021-02-19 19:50:47,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 2.532440782698249) internal successors, (2459), 971 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:47,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 2459 transitions. [2021-02-19 19:50:47,558 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 2459 transitions. Word has length 26 [2021-02-19 19:50:47,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:47,558 INFO L480 AbstractCegarLoop]: Abstraction has 972 states and 2459 transitions. [2021-02-19 19:50:47,558 INFO L481 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) [2021-02-19 19:50:47,558 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 2459 transitions. [2021-02-19 19:50:47,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-19 19:50:47,559 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:47,559 INFO L506 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:47,773 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-02-19 19:50:47,774 INFO L428 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:47,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:47,774 INFO L82 PathProgramCache]: Analyzing trace with hash 610986861, now seen corresponding path program 28 times [2021-02-19 19:50:47,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:47,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806693252] [2021-02-19 19:50:47,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:50:47,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806693252] [2021-02-19 19:50:47,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692020980] [2021-02-19 19:50:47,795 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 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 [2021-02-19 19:50:47,830 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:50:47,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:47,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 21 conjunts are in the unsatisfiable core [2021-02-19 19:50:47,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:47,892 INFO L354 Elim1Store]: treesize reduction 8, result has 72.4 percent of original size [2021-02-19 19:50:47,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 43 [2021-02-19 19:50:47,894 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:50:47,900 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:50:47,901 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:50:47,901 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:32 [2021-02-19 19:50:47,992 INFO L446 ElimStorePlain]: Different costs {1=[f], 3=[v_prenex_10]} [2021-02-19 19:50:47,996 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-02-19 19:50:47,996 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2021-02-19 19:50:47,997 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:50:48,001 INFO L628 ElimStorePlain]: treesize reduction 30, result has 9.1 percent of original size [2021-02-19 19:50:48,001 INFO L518 ElimStorePlain]: Eliminatee v_prenex_10 vanished before elimination [2021-02-19 19:50:48,001 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:50:48,002 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:3 [2021-02-19 19:50:48,010 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:50:48,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:48,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2021-02-19 19:50:48,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826705793] [2021-02-19 19:50:48,011 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-19 19:50:48,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:48,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-19 19:50:48,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-19 19:50:48,011 INFO L87 Difference]: Start difference. First operand 972 states and 2459 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) [2021-02-19 19:50:48,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:48,060 INFO L93 Difference]: Finished difference Result 1360 states and 3305 transitions. [2021-02-19 19:50:48,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-19 19:50:48,060 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 26 [2021-02-19 19:50:48,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:48,064 INFO L225 Difference]: With dead ends: 1360 [2021-02-19 19:50:48,064 INFO L226 Difference]: Without dead ends: 1335 [2021-02-19 19:50:48,065 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-02-19 19:50:48,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-02-19 19:50:48,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1089. [2021-02-19 19:50:48,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 1088 states have (on average 2.557904411764706) internal successors, (2783), 1088 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) [2021-02-19 19:50:48,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 2783 transitions. [2021-02-19 19:50:48,081 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 2783 transitions. Word has length 26 [2021-02-19 19:50:48,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:48,081 INFO L480 AbstractCegarLoop]: Abstraction has 1089 states and 2783 transitions. [2021-02-19 19:50:48,081 INFO L481 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) [2021-02-19 19:50:48,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 2783 transitions. [2021-02-19 19:50:48,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-19 19:50:48,082 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:48,082 INFO L506 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:48,296 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:48,297 INFO L428 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:48,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:48,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1341853293, now seen corresponding path program 29 times [2021-02-19 19:50:48,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:48,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614736872] [2021-02-19 19:50:48,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:48,317 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:50:48,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614736872] [2021-02-19 19:50:48,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992568216] [2021-02-19 19:50:48,318 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-02-19 19:50:48,346 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-02-19 19:50:48,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:48,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 25 conjunts are in the unsatisfiable core [2021-02-19 19:50:48,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:48,427 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-02-19 19:50:48,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 57 [2021-02-19 19:50:48,441 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:50:48,449 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:50:48,456 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:50:48,456 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:70, output treesize:49 [2021-02-19 19:50:48,534 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-02-19 19:50:48,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 33 [2021-02-19 19:50:48,536 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:50:48,543 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-02-19 19:50:48,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 20 [2021-02-19 19:50:48,544 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:50:48,551 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-02-19 19:50:48,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 20 [2021-02-19 19:50:48,553 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 19:50:48,556 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-02-19 19:50:48,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 19 [2021-02-19 19:50:48,557 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 19:50:48,561 INFO L628 ElimStorePlain]: treesize reduction 9, result has 25.0 percent of original size [2021-02-19 19:50:48,561 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:50:48,561 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:137, output treesize:3 [2021-02-19 19:50:48,569 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:50:48,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:48,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2021-02-19 19:50:48,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207697480] [2021-02-19 19:50:48,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-19 19:50:48,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:48,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-19 19:50:48,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-02-19 19:50:48,571 INFO L87 Difference]: Start difference. First operand 1089 states and 2783 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) [2021-02-19 19:50:48,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:48,643 INFO L93 Difference]: Finished difference Result 1426 states and 3542 transitions. [2021-02-19 19:50:48,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 19:50:48,643 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 26 [2021-02-19 19:50:48,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:48,649 INFO L225 Difference]: With dead ends: 1426 [2021-02-19 19:50:48,650 INFO L226 Difference]: Without dead ends: 1419 [2021-02-19 19:50:48,650 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-02-19 19:50:48,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-02-19 19:50:48,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1225. [2021-02-19 19:50:48,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1224 states have (on average 2.5784313725490198) internal successors, (3156), 1224 states have internal predecessors, (3156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:48,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 3156 transitions. [2021-02-19 19:50:48,666 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 3156 transitions. Word has length 26 [2021-02-19 19:50:48,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:48,666 INFO L480 AbstractCegarLoop]: Abstraction has 1225 states and 3156 transitions. [2021-02-19 19:50:48,666 INFO L481 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) [2021-02-19 19:50:48,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 3156 transitions. [2021-02-19 19:50:48,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 19:50:48,667 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:48,667 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:48,878 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-02-19 19:50:48,879 INFO L428 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:48,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:48,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1629629521, now seen corresponding path program 30 times [2021-02-19 19:50:48,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:48,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636783445] [2021-02-19 19:50:48,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:48,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636783445] [2021-02-19 19:50:48,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809499051] [2021-02-19 19:50:48,952 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 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 [2021-02-19 19:50:48,973 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-02-19 19:50:48,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:48,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-02-19 19:50:48,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:49,111 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:49,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:49,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2021-02-19 19:50:49,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890495904] [2021-02-19 19:50:49,112 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-19 19:50:49,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:49,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-19 19:50:49,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-02-19 19:50:49,113 INFO L87 Difference]: Start difference. First operand 1225 states and 3156 transitions. Second operand has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 21 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) [2021-02-19 19:50:49,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:49,766 INFO L93 Difference]: Finished difference Result 1761 states and 4199 transitions. [2021-02-19 19:50:49,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-02-19 19:50:49,766 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 21 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 28 [2021-02-19 19:50:49,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:49,771 INFO L225 Difference]: With dead ends: 1761 [2021-02-19 19:50:49,771 INFO L226 Difference]: Without dead ends: 1761 [2021-02-19 19:50:49,771 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=757, Invalid=2105, Unknown=0, NotChecked=0, Total=2862 [2021-02-19 19:50:49,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1761 states. [2021-02-19 19:50:49,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1761 to 1090. [2021-02-19 19:50:49,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 1089 states have (on average 2.5629017447199267) internal successors, (2791), 1089 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:49,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 2791 transitions. [2021-02-19 19:50:49,786 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 2791 transitions. Word has length 28 [2021-02-19 19:50:49,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:49,786 INFO L480 AbstractCegarLoop]: Abstraction has 1090 states and 2791 transitions. [2021-02-19 19:50:49,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.272727272727273) internal successors, (50), 21 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) [2021-02-19 19:50:49,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 2791 transitions. [2021-02-19 19:50:49,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 19:50:49,787 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:49,787 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:50,001 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:50,002 INFO L428 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:50,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:50,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1328278507, now seen corresponding path program 31 times [2021-02-19 19:50:50,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:50,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972847117] [2021-02-19 19:50:50,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:50,063 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:50,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972847117] [2021-02-19 19:50:50,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039937296] [2021-02-19 19:50:50,063 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 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 [2021-02-19 19:50:50,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:50,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-02-19 19:50:50,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:50,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:50,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-02-19 19:50:50,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588974470] [2021-02-19 19:50:50,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-19 19:50:50,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:50,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-19 19:50:50,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2021-02-19 19:50:50,223 INFO L87 Difference]: Start difference. First operand 1090 states and 2791 transitions. Second operand has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 20 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) [2021-02-19 19:50:51,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:51,101 INFO L93 Difference]: Finished difference Result 2078 states and 4785 transitions. [2021-02-19 19:50:51,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-02-19 19:50:51,101 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 20 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 [2021-02-19 19:50:51,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:51,106 INFO L225 Difference]: With dead ends: 2078 [2021-02-19 19:50:51,106 INFO L226 Difference]: Without dead ends: 2007 [2021-02-19 19:50:51,107 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1149 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=946, Invalid=3086, Unknown=0, NotChecked=0, Total=4032 [2021-02-19 19:50:51,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2021-02-19 19:50:51,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1154. [2021-02-19 19:50:51,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 1153 states have (on average 2.5481352992194277) internal successors, (2938), 1153 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:51,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 2938 transitions. [2021-02-19 19:50:51,125 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 2938 transitions. Word has length 28 [2021-02-19 19:50:51,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:51,125 INFO L480 AbstractCegarLoop]: Abstraction has 1154 states and 2938 transitions. [2021-02-19 19:50:51,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 20 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) [2021-02-19 19:50:51,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 2938 transitions. [2021-02-19 19:50:51,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 19:50:51,126 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:51,126 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:51,339 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-02-19 19:50:51,340 INFO L428 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:51,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:51,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1272986813, now seen corresponding path program 32 times [2021-02-19 19:50:51,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:51,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683365562] [2021-02-19 19:50:51,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:51,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683365562] [2021-02-19 19:50:51,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347169575] [2021-02-19 19:50:51,388 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 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 [2021-02-19 19:50:51,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:50:51,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:51,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-02-19 19:50:51,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:51,552 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:51,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:51,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 17 [2021-02-19 19:50:51,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815441450] [2021-02-19 19:50:51,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-19 19:50:51,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:51,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-19 19:50:51,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-02-19 19:50:51,555 INFO L87 Difference]: Start difference. First operand 1154 states and 2938 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 17 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) [2021-02-19 19:50:52,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:52,287 INFO L93 Difference]: Finished difference Result 2302 states and 5553 transitions. [2021-02-19 19:50:52,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-02-19 19:50:52,288 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 17 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 [2021-02-19 19:50:52,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:52,297 INFO L225 Difference]: With dead ends: 2302 [2021-02-19 19:50:52,298 INFO L226 Difference]: Without dead ends: 2294 [2021-02-19 19:50:52,298 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=836, Invalid=2134, Unknown=0, NotChecked=0, Total=2970 [2021-02-19 19:50:52,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2021-02-19 19:50:52,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 1436. [2021-02-19 19:50:52,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 2.5491289198606273) internal successors, (3658), 1435 states have internal predecessors, (3658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:52,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 3658 transitions. [2021-02-19 19:50:52,319 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 3658 transitions. Word has length 28 [2021-02-19 19:50:52,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:52,319 INFO L480 AbstractCegarLoop]: Abstraction has 1436 states and 3658 transitions. [2021-02-19 19:50:52,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 17 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) [2021-02-19 19:50:52,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 3658 transitions. [2021-02-19 19:50:52,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 19:50:52,320 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:52,320 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:52,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-02-19 19:50:52,535 INFO L428 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:52,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:52,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1638082401, now seen corresponding path program 33 times [2021-02-19 19:50:52,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:52,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492333388] [2021-02-19 19:50:52,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:52,578 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:52,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492333388] [2021-02-19 19:50:52,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972563763] [2021-02-19 19:50:52,578 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 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 [2021-02-19 19:50:52,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-02-19 19:50:52,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:52,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-02-19 19:50:52,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:52,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:52,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 17 [2021-02-19 19:50:52,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734604166] [2021-02-19 19:50:52,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-19 19:50:52,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:52,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-19 19:50:52,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-02-19 19:50:52,747 INFO L87 Difference]: Start difference. First operand 1436 states and 3658 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 17 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) [2021-02-19 19:50:53,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:53,334 INFO L93 Difference]: Finished difference Result 1661 states and 4081 transitions. [2021-02-19 19:50:53,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-19 19:50:53,334 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 17 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 [2021-02-19 19:50:53,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:53,337 INFO L225 Difference]: With dead ends: 1661 [2021-02-19 19:50:53,337 INFO L226 Difference]: Without dead ends: 1657 [2021-02-19 19:50:53,337 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=647, Invalid=1903, Unknown=0, NotChecked=0, Total=2550 [2021-02-19 19:50:53,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1657 states. [2021-02-19 19:50:53,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1657 to 1436. [2021-02-19 19:50:53,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 1435 states have (on average 2.5477351916376305) internal successors, (3656), 1435 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:53,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 3656 transitions. [2021-02-19 19:50:53,352 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 3656 transitions. Word has length 28 [2021-02-19 19:50:53,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:53,352 INFO L480 AbstractCegarLoop]: Abstraction has 1436 states and 3656 transitions. [2021-02-19 19:50:53,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 17 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) [2021-02-19 19:50:53,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 3656 transitions. [2021-02-19 19:50:53,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 19:50:53,353 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:53,353 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:53,560 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-02-19 19:50:53,560 INFO L428 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:53,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:53,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1389080811, now seen corresponding path program 34 times [2021-02-19 19:50:53,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:53,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675155797] [2021-02-19 19:50:53,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:50:53,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675155797] [2021-02-19 19:50:53,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640274274] [2021-02-19 19:50:53,600 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 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 [2021-02-19 19:50:53,621 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:50:53,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:53,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-02-19 19:50:53,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:53,747 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:53,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:53,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 17 [2021-02-19 19:50:53,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27209144] [2021-02-19 19:50:53,748 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-19 19:50:53,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:53,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-19 19:50:53,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-02-19 19:50:53,748 INFO L87 Difference]: Start difference. First operand 1436 states and 3656 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) [2021-02-19 19:50:54,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:54,216 INFO L93 Difference]: Finished difference Result 2041 states and 4979 transitions. [2021-02-19 19:50:54,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-02-19 19:50:54,216 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 28 [2021-02-19 19:50:54,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:54,219 INFO L225 Difference]: With dead ends: 2041 [2021-02-19 19:50:54,219 INFO L226 Difference]: Without dead ends: 2026 [2021-02-19 19:50:54,219 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=421, Invalid=1301, Unknown=0, NotChecked=0, Total=1722 [2021-02-19 19:50:54,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2021-02-19 19:50:54,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1482. [2021-02-19 19:50:54,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1481 states have (on average 2.553004726536124) internal successors, (3781), 1481 states have internal predecessors, (3781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:54,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 3781 transitions. [2021-02-19 19:50:54,237 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 3781 transitions. Word has length 28 [2021-02-19 19:50:54,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:54,237 INFO L480 AbstractCegarLoop]: Abstraction has 1482 states and 3781 transitions. [2021-02-19 19:50:54,237 INFO L481 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) [2021-02-19 19:50:54,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 3781 transitions. [2021-02-19 19:50:54,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 19:50:54,239 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:54,239 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:54,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-02-19 19:50:54,439 INFO L428 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:54,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:54,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1766091397, now seen corresponding path program 35 times [2021-02-19 19:50:54,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:54,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855335383] [2021-02-19 19:50:54,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:54,485 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:54,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855335383] [2021-02-19 19:50:54,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461232221] [2021-02-19 19:50:54,485 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 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 [2021-02-19 19:50:54,504 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-02-19 19:50:54,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:54,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-02-19 19:50:54,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:54,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:54,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2021-02-19 19:50:54,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761480469] [2021-02-19 19:50:54,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-19 19:50:54,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:54,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-19 19:50:54,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-02-19 19:50:54,645 INFO L87 Difference]: Start difference. First operand 1482 states and 3781 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 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) [2021-02-19 19:50:55,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:55,276 INFO L93 Difference]: Finished difference Result 1955 states and 4722 transitions. [2021-02-19 19:50:55,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-02-19 19:50:55,276 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 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 [2021-02-19 19:50:55,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:55,279 INFO L225 Difference]: With dead ends: 1955 [2021-02-19 19:50:55,279 INFO L226 Difference]: Without dead ends: 1941 [2021-02-19 19:50:55,279 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 764 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=680, Invalid=2076, Unknown=0, NotChecked=0, Total=2756 [2021-02-19 19:50:55,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2021-02-19 19:50:55,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1492. [2021-02-19 19:50:55,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1491 states have (on average 2.551307847082495) internal successors, (3804), 1491 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:55,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 3804 transitions. [2021-02-19 19:50:55,296 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 3804 transitions. Word has length 28 [2021-02-19 19:50:55,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:55,297 INFO L480 AbstractCegarLoop]: Abstraction has 1492 states and 3804 transitions. [2021-02-19 19:50:55,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 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) [2021-02-19 19:50:55,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 3804 transitions. [2021-02-19 19:50:55,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 19:50:55,298 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:55,298 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:55,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-02-19 19:50:55,513 INFO L428 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:55,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:55,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1262446345, now seen corresponding path program 36 times [2021-02-19 19:50:55,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:55,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210325854] [2021-02-19 19:50:55,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:55,564 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:55,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210325854] [2021-02-19 19:50:55,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555738362] [2021-02-19 19:50:55,564 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 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 [2021-02-19 19:50:55,582 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-02-19 19:50:55,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:55,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-02-19 19:50:55,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:55,738 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:55,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:55,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-02-19 19:50:55,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343484444] [2021-02-19 19:50:55,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-19 19:50:55,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:55,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-19 19:50:55,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-02-19 19:50:55,739 INFO L87 Difference]: Start difference. First operand 1492 states and 3804 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 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) [2021-02-19 19:50:56,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:56,358 INFO L93 Difference]: Finished difference Result 2120 states and 5066 transitions. [2021-02-19 19:50:56,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-02-19 19:50:56,358 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 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 [2021-02-19 19:50:56,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:56,363 INFO L225 Difference]: With dead ends: 2120 [2021-02-19 19:50:56,363 INFO L226 Difference]: Without dead ends: 2094 [2021-02-19 19:50:56,364 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 878 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=724, Invalid=2246, Unknown=0, NotChecked=0, Total=2970 [2021-02-19 19:50:56,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2021-02-19 19:50:56,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 1363. [2021-02-19 19:50:56,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1362 states have (on average 2.530102790014684) internal successors, (3446), 1362 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:56,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 3446 transitions. [2021-02-19 19:50:56,381 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 3446 transitions. Word has length 28 [2021-02-19 19:50:56,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:56,381 INFO L480 AbstractCegarLoop]: Abstraction has 1363 states and 3446 transitions. [2021-02-19 19:50:56,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 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) [2021-02-19 19:50:56,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 3446 transitions. [2021-02-19 19:50:56,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 19:50:56,382 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:56,382 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:56,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-02-19 19:50:56,597 INFO L428 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:56,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:56,597 INFO L82 PathProgramCache]: Analyzing trace with hash 632016303, now seen corresponding path program 37 times [2021-02-19 19:50:56,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:56,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110809969] [2021-02-19 19:50:56,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:56,655 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:50:56,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110809969] [2021-02-19 19:50:56,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373147977] [2021-02-19 19:50:56,656 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 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 [2021-02-19 19:50:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:56,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-02-19 19:50:56,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:56,808 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:56,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:56,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-02-19 19:50:56,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76540089] [2021-02-19 19:50:56,808 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-19 19:50:56,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:56,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-19 19:50:56,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2021-02-19 19:50:56,809 INFO L87 Difference]: Start difference. First operand 1363 states and 3446 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:57,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:57,482 INFO L93 Difference]: Finished difference Result 2078 states and 4835 transitions. [2021-02-19 19:50:57,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-02-19 19:50:57,483 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-02-19 19:50:57,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:57,485 INFO L225 Difference]: With dead ends: 2078 [2021-02-19 19:50:57,485 INFO L226 Difference]: Without dead ends: 2078 [2021-02-19 19:50:57,486 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=756, Invalid=2106, Unknown=0, NotChecked=0, Total=2862 [2021-02-19 19:50:57,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2021-02-19 19:50:57,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 1171. [2021-02-19 19:50:57,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1170 states have (on average 2.500854700854701) internal successors, (2926), 1170 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:57,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 2926 transitions. [2021-02-19 19:50:57,500 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 2926 transitions. Word has length 28 [2021-02-19 19:50:57,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:57,500 INFO L480 AbstractCegarLoop]: Abstraction has 1171 states and 2926 transitions. [2021-02-19 19:50:57,500 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 20 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:57,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 2926 transitions. [2021-02-19 19:50:57,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 19:50:57,501 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:57,501 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:57,715 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-02-19 19:50:57,715 INFO L428 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:57,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:57,716 INFO L82 PathProgramCache]: Analyzing trace with hash 635094251, now seen corresponding path program 38 times [2021-02-19 19:50:57,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:57,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553485981] [2021-02-19 19:50:57,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:57,772 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:50:57,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553485981] [2021-02-19 19:50:57,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21978914] [2021-02-19 19:50:57,773 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 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 [2021-02-19 19:50:57,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:50:57,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:57,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-02-19 19:50:57,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:50:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:57,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:57,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-02-19 19:50:57,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902936952] [2021-02-19 19:50:57,937 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-19 19:50:57,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:57,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-19 19:50:57,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-02-19 19:50:57,937 INFO L87 Difference]: Start difference. First operand 1171 states and 2926 transitions. Second operand has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 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) [2021-02-19 19:50:58,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:58,566 INFO L93 Difference]: Finished difference Result 1575 states and 3659 transitions. [2021-02-19 19:50:58,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-02-19 19:50:58,567 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 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 [2021-02-19 19:50:58,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:58,569 INFO L225 Difference]: With dead ends: 1575 [2021-02-19 19:50:58,569 INFO L226 Difference]: Without dead ends: 1536 [2021-02-19 19:50:58,569 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 797 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=599, Invalid=2053, Unknown=0, NotChecked=0, Total=2652 [2021-02-19 19:50:58,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2021-02-19 19:50:58,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1078. [2021-02-19 19:50:58,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1077 states have (on average 2.4753946146703805) internal successors, (2666), 1077 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:58,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 2666 transitions. [2021-02-19 19:50:58,582 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 2666 transitions. Word has length 28 [2021-02-19 19:50:58,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:58,582 INFO L480 AbstractCegarLoop]: Abstraction has 1078 states and 2666 transitions. [2021-02-19 19:50:58,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.35) internal successors, (47), 19 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) [2021-02-19 19:50:58,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 2666 transitions. [2021-02-19 19:50:58,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 19:50:58,583 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:58,583 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:58,797 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:58,797 INFO L428 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:58,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:58,797 INFO L82 PathProgramCache]: Analyzing trace with hash 464537519, now seen corresponding path program 39 times [2021-02-19 19:50:58,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:58,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252334701] [2021-02-19 19:50:58,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:50:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:50:58,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252334701] [2021-02-19 19:50:58,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952207920] [2021-02-19 19:50:58,848 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 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-02-19 19:50:58,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-02-19 19:50:58,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:50:58,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-02-19 19:50:58,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:50:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:50:59,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:50:59,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-02-19 19:50:59,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307585809] [2021-02-19 19:50:59,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-19 19:50:59,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:50:59,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-19 19:50:59,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-02-19 19:50:59,010 INFO L87 Difference]: Start difference. First operand 1078 states and 2666 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) [2021-02-19 19:50:59,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:50:59,742 INFO L93 Difference]: Finished difference Result 1983 states and 4574 transitions. [2021-02-19 19:50:59,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-02-19 19:50:59,743 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 28 [2021-02-19 19:50:59,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:50:59,745 INFO L225 Difference]: With dead ends: 1983 [2021-02-19 19:50:59,745 INFO L226 Difference]: Without dead ends: 1983 [2021-02-19 19:50:59,746 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=892, Invalid=2300, Unknown=0, NotChecked=0, Total=3192 [2021-02-19 19:50:59,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2021-02-19 19:50:59,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1181. [2021-02-19 19:50:59,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 1180 states have (on average 2.440677966101695) internal successors, (2880), 1180 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:50:59,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 2880 transitions. [2021-02-19 19:50:59,760 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 2880 transitions. Word has length 28 [2021-02-19 19:50:59,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:50:59,760 INFO L480 AbstractCegarLoop]: Abstraction has 1181 states and 2880 transitions. [2021-02-19 19:50:59,760 INFO L481 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) [2021-02-19 19:50:59,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 2880 transitions. [2021-02-19 19:50:59,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 19:50:59,761 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:50:59,761 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:50:59,974 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-02-19 19:50:59,974 INFO L428 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:50:59,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:50:59,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1550573035, now seen corresponding path program 40 times [2021-02-19 19:50:59,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:50:59,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503584384] [2021-02-19 19:50:59,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:50:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:00,017 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:00,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503584384] [2021-02-19 19:51:00,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448957013] [2021-02-19 19:51:00,018 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 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 [2021-02-19 19:51:00,034 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:51:00,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:00,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-02-19 19:51:00,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:00,164 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:00,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:00,164 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2021-02-19 19:51:00,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465580217] [2021-02-19 19:51:00,165 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-19 19:51:00,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:00,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-19 19:51:00,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-02-19 19:51:00,165 INFO L87 Difference]: Start difference. First operand 1181 states and 2880 transitions. Second operand has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 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) [2021-02-19 19:51:00,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:00,760 INFO L93 Difference]: Finished difference Result 1515 states and 3517 transitions. [2021-02-19 19:51:00,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-02-19 19:51:00,760 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 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 [2021-02-19 19:51:00,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:00,761 INFO L225 Difference]: With dead ends: 1515 [2021-02-19 19:51:00,761 INFO L226 Difference]: Without dead ends: 1497 [2021-02-19 19:51:00,762 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=519, Invalid=1737, Unknown=0, NotChecked=0, Total=2256 [2021-02-19 19:51:00,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-02-19 19:51:00,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1209. [2021-02-19 19:51:00,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 1208 states have (on average 2.447019867549669) internal successors, (2956), 1208 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:00,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 2956 transitions. [2021-02-19 19:51:00,774 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 2956 transitions. Word has length 28 [2021-02-19 19:51:00,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:00,774 INFO L480 AbstractCegarLoop]: Abstraction has 1209 states and 2956 transitions. [2021-02-19 19:51:00,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.473684210526316) internal successors, (47), 18 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) [2021-02-19 19:51:00,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 2956 transitions. [2021-02-19 19:51:00,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 19:51:00,776 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:00,776 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:00,979 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:00,980 INFO L428 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:00,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:00,980 INFO L82 PathProgramCache]: Analyzing trace with hash -594853457, now seen corresponding path program 41 times [2021-02-19 19:51:00,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:00,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515993472] [2021-02-19 19:51:00,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:00,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:01,035 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:01,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515993472] [2021-02-19 19:51:01,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401949497] [2021-02-19 19:51:01,035 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 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 [2021-02-19 19:51:01,055 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-02-19 19:51:01,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:01,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-02-19 19:51:01,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:01,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:01,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2021-02-19 19:51:01,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007353900] [2021-02-19 19:51:01,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-19 19:51:01,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:01,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-19 19:51:01,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-02-19 19:51:01,192 INFO L87 Difference]: Start difference. First operand 1209 states and 2956 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 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) [2021-02-19 19:51:01,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:01,949 INFO L93 Difference]: Finished difference Result 2391 states and 5676 transitions. [2021-02-19 19:51:01,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-02-19 19:51:01,950 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 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 28 [2021-02-19 19:51:01,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:01,951 INFO L225 Difference]: With dead ends: 2391 [2021-02-19 19:51:01,951 INFO L226 Difference]: Without dead ends: 2391 [2021-02-19 19:51:01,952 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1207 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1080, Invalid=2580, Unknown=0, NotChecked=0, Total=3660 [2021-02-19 19:51:01,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2391 states. [2021-02-19 19:51:01,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2391 to 1853. [2021-02-19 19:51:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1853 states, 1852 states have (on average 2.5) internal successors, (4630), 1852 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:01,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1853 states to 1853 states and 4630 transitions. [2021-02-19 19:51:01,973 INFO L78 Accepts]: Start accepts. Automaton has 1853 states and 4630 transitions. Word has length 28 [2021-02-19 19:51:01,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:01,973 INFO L480 AbstractCegarLoop]: Abstraction has 1853 states and 4630 transitions. [2021-02-19 19:51:01,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 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) [2021-02-19 19:51:01,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1853 states and 4630 transitions. [2021-02-19 19:51:01,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 19:51:01,975 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:01,975 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:02,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,42 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:02,189 INFO L428 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:02,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:02,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1754093205, now seen corresponding path program 42 times [2021-02-19 19:51:02,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:02,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134720377] [2021-02-19 19:51:02,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:02,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134720377] [2021-02-19 19:51:02,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152293627] [2021-02-19 19:51:02,240 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 [2021-02-19 19:51:02,258 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-02-19 19:51:02,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:02,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-02-19 19:51:02,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:02,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:02,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11] total 17 [2021-02-19 19:51:02,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074137311] [2021-02-19 19:51:02,385 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-19 19:51:02,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:02,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-19 19:51:02,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-02-19 19:51:02,385 INFO L87 Difference]: Start difference. First operand 1853 states and 4630 transitions. Second operand has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 17 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) [2021-02-19 19:51:02,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:02,903 INFO L93 Difference]: Finished difference Result 2323 states and 5527 transitions. [2021-02-19 19:51:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-19 19:51:02,904 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 17 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 [2021-02-19 19:51:02,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:02,906 INFO L225 Difference]: With dead ends: 2323 [2021-02-19 19:51:02,906 INFO L226 Difference]: Without dead ends: 2319 [2021-02-19 19:51:02,906 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 633 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=634, Invalid=1622, Unknown=0, NotChecked=0, Total=2256 [2021-02-19 19:51:02,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2319 states. [2021-02-19 19:51:02,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2319 to 1827. [2021-02-19 19:51:02,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1826 states have (on average 2.4961664841182913) internal successors, (4558), 1826 states have internal predecessors, (4558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:02,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 4558 transitions. [2021-02-19 19:51:02,925 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 4558 transitions. Word has length 28 [2021-02-19 19:51:02,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:02,925 INFO L480 AbstractCegarLoop]: Abstraction has 1827 states and 4558 transitions. [2021-02-19 19:51:02,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 17 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) [2021-02-19 19:51:02,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 4558 transitions. [2021-02-19 19:51:02,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 19:51:02,927 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:02,927 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:03,127 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:03,128 INFO L428 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:03,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:03,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1247746939, now seen corresponding path program 43 times [2021-02-19 19:51:03,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:03,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755222786] [2021-02-19 19:51:03,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:03,173 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:03,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755222786] [2021-02-19 19:51:03,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45595189] [2021-02-19 19:51:03,173 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-02-19 19:51:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:03,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-02-19 19:51:03,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:03,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:03,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2021-02-19 19:51:03,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327722960] [2021-02-19 19:51:03,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-02-19 19:51:03,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:03,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-02-19 19:51:03,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2021-02-19 19:51:03,329 INFO L87 Difference]: Start difference. First operand 1827 states and 4558 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 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) [2021-02-19 19:51:03,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:03,872 INFO L93 Difference]: Finished difference Result 2472 states and 5895 transitions. [2021-02-19 19:51:03,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-19 19:51:03,872 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 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 [2021-02-19 19:51:03,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:03,874 INFO L225 Difference]: With dead ends: 2472 [2021-02-19 19:51:03,874 INFO L226 Difference]: Without dead ends: 2460 [2021-02-19 19:51:03,874 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 664 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=613, Invalid=1739, Unknown=0, NotChecked=0, Total=2352 [2021-02-19 19:51:03,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-02-19 19:51:03,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 1976. [2021-02-19 19:51:03,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 2.5063291139240507) internal successors, (4950), 1975 states have internal predecessors, (4950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:03,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 4950 transitions. [2021-02-19 19:51:03,895 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 4950 transitions. Word has length 28 [2021-02-19 19:51:03,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:03,895 INFO L480 AbstractCegarLoop]: Abstraction has 1976 states and 4950 transitions. [2021-02-19 19:51:03,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 18 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) [2021-02-19 19:51:03,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 4950 transitions. [2021-02-19 19:51:03,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 19:51:03,897 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:03,897 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:04,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:04,097 INFO L428 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:04,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:04,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1020525559, now seen corresponding path program 44 times [2021-02-19 19:51:04,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:04,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780960521] [2021-02-19 19:51:04,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:04,148 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:04,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780960521] [2021-02-19 19:51:04,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091044212] [2021-02-19 19:51:04,149 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 [2021-02-19 19:51:04,166 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:51:04,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:04,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-02-19 19:51:04,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:04,309 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:04,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:04,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-02-19 19:51:04,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895861877] [2021-02-19 19:51:04,310 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-19 19:51:04,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:04,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-19 19:51:04,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-02-19 19:51:04,310 INFO L87 Difference]: Start difference. First operand 1976 states and 4950 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 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) [2021-02-19 19:51:04,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:04,899 INFO L93 Difference]: Finished difference Result 2770 states and 6589 transitions. [2021-02-19 19:51:04,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-02-19 19:51:04,899 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 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 [2021-02-19 19:51:04,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:04,901 INFO L225 Difference]: With dead ends: 2770 [2021-02-19 19:51:04,901 INFO L226 Difference]: Without dead ends: 2750 [2021-02-19 19:51:04,902 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=662, Invalid=1990, Unknown=0, NotChecked=0, Total=2652 [2021-02-19 19:51:04,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2750 states. [2021-02-19 19:51:04,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2750 to 2206. [2021-02-19 19:51:04,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2206 states, 2205 states have (on average 2.510204081632653) internal successors, (5535), 2205 states have internal predecessors, (5535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 5535 transitions. [2021-02-19 19:51:04,926 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 5535 transitions. Word has length 28 [2021-02-19 19:51:04,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:04,926 INFO L480 AbstractCegarLoop]: Abstraction has 2206 states and 5535 transitions. [2021-02-19 19:51:04,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 19 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) [2021-02-19 19:51:04,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 5535 transitions. [2021-02-19 19:51:04,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-19 19:51:04,928 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:04,928 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:05,142 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-02-19 19:51:05,142 INFO L428 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:05,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:05,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1704111475, now seen corresponding path program 45 times [2021-02-19 19:51:05,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:05,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029351655] [2021-02-19 19:51:05,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:05,201 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:05,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029351655] [2021-02-19 19:51:05,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237649524] [2021-02-19 19:51:05,201 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 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-02-19 19:51:05,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-02-19 19:51:05,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:05,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2021-02-19 19:51:05,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:05,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:05,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-02-19 19:51:05,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246704967] [2021-02-19 19:51:05,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-19 19:51:05,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:05,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-19 19:51:05,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-02-19 19:51:05,368 INFO L87 Difference]: Start difference. First operand 2206 states and 5535 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:06,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:06,013 INFO L93 Difference]: Finished difference Result 2769 states and 6659 transitions. [2021-02-19 19:51:06,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-02-19 19:51:06,013 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-02-19 19:51:06,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:06,016 INFO L225 Difference]: With dead ends: 2769 [2021-02-19 19:51:06,016 INFO L226 Difference]: Without dead ends: 2741 [2021-02-19 19:51:06,016 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=778, Invalid=2414, Unknown=0, NotChecked=0, Total=3192 [2021-02-19 19:51:06,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2021-02-19 19:51:06,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 2259. [2021-02-19 19:51:06,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 2258 states have (on average 2.5230292294065544) internal successors, (5697), 2258 states have internal predecessors, (5697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:06,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 5697 transitions. [2021-02-19 19:51:06,038 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 5697 transitions. Word has length 28 [2021-02-19 19:51:06,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:06,038 INFO L480 AbstractCegarLoop]: Abstraction has 2259 states and 5697 transitions. [2021-02-19 19:51:06,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:06,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 5697 transitions. [2021-02-19 19:51:06,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-19 19:51:06,040 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:06,040 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:06,246 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-02-19 19:51:06,246 INFO L428 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:06,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:06,246 INFO L82 PathProgramCache]: Analyzing trace with hash 666219437, now seen corresponding path program 46 times [2021-02-19 19:51:06,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:06,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018495128] [2021-02-19 19:51:06,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:06,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:06,271 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:06,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018495128] [2021-02-19 19:51:06,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007119529] [2021-02-19 19:51:06,271 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 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 [2021-02-19 19:51:06,300 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:51:06,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:06,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 27 conjunts are in the unsatisfiable core [2021-02-19 19:51:06,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:06,368 INFO L354 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2021-02-19 19:51:06,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 65 [2021-02-19 19:51:06,370 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:06,389 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:06,390 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:51:06,390 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:64, output treesize:92 [2021-02-19 19:51:06,728 INFO L354 Elim1Store]: treesize reduction 41, result has 16.3 percent of original size [2021-02-19 19:51:06,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 62 treesize of output 38 [2021-02-19 19:51:06,729 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:06,774 INFO L628 ElimStorePlain]: treesize reduction 51, result has 73.4 percent of original size [2021-02-19 19:51:06,789 INFO L354 Elim1Store]: treesize reduction 42, result has 14.3 percent of original size [2021-02-19 19:51:06,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 28 [2021-02-19 19:51:06,790 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:06,809 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:06,846 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-02-19 19:51:06,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 52 [2021-02-19 19:51:06,848 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:06,855 INFO L628 ElimStorePlain]: treesize reduction 56, result has 5.1 percent of original size [2021-02-19 19:51:06,855 INFO L518 ElimStorePlain]: Eliminatee v_prenex_17 vanished before elimination [2021-02-19 19:51:06,855 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:51:06,855 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 8 variables, input treesize:242, output treesize:3 [2021-02-19 19:51:06,864 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:06,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:06,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 14 [2021-02-19 19:51:06,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59641751] [2021-02-19 19:51:06,865 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-19 19:51:06,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:06,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-19 19:51:06,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-02-19 19:51:06,865 INFO L87 Difference]: Start difference. First operand 2259 states and 5697 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 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) [2021-02-19 19:51:07,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:07,004 INFO L93 Difference]: Finished difference Result 2998 states and 7342 transitions. [2021-02-19 19:51:07,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-19 19:51:07,004 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 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 30 [2021-02-19 19:51:07,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:07,007 INFO L225 Difference]: With dead ends: 2998 [2021-02-19 19:51:07,007 INFO L226 Difference]: Without dead ends: 2991 [2021-02-19 19:51:07,007 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-02-19 19:51:07,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2021-02-19 19:51:07,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 2615. [2021-02-19 19:51:07,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2615 states, 2614 states have (on average 2.5355776587605203) internal successors, (6628), 2614 states have internal predecessors, (6628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:07,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2615 states to 2615 states and 6628 transitions. [2021-02-19 19:51:07,035 INFO L78 Accepts]: Start accepts. Automaton has 2615 states and 6628 transitions. Word has length 30 [2021-02-19 19:51:07,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:07,035 INFO L480 AbstractCegarLoop]: Abstraction has 2615 states and 6628 transitions. [2021-02-19 19:51:07,035 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 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) [2021-02-19 19:51:07,035 INFO L276 IsEmpty]: Start isEmpty. Operand 2615 states and 6628 transitions. [2021-02-19 19:51:07,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-19 19:51:07,037 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:07,037 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:07,242 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-02-19 19:51:07,242 INFO L428 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:07,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:07,243 INFO L82 PathProgramCache]: Analyzing trace with hash -453800019, now seen corresponding path program 47 times [2021-02-19 19:51:07,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:07,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86651414] [2021-02-19 19:51:07,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:51:07,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86651414] [2021-02-19 19:51:07,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881771205] [2021-02-19 19:51:07,273 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 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-02-19 19:51:07,303 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-02-19 19:51:07,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:07,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 31 conjunts are in the unsatisfiable core [2021-02-19 19:51:07,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:07,442 INFO L354 Elim1Store]: treesize reduction 114, result has 37.0 percent of original size [2021-02-19 19:51:07,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 82 treesize of output 99 [2021-02-19 19:51:07,444 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:07,456 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:07,457 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:51:07,457 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:82, output treesize:86 [2021-02-19 19:51:07,554 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-02-19 19:51:07,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 27 [2021-02-19 19:51:07,555 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:07,563 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-02-19 19:51:07,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 1 [2021-02-19 19:51:07,563 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:07,574 INFO L354 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2021-02-19 19:51:07,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 25 [2021-02-19 19:51:07,575 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:07,581 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-02-19 19:51:07,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 20 [2021-02-19 19:51:07,583 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:07,594 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-02-19 19:51:07,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 29 [2021-02-19 19:51:07,595 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:07,602 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-02-19 19:51:07,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 20 [2021-02-19 19:51:07,603 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:07,609 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-02-19 19:51:07,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 24 [2021-02-19 19:51:07,610 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:07,617 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-02-19 19:51:07,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 23 [2021-02-19 19:51:07,618 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:07,624 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-02-19 19:51:07,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 17 [2021-02-19 19:51:07,625 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:07,635 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-02-19 19:51:07,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 28 [2021-02-19 19:51:07,637 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:07,643 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-02-19 19:51:07,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 24 [2021-02-19 19:51:07,644 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:07,650 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-02-19 19:51:07,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 21 [2021-02-19 19:51:07,651 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:07,655 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-02-19 19:51:07,655 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 13 [2021-02-19 19:51:07,656 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:07,660 INFO L354 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-02-19 19:51:07,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 28 [2021-02-19 19:51:07,661 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:07,662 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:07,662 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:51:07,662 INFO L247 ElimStorePlain]: Needed 15 recursive calls to eliminate 2 variables, input treesize:623, output treesize:3 [2021-02-19 19:51:07,673 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:07,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:07,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 14 [2021-02-19 19:51:07,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690149428] [2021-02-19 19:51:07,674 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-19 19:51:07,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:07,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-19 19:51:07,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-02-19 19:51:07,674 INFO L87 Difference]: Start difference. First operand 2615 states and 6628 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 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) [2021-02-19 19:51:07,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:07,805 INFO L93 Difference]: Finished difference Result 3125 states and 7770 transitions. [2021-02-19 19:51:07,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-19 19:51:07,805 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 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 30 [2021-02-19 19:51:07,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:07,808 INFO L225 Difference]: With dead ends: 3125 [2021-02-19 19:51:07,808 INFO L226 Difference]: Without dead ends: 3109 [2021-02-19 19:51:07,808 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-02-19 19:51:07,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3109 states. [2021-02-19 19:51:07,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3109 to 2831. [2021-02-19 19:51:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2831 states, 2830 states have (on average 2.5547703180212014) internal successors, (7230), 2830 states have internal predecessors, (7230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:07,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2831 states to 2831 states and 7230 transitions. [2021-02-19 19:51:07,849 INFO L78 Accepts]: Start accepts. Automaton has 2831 states and 7230 transitions. Word has length 30 [2021-02-19 19:51:07,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:07,849 INFO L480 AbstractCegarLoop]: Abstraction has 2831 states and 7230 transitions. [2021-02-19 19:51:07,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 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) [2021-02-19 19:51:07,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2831 states and 7230 transitions. [2021-02-19 19:51:07,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-19 19:51:07,851 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:07,852 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:08,062 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:08,063 INFO L428 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:08,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:08,063 INFO L82 PathProgramCache]: Analyzing trace with hash 942773165, now seen corresponding path program 48 times [2021-02-19 19:51:08,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:08,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506149020] [2021-02-19 19:51:08,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:08,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:08,087 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:51:08,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506149020] [2021-02-19 19:51:08,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136672956] [2021-02-19 19:51:08,087 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 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-02-19 19:51:08,112 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-02-19 19:51:08,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:08,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 33 conjunts are in the unsatisfiable core [2021-02-19 19:51:08,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:08,239 INFO L446 ElimStorePlain]: Different costs {10=[f], 15=[f_inv]} [2021-02-19 19:51:08,276 INFO L354 Elim1Store]: treesize reduction 45, result has 44.4 percent of original size [2021-02-19 19:51:08,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 123 treesize of output 96 [2021-02-19 19:51:08,324 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:51:08,354 INFO L628 ElimStorePlain]: treesize reduction 11, result has 91.0 percent of original size [2021-02-19 19:51:08,374 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:08,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 111 treesize of output 96 [2021-02-19 19:51:08,395 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:08,396 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:08,397 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:51:08,397 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:123, output treesize:3 [2021-02-19 19:51:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:08,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:08,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 14 [2021-02-19 19:51:08,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061906804] [2021-02-19 19:51:08,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-19 19:51:08,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:08,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-19 19:51:08,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-02-19 19:51:08,407 INFO L87 Difference]: Start difference. First operand 2831 states and 7230 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 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) [2021-02-19 19:51:08,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:08,483 INFO L93 Difference]: Finished difference Result 3299 states and 8293 transitions. [2021-02-19 19:51:08,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-19 19:51:08,484 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 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 30 [2021-02-19 19:51:08,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:08,487 INFO L225 Difference]: With dead ends: 3299 [2021-02-19 19:51:08,487 INFO L226 Difference]: Without dead ends: 3281 [2021-02-19 19:51:08,487 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-02-19 19:51:08,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2021-02-19 19:51:08,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3017. [2021-02-19 19:51:08,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3017 states, 3016 states have (on average 2.570954907161804) internal successors, (7754), 3016 states have internal predecessors, (7754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:08,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3017 states to 3017 states and 7754 transitions. [2021-02-19 19:51:08,519 INFO L78 Accepts]: Start accepts. Automaton has 3017 states and 7754 transitions. Word has length 30 [2021-02-19 19:51:08,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:08,519 INFO L480 AbstractCegarLoop]: Abstraction has 3017 states and 7754 transitions. [2021-02-19 19:51:08,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 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) [2021-02-19 19:51:08,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3017 states and 7754 transitions. [2021-02-19 19:51:08,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-19 19:51:08,521 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:08,521 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:08,721 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:08,722 INFO L428 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:08,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:08,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1275160659, now seen corresponding path program 49 times [2021-02-19 19:51:08,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:08,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194011936] [2021-02-19 19:51:08,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:08,751 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:51:08,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194011936] [2021-02-19 19:51:08,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675091364] [2021-02-19 19:51:08,752 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 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 [2021-02-19 19:51:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:08,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 27 conjunts are in the unsatisfiable core [2021-02-19 19:51:08,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:08,854 INFO L354 Elim1Store]: treesize reduction 16, result has 70.9 percent of original size [2021-02-19 19:51:08,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 69 [2021-02-19 19:51:08,856 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:08,871 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:08,872 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:51:08,872 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:78, output treesize:96 [2021-02-19 19:51:09,127 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_28], 6=[f, v_prenex_27, v_prenex_26]} [2021-02-19 19:51:09,131 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-02-19 19:51:09,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 25 [2021-02-19 19:51:09,132 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:09,180 INFO L628 ElimStorePlain]: treesize reduction 57, result has 69.7 percent of original size [2021-02-19 19:51:09,205 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-02-19 19:51:09,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 49 [2021-02-19 19:51:09,206 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:09,222 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:09,233 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-02-19 19:51:09,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 28 [2021-02-19 19:51:09,235 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:09,248 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:09,259 INFO L354 Elim1Store]: treesize reduction 42, result has 14.3 percent of original size [2021-02-19 19:51:09,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 26 [2021-02-19 19:51:09,260 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:09,271 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:09,273 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:51:09,273 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:240, output treesize:3 [2021-02-19 19:51:09,283 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:09,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:09,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 14 [2021-02-19 19:51:09,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271204069] [2021-02-19 19:51:09,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-19 19:51:09,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:09,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-19 19:51:09,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-02-19 19:51:09,284 INFO L87 Difference]: Start difference. First operand 3017 states and 7754 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 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) [2021-02-19 19:51:09,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:09,432 INFO L93 Difference]: Finished difference Result 3711 states and 9322 transitions. [2021-02-19 19:51:09,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-19 19:51:09,432 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 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 30 [2021-02-19 19:51:09,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:09,436 INFO L225 Difference]: With dead ends: 3711 [2021-02-19 19:51:09,436 INFO L226 Difference]: Without dead ends: 3682 [2021-02-19 19:51:09,436 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-02-19 19:51:09,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3682 states. [2021-02-19 19:51:09,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3682 to 3254. [2021-02-19 19:51:09,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3254 states, 3253 states have (on average 2.5853058715032278) internal successors, (8410), 3253 states have internal predecessors, (8410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:09,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 8410 transitions. [2021-02-19 19:51:09,472 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 8410 transitions. Word has length 30 [2021-02-19 19:51:09,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:09,472 INFO L480 AbstractCegarLoop]: Abstraction has 3254 states and 8410 transitions. [2021-02-19 19:51:09,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 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) [2021-02-19 19:51:09,472 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 8410 transitions. [2021-02-19 19:51:09,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-19 19:51:09,475 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:09,475 INFO L506 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:09,676 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:09,676 INFO L428 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:09,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:09,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1889180589, now seen corresponding path program 50 times [2021-02-19 19:51:09,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:09,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609397938] [2021-02-19 19:51:09,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:09,703 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:51:09,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609397938] [2021-02-19 19:51:09,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518639958] [2021-02-19 19:51:09,704 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 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 [2021-02-19 19:51:09,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:51:09,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:09,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 27 conjunts are in the unsatisfiable core [2021-02-19 19:51:09,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:09,790 INFO L354 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2021-02-19 19:51:09,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 65 [2021-02-19 19:51:09,791 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:09,805 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:09,805 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:51:09,805 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:64, output treesize:92 [2021-02-19 19:51:10,153 INFO L354 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2021-02-19 19:51:10,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 33 [2021-02-19 19:51:10,155 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:10,197 INFO L628 ElimStorePlain]: treesize reduction 52, result has 72.9 percent of original size [2021-02-19 19:51:10,222 INFO L354 Elim1Store]: treesize reduction 24, result has 51.0 percent of original size [2021-02-19 19:51:10,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 52 [2021-02-19 19:51:10,223 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:10,229 INFO L628 ElimStorePlain]: treesize reduction 93, result has 3.1 percent of original size [2021-02-19 19:51:10,230 INFO L518 ElimStorePlain]: Eliminatee v_prenex_35 vanished before elimination [2021-02-19 19:51:10,230 INFO L518 ElimStorePlain]: Eliminatee v_prenex_37 vanished before elimination [2021-02-19 19:51:10,230 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:51:10,230 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 8 variables, input treesize:242, output treesize:3 [2021-02-19 19:51:10,241 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:51:10,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:10,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 14 [2021-02-19 19:51:10,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373682560] [2021-02-19 19:51:10,242 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-19 19:51:10,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:10,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-19 19:51:10,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-02-19 19:51:10,242 INFO L87 Difference]: Start difference. First operand 3254 states and 8410 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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) [2021-02-19 19:51:10,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:10,391 INFO L93 Difference]: Finished difference Result 3930 states and 9906 transitions. [2021-02-19 19:51:10,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-19 19:51:10,391 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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 30 [2021-02-19 19:51:10,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:10,395 INFO L225 Difference]: With dead ends: 3930 [2021-02-19 19:51:10,395 INFO L226 Difference]: Without dead ends: 3923 [2021-02-19 19:51:10,395 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-02-19 19:51:10,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3923 states. [2021-02-19 19:51:10,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3923 to 3481. [2021-02-19 19:51:10,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3481 states, 3480 states have (on average 2.5977011494252875) internal successors, (9040), 3480 states have internal predecessors, (9040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:10,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3481 states to 3481 states and 9040 transitions. [2021-02-19 19:51:10,432 INFO L78 Accepts]: Start accepts. Automaton has 3481 states and 9040 transitions. Word has length 30 [2021-02-19 19:51:10,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:10,433 INFO L480 AbstractCegarLoop]: Abstraction has 3481 states and 9040 transitions. [2021-02-19 19:51:10,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 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) [2021-02-19 19:51:10,433 INFO L276 IsEmpty]: Start isEmpty. Operand 3481 states and 9040 transitions. [2021-02-19 19:51:10,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:10,435 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:10,435 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:10,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2021-02-19 19:51:10,650 INFO L428 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:10,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:10,650 INFO L82 PathProgramCache]: Analyzing trace with hash 82612975, now seen corresponding path program 51 times [2021-02-19 19:51:10,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:10,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105220994] [2021-02-19 19:51:10,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:10,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:10,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105220994] [2021-02-19 19:51:10,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002012574] [2021-02-19 19:51:10,744 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 [2021-02-19 19:51:10,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-02-19 19:51:10,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:10,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 19:51:10,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:10,987 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:10,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:10,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2021-02-19 19:51:10,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866866728] [2021-02-19 19:51:10,988 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-19 19:51:10,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:10,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-19 19:51:10,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2021-02-19 19:51:10,988 INFO L87 Difference]: Start difference. First operand 3481 states and 9040 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:11,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:11,933 INFO L93 Difference]: Finished difference Result 4394 states and 10868 transitions. [2021-02-19 19:51:11,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-02-19 19:51:11,934 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-02-19 19:51:11,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:11,938 INFO L225 Difference]: With dead ends: 4394 [2021-02-19 19:51:11,938 INFO L226 Difference]: Without dead ends: 4394 [2021-02-19 19:51:11,938 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1271 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1299, Invalid=3671, Unknown=0, NotChecked=0, Total=4970 [2021-02-19 19:51:11,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4394 states. [2021-02-19 19:51:11,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4394 to 3164. [2021-02-19 19:51:11,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3164 states, 3163 states have (on average 2.5861523869743914) internal successors, (8180), 3163 states have internal predecessors, (8180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:11,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3164 states to 3164 states and 8180 transitions. [2021-02-19 19:51:11,991 INFO L78 Accepts]: Start accepts. Automaton has 3164 states and 8180 transitions. Word has length 32 [2021-02-19 19:51:11,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:11,991 INFO L480 AbstractCegarLoop]: Abstraction has 3164 states and 8180 transitions. [2021-02-19 19:51:11,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 25 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:11,991 INFO L276 IsEmpty]: Start isEmpty. Operand 3164 states and 8180 transitions. [2021-02-19 19:51:11,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:11,993 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:11,994 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:12,194 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2021-02-19 19:51:12,194 INFO L428 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:12,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:12,194 INFO L82 PathProgramCache]: Analyzing trace with hash -636122069, now seen corresponding path program 52 times [2021-02-19 19:51:12,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:12,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597607032] [2021-02-19 19:51:12,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:12,269 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:12,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597607032] [2021-02-19 19:51:12,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686680932] [2021-02-19 19:51:12,269 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 [2021-02-19 19:51:12,287 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:51:12,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:12,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 19:51:12,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:12,465 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:12,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:12,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-02-19 19:51:12,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839073859] [2021-02-19 19:51:12,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-19 19:51:12,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:12,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-19 19:51:12,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2021-02-19 19:51:12,466 INFO L87 Difference]: Start difference. First operand 3164 states and 8180 transitions. Second operand has 25 states, 25 states have (on average 2.24) 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) [2021-02-19 19:51:13,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:13,871 INFO L93 Difference]: Finished difference Result 5243 states and 12644 transitions. [2021-02-19 19:51:13,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-02-19 19:51:13,871 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.24) 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 32 [2021-02-19 19:51:13,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:13,875 INFO L225 Difference]: With dead ends: 5243 [2021-02-19 19:51:13,875 INFO L226 Difference]: Without dead ends: 5139 [2021-02-19 19:51:13,876 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2425 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1756, Invalid=6076, Unknown=0, NotChecked=0, Total=7832 [2021-02-19 19:51:13,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5139 states. [2021-02-19 19:51:13,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5139 to 3339. [2021-02-19 19:51:13,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3339 states, 3338 states have (on average 2.5820850808867584) internal successors, (8619), 3338 states have internal predecessors, (8619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:13,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3339 states to 3339 states and 8619 transitions. [2021-02-19 19:51:13,919 INFO L78 Accepts]: Start accepts. Automaton has 3339 states and 8619 transitions. Word has length 32 [2021-02-19 19:51:13,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:13,919 INFO L480 AbstractCegarLoop]: Abstraction has 3339 states and 8619 transitions. [2021-02-19 19:51:13,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.24) 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) [2021-02-19 19:51:13,919 INFO L276 IsEmpty]: Start isEmpty. Operand 3339 states and 8619 transitions. [2021-02-19 19:51:13,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:13,921 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:13,921 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:14,130 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable217 [2021-02-19 19:51:14,131 INFO L428 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:14,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:14,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1093702969, now seen corresponding path program 53 times [2021-02-19 19:51:14,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:14,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841189281] [2021-02-19 19:51:14,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:14,179 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:14,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841189281] [2021-02-19 19:51:14,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630663644] [2021-02-19 19:51:14,179 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 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-02-19 19:51:14,213 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-02-19 19:51:14,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:14,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:14,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:14,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:14,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 20 [2021-02-19 19:51:14,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366782280] [2021-02-19 19:51:14,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-19 19:51:14,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:14,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-19 19:51:14,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-02-19 19:51:14,392 INFO L87 Difference]: Start difference. First operand 3339 states and 8619 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:15,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:15,576 INFO L93 Difference]: Finished difference Result 6359 states and 15875 transitions. [2021-02-19 19:51:15,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-02-19 19:51:15,577 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-02-19 19:51:15,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:15,582 INFO L225 Difference]: With dead ends: 6359 [2021-02-19 19:51:15,582 INFO L226 Difference]: Without dead ends: 6347 [2021-02-19 19:51:15,582 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1905 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1604, Invalid=4248, Unknown=0, NotChecked=0, Total=5852 [2021-02-19 19:51:15,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6347 states. [2021-02-19 19:51:15,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6347 to 4305. [2021-02-19 19:51:15,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4305 states, 4304 states have (on average 2.5820167286245352) internal successors, (11113), 4304 states have internal predecessors, (11113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:15,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4305 states to 4305 states and 11113 transitions. [2021-02-19 19:51:15,633 INFO L78 Accepts]: Start accepts. Automaton has 4305 states and 11113 transitions. Word has length 32 [2021-02-19 19:51:15,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:15,633 INFO L480 AbstractCegarLoop]: Abstraction has 4305 states and 11113 transitions. [2021-02-19 19:51:15,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:15,633 INFO L276 IsEmpty]: Start isEmpty. Operand 4305 states and 11113 transitions. [2021-02-19 19:51:15,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:15,636 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:15,636 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:15,837 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable218 [2021-02-19 19:51:15,837 INFO L428 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:15,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:15,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1817366245, now seen corresponding path program 54 times [2021-02-19 19:51:15,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:15,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498495257] [2021-02-19 19:51:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:15,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498495257] [2021-02-19 19:51:15,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999999835] [2021-02-19 19:51:15,889 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 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 [2021-02-19 19:51:15,909 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-02-19 19:51:15,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:15,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 19:51:15,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:16,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:16,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 20 [2021-02-19 19:51:16,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986924583] [2021-02-19 19:51:16,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-19 19:51:16,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:16,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-19 19:51:16,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2021-02-19 19:51:16,079 INFO L87 Difference]: Start difference. First operand 4305 states and 11113 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:16,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:16,946 INFO L93 Difference]: Finished difference Result 4664 states and 11802 transitions. [2021-02-19 19:51:16,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-02-19 19:51:16,946 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-02-19 19:51:16,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:16,951 INFO L225 Difference]: With dead ends: 4664 [2021-02-19 19:51:16,951 INFO L226 Difference]: Without dead ends: 4660 [2021-02-19 19:51:16,951 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1283 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1088, Invalid=3334, Unknown=0, NotChecked=0, Total=4422 [2021-02-19 19:51:16,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4660 states. [2021-02-19 19:51:16,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4660 to 4305. [2021-02-19 19:51:16,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4305 states, 4304 states have (on average 2.5810873605947955) internal successors, (11109), 4304 states have internal predecessors, (11109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:16,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4305 states to 4305 states and 11109 transitions. [2021-02-19 19:51:16,993 INFO L78 Accepts]: Start accepts. Automaton has 4305 states and 11109 transitions. Word has length 32 [2021-02-19 19:51:16,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:16,993 INFO L480 AbstractCegarLoop]: Abstraction has 4305 states and 11109 transitions. [2021-02-19 19:51:16,993 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:16,993 INFO L276 IsEmpty]: Start isEmpty. Operand 4305 states and 11109 transitions. [2021-02-19 19:51:16,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:16,996 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:16,996 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:17,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:17,197 INFO L428 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:17,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:17,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1061972011, now seen corresponding path program 55 times [2021-02-19 19:51:17,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:17,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445330510] [2021-02-19 19:51:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:17,241 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 27 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:17,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445330510] [2021-02-19 19:51:17,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304188683] [2021-02-19 19:51:17,242 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 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-02-19 19:51:17,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:17,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 19:51:17,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:17,444 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:17,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:17,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 20 [2021-02-19 19:51:17,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300852809] [2021-02-19 19:51:17,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-19 19:51:17,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:17,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-19 19:51:17,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2021-02-19 19:51:17,445 INFO L87 Difference]: Start difference. First operand 4305 states and 11109 transitions. Second operand has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 20 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) [2021-02-19 19:51:18,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:18,138 INFO L93 Difference]: Finished difference Result 5836 states and 14714 transitions. [2021-02-19 19:51:18,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-02-19 19:51:18,138 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 20 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 32 [2021-02-19 19:51:18,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:18,143 INFO L225 Difference]: With dead ends: 5836 [2021-02-19 19:51:18,143 INFO L226 Difference]: Without dead ends: 5818 [2021-02-19 19:51:18,144 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=721, Invalid=2249, Unknown=0, NotChecked=0, Total=2970 [2021-02-19 19:51:18,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5818 states. [2021-02-19 19:51:18,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5818 to 4428. [2021-02-19 19:51:18,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4428 states, 4427 states have (on average 2.5897899254574206) internal successors, (11465), 4427 states have internal predecessors, (11465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:18,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4428 states to 4428 states and 11465 transitions. [2021-02-19 19:51:18,198 INFO L78 Accepts]: Start accepts. Automaton has 4428 states and 11465 transitions. Word has length 32 [2021-02-19 19:51:18,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:18,198 INFO L480 AbstractCegarLoop]: Abstraction has 4428 states and 11465 transitions. [2021-02-19 19:51:18,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 20 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) [2021-02-19 19:51:18,198 INFO L276 IsEmpty]: Start isEmpty. Operand 4428 states and 11465 transitions. [2021-02-19 19:51:18,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:18,202 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:18,202 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:18,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:18,415 INFO L428 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:18,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:18,416 INFO L82 PathProgramCache]: Analyzing trace with hash -2093200197, now seen corresponding path program 56 times [2021-02-19 19:51:18,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:18,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227749181] [2021-02-19 19:51:18,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:18,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227749181] [2021-02-19 19:51:18,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388545496] [2021-02-19 19:51:18,468 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 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-02-19 19:51:18,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:51:18,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:18,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 19:51:18,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:18,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:18,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2021-02-19 19:51:18,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303721438] [2021-02-19 19:51:18,684 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-19 19:51:18,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:18,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-19 19:51:18,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-02-19 19:51:18,684 INFO L87 Difference]: Start difference. First operand 4428 states and 11465 transitions. Second operand has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:19,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:19,590 INFO L93 Difference]: Finished difference Result 5254 states and 13180 transitions. [2021-02-19 19:51:19,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-02-19 19:51:19,591 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-02-19 19:51:19,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:19,596 INFO L225 Difference]: With dead ends: 5254 [2021-02-19 19:51:19,596 INFO L226 Difference]: Without dead ends: 5238 [2021-02-19 19:51:19,597 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1414 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1130, Invalid=3562, Unknown=0, NotChecked=0, Total=4692 [2021-02-19 19:51:19,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5238 states. [2021-02-19 19:51:19,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5238 to 4516. [2021-02-19 19:51:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4516 states, 4515 states have (on average 2.5918050941306756) internal successors, (11702), 4515 states have internal predecessors, (11702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:19,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4516 states to 4516 states and 11702 transitions. [2021-02-19 19:51:19,658 INFO L78 Accepts]: Start accepts. Automaton has 4516 states and 11702 transitions. Word has length 32 [2021-02-19 19:51:19,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:19,658 INFO L480 AbstractCegarLoop]: Abstraction has 4516 states and 11702 transitions. [2021-02-19 19:51:19,658 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:19,658 INFO L276 IsEmpty]: Start isEmpty. Operand 4516 states and 11702 transitions. [2021-02-19 19:51:19,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:19,661 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:19,661 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:19,861 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2021-02-19 19:51:19,862 INFO L428 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:19,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:19,862 INFO L82 PathProgramCache]: Analyzing trace with hash -243388105, now seen corresponding path program 57 times [2021-02-19 19:51:19,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:19,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661146930] [2021-02-19 19:51:19,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:19,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661146930] [2021-02-19 19:51:19,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956593354] [2021-02-19 19:51:19,930 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 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 [2021-02-19 19:51:19,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-02-19 19:51:19,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:19,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 19:51:19,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:20,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:20,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2021-02-19 19:51:20,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246411741] [2021-02-19 19:51:20,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 19:51:20,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:20,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 19:51:20,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:51:20,148 INFO L87 Difference]: Start difference. First operand 4516 states and 11702 transitions. Second operand has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:21,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:21,113 INFO L93 Difference]: Finished difference Result 5594 states and 13918 transitions. [2021-02-19 19:51:21,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-02-19 19:51:21,113 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-02-19 19:51:21,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:21,119 INFO L225 Difference]: With dead ends: 5594 [2021-02-19 19:51:21,119 INFO L226 Difference]: Without dead ends: 5566 [2021-02-19 19:51:21,120 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1574 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1183, Invalid=3787, Unknown=0, NotChecked=0, Total=4970 [2021-02-19 19:51:21,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5566 states. [2021-02-19 19:51:21,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5566 to 4347. [2021-02-19 19:51:21,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 4346 states have (on average 2.588587206626783) internal successors, (11250), 4346 states have internal predecessors, (11250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:21,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 11250 transitions. [2021-02-19 19:51:21,175 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 11250 transitions. Word has length 32 [2021-02-19 19:51:21,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:21,176 INFO L480 AbstractCegarLoop]: Abstraction has 4347 states and 11250 transitions. [2021-02-19 19:51:21,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:21,176 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 11250 transitions. [2021-02-19 19:51:21,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:21,179 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:21,179 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:21,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:21,380 INFO L428 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:21,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:21,380 INFO L82 PathProgramCache]: Analyzing trace with hash -690428237, now seen corresponding path program 58 times [2021-02-19 19:51:21,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:21,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898730561] [2021-02-19 19:51:21,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:21,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898730561] [2021-02-19 19:51:21,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500902659] [2021-02-19 19:51:21,446 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 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 [2021-02-19 19:51:21,466 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:51:21,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:21,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 19:51:21,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:21,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:21,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-02-19 19:51:21,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859965031] [2021-02-19 19:51:21,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-19 19:51:21,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:21,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-19 19:51:21,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2021-02-19 19:51:21,649 INFO L87 Difference]: Start difference. First operand 4347 states and 11250 transitions. Second operand has 24 states, 24 states have (on average 2.25) internal successors, (54), 23 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:22,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:22,620 INFO L93 Difference]: Finished difference Result 5720 states and 14080 transitions. [2021-02-19 19:51:22,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-02-19 19:51:22,621 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 23 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-02-19 19:51:22,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:22,625 INFO L225 Difference]: With dead ends: 5720 [2021-02-19 19:51:22,625 INFO L226 Difference]: Without dead ends: 5686 [2021-02-19 19:51:22,626 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1246, Invalid=4010, Unknown=0, NotChecked=0, Total=5256 [2021-02-19 19:51:22,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5686 states. [2021-02-19 19:51:22,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5686 to 3872. [2021-02-19 19:51:22,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3872 states, 3871 states have (on average 2.579178506845776) internal successors, (9984), 3871 states have internal predecessors, (9984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:22,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3872 states to 3872 states and 9984 transitions. [2021-02-19 19:51:22,675 INFO L78 Accepts]: Start accepts. Automaton has 3872 states and 9984 transitions. Word has length 32 [2021-02-19 19:51:22,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:22,675 INFO L480 AbstractCegarLoop]: Abstraction has 3872 states and 9984 transitions. [2021-02-19 19:51:22,675 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 23 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:22,675 INFO L276 IsEmpty]: Start isEmpty. Operand 3872 states and 9984 transitions. [2021-02-19 19:51:22,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:22,678 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:22,678 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:22,881 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2021-02-19 19:51:22,881 INFO L428 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:22,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:22,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1158180335, now seen corresponding path program 59 times [2021-02-19 19:51:22,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:22,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54980506] [2021-02-19 19:51:22,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:22,954 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:22,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54980506] [2021-02-19 19:51:22,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014328523] [2021-02-19 19:51:22,954 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 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-02-19 19:51:22,985 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-02-19 19:51:22,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:22,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 19:51:22,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:23,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:23,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-02-19 19:51:23,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073941130] [2021-02-19 19:51:23,159 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-19 19:51:23,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:23,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-19 19:51:23,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2021-02-19 19:51:23,159 INFO L87 Difference]: Start difference. First operand 3872 states and 9984 transitions. Second operand has 25 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:24,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:24,167 INFO L93 Difference]: Finished difference Result 5197 states and 12616 transitions. [2021-02-19 19:51:24,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-02-19 19:51:24,167 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-02-19 19:51:24,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:24,171 INFO L225 Difference]: With dead ends: 5197 [2021-02-19 19:51:24,171 INFO L226 Difference]: Without dead ends: 5197 [2021-02-19 19:51:24,172 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1262, Invalid=3708, Unknown=0, NotChecked=0, Total=4970 [2021-02-19 19:51:24,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5197 states. [2021-02-19 19:51:24,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5197 to 3402. [2021-02-19 19:51:24,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3402 states, 3401 states have (on average 2.5633637165539547) internal successors, (8718), 3401 states have internal predecessors, (8718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:24,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3402 states to 3402 states and 8718 transitions. [2021-02-19 19:51:24,206 INFO L78 Accepts]: Start accepts. Automaton has 3402 states and 8718 transitions. Word has length 32 [2021-02-19 19:51:24,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:24,206 INFO L480 AbstractCegarLoop]: Abstraction has 3402 states and 8718 transitions. [2021-02-19 19:51:24,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:24,206 INFO L276 IsEmpty]: Start isEmpty. Operand 3402 states and 8718 transitions. [2021-02-19 19:51:24,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:24,208 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:24,208 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:24,409 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2021-02-19 19:51:24,409 INFO L428 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:24,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:24,409 INFO L82 PathProgramCache]: Analyzing trace with hash -178878933, now seen corresponding path program 60 times [2021-02-19 19:51:24,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:24,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892903474] [2021-02-19 19:51:24,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:24,481 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:24,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892903474] [2021-02-19 19:51:24,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709070595] [2021-02-19 19:51:24,481 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 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 [2021-02-19 19:51:24,501 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-02-19 19:51:24,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:24,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 19:51:24,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:24,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:24,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-02-19 19:51:24,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142723204] [2021-02-19 19:51:24,678 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-19 19:51:24,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:24,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-19 19:51:24,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2021-02-19 19:51:24,679 INFO L87 Difference]: Start difference. First operand 3402 states and 8718 transitions. Second operand has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:25,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:25,723 INFO L93 Difference]: Finished difference Result 4252 states and 10318 transitions. [2021-02-19 19:51:25,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-02-19 19:51:25,723 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-02-19 19:51:25,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:25,726 INFO L225 Difference]: With dead ends: 4252 [2021-02-19 19:51:25,726 INFO L226 Difference]: Without dead ends: 4186 [2021-02-19 19:51:25,727 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1720 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1147, Invalid=4109, Unknown=0, NotChecked=0, Total=5256 [2021-02-19 19:51:25,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4186 states. [2021-02-19 19:51:25,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4186 to 3264. [2021-02-19 19:51:25,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3264 states, 3263 states have (on average 2.5485749310450507) internal successors, (8316), 3263 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:25,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3264 states to 3264 states and 8316 transitions. [2021-02-19 19:51:25,761 INFO L78 Accepts]: Start accepts. Automaton has 3264 states and 8316 transitions. Word has length 32 [2021-02-19 19:51:25,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:25,762 INFO L480 AbstractCegarLoop]: Abstraction has 3264 states and 8316 transitions. [2021-02-19 19:51:25,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.2916666666666665) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:25,762 INFO L276 IsEmpty]: Start isEmpty. Operand 3264 states and 8316 transitions. [2021-02-19 19:51:25,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:25,763 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:25,763 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:25,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable225 [2021-02-19 19:51:25,966 INFO L428 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:25,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:25,966 INFO L82 PathProgramCache]: Analyzing trace with hash 6228207, now seen corresponding path program 61 times [2021-02-19 19:51:25,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:25,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802560907] [2021-02-19 19:51:25,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:26,037 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:26,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802560907] [2021-02-19 19:51:26,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561758155] [2021-02-19 19:51:26,037 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 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 [2021-02-19 19:51:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:26,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 19:51:26,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:26,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:26,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-02-19 19:51:26,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423918656] [2021-02-19 19:51:26,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-19 19:51:26,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:26,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-19 19:51:26,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2021-02-19 19:51:26,230 INFO L87 Difference]: Start difference. First operand 3264 states and 8316 transitions. Second operand has 24 states, 24 states have (on average 2.375) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:27,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:27,348 INFO L93 Difference]: Finished difference Result 4881 states and 11710 transitions. [2021-02-19 19:51:27,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-02-19 19:51:27,349 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-02-19 19:51:27,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:27,352 INFO L225 Difference]: With dead ends: 4881 [2021-02-19 19:51:27,352 INFO L226 Difference]: Without dead ends: 4881 [2021-02-19 19:51:27,353 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1700 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1473, Invalid=4077, Unknown=0, NotChecked=0, Total=5550 [2021-02-19 19:51:27,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4881 states. [2021-02-19 19:51:27,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4881 to 2860. [2021-02-19 19:51:27,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2860 states, 2859 states have (on average 2.5183630640083945) internal successors, (7200), 2859 states have internal predecessors, (7200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:27,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 7200 transitions. [2021-02-19 19:51:27,384 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 7200 transitions. Word has length 32 [2021-02-19 19:51:27,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:27,384 INFO L480 AbstractCegarLoop]: Abstraction has 2860 states and 7200 transitions. [2021-02-19 19:51:27,384 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.375) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:27,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 7200 transitions. [2021-02-19 19:51:27,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:27,386 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:27,386 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:27,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:27,586 INFO L428 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:27,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:27,586 INFO L82 PathProgramCache]: Analyzing trace with hash 9306155, now seen corresponding path program 62 times [2021-02-19 19:51:27,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:27,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842032371] [2021-02-19 19:51:27,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:27,649 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:27,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842032371] [2021-02-19 19:51:27,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391192500] [2021-02-19 19:51:27,650 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 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 [2021-02-19 19:51:27,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:51:27,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:27,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 19:51:27,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:27,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:27,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2021-02-19 19:51:27,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075387265] [2021-02-19 19:51:27,872 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 19:51:27,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:27,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 19:51:27,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:51:27,872 INFO L87 Difference]: Start difference. First operand 2860 states and 7200 transitions. Second operand has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 22 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:28,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:28,815 INFO L93 Difference]: Finished difference Result 3661 states and 8825 transitions. [2021-02-19 19:51:28,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-02-19 19:51:28,815 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 22 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-02-19 19:51:28,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:28,818 INFO L225 Difference]: With dead ends: 3661 [2021-02-19 19:51:28,818 INFO L226 Difference]: Without dead ends: 3622 [2021-02-19 19:51:28,819 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1460 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=968, Invalid=3454, Unknown=0, NotChecked=0, Total=4422 [2021-02-19 19:51:28,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2021-02-19 19:51:28,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 2809. [2021-02-19 19:51:28,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2809 states, 2808 states have (on average 2.508190883190883) internal successors, (7043), 2808 states have internal predecessors, (7043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:28,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 7043 transitions. [2021-02-19 19:51:28,848 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 7043 transitions. Word has length 32 [2021-02-19 19:51:28,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:28,848 INFO L480 AbstractCegarLoop]: Abstraction has 2809 states and 7043 transitions. [2021-02-19 19:51:28,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.391304347826087) internal successors, (55), 22 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:28,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 7043 transitions. [2021-02-19 19:51:28,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:28,850 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:28,850 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:29,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable227 [2021-02-19 19:51:29,050 INFO L428 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:29,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:29,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1184916463, now seen corresponding path program 63 times [2021-02-19 19:51:29,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:29,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142528601] [2021-02-19 19:51:29,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:29,113 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 27 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:29,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142528601] [2021-02-19 19:51:29,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126224687] [2021-02-19 19:51:29,113 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 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 [2021-02-19 19:51:29,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-02-19 19:51:29,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:29,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 19:51:29,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:29,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:29,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2021-02-19 19:51:29,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308104017] [2021-02-19 19:51:29,313 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 19:51:29,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:29,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 19:51:29,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:51:29,314 INFO L87 Difference]: Start difference. First operand 2809 states and 7043 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:30,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:30,496 INFO L93 Difference]: Finished difference Result 4911 states and 11694 transitions. [2021-02-19 19:51:30,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-02-19 19:51:30,497 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-02-19 19:51:30,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:30,501 INFO L225 Difference]: With dead ends: 4911 [2021-02-19 19:51:30,501 INFO L226 Difference]: Without dead ends: 4911 [2021-02-19 19:51:30,502 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2155 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1768, Invalid=4552, Unknown=0, NotChecked=0, Total=6320 [2021-02-19 19:51:30,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4911 states. [2021-02-19 19:51:30,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4911 to 3307. [2021-02-19 19:51:30,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3307 states, 3306 states have (on average 2.481246218995765) internal successors, (8203), 3306 states have internal predecessors, (8203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:30,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 8203 transitions. [2021-02-19 19:51:30,538 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 8203 transitions. Word has length 32 [2021-02-19 19:51:30,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:30,538 INFO L480 AbstractCegarLoop]: Abstraction has 3307 states and 8203 transitions. [2021-02-19 19:51:30,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 22 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:30,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 8203 transitions. [2021-02-19 19:51:30,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:30,540 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:30,540 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:30,740 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:30,740 INFO L428 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:30,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:30,740 INFO L82 PathProgramCache]: Analyzing trace with hash -2024015317, now seen corresponding path program 64 times [2021-02-19 19:51:30,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:30,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006840473] [2021-02-19 19:51:30,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:30,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006840473] [2021-02-19 19:51:30,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158493251] [2021-02-19 19:51:30,809 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 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-02-19 19:51:30,831 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:51:30,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:30,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 19:51:30,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:31,008 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:31,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:31,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2021-02-19 19:51:31,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744530328] [2021-02-19 19:51:31,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-19 19:51:31,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:31,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-19 19:51:31,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-02-19 19:51:31,009 INFO L87 Difference]: Start difference. First operand 3307 states and 8203 transitions. Second operand has 22 states, 22 states have (on average 2.5) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:31,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:31,842 INFO L93 Difference]: Finished difference Result 3840 states and 9263 transitions. [2021-02-19 19:51:31,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-02-19 19:51:31,843 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-02-19 19:51:31,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:31,847 INFO L225 Difference]: With dead ends: 3840 [2021-02-19 19:51:31,847 INFO L226 Difference]: Without dead ends: 3822 [2021-02-19 19:51:31,847 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=879, Invalid=3027, Unknown=0, NotChecked=0, Total=3906 [2021-02-19 19:51:31,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3822 states. [2021-02-19 19:51:31,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3822 to 3381. [2021-02-19 19:51:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3381 states, 3380 states have (on average 2.486094674556213) internal successors, (8403), 3380 states have internal predecessors, (8403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:31,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3381 states to 3381 states and 8403 transitions. [2021-02-19 19:51:31,883 INFO L78 Accepts]: Start accepts. Automaton has 3381 states and 8403 transitions. Word has length 32 [2021-02-19 19:51:31,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:31,883 INFO L480 AbstractCegarLoop]: Abstraction has 3381 states and 8403 transitions. [2021-02-19 19:51:31,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.5) internal successors, (55), 21 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:31,883 INFO L276 IsEmpty]: Start isEmpty. Operand 3381 states and 8403 transitions. [2021-02-19 19:51:31,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:31,885 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:31,885 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:32,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:32,096 INFO L428 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:32,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:32,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1400667887, now seen corresponding path program 65 times [2021-02-19 19:51:32,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:32,096 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011823413] [2021-02-19 19:51:32,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:32,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:32,166 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:32,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011823413] [2021-02-19 19:51:32,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234988444] [2021-02-19 19:51:32,167 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 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 [2021-02-19 19:51:32,196 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-02-19 19:51:32,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:32,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 19:51:32,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:32,379 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:32,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:32,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2021-02-19 19:51:32,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736467357] [2021-02-19 19:51:32,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-19 19:51:32,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:32,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-19 19:51:32,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-02-19 19:51:32,380 INFO L87 Difference]: Start difference. First operand 3381 states and 8403 transitions. Second operand has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 21 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:33,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:33,632 INFO L93 Difference]: Finished difference Result 6180 states and 15068 transitions. [2021-02-19 19:51:33,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-02-19 19:51:33,632 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 21 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-02-19 19:51:33,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:33,637 INFO L225 Difference]: With dead ends: 6180 [2021-02-19 19:51:33,637 INFO L226 Difference]: Without dead ends: 6180 [2021-02-19 19:51:33,638 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2540 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2010, Invalid=4962, Unknown=0, NotChecked=0, Total=6972 [2021-02-19 19:51:33,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6180 states. [2021-02-19 19:51:33,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6180 to 5144. [2021-02-19 19:51:33,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5144 states, 5143 states have (on average 2.52109663620455) internal successors, (12966), 5143 states have internal predecessors, (12966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:33,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5144 states to 5144 states and 12966 transitions. [2021-02-19 19:51:33,695 INFO L78 Accepts]: Start accepts. Automaton has 5144 states and 12966 transitions. Word has length 32 [2021-02-19 19:51:33,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:33,695 INFO L480 AbstractCegarLoop]: Abstraction has 5144 states and 12966 transitions. [2021-02-19 19:51:33,695 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 21 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:33,695 INFO L276 IsEmpty]: Start isEmpty. Operand 5144 states and 12966 transitions. [2021-02-19 19:51:33,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:33,698 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:33,698 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:33,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable230 [2021-02-19 19:51:33,898 INFO L428 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:33,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:33,898 INFO L82 PathProgramCache]: Analyzing trace with hash -545352747, now seen corresponding path program 66 times [2021-02-19 19:51:33,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:33,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148088395] [2021-02-19 19:51:33,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:33,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148088395] [2021-02-19 19:51:33,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768708687] [2021-02-19 19:51:33,950 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 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 [2021-02-19 19:51:33,970 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-02-19 19:51:33,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:33,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 19:51:33,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:34,141 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:34,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:34,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 20 [2021-02-19 19:51:34,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195299166] [2021-02-19 19:51:34,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-02-19 19:51:34,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:34,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-02-19 19:51:34,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2021-02-19 19:51:34,142 INFO L87 Difference]: Start difference. First operand 5144 states and 12966 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:34,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:34,975 INFO L93 Difference]: Finished difference Result 6009 states and 14677 transitions. [2021-02-19 19:51:34,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-02-19 19:51:34,975 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-02-19 19:51:34,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:34,981 INFO L225 Difference]: With dead ends: 6009 [2021-02-19 19:51:34,981 INFO L226 Difference]: Without dead ends: 6005 [2021-02-19 19:51:34,981 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1087, Invalid=2819, Unknown=0, NotChecked=0, Total=3906 [2021-02-19 19:51:34,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6005 states. [2021-02-19 19:51:35,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6005 to 5062. [2021-02-19 19:51:35,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5062 states, 5061 states have (on average 2.517091483896463) internal successors, (12739), 5061 states have internal predecessors, (12739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:35,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5062 states to 5062 states and 12739 transitions. [2021-02-19 19:51:35,038 INFO L78 Accepts]: Start accepts. Automaton has 5062 states and 12739 transitions. Word has length 32 [2021-02-19 19:51:35,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:35,038 INFO L480 AbstractCegarLoop]: Abstraction has 5062 states and 12739 transitions. [2021-02-19 19:51:35,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:35,038 INFO L276 IsEmpty]: Start isEmpty. Operand 5062 states and 12739 transitions. [2021-02-19 19:51:35,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:35,041 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:35,041 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:35,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:35,246 INFO L428 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:35,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:35,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1051699013, now seen corresponding path program 67 times [2021-02-19 19:51:35,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:35,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425623492] [2021-02-19 19:51:35,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 23 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:35,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425623492] [2021-02-19 19:51:35,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129006888] [2021-02-19 19:51:35,299 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 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-02-19 19:51:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:35,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 19:51:35,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:35,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:35,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2021-02-19 19:51:35,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676591500] [2021-02-19 19:51:35,500 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-02-19 19:51:35,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:35,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-02-19 19:51:35,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-02-19 19:51:35,500 INFO L87 Difference]: Start difference. First operand 5062 states and 12739 transitions. Second operand has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:36,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:36,299 INFO L93 Difference]: Finished difference Result 6244 states and 15277 transitions. [2021-02-19 19:51:36,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-02-19 19:51:36,300 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-02-19 19:51:36,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:36,305 INFO L225 Difference]: With dead ends: 6244 [2021-02-19 19:51:36,305 INFO L226 Difference]: Without dead ends: 6232 [2021-02-19 19:51:36,306 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1011, Invalid=2895, Unknown=0, NotChecked=0, Total=3906 [2021-02-19 19:51:36,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6232 states. [2021-02-19 19:51:36,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6232 to 5108. [2021-02-19 19:51:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5108 states, 5107 states have (on average 2.522811826904249) internal successors, (12884), 5107 states have internal predecessors, (12884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:36,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5108 states to 5108 states and 12884 transitions. [2021-02-19 19:51:36,363 INFO L78 Accepts]: Start accepts. Automaton has 5108 states and 12884 transitions. Word has length 32 [2021-02-19 19:51:36,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:36,363 INFO L480 AbstractCegarLoop]: Abstraction has 5108 states and 12884 transitions. [2021-02-19 19:51:36,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 21 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:36,364 INFO L276 IsEmpty]: Start isEmpty. Operand 5108 states and 12884 transitions. [2021-02-19 19:51:36,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:36,366 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:36,366 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:36,567 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:36,567 INFO L428 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:36,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:36,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1278920393, now seen corresponding path program 68 times [2021-02-19 19:51:36,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:36,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346342373] [2021-02-19 19:51:36,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:36,632 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:36,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346342373] [2021-02-19 19:51:36,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188903474] [2021-02-19 19:51:36,632 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 [2021-02-19 19:51:36,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:51:36,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:36,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 19:51:36,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:36,827 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:36,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:36,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2021-02-19 19:51:36,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356743955] [2021-02-19 19:51:36,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 19:51:36,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:36,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 19:51:36,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:51:36,827 INFO L87 Difference]: Start difference. First operand 5108 states and 12884 transitions. Second operand has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:37,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:37,674 INFO L93 Difference]: Finished difference Result 6722 states and 16413 transitions. [2021-02-19 19:51:37,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-02-19 19:51:37,675 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-02-19 19:51:37,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:37,680 INFO L225 Difference]: With dead ends: 6722 [2021-02-19 19:51:37,680 INFO L226 Difference]: Without dead ends: 6702 [2021-02-19 19:51:37,681 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1272 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1025, Invalid=3135, Unknown=0, NotChecked=0, Total=4160 [2021-02-19 19:51:37,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6702 states. [2021-02-19 19:51:37,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6702 to 5738. [2021-02-19 19:51:37,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5738 states, 5737 states have (on average 2.5281506013595956) internal successors, (14504), 5737 states have internal predecessors, (14504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:37,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5738 states to 5738 states and 14504 transitions. [2021-02-19 19:51:37,750 INFO L78 Accepts]: Start accepts. Automaton has 5738 states and 14504 transitions. Word has length 32 [2021-02-19 19:51:37,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:37,750 INFO L480 AbstractCegarLoop]: Abstraction has 5738 states and 14504 transitions. [2021-02-19 19:51:37,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:37,750 INFO L276 IsEmpty]: Start isEmpty. Operand 5738 states and 14504 transitions. [2021-02-19 19:51:37,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:37,753 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:37,753 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:37,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2021-02-19 19:51:37,954 INFO L428 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:37,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:37,954 INFO L82 PathProgramCache]: Analyzing trace with hash -595334477, now seen corresponding path program 69 times [2021-02-19 19:51:37,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:37,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147102397] [2021-02-19 19:51:37,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:38,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147102397] [2021-02-19 19:51:38,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828495614] [2021-02-19 19:51:38,024 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 [2021-02-19 19:51:38,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-02-19 19:51:38,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:38,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 19:51:38,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:38,224 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:38,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:38,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2021-02-19 19:51:38,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585509448] [2021-02-19 19:51:38,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-19 19:51:38,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:38,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-19 19:51:38,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-02-19 19:51:38,225 INFO L87 Difference]: Start difference. First operand 5738 states and 14504 transitions. Second operand has 24 states, 24 states have (on average 2.25) internal successors, (54), 23 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:39,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:39,186 INFO L93 Difference]: Finished difference Result 7634 states and 18636 transitions. [2021-02-19 19:51:39,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-02-19 19:51:39,186 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 23 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-02-19 19:51:39,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:39,193 INFO L225 Difference]: With dead ends: 7634 [2021-02-19 19:51:39,193 INFO L226 Difference]: Without dead ends: 7606 [2021-02-19 19:51:39,194 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1454 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1128, Invalid=3564, Unknown=0, NotChecked=0, Total=4692 [2021-02-19 19:51:39,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7606 states. [2021-02-19 19:51:39,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7606 to 6549. [2021-02-19 19:51:39,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6549 states, 6548 states have (on average 2.5284056200366525) internal successors, (16556), 6548 states have internal predecessors, (16556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:39,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6549 states to 6549 states and 16556 transitions. [2021-02-19 19:51:39,278 INFO L78 Accepts]: Start accepts. Automaton has 6549 states and 16556 transitions. Word has length 32 [2021-02-19 19:51:39,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:39,279 INFO L480 AbstractCegarLoop]: Abstraction has 6549 states and 16556 transitions. [2021-02-19 19:51:39,279 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.25) internal successors, (54), 23 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:39,279 INFO L276 IsEmpty]: Start isEmpty. Operand 6549 states and 16556 transitions. [2021-02-19 19:51:39,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-19 19:51:39,282 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:39,282 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:39,482 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2021-02-19 19:51:39,483 INFO L428 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:39,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:39,483 INFO L82 PathProgramCache]: Analyzing trace with hash -799265489, now seen corresponding path program 70 times [2021-02-19 19:51:39,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:39,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109872785] [2021-02-19 19:51:39,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:39,567 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:39,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109872785] [2021-02-19 19:51:39,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603535515] [2021-02-19 19:51:39,567 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 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 [2021-02-19 19:51:39,587 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:51:39,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:39,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-02-19 19:51:39,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:39,774 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:39,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:39,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-02-19 19:51:39,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937176976] [2021-02-19 19:51:39,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-19 19:51:39,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:39,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-19 19:51:39,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2021-02-19 19:51:39,775 INFO L87 Difference]: Start difference. First operand 6549 states and 16556 transitions. Second operand has 25 states, 25 states have (on average 2.16) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:40,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:40,782 INFO L93 Difference]: Finished difference Result 7611 states and 18726 transitions. [2021-02-19 19:51:40,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-02-19 19:51:40,783 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-02-19 19:51:40,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:40,789 INFO L225 Difference]: With dead ends: 7611 [2021-02-19 19:51:40,789 INFO L226 Difference]: Without dead ends: 7575 [2021-02-19 19:51:40,790 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1782 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1318, Invalid=4232, Unknown=0, NotChecked=0, Total=5550 [2021-02-19 19:51:40,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7575 states. [2021-02-19 19:51:40,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7575 to 6635. [2021-02-19 19:51:40,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6635 states, 6634 states have (on average 2.537232438950859) internal successors, (16832), 6634 states have internal predecessors, (16832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6635 states to 6635 states and 16832 transitions. [2021-02-19 19:51:40,899 INFO L78 Accepts]: Start accepts. Automaton has 6635 states and 16832 transitions. Word has length 32 [2021-02-19 19:51:40,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:40,899 INFO L480 AbstractCegarLoop]: Abstraction has 6635 states and 16832 transitions. [2021-02-19 19:51:40,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 24 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:40,899 INFO L276 IsEmpty]: Start isEmpty. Operand 6635 states and 16832 transitions. [2021-02-19 19:51:40,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-19 19:51:40,903 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:40,903 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:41,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2021-02-19 19:51:41,104 INFO L428 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:41,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:41,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1158783725, now seen corresponding path program 71 times [2021-02-19 19:51:41,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:41,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636324862] [2021-02-19 19:51:41,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:41,139 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:41,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636324862] [2021-02-19 19:51:41,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573141431] [2021-02-19 19:51:41,140 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 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 [2021-02-19 19:51:41,164 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-02-19 19:51:41,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:41,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 39 conjunts are in the unsatisfiable core [2021-02-19 19:51:41,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:41,357 INFO L354 Elim1Store]: treesize reduction 72, result has 40.5 percent of original size [2021-02-19 19:51:41,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 130 treesize of output 111 [2021-02-19 19:51:41,522 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:51:41,546 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:41,623 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:51:41,623 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:130, output treesize:171 [2021-02-19 19:51:41,824 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-02-19 19:51:42,120 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-02-19 19:51:42,458 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 38 [2021-02-19 19:51:42,584 INFO L354 Elim1Store]: treesize reduction 78, result has 3.7 percent of original size [2021-02-19 19:51:42,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 103 treesize of output 40 [2021-02-19 19:51:42,586 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:42,664 INFO L628 ElimStorePlain]: treesize reduction 158, result has 59.5 percent of original size [2021-02-19 19:51:42,711 INFO L354 Elim1Store]: treesize reduction 40, result has 50.6 percent of original size [2021-02-19 19:51:42,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 75 [2021-02-19 19:51:42,714 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:42,723 INFO L628 ElimStorePlain]: treesize reduction 169, result has 1.7 percent of original size [2021-02-19 19:51:42,723 INFO L518 ElimStorePlain]: Eliminatee v_prenex_46 vanished before elimination [2021-02-19 19:51:42,723 INFO L518 ElimStorePlain]: Eliminatee v_prenex_44 vanished before elimination [2021-02-19 19:51:42,724 INFO L518 ElimStorePlain]: Eliminatee v_prenex_48 vanished before elimination [2021-02-19 19:51:42,724 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:51:42,724 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 10 variables, input treesize:486, output treesize:3 [2021-02-19 19:51:42,735 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:42,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:42,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 17 [2021-02-19 19:51:42,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071339712] [2021-02-19 19:51:42,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 19:51:42,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:42,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 19:51:42,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-02-19 19:51:42,736 INFO L87 Difference]: Start difference. First operand 6635 states and 16832 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 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) [2021-02-19 19:51:43,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:43,040 INFO L93 Difference]: Finished difference Result 7845 states and 19757 transitions. [2021-02-19 19:51:43,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-19 19:51:43,040 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 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 34 [2021-02-19 19:51:43,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:43,048 INFO L225 Difference]: With dead ends: 7845 [2021-02-19 19:51:43,048 INFO L226 Difference]: Without dead ends: 7838 [2021-02-19 19:51:43,048 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-02-19 19:51:43,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7838 states. [2021-02-19 19:51:43,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7838 to 7360. [2021-02-19 19:51:43,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7360 states, 7359 states have (on average 2.545726321511075) internal successors, (18734), 7359 states have internal predecessors, (18734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:43,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7360 states to 7360 states and 18734 transitions. [2021-02-19 19:51:43,134 INFO L78 Accepts]: Start accepts. Automaton has 7360 states and 18734 transitions. Word has length 34 [2021-02-19 19:51:43,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:43,135 INFO L480 AbstractCegarLoop]: Abstraction has 7360 states and 18734 transitions. [2021-02-19 19:51:43,135 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 17 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) [2021-02-19 19:51:43,135 INFO L276 IsEmpty]: Start isEmpty. Operand 7360 states and 18734 transitions. [2021-02-19 19:51:43,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-19 19:51:43,141 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:43,141 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:43,354 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable236 [2021-02-19 19:51:43,354 INFO L428 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:43,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:43,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1676056045, now seen corresponding path program 72 times [2021-02-19 19:51:43,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:43,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390785565] [2021-02-19 19:51:43,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:51:43,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390785565] [2021-02-19 19:51:43,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168390271] [2021-02-19 19:51:43,388 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 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-02-19 19:51:43,421 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-02-19 19:51:43,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:43,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 37 conjunts are in the unsatisfiable core [2021-02-19 19:51:43,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:43,610 INFO L446 ElimStorePlain]: Different costs {10=[f], 36=[f_inv]} [2021-02-19 19:51:43,657 INFO L354 Elim1Store]: treesize reduction 32, result has 60.5 percent of original size [2021-02-19 19:51:43,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 158 treesize of output 120 [2021-02-19 19:51:43,962 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:51:43,985 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:44,019 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:44,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 187 treesize of output 147 [2021-02-19 19:51:44,081 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:44,082 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:44,083 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:51:44,083 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:158, output treesize:3 [2021-02-19 19:51:44,094 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:44,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:44,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 17 [2021-02-19 19:51:44,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845518972] [2021-02-19 19:51:44,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 19:51:44,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:44,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 19:51:44,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-02-19 19:51:44,095 INFO L87 Difference]: Start difference. First operand 7360 states and 18734 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:44,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:44,198 INFO L93 Difference]: Finished difference Result 8008 states and 20271 transitions. [2021-02-19 19:51:44,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-19 19:51:44,199 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-02-19 19:51:44,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:44,206 INFO L225 Difference]: With dead ends: 8008 [2021-02-19 19:51:44,206 INFO L226 Difference]: Without dead ends: 7999 [2021-02-19 19:51:44,206 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-02-19 19:51:44,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7999 states. [2021-02-19 19:51:44,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7999 to 7776. [2021-02-19 19:51:44,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7776 states, 7775 states have (on average 2.5569131832797427) internal successors, (19880), 7775 states have internal predecessors, (19880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:44,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7776 states to 7776 states and 19880 transitions. [2021-02-19 19:51:44,287 INFO L78 Accepts]: Start accepts. Automaton has 7776 states and 19880 transitions. Word has length 34 [2021-02-19 19:51:44,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:44,287 INFO L480 AbstractCegarLoop]: Abstraction has 7776 states and 19880 transitions. [2021-02-19 19:51:44,287 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:44,287 INFO L276 IsEmpty]: Start isEmpty. Operand 7776 states and 19880 transitions. [2021-02-19 19:51:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-19 19:51:44,292 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:44,292 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:44,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable448 [2021-02-19 19:51:44,506 INFO L428 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:44,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:44,507 INFO L82 PathProgramCache]: Analyzing trace with hash 123828973, now seen corresponding path program 73 times [2021-02-19 19:51:44,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:44,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287273162] [2021-02-19 19:51:44,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:44,540 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:51:44,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287273162] [2021-02-19 19:51:44,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133158977] [2021-02-19 19:51:44,540 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 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 [2021-02-19 19:51:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:44,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 33 conjunts are in the unsatisfiable core [2021-02-19 19:51:44,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:44,744 INFO L354 Elim1Store]: treesize reduction 154, result has 36.1 percent of original size [2021-02-19 19:51:44,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 119 treesize of output 127 [2021-02-19 19:51:44,747 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:44,772 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:44,773 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:51:44,773 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:119, output treesize:124 [2021-02-19 19:51:44,843 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-02-19 19:51:45,005 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2021-02-19 19:51:45,021 INFO L446 ElimStorePlain]: Different costs {3=[f], 6=[v_prenex_50], 10=[v_prenex_51]} [2021-02-19 19:51:45,033 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:45,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 19 treesize of output 37 [2021-02-19 19:51:45,034 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:45,039 INFO L628 ElimStorePlain]: treesize reduction 97, result has 3.0 percent of original size [2021-02-19 19:51:45,039 INFO L518 ElimStorePlain]: Eliminatee v_prenex_50 vanished before elimination [2021-02-19 19:51:45,039 INFO L518 ElimStorePlain]: Eliminatee v_prenex_51 vanished before elimination [2021-02-19 19:51:45,040 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:51:45,040 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:116, output treesize:3 [2021-02-19 19:51:45,051 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:45,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:45,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 17 [2021-02-19 19:51:45,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466719435] [2021-02-19 19:51:45,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 19:51:45,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:45,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 19:51:45,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-02-19 19:51:45,052 INFO L87 Difference]: Start difference. First operand 7776 states and 19880 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:45,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:45,200 INFO L93 Difference]: Finished difference Result 8649 states and 21915 transitions. [2021-02-19 19:51:45,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-19 19:51:45,200 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-02-19 19:51:45,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:45,209 INFO L225 Difference]: With dead ends: 8649 [2021-02-19 19:51:45,209 INFO L226 Difference]: Without dead ends: 8624 [2021-02-19 19:51:45,209 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-02-19 19:51:45,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8624 states. [2021-02-19 19:51:45,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8624 to 8091. [2021-02-19 19:51:45,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8091 states, 8090 states have (on average 2.5673671199011125) internal successors, (20770), 8090 states have internal predecessors, (20770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:45,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8091 states to 8091 states and 20770 transitions. [2021-02-19 19:51:45,302 INFO L78 Accepts]: Start accepts. Automaton has 8091 states and 20770 transitions. Word has length 34 [2021-02-19 19:51:45,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:45,302 INFO L480 AbstractCegarLoop]: Abstraction has 8091 states and 20770 transitions. [2021-02-19 19:51:45,302 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:45,302 INFO L276 IsEmpty]: Start isEmpty. Operand 8091 states and 20770 transitions. [2021-02-19 19:51:45,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-19 19:51:45,306 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:45,306 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:45,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable607,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:45,507 INFO L428 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:45,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:45,507 INFO L82 PathProgramCache]: Analyzing trace with hash -1212735507, now seen corresponding path program 74 times [2021-02-19 19:51:45,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:45,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733361570] [2021-02-19 19:51:45,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:45,539 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:51:45,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733361570] [2021-02-19 19:51:45,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96416482] [2021-02-19 19:51:45,539 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 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-02-19 19:51:45,568 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:51:45,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:45,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 33 conjunts are in the unsatisfiable core [2021-02-19 19:51:45,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:45,731 INFO L354 Elim1Store]: treesize reduction 79, result has 47.7 percent of original size [2021-02-19 19:51:45,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 117 treesize of output 110 [2021-02-19 19:51:45,733 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:45,755 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:45,756 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:51:45,756 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:117, output treesize:132 [2021-02-19 19:51:45,850 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-02-19 19:51:46,095 WARN L202 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 35 [2021-02-19 19:51:46,193 INFO L446 ElimStorePlain]: Different costs {6=[f], 10=[v_prenex_54, v_prenex_55]} [2021-02-19 19:51:46,217 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:46,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 23 treesize of output 64 [2021-02-19 19:51:46,219 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:46,225 INFO L628 ElimStorePlain]: treesize reduction 153, result has 1.9 percent of original size [2021-02-19 19:51:46,225 INFO L518 ElimStorePlain]: Eliminatee v_prenex_54 vanished before elimination [2021-02-19 19:51:46,225 INFO L518 ElimStorePlain]: Eliminatee v_prenex_55 vanished before elimination [2021-02-19 19:51:46,225 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 3 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:51:46,226 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:176, output treesize:3 [2021-02-19 19:51:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:46,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:46,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 17 [2021-02-19 19:51:46,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520795595] [2021-02-19 19:51:46,239 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 19:51:46,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:46,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 19:51:46,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-02-19 19:51:46,239 INFO L87 Difference]: Start difference. First operand 8091 states and 20770 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:46,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:46,488 INFO L93 Difference]: Finished difference Result 9127 states and 23212 transitions. [2021-02-19 19:51:46,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-19 19:51:46,488 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-02-19 19:51:46,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:46,497 INFO L225 Difference]: With dead ends: 9127 [2021-02-19 19:51:46,497 INFO L226 Difference]: Without dead ends: 9098 [2021-02-19 19:51:46,497 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-02-19 19:51:46,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9098 states. [2021-02-19 19:51:46,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9098 to 8475. [2021-02-19 19:51:46,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8475 states, 8474 states have (on average 2.577059240028322) internal successors, (21838), 8474 states have internal predecessors, (21838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:46,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8475 states to 8475 states and 21838 transitions. [2021-02-19 19:51:46,597 INFO L78 Accepts]: Start accepts. Automaton has 8475 states and 21838 transitions. Word has length 34 [2021-02-19 19:51:46,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:46,597 INFO L480 AbstractCegarLoop]: Abstraction has 8475 states and 21838 transitions. [2021-02-19 19:51:46,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:46,597 INFO L276 IsEmpty]: Start isEmpty. Operand 8475 states and 21838 transitions. [2021-02-19 19:51:46,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-19 19:51:46,602 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:46,602 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:46,802 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable612 [2021-02-19 19:51:46,802 INFO L428 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:46,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:46,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1455979283, now seen corresponding path program 75 times [2021-02-19 19:51:46,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:46,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705472079] [2021-02-19 19:51:46,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:46,835 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:51:46,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705472079] [2021-02-19 19:51:46,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517440808] [2021-02-19 19:51:46,835 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 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 [2021-02-19 19:51:46,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-02-19 19:51:46,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:46,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 37 conjunts are in the unsatisfiable core [2021-02-19 19:51:46,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:47,046 INFO L446 ElimStorePlain]: Different costs {15=[f_inv], 28=[f]} [2021-02-19 19:51:47,093 INFO L354 Elim1Store]: treesize reduction 74, result has 43.5 percent of original size [2021-02-19 19:51:47,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 158 treesize of output 123 [2021-02-19 19:51:47,241 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:51:47,263 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:47,295 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:47,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 139 treesize of output 144 [2021-02-19 19:51:47,313 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:47,314 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:47,314 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:51:47,314 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:158, output treesize:3 [2021-02-19 19:51:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:47,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:47,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 17 [2021-02-19 19:51:47,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041590498] [2021-02-19 19:51:47,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 19:51:47,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:47,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 19:51:47,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-02-19 19:51:47,326 INFO L87 Difference]: Start difference. First operand 8475 states and 21838 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:47,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:47,489 INFO L93 Difference]: Finished difference Result 9518 states and 24331 transitions. [2021-02-19 19:51:47,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-19 19:51:47,489 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-02-19 19:51:47,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:47,498 INFO L225 Difference]: With dead ends: 9518 [2021-02-19 19:51:47,498 INFO L226 Difference]: Without dead ends: 9492 [2021-02-19 19:51:47,499 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-02-19 19:51:47,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9492 states. [2021-02-19 19:51:47,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9492 to 8919. [2021-02-19 19:51:47,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8919 states, 8918 states have (on average 2.588024220677282) internal successors, (23080), 8918 states have internal predecessors, (23080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8919 states to 8919 states and 23080 transitions. [2021-02-19 19:51:47,604 INFO L78 Accepts]: Start accepts. Automaton has 8919 states and 23080 transitions. Word has length 34 [2021-02-19 19:51:47,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:47,604 INFO L480 AbstractCegarLoop]: Abstraction has 8919 states and 23080 transitions. [2021-02-19 19:51:47,604 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:47,604 INFO L276 IsEmpty]: Start isEmpty. Operand 8919 states and 23080 transitions. [2021-02-19 19:51:47,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-19 19:51:47,609 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:47,609 INFO L506 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:47,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable635,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:47,809 INFO L428 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:47,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:47,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1009953261, now seen corresponding path program 76 times [2021-02-19 19:51:47,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:47,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677773115] [2021-02-19 19:51:47,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:51:47,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677773115] [2021-02-19 19:51:47,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094118905] [2021-02-19 19:51:47,843 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 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 [2021-02-19 19:51:47,862 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:51:47,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:47,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 33 conjunts are in the unsatisfiable core [2021-02-19 19:51:47,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:47,974 INFO L354 Elim1Store]: treesize reduction 32, result has 60.5 percent of original size [2021-02-19 19:51:47,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 89 treesize of output 89 [2021-02-19 19:51:47,976 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:47,998 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:47,999 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:51:47,999 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:89, output treesize:162 [2021-02-19 19:51:48,118 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-02-19 19:51:48,456 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 38 [2021-02-19 19:51:48,824 INFO L354 Elim1Store]: treesize reduction 78, result has 3.7 percent of original size [2021-02-19 19:51:48,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 98 treesize of output 43 [2021-02-19 19:51:48,825 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:48,895 INFO L628 ElimStorePlain]: treesize reduction 171, result has 56.8 percent of original size [2021-02-19 19:51:48,919 INFO L354 Elim1Store]: treesize reduction 66, result has 18.5 percent of original size [2021-02-19 19:51:48,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 48 treesize of output 40 [2021-02-19 19:51:48,921 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:48,947 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:48,966 INFO L354 Elim1Store]: treesize reduction 71, result has 12.3 percent of original size [2021-02-19 19:51:48,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 51 treesize of output 34 [2021-02-19 19:51:48,968 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:48,991 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:51:49,033 INFO L354 Elim1Store]: treesize reduction 40, result has 50.6 percent of original size [2021-02-19 19:51:49,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 63 treesize of output 75 [2021-02-19 19:51:49,036 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 19:51:49,043 INFO L628 ElimStorePlain]: treesize reduction 78, result has 3.7 percent of original size [2021-02-19 19:51:49,043 INFO L518 ElimStorePlain]: Eliminatee v_prenex_66 vanished before elimination [2021-02-19 19:51:49,044 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 5 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:51:49,044 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 10 variables, input treesize:486, output treesize:3 [2021-02-19 19:51:49,060 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:51:49,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:49,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12] total 17 [2021-02-19 19:51:49,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504440194] [2021-02-19 19:51:49,060 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-02-19 19:51:49,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:49,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-02-19 19:51:49,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-02-19 19:51:49,061 INFO L87 Difference]: Start difference. First operand 8919 states and 23080 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:49,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:49,309 INFO L93 Difference]: Finished difference Result 9867 states and 25209 transitions. [2021-02-19 19:51:49,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-19 19:51:49,309 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-02-19 19:51:49,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:49,320 INFO L225 Difference]: With dead ends: 9867 [2021-02-19 19:51:49,320 INFO L226 Difference]: Without dead ends: 9860 [2021-02-19 19:51:49,320 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-02-19 19:51:49,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9860 states. [2021-02-19 19:51:49,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9860 to 9257. [2021-02-19 19:51:49,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9257 states, 9256 states have (on average 2.5956136560069143) internal successors, (24025), 9256 states have internal predecessors, (24025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:49,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9257 states to 9257 states and 24025 transitions. [2021-02-19 19:51:49,442 INFO L78 Accepts]: Start accepts. Automaton has 9257 states and 24025 transitions. Word has length 34 [2021-02-19 19:51:49,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:49,442 INFO L480 AbstractCegarLoop]: Abstraction has 9257 states and 24025 transitions. [2021-02-19 19:51:49,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:49,442 INFO L276 IsEmpty]: Start isEmpty. Operand 9257 states and 24025 transitions. [2021-02-19 19:51:49,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:51:49,448 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:49,448 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:49,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable696 [2021-02-19 19:51:49,648 INFO L428 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:49,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:49,649 INFO L82 PathProgramCache]: Analyzing trace with hash -513601233, now seen corresponding path program 77 times [2021-02-19 19:51:49,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:49,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522711211] [2021-02-19 19:51:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:49,777 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:49,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522711211] [2021-02-19 19:51:49,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253350925] [2021-02-19 19:51:49,778 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 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 [2021-02-19 19:51:49,799 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-02-19 19:51:49,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:49,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:51:49,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:50,041 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:50,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:50,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 29 [2021-02-19 19:51:50,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083596366] [2021-02-19 19:51:50,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-02-19 19:51:50,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:50,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-02-19 19:51:50,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2021-02-19 19:51:50,042 INFO L87 Difference]: Start difference. First operand 9257 states and 24025 transitions. Second operand has 30 states, 30 states have (on average 2.2) internal successors, (66), 29 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:51,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:51,488 INFO L93 Difference]: Finished difference Result 10763 states and 27124 transitions. [2021-02-19 19:51:51,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-02-19 19:51:51,489 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.2) internal successors, (66), 29 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:51:51,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:51,500 INFO L225 Difference]: With dead ends: 10763 [2021-02-19 19:51:51,500 INFO L226 Difference]: Without dead ends: 10763 [2021-02-19 19:51:51,500 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2236 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2085, Invalid=5925, Unknown=0, NotChecked=0, Total=8010 [2021-02-19 19:51:51,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10763 states. [2021-02-19 19:51:51,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10763 to 8556. [2021-02-19 19:51:51,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8556 states, 8555 states have (on average 2.586791350087668) internal successors, (22130), 8555 states have internal predecessors, (22130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:51,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8556 states to 8556 states and 22130 transitions. [2021-02-19 19:51:51,599 INFO L78 Accepts]: Start accepts. Automaton has 8556 states and 22130 transitions. Word has length 36 [2021-02-19 19:51:51,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:51,599 INFO L480 AbstractCegarLoop]: Abstraction has 8556 states and 22130 transitions. [2021-02-19 19:51:51,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.2) internal successors, (66), 29 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:51,600 INFO L276 IsEmpty]: Start isEmpty. Operand 8556 states and 22130 transitions. [2021-02-19 19:51:51,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:51:51,605 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:51,605 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:51,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable736 [2021-02-19 19:51:51,810 INFO L428 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:51,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:51,810 INFO L82 PathProgramCache]: Analyzing trace with hash 271756139, now seen corresponding path program 78 times [2021-02-19 19:51:51,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:51,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108792392] [2021-02-19 19:51:51,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:51,907 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:51,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108792392] [2021-02-19 19:51:51,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751127583] [2021-02-19 19:51:51,908 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 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 [2021-02-19 19:51:51,929 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-02-19 19:51:51,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:51,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:51:51,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:52,188 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:52,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:52,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-02-19 19:51:52,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392462910] [2021-02-19 19:51:52,189 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-02-19 19:51:52,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:52,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-02-19 19:51:52,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2021-02-19 19:51:52,189 INFO L87 Difference]: Start difference. First operand 8556 states and 22130 transitions. Second operand has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 28 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:54,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:54,402 INFO L93 Difference]: Finished difference Result 12764 states and 31601 transitions. [2021-02-19 19:51:54,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-02-19 19:51:54,403 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 28 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:51:54,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:54,417 INFO L225 Difference]: With dead ends: 12764 [2021-02-19 19:51:54,417 INFO L226 Difference]: Without dead ends: 12621 [2021-02-19 19:51:54,418 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4553 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2979, Invalid=10827, Unknown=0, NotChecked=0, Total=13806 [2021-02-19 19:51:54,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12621 states. [2021-02-19 19:51:54,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12621 to 8919. [2021-02-19 19:51:54,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8919 states, 8918 states have (on average 2.585557299843014) internal successors, (23058), 8918 states have internal predecessors, (23058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:54,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8919 states to 8919 states and 23058 transitions. [2021-02-19 19:51:54,554 INFO L78 Accepts]: Start accepts. Automaton has 8919 states and 23058 transitions. Word has length 36 [2021-02-19 19:51:54,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:54,554 INFO L480 AbstractCegarLoop]: Abstraction has 8919 states and 23058 transitions. [2021-02-19 19:51:54,554 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 28 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:54,554 INFO L276 IsEmpty]: Start isEmpty. Operand 8919 states and 23058 transitions. [2021-02-19 19:51:54,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:51:54,560 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:54,560 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:54,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable737,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:54,760 INFO L428 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:54,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:54,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1689399221, now seen corresponding path program 79 times [2021-02-19 19:51:54,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:54,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086538374] [2021-02-19 19:51:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:54,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086538374] [2021-02-19 19:51:54,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240367251] [2021-02-19 19:51:54,829 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 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 [2021-02-19 19:51:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:54,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:51:54,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:55,124 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:55,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:55,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15] total 23 [2021-02-19 19:51:55,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434989916] [2021-02-19 19:51:55,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-19 19:51:55,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:55,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-19 19:51:55,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2021-02-19 19:51:55,130 INFO L87 Difference]: Start difference. First operand 8919 states and 23058 transitions. Second operand has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:56,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:56,924 INFO L93 Difference]: Finished difference Result 16283 states and 41247 transitions. [2021-02-19 19:51:56,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-02-19 19:51:56,925 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:51:56,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:56,943 INFO L225 Difference]: With dead ends: 16283 [2021-02-19 19:51:56,943 INFO L226 Difference]: Without dead ends: 16267 [2021-02-19 19:51:56,944 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3729 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2811, Invalid=7695, Unknown=0, NotChecked=0, Total=10506 [2021-02-19 19:51:56,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16267 states. [2021-02-19 19:51:57,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16267 to 11626. [2021-02-19 19:51:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11626 states, 11625 states have (on average 2.584602150537634) internal successors, (30046), 11625 states have internal predecessors, (30046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:57,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11626 states to 11626 states and 30046 transitions. [2021-02-19 19:51:57,123 INFO L78 Accepts]: Start accepts. Automaton has 11626 states and 30046 transitions. Word has length 36 [2021-02-19 19:51:57,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:57,123 INFO L480 AbstractCegarLoop]: Abstraction has 11626 states and 30046 transitions. [2021-02-19 19:51:57,124 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:57,124 INFO L276 IsEmpty]: Start isEmpty. Operand 11626 states and 30046 transitions. [2021-02-19 19:51:57,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:51:57,130 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:57,130 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:57,331 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable738,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:57,331 INFO L428 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:57,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:57,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1221669993, now seen corresponding path program 80 times [2021-02-19 19:51:57,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:57,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459589920] [2021-02-19 19:51:57,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 31 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:57,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459589920] [2021-02-19 19:51:57,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036283591] [2021-02-19 19:51:57,395 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 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 [2021-02-19 19:51:57,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:51:57,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:57,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:51:57,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:57,639 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 31 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:57,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:57,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15] total 23 [2021-02-19 19:51:57,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906192317] [2021-02-19 19:51:57,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-19 19:51:57,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:57,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-19 19:51:57,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2021-02-19 19:51:57,640 INFO L87 Difference]: Start difference. First operand 11626 states and 30046 transitions. Second operand has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:58,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:51:58,930 INFO L93 Difference]: Finished difference Result 12191 states and 31159 transitions. [2021-02-19 19:51:58,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-02-19 19:51:58,931 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:51:58,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:51:58,943 INFO L225 Difference]: With dead ends: 12191 [2021-02-19 19:51:58,943 INFO L226 Difference]: Without dead ends: 12187 [2021-02-19 19:51:58,944 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2261 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1724, Invalid=5416, Unknown=0, NotChecked=0, Total=7140 [2021-02-19 19:51:58,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12187 states. [2021-02-19 19:51:59,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12187 to 11626. [2021-02-19 19:51:59,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11626 states, 11625 states have (on average 2.5839139784946235) internal successors, (30038), 11625 states have internal predecessors, (30038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:59,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11626 states to 11626 states and 30038 transitions. [2021-02-19 19:51:59,100 INFO L78 Accepts]: Start accepts. Automaton has 11626 states and 30038 transitions. Word has length 36 [2021-02-19 19:51:59,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:51:59,101 INFO L480 AbstractCegarLoop]: Abstraction has 11626 states and 30038 transitions. [2021-02-19 19:51:59,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:51:59,101 INFO L276 IsEmpty]: Start isEmpty. Operand 11626 states and 30038 transitions. [2021-02-19 19:51:59,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:51:59,108 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:51:59,108 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:51:59,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable739,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:51:59,308 INFO L428 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:51:59,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:51:59,308 INFO L82 PathProgramCache]: Analyzing trace with hash -845750677, now seen corresponding path program 81 times [2021-02-19 19:51:59,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:51:59,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199921310] [2021-02-19 19:51:59,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:51:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:51:59,367 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 39 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:51:59,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199921310] [2021-02-19 19:51:59,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45659953] [2021-02-19 19:51:59,368 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 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 [2021-02-19 19:51:59,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-02-19 19:51:59,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:51:59,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:51:59,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:51:59,609 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 31 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:51:59,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:51:59,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15] total 23 [2021-02-19 19:51:59,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719759651] [2021-02-19 19:51:59,610 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-19 19:51:59,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:51:59,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-19 19:51:59,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2021-02-19 19:51:59,610 INFO L87 Difference]: Start difference. First operand 11626 states and 30038 transitions. Second operand has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:00,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:00,642 INFO L93 Difference]: Finished difference Result 15216 states and 38818 transitions. [2021-02-19 19:52:00,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-02-19 19:52:00,643 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:00,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:00,660 INFO L225 Difference]: With dead ends: 15216 [2021-02-19 19:52:00,660 INFO L226 Difference]: Without dead ends: 15195 [2021-02-19 19:52:00,661 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1417 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=3654, Unknown=0, NotChecked=0, Total=4830 [2021-02-19 19:52:00,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15195 states. [2021-02-19 19:52:00,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15195 to 11850. [2021-02-19 19:52:00,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11850 states, 11849 states have (on average 2.593467803190143) internal successors, (30730), 11849 states have internal predecessors, (30730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11850 states to 11850 states and 30730 transitions. [2021-02-19 19:52:00,886 INFO L78 Accepts]: Start accepts. Automaton has 11850 states and 30730 transitions. Word has length 36 [2021-02-19 19:52:00,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:00,886 INFO L480 AbstractCegarLoop]: Abstraction has 11850 states and 30730 transitions. [2021-02-19 19:52:00,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.6666666666666665) internal successors, (64), 23 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:00,886 INFO L276 IsEmpty]: Start isEmpty. Operand 11850 states and 30730 transitions. [2021-02-19 19:52:00,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:52:00,893 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:00,893 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:01,093 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable740 [2021-02-19 19:52:01,093 INFO L428 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:01,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:01,094 INFO L82 PathProgramCache]: Analyzing trace with hash 294044411, now seen corresponding path program 82 times [2021-02-19 19:52:01,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:01,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433688018] [2021-02-19 19:52:01,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:01,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433688018] [2021-02-19 19:52:01,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104574837] [2021-02-19 19:52:01,166 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 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 [2021-02-19 19:52:01,188 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:52:01,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:01,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:52:01,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:01,436 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:01,436 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:01,436 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2021-02-19 19:52:01,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749225806] [2021-02-19 19:52:01,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-19 19:52:01,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:01,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-19 19:52:01,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2021-02-19 19:52:01,437 INFO L87 Difference]: Start difference. First operand 11850 states and 30730 transitions. Second operand has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:02,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:02,873 INFO L93 Difference]: Finished difference Result 13259 states and 33760 transitions. [2021-02-19 19:52:02,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-02-19 19:52:02,874 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:02,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:02,889 INFO L225 Difference]: With dead ends: 13259 [2021-02-19 19:52:02,889 INFO L226 Difference]: Without dead ends: 13241 [2021-02-19 19:52:02,890 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2419 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1777, Invalid=5705, Unknown=0, NotChecked=0, Total=7482 [2021-02-19 19:52:02,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13241 states. [2021-02-19 19:52:03,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13241 to 12104. [2021-02-19 19:52:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12104 states, 12103 states have (on average 2.5956374452615054) internal successors, (31415), 12103 states have internal predecessors, (31415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:03,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12104 states to 12104 states and 31415 transitions. [2021-02-19 19:52:03,065 INFO L78 Accepts]: Start accepts. Automaton has 12104 states and 31415 transitions. Word has length 36 [2021-02-19 19:52:03,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:03,065 INFO L480 AbstractCegarLoop]: Abstraction has 12104 states and 31415 transitions. [2021-02-19 19:52:03,065 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:03,065 INFO L276 IsEmpty]: Start isEmpty. Operand 12104 states and 31415 transitions. [2021-02-19 19:52:03,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:52:03,072 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:03,072 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:03,272 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable741 [2021-02-19 19:52:03,272 INFO L428 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:03,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:03,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1269741449, now seen corresponding path program 83 times [2021-02-19 19:52:03,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:03,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320269521] [2021-02-19 19:52:03,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:03,352 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:03,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320269521] [2021-02-19 19:52:03,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355144424] [2021-02-19 19:52:03,353 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 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 [2021-02-19 19:52:03,376 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-02-19 19:52:03,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:03,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:52:03,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:03,625 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:03,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:03,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 25 [2021-02-19 19:52:03,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685763685] [2021-02-19 19:52:03,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-19 19:52:03,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:03,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-19 19:52:03,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650 [2021-02-19 19:52:03,627 INFO L87 Difference]: Start difference. First operand 12104 states and 31415 transitions. Second operand has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:05,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:05,071 INFO L93 Difference]: Finished difference Result 13923 states and 35275 transitions. [2021-02-19 19:52:05,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-02-19 19:52:05,071 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:05,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:05,087 INFO L225 Difference]: With dead ends: 13923 [2021-02-19 19:52:05,087 INFO L226 Difference]: Without dead ends: 13889 [2021-02-19 19:52:05,088 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2629 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1841, Invalid=5991, Unknown=0, NotChecked=0, Total=7832 [2021-02-19 19:52:05,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13889 states. [2021-02-19 19:52:05,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13889 to 11939. [2021-02-19 19:52:05,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11939 states, 11938 states have (on average 2.5983414307254145) internal successors, (31019), 11938 states have internal predecessors, (31019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:05,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11939 states to 11939 states and 31019 transitions. [2021-02-19 19:52:05,236 INFO L78 Accepts]: Start accepts. Automaton has 11939 states and 31019 transitions. Word has length 36 [2021-02-19 19:52:05,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:05,236 INFO L480 AbstractCegarLoop]: Abstraction has 11939 states and 31019 transitions. [2021-02-19 19:52:05,236 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:05,236 INFO L276 IsEmpty]: Start isEmpty. Operand 11939 states and 31019 transitions. [2021-02-19 19:52:05,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:52:05,243 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:05,243 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:05,443 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable742,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:52:05,443 INFO L428 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:05,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:05,444 INFO L82 PathProgramCache]: Analyzing trace with hash -829399309, now seen corresponding path program 84 times [2021-02-19 19:52:05,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:05,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760856211] [2021-02-19 19:52:05,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:05,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760856211] [2021-02-19 19:52:05,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408952644] [2021-02-19 19:52:05,528 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 [2021-02-19 19:52:05,551 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-02-19 19:52:05,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:05,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:52:05,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:05,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:05,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2021-02-19 19:52:05,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027072010] [2021-02-19 19:52:05,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-19 19:52:05,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:05,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-19 19:52:05,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2021-02-19 19:52:05,843 INFO L87 Difference]: Start difference. First operand 11939 states and 31019 transitions. Second operand has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:07,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:07,254 INFO L93 Difference]: Finished difference Result 14229 states and 35822 transitions. [2021-02-19 19:52:07,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-02-19 19:52:07,254 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:07,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:07,270 INFO L225 Difference]: With dead ends: 14229 [2021-02-19 19:52:07,271 INFO L226 Difference]: Without dead ends: 14185 [2021-02-19 19:52:07,271 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2812 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1915, Invalid=6275, Unknown=0, NotChecked=0, Total=8190 [2021-02-19 19:52:07,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14185 states. [2021-02-19 19:52:07,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14185 to 11149. [2021-02-19 19:52:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11149 states, 11148 states have (on average 2.601184068891281) internal successors, (28998), 11148 states have internal predecessors, (28998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:07,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11149 states to 11149 states and 28998 transitions. [2021-02-19 19:52:07,430 INFO L78 Accepts]: Start accepts. Automaton has 11149 states and 28998 transitions. Word has length 36 [2021-02-19 19:52:07,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:07,430 INFO L480 AbstractCegarLoop]: Abstraction has 11149 states and 28998 transitions. [2021-02-19 19:52:07,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:07,430 INFO L276 IsEmpty]: Start isEmpty. Operand 11149 states and 28998 transitions. [2021-02-19 19:52:07,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:52:07,438 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:07,438 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:07,650 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable743 [2021-02-19 19:52:07,650 INFO L428 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:07,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:07,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1432602223, now seen corresponding path program 85 times [2021-02-19 19:52:07,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:07,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228507728] [2021-02-19 19:52:07,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:07,740 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 24 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:07,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228507728] [2021-02-19 19:52:07,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438344088] [2021-02-19 19:52:07,740 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 [2021-02-19 19:52:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:07,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:52:07,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:08,006 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 24 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:08,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:08,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2021-02-19 19:52:08,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266224445] [2021-02-19 19:52:08,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-19 19:52:08,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:08,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-19 19:52:08,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2021-02-19 19:52:08,007 INFO L87 Difference]: Start difference. First operand 11149 states and 28998 transitions. Second operand has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 27 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:09,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:09,441 INFO L93 Difference]: Finished difference Result 13990 states and 34960 transitions. [2021-02-19 19:52:09,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-02-19 19:52:09,442 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 27 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:09,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:09,457 INFO L225 Difference]: With dead ends: 13990 [2021-02-19 19:52:09,457 INFO L226 Difference]: Without dead ends: 13948 [2021-02-19 19:52:09,458 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2949 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1998, Invalid=6558, Unknown=0, NotChecked=0, Total=8556 [2021-02-19 19:52:09,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13948 states. [2021-02-19 19:52:09,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13948 to 9962. [2021-02-19 19:52:09,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9962 states, 9961 states have (on average 2.597731151490814) internal successors, (25876), 9961 states have internal predecessors, (25876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:09,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9962 states to 9962 states and 25876 transitions. [2021-02-19 19:52:09,602 INFO L78 Accepts]: Start accepts. Automaton has 9962 states and 25876 transitions. Word has length 36 [2021-02-19 19:52:09,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:09,602 INFO L480 AbstractCegarLoop]: Abstraction has 9962 states and 25876 transitions. [2021-02-19 19:52:09,602 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 27 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:09,602 INFO L276 IsEmpty]: Start isEmpty. Operand 9962 states and 25876 transitions. [2021-02-19 19:52:09,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:52:09,608 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:09,608 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:09,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable744,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:52:09,808 INFO L428 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:09,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:09,808 INFO L82 PathProgramCache]: Analyzing trace with hash 62917935, now seen corresponding path program 86 times [2021-02-19 19:52:09,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:09,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549711707] [2021-02-19 19:52:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:09,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:09,922 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 24 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:52:09,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549711707] [2021-02-19 19:52:09,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540667144] [2021-02-19 19:52:09,922 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 [2021-02-19 19:52:09,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:52:09,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:09,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:52:09,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:10,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:10,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-02-19 19:52:10,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283818288] [2021-02-19 19:52:10,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-02-19 19:52:10,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:10,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-02-19 19:52:10,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=665, Unknown=0, NotChecked=0, Total=812 [2021-02-19 19:52:10,185 INFO L87 Difference]: Start difference. First operand 9962 states and 25876 transitions. Second operand has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 28 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:11,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:11,670 INFO L93 Difference]: Finished difference Result 12322 states and 30673 transitions. [2021-02-19 19:52:11,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-02-19 19:52:11,670 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 28 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:11,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:11,683 INFO L225 Difference]: With dead ends: 12322 [2021-02-19 19:52:11,683 INFO L226 Difference]: Without dead ends: 12322 [2021-02-19 19:52:11,684 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2304 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1981, Invalid=6029, Unknown=0, NotChecked=0, Total=8010 [2021-02-19 19:52:11,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12322 states. [2021-02-19 19:52:11,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12322 to 8944. [2021-02-19 19:52:11,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8944 states, 8943 states have (on average 2.5896231689589624) internal successors, (23159), 8943 states have internal predecessors, (23159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:11,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8944 states to 8944 states and 23159 transitions. [2021-02-19 19:52:11,794 INFO L78 Accepts]: Start accepts. Automaton has 8944 states and 23159 transitions. Word has length 36 [2021-02-19 19:52:11,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:11,795 INFO L480 AbstractCegarLoop]: Abstraction has 8944 states and 23159 transitions. [2021-02-19 19:52:11,795 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.2413793103448274) internal successors, (65), 28 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:11,795 INFO L276 IsEmpty]: Start isEmpty. Operand 8944 states and 23159 transitions. [2021-02-19 19:52:11,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:52:11,800 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:11,800 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:12,000 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable745 [2021-02-19 19:52:12,000 INFO L428 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:12,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:12,000 INFO L82 PathProgramCache]: Analyzing trace with hash -655817109, now seen corresponding path program 87 times [2021-02-19 19:52:12,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:12,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668700628] [2021-02-19 19:52:12,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:12,099 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 27 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:52:12,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668700628] [2021-02-19 19:52:12,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365220778] [2021-02-19 19:52:12,099 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 [2021-02-19 19:52:12,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-02-19 19:52:12,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:12,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:52:12,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:12,363 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:12,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:12,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2021-02-19 19:52:12,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808354346] [2021-02-19 19:52:12,363 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-19 19:52:12,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:12,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-19 19:52:12,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2021-02-19 19:52:12,364 INFO L87 Difference]: Start difference. First operand 8944 states and 23159 transitions. Second operand has 28 states, 28 states have (on average 2.25) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:13,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:13,978 INFO L93 Difference]: Finished difference Result 10626 states and 26434 transitions. [2021-02-19 19:52:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-02-19 19:52:13,979 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.25) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:13,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:13,989 INFO L225 Difference]: With dead ends: 10626 [2021-02-19 19:52:13,989 INFO L226 Difference]: Without dead ends: 10527 [2021-02-19 19:52:13,989 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3285 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2020, Invalid=7486, Unknown=0, NotChecked=0, Total=9506 [2021-02-19 19:52:13,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10527 states. [2021-02-19 19:52:14,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10527 to 8656. [2021-02-19 19:52:14,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8656 states, 8655 states have (on average 2.577007510109763) internal successors, (22304), 8655 states have internal predecessors, (22304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:14,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8656 states to 8656 states and 22304 transitions. [2021-02-19 19:52:14,095 INFO L78 Accepts]: Start accepts. Automaton has 8656 states and 22304 transitions. Word has length 36 [2021-02-19 19:52:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:14,095 INFO L480 AbstractCegarLoop]: Abstraction has 8656 states and 22304 transitions. [2021-02-19 19:52:14,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.25) internal successors, (63), 27 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:14,095 INFO L276 IsEmpty]: Start isEmpty. Operand 8656 states and 22304 transitions. [2021-02-19 19:52:14,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:52:14,100 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:14,100 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:14,300 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable746,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:52:14,300 INFO L428 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:14,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:14,300 INFO L82 PathProgramCache]: Analyzing trace with hash -785643217, now seen corresponding path program 88 times [2021-02-19 19:52:14,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:14,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903236036] [2021-02-19 19:52:14,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 23 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:52:14,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903236036] [2021-02-19 19:52:14,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928550339] [2021-02-19 19:52:14,392 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 [2021-02-19 19:52:14,414 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:52:14,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:14,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:52:14,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:14,650 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:14,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:14,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2021-02-19 19:52:14,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032721401] [2021-02-19 19:52:14,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-19 19:52:14,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:14,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-19 19:52:14,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2021-02-19 19:52:14,651 INFO L87 Difference]: Start difference. First operand 8656 states and 22304 transitions. Second operand has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 27 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:16,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:16,305 INFO L93 Difference]: Finished difference Result 11669 states and 28734 transitions. [2021-02-19 19:52:16,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-02-19 19:52:16,305 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 27 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:16,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:16,315 INFO L225 Difference]: With dead ends: 11669 [2021-02-19 19:52:16,315 INFO L226 Difference]: Without dead ends: 11669 [2021-02-19 19:52:16,315 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2824 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2270, Invalid=6660, Unknown=0, NotChecked=0, Total=8930 [2021-02-19 19:52:16,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11669 states. [2021-02-19 19:52:16,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11669 to 7769. [2021-02-19 19:52:16,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7769 states, 7768 states have (on average 2.5607621009268797) internal successors, (19892), 7768 states have internal predecessors, (19892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:16,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7769 states to 7769 states and 19892 transitions. [2021-02-19 19:52:16,404 INFO L78 Accepts]: Start accepts. Automaton has 7769 states and 19892 transitions. Word has length 36 [2021-02-19 19:52:16,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:16,404 INFO L480 AbstractCegarLoop]: Abstraction has 7769 states and 19892 transitions. [2021-02-19 19:52:16,404 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 27 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:16,404 INFO L276 IsEmpty]: Start isEmpty. Operand 7769 states and 19892 transitions. [2021-02-19 19:52:16,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:52:16,408 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:16,408 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:16,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable747,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:52:16,608 INFO L428 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:16,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:16,609 INFO L82 PathProgramCache]: Analyzing trace with hash -2122702485, now seen corresponding path program 89 times [2021-02-19 19:52:16,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:16,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054906526] [2021-02-19 19:52:16,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 23 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:52:16,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054906526] [2021-02-19 19:52:16,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681835548] [2021-02-19 19:52:16,691 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 [2021-02-19 19:52:16,712 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-02-19 19:52:16,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:16,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:52:16,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:16,958 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:16,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:16,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2021-02-19 19:52:16,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206503416] [2021-02-19 19:52:16,958 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-19 19:52:16,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:16,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-19 19:52:16,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2021-02-19 19:52:16,959 INFO L87 Difference]: Start difference. First operand 7769 states and 19892 transitions. Second operand has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 26 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:18,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:18,390 INFO L93 Difference]: Finished difference Result 9358 states and 23204 transitions. [2021-02-19 19:52:18,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-02-19 19:52:18,390 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 26 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:18,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:18,399 INFO L225 Difference]: With dead ends: 9358 [2021-02-19 19:52:18,399 INFO L226 Difference]: Without dead ends: 9292 [2021-02-19 19:52:18,400 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2837 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1697, Invalid=6313, Unknown=0, NotChecked=0, Total=8010 [2021-02-19 19:52:18,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9292 states. [2021-02-19 19:52:18,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9292 to 7746. [2021-02-19 19:52:18,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7746 states, 7745 states have (on average 2.5536475145255) internal successors, (19778), 7745 states have internal predecessors, (19778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:18,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7746 states to 7746 states and 19778 transitions. [2021-02-19 19:52:18,495 INFO L78 Accepts]: Start accepts. Automaton has 7746 states and 19778 transitions. Word has length 36 [2021-02-19 19:52:18,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:18,495 INFO L480 AbstractCegarLoop]: Abstraction has 7746 states and 19778 transitions. [2021-02-19 19:52:18,496 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 26 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:18,496 INFO L276 IsEmpty]: Start isEmpty. Operand 7746 states and 19778 transitions. [2021-02-19 19:52:18,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:52:18,500 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:18,500 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:18,700 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable748,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:52:18,700 INFO L428 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:18,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:18,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1050213073, now seen corresponding path program 90 times [2021-02-19 19:52:18,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:18,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526738706] [2021-02-19 19:52:18,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:18,784 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:52:18,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526738706] [2021-02-19 19:52:18,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380789280] [2021-02-19 19:52:18,784 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 [2021-02-19 19:52:18,805 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-02-19 19:52:18,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:18,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:52:18,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:19,075 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:19,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:19,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2021-02-19 19:52:19,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456155283] [2021-02-19 19:52:19,076 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-19 19:52:19,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:19,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-19 19:52:19,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2021-02-19 19:52:19,076 INFO L87 Difference]: Start difference. First operand 7746 states and 19778 transitions. Second operand has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:20,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:20,923 INFO L93 Difference]: Finished difference Result 11275 states and 27529 transitions. [2021-02-19 19:52:20,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-02-19 19:52:20,923 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:20,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:20,934 INFO L225 Difference]: With dead ends: 11275 [2021-02-19 19:52:20,934 INFO L226 Difference]: Without dead ends: 11275 [2021-02-19 19:52:20,935 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3564 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2740, Invalid=7562, Unknown=0, NotChecked=0, Total=10302 [2021-02-19 19:52:20,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11275 states. [2021-02-19 19:52:21,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11275 to 7094. [2021-02-19 19:52:21,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7094 states, 7093 states have (on average 2.531791907514451) internal successors, (17958), 7093 states have internal predecessors, (17958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:21,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7094 states to 7094 states and 17958 transitions. [2021-02-19 19:52:21,036 INFO L78 Accepts]: Start accepts. Automaton has 7094 states and 17958 transitions. Word has length 36 [2021-02-19 19:52:21,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:21,037 INFO L480 AbstractCegarLoop]: Abstraction has 7094 states and 17958 transitions. [2021-02-19 19:52:21,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.4074074074074074) internal successors, (65), 26 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:21,037 INFO L276 IsEmpty]: Start isEmpty. Operand 7094 states and 17958 transitions. [2021-02-19 19:52:21,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:52:21,040 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:21,040 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:21,241 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable749,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:52:21,242 INFO L428 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:21,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:21,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1047135125, now seen corresponding path program 91 times [2021-02-19 19:52:21,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:21,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514386353] [2021-02-19 19:52:21,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 23 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:52:21,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514386353] [2021-02-19 19:52:21,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549218569] [2021-02-19 19:52:21,321 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 [2021-02-19 19:52:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:21,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:52:21,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:21,582 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:21,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:21,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 25 [2021-02-19 19:52:21,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010388885] [2021-02-19 19:52:21,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-19 19:52:21,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:21,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-19 19:52:21,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2021-02-19 19:52:21,583 INFO L87 Difference]: Start difference. First operand 7094 states and 17958 transitions. Second operand has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:22,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:22,996 INFO L93 Difference]: Finished difference Result 8391 states and 20772 transitions. [2021-02-19 19:52:22,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-02-19 19:52:22,997 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:22,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:23,005 INFO L225 Difference]: With dead ends: 8391 [2021-02-19 19:52:23,005 INFO L226 Difference]: Without dead ends: 8352 [2021-02-19 19:52:23,006 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2476 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1507, Invalid=5465, Unknown=0, NotChecked=0, Total=6972 [2021-02-19 19:52:23,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8352 states. [2021-02-19 19:52:23,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8352 to 7183. [2021-02-19 19:52:23,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7183 states, 7182 states have (on average 2.532442216652743) internal successors, (18188), 7182 states have internal predecessors, (18188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:23,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7183 states to 7183 states and 18188 transitions. [2021-02-19 19:52:23,090 INFO L78 Accepts]: Start accepts. Automaton has 7183 states and 18188 transitions. Word has length 36 [2021-02-19 19:52:23,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:23,090 INFO L480 AbstractCegarLoop]: Abstraction has 7183 states and 18188 transitions. [2021-02-19 19:52:23,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 25 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:23,091 INFO L276 IsEmpty]: Start isEmpty. Operand 7183 states and 18188 transitions. [2021-02-19 19:52:23,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:52:23,094 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:23,094 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:23,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable750 [2021-02-19 19:52:23,295 INFO L428 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:23,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:23,295 INFO L82 PathProgramCache]: Analyzing trace with hash 1009844527, now seen corresponding path program 92 times [2021-02-19 19:52:23,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:23,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340500672] [2021-02-19 19:52:23,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:52:23,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340500672] [2021-02-19 19:52:23,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000528784] [2021-02-19 19:52:23,375 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 [2021-02-19 19:52:23,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:52:23,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:23,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:52:23,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:23,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:23,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 25 [2021-02-19 19:52:23,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477985040] [2021-02-19 19:52:23,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-19 19:52:23,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:23,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-19 19:52:23,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2021-02-19 19:52:23,632 INFO L87 Difference]: Start difference. First operand 7183 states and 18188 transitions. Second operand has 26 states, 26 states have (on average 2.5) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:25,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:25,559 INFO L93 Difference]: Finished difference Result 11937 states and 29010 transitions. [2021-02-19 19:52:25,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-02-19 19:52:25,560 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:25,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:25,572 INFO L225 Difference]: With dead ends: 11937 [2021-02-19 19:52:25,572 INFO L226 Difference]: Without dead ends: 11937 [2021-02-19 19:52:25,573 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4334 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3216, Invalid=8340, Unknown=0, NotChecked=0, Total=11556 [2021-02-19 19:52:25,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11937 states. [2021-02-19 19:52:25,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11937 to 8770. [2021-02-19 19:52:25,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8770 states, 8769 states have (on average 2.5070133424563803) internal successors, (21984), 8769 states have internal predecessors, (21984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:25,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8770 states to 8770 states and 21984 transitions. [2021-02-19 19:52:25,694 INFO L78 Accepts]: Start accepts. Automaton has 8770 states and 21984 transitions. Word has length 36 [2021-02-19 19:52:25,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:25,694 INFO L480 AbstractCegarLoop]: Abstraction has 8770 states and 21984 transitions. [2021-02-19 19:52:25,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.5) internal successors, (65), 25 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:25,694 INFO L276 IsEmpty]: Start isEmpty. Operand 8770 states and 21984 transitions. [2021-02-19 19:52:25,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:52:25,698 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:25,698 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:25,899 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable751 [2021-02-19 19:52:25,899 INFO L428 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:25,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:25,899 INFO L82 PathProgramCache]: Analyzing trace with hash 2095880043, now seen corresponding path program 93 times [2021-02-19 19:52:25,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:25,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071320873] [2021-02-19 19:52:25,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:25,972 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 27 proven. 33 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:52:25,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071320873] [2021-02-19 19:52:25,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455185614] [2021-02-19 19:52:25,973 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 [2021-02-19 19:52:25,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-02-19 19:52:25,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:25,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:52:25,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 24 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:26,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:26,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2021-02-19 19:52:26,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093746217] [2021-02-19 19:52:26,236 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-19 19:52:26,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:26,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-19 19:52:26,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2021-02-19 19:52:26,236 INFO L87 Difference]: Start difference. First operand 8770 states and 21984 transitions. Second operand has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:27,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:27,515 INFO L93 Difference]: Finished difference Result 9544 states and 23558 transitions. [2021-02-19 19:52:27,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-02-19 19:52:27,516 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:27,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:27,525 INFO L225 Difference]: With dead ends: 9544 [2021-02-19 19:52:27,526 INFO L226 Difference]: Without dead ends: 9526 [2021-02-19 19:52:27,526 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2221 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1407, Invalid=4913, Unknown=0, NotChecked=0, Total=6320 [2021-02-19 19:52:27,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9526 states. [2021-02-19 19:52:27,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9526 to 8902. [2021-02-19 19:52:27,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8902 states, 8901 states have (on average 2.510055049994383) internal successors, (22342), 8901 states have internal predecessors, (22342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:27,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8902 states to 8902 states and 22342 transitions. [2021-02-19 19:52:27,626 INFO L78 Accepts]: Start accepts. Automaton has 8902 states and 22342 transitions. Word has length 36 [2021-02-19 19:52:27,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:27,627 INFO L480 AbstractCegarLoop]: Abstraction has 8902 states and 22342 transitions. [2021-02-19 19:52:27,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:27,627 INFO L276 IsEmpty]: Start isEmpty. Operand 8902 states and 22342 transitions. [2021-02-19 19:52:27,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:52:27,632 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:27,632 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:27,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable752 [2021-02-19 19:52:27,834 INFO L428 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:27,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:27,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1723204305, now seen corresponding path program 94 times [2021-02-19 19:52:27,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:27,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610287767] [2021-02-19 19:52:27,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:27,906 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:52:27,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610287767] [2021-02-19 19:52:27,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351703292] [2021-02-19 19:52:27,907 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 [2021-02-19 19:52:27,926 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:52:27,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:27,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:52:27,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:28,171 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:28,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:28,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2021-02-19 19:52:28,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012325977] [2021-02-19 19:52:28,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-19 19:52:28,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:28,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-19 19:52:28,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2021-02-19 19:52:28,172 INFO L87 Difference]: Start difference. First operand 8902 states and 22342 transitions. Second operand has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:30,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:30,125 INFO L93 Difference]: Finished difference Result 15319 states and 37889 transitions. [2021-02-19 19:52:30,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-02-19 19:52:30,125 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:30,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:30,142 INFO L225 Difference]: With dead ends: 15319 [2021-02-19 19:52:30,143 INFO L226 Difference]: Without dead ends: 15319 [2021-02-19 19:52:30,144 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4780 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3440, Invalid=8770, Unknown=0, NotChecked=0, Total=12210 [2021-02-19 19:52:30,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15319 states. [2021-02-19 19:52:30,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15319 to 13330. [2021-02-19 19:52:30,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13330 states, 13329 states have (on average 2.5292219971490733) internal successors, (33712), 13329 states have internal predecessors, (33712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:30,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13330 states to 13330 states and 33712 transitions. [2021-02-19 19:52:30,327 INFO L78 Accepts]: Start accepts. Automaton has 13330 states and 33712 transitions. Word has length 36 [2021-02-19 19:52:30,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:30,327 INFO L480 AbstractCegarLoop]: Abstraction has 13330 states and 33712 transitions. [2021-02-19 19:52:30,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.64) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:30,327 INFO L276 IsEmpty]: Start isEmpty. Operand 13330 states and 33712 transitions. [2021-02-19 19:52:30,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:52:30,334 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:30,334 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:30,534 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable753,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:52:30,535 INFO L428 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:30,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:30,535 INFO L82 PathProgramCache]: Analyzing trace with hash 625742357, now seen corresponding path program 95 times [2021-02-19 19:52:30,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:30,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614681133] [2021-02-19 19:52:30,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:30,600 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 31 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:52:30,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614681133] [2021-02-19 19:52:30,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984578806] [2021-02-19 19:52:30,601 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 [2021-02-19 19:52:30,622 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-02-19 19:52:30,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:30,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:52:30,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:30,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:30,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15] total 23 [2021-02-19 19:52:30,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59629480] [2021-02-19 19:52:30,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-02-19 19:52:30,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:30,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-02-19 19:52:30,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2021-02-19 19:52:30,858 INFO L87 Difference]: Start difference. First operand 13330 states and 33712 transitions. Second operand has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:32,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:32,098 INFO L93 Difference]: Finished difference Result 14924 states and 36958 transitions. [2021-02-19 19:52:32,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-02-19 19:52:32,098 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:32,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:32,116 INFO L225 Difference]: With dead ends: 14924 [2021-02-19 19:52:32,116 INFO L226 Difference]: Without dead ends: 14920 [2021-02-19 19:52:32,117 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2102 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1750, Invalid=4570, Unknown=0, NotChecked=0, Total=6320 [2021-02-19 19:52:32,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14920 states. [2021-02-19 19:52:32,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14920 to 13086. [2021-02-19 19:52:32,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13086 states, 13085 states have (on average 2.525792892625143) internal successors, (33050), 13085 states have internal predecessors, (33050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:32,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13086 states to 13086 states and 33050 transitions. [2021-02-19 19:52:32,310 INFO L78 Accepts]: Start accepts. Automaton has 13086 states and 33050 transitions. Word has length 36 [2021-02-19 19:52:32,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:32,310 INFO L480 AbstractCegarLoop]: Abstraction has 13086 states and 33050 transitions. [2021-02-19 19:52:32,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.5833333333333335) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:32,310 INFO L276 IsEmpty]: Start isEmpty. Operand 13086 states and 33050 transitions. [2021-02-19 19:52:32,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:52:32,317 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:32,317 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:32,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable754,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:52:32,517 INFO L428 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:32,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:32,518 INFO L82 PathProgramCache]: Analyzing trace with hash 119396091, now seen corresponding path program 96 times [2021-02-19 19:52:32,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:32,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867420477] [2021-02-19 19:52:32,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:32,598 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 26 proven. 34 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:52:32,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867420477] [2021-02-19 19:52:32,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207587686] [2021-02-19 19:52:32,598 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 [2021-02-19 19:52:32,619 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-02-19 19:52:32,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:32,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:52:32,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:32,852 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 23 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:32,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:32,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15] total 24 [2021-02-19 19:52:32,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808223397] [2021-02-19 19:52:32,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-02-19 19:52:32,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:32,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-02-19 19:52:32,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2021-02-19 19:52:32,853 INFO L87 Difference]: Start difference. First operand 13086 states and 33050 transitions. Second operand has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:34,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:34,034 INFO L93 Difference]: Finished difference Result 15282 states and 37884 transitions. [2021-02-19 19:52:34,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-02-19 19:52:34,035 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:34,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:34,051 INFO L225 Difference]: With dead ends: 15282 [2021-02-19 19:52:34,052 INFO L226 Difference]: Without dead ends: 15270 [2021-02-19 19:52:34,052 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2023 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1595, Invalid=4567, Unknown=0, NotChecked=0, Total=6162 [2021-02-19 19:52:34,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15270 states. [2021-02-19 19:52:34,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15270 to 13017. [2021-02-19 19:52:34,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13017 states, 13016 states have (on average 2.528272894898586) internal successors, (32908), 13016 states have internal predecessors, (32908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:34,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13017 states to 13017 states and 32908 transitions. [2021-02-19 19:52:34,276 INFO L78 Accepts]: Start accepts. Automaton has 13017 states and 32908 transitions. Word has length 36 [2021-02-19 19:52:34,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:34,276 INFO L480 AbstractCegarLoop]: Abstraction has 13017 states and 32908 transitions. [2021-02-19 19:52:34,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 24 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:34,276 INFO L276 IsEmpty]: Start isEmpty. Operand 13017 states and 32908 transitions. [2021-02-19 19:52:34,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:52:34,283 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:34,283 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:34,483 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable755 [2021-02-19 19:52:34,483 INFO L428 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:34,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:34,483 INFO L82 PathProgramCache]: Analyzing trace with hash -107825289, now seen corresponding path program 97 times [2021-02-19 19:52:34,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:34,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770842792] [2021-02-19 19:52:34,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:34,578 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:52:34,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770842792] [2021-02-19 19:52:34,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311922708] [2021-02-19 19:52:34,578 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 [2021-02-19 19:52:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:34,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:52:34,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:34,837 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:34,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:34,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 25 [2021-02-19 19:52:34,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183880286] [2021-02-19 19:52:34,838 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-02-19 19:52:34,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:34,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-02-19 19:52:34,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=536, Unknown=0, NotChecked=0, Total=650 [2021-02-19 19:52:34,838 INFO L87 Difference]: Start difference. First operand 13017 states and 32908 transitions. Second operand has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:36,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:36,070 INFO L93 Difference]: Finished difference Result 16039 states and 39737 transitions. [2021-02-19 19:52:36,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-02-19 19:52:36,070 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:36,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:36,088 INFO L225 Difference]: With dead ends: 16039 [2021-02-19 19:52:36,089 INFO L226 Difference]: Without dead ends: 16019 [2021-02-19 19:52:36,089 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2051 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1551, Invalid=4769, Unknown=0, NotChecked=0, Total=6320 [2021-02-19 19:52:36,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16019 states. [2021-02-19 19:52:36,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16019 to 13397. [2021-02-19 19:52:36,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13397 states, 13396 states have (on average 2.5326216781128696) internal successors, (33927), 13396 states have internal predecessors, (33927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:36,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13397 states to 13397 states and 33927 transitions. [2021-02-19 19:52:36,270 INFO L78 Accepts]: Start accepts. Automaton has 13397 states and 33927 transitions. Word has length 36 [2021-02-19 19:52:36,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:36,271 INFO L480 AbstractCegarLoop]: Abstraction has 13397 states and 33927 transitions. [2021-02-19 19:52:36,271 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.3846153846153846) internal successors, (62), 25 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:36,271 INFO L276 IsEmpty]: Start isEmpty. Operand 13397 states and 33927 transitions. [2021-02-19 19:52:36,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:52:36,277 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:36,277 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:36,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable756 [2021-02-19 19:52:36,478 INFO L428 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:36,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:36,478 INFO L82 PathProgramCache]: Analyzing trace with hash 575760627, now seen corresponding path program 98 times [2021-02-19 19:52:36,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:36,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024534678] [2021-02-19 19:52:36,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:36,569 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:52:36,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024534678] [2021-02-19 19:52:36,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080331316] [2021-02-19 19:52:36,569 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 [2021-02-19 19:52:36,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:52:36,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:36,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:52:36,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 19 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:36,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:36,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2021-02-19 19:52:36,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313480974] [2021-02-19 19:52:36,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-19 19:52:36,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:36,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-19 19:52:36,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=579, Unknown=0, NotChecked=0, Total=702 [2021-02-19 19:52:36,835 INFO L87 Difference]: Start difference. First operand 13397 states and 33927 transitions. Second operand has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:38,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:38,181 INFO L93 Difference]: Finished difference Result 17468 states and 43250 transitions. [2021-02-19 19:52:38,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-02-19 19:52:38,182 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:38,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:38,201 INFO L225 Difference]: With dead ends: 17468 [2021-02-19 19:52:38,201 INFO L226 Difference]: Without dead ends: 17440 [2021-02-19 19:52:38,201 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2204 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1619, Invalid=5187, Unknown=0, NotChecked=0, Total=6806 [2021-02-19 19:52:38,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17440 states. [2021-02-19 19:52:38,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17440 to 15583. [2021-02-19 19:52:38,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15583 states, 15582 states have (on average 2.5360672570915157) internal successors, (39517), 15582 states have internal predecessors, (39517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:38,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15583 states to 15583 states and 39517 transitions. [2021-02-19 19:52:38,426 INFO L78 Accepts]: Start accepts. Automaton has 15583 states and 39517 transitions. Word has length 36 [2021-02-19 19:52:38,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:38,426 INFO L480 AbstractCegarLoop]: Abstraction has 15583 states and 39517 transitions. [2021-02-19 19:52:38,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 26 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:38,427 INFO L276 IsEmpty]: Start isEmpty. Operand 15583 states and 39517 transitions. [2021-02-19 19:52:38,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:52:38,434 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:38,434 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:38,635 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable757,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:52:38,635 INFO L428 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:38,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:38,635 INFO L82 PathProgramCache]: Analyzing trace with hash 371829615, now seen corresponding path program 99 times [2021-02-19 19:52:38,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:38,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813537076] [2021-02-19 19:52:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:38,732 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 23 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:52:38,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813537076] [2021-02-19 19:52:38,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808819969] [2021-02-19 19:52:38,732 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 [2021-02-19 19:52:38,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-02-19 19:52:38,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:38,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:52:38,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:39,006 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 23 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:39,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:39,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 27 [2021-02-19 19:52:39,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483686070] [2021-02-19 19:52:39,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-19 19:52:39,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:39,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-19 19:52:39,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2021-02-19 19:52:39,007 INFO L87 Difference]: Start difference. First operand 15583 states and 39517 transitions. Second operand has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 27 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:40,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:40,443 INFO L93 Difference]: Finished difference Result 20026 states and 49571 transitions. [2021-02-19 19:52:40,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-02-19 19:52:40,444 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 27 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:40,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:40,465 INFO L225 Difference]: With dead ends: 20026 [2021-02-19 19:52:40,465 INFO L226 Difference]: Without dead ends: 19990 [2021-02-19 19:52:40,466 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2515 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1799, Invalid=5857, Unknown=0, NotChecked=0, Total=7656 [2021-02-19 19:52:40,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19990 states. [2021-02-19 19:52:40,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19990 to 17983. [2021-02-19 19:52:40,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17983 states, 17982 states have (on average 2.533644755866978) internal successors, (45560), 17982 states have internal predecessors, (45560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:40,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17983 states to 17983 states and 45560 transitions. [2021-02-19 19:52:40,737 INFO L78 Accepts]: Start accepts. Automaton has 17983 states and 45560 transitions. Word has length 36 [2021-02-19 19:52:40,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:40,737 INFO L480 AbstractCegarLoop]: Abstraction has 17983 states and 45560 transitions. [2021-02-19 19:52:40,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 27 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:40,737 INFO L276 IsEmpty]: Start isEmpty. Operand 17983 states and 45560 transitions. [2021-02-19 19:52:40,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-19 19:52:40,747 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:40,747 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:40,948 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable758 [2021-02-19 19:52:40,948 INFO L428 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:40,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:40,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1962622699, now seen corresponding path program 100 times [2021-02-19 19:52:40,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:40,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427518947] [2021-02-19 19:52:40,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:41,061 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 31 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:41,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427518947] [2021-02-19 19:52:41,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744492271] [2021-02-19 19:52:41,062 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 [2021-02-19 19:52:41,081 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:52:41,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:41,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-19 19:52:41,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 31 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:41,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:41,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-02-19 19:52:41,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96780427] [2021-02-19 19:52:41,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-02-19 19:52:41,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:41,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-02-19 19:52:41,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=659, Unknown=0, NotChecked=0, Total=812 [2021-02-19 19:52:41,346 INFO L87 Difference]: Start difference. First operand 17983 states and 45560 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 28 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:42,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:42,838 INFO L93 Difference]: Finished difference Result 19957 states and 49654 transitions. [2021-02-19 19:52:42,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-02-19 19:52:42,839 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 28 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-02-19 19:52:42,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:42,860 INFO L225 Difference]: With dead ends: 19957 [2021-02-19 19:52:42,860 INFO L226 Difference]: Without dead ends: 19913 [2021-02-19 19:52:42,861 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3033 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2089, Invalid=6841, Unknown=0, NotChecked=0, Total=8930 [2021-02-19 19:52:42,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19913 states. [2021-02-19 19:52:43,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19913 to 18106. [2021-02-19 19:52:43,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18106 states, 18105 states have (on average 2.5389671361502346) internal successors, (45968), 18105 states have internal predecessors, (45968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18106 states to 18106 states and 45968 transitions. [2021-02-19 19:52:43,146 INFO L78 Accepts]: Start accepts. Automaton has 18106 states and 45968 transitions. Word has length 36 [2021-02-19 19:52:43,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:43,146 INFO L480 AbstractCegarLoop]: Abstraction has 18106 states and 45968 transitions. [2021-02-19 19:52:43,146 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 28 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:43,146 INFO L276 IsEmpty]: Start isEmpty. Operand 18106 states and 45968 transitions. [2021-02-19 19:52:43,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-19 19:52:43,156 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:43,156 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:43,369 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable759,101 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:52:43,370 INFO L428 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:43,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:43,370 INFO L82 PathProgramCache]: Analyzing trace with hash -572419795, now seen corresponding path program 101 times [2021-02-19 19:52:43,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:43,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782688984] [2021-02-19 19:52:43,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:43,412 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:43,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782688984] [2021-02-19 19:52:43,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658311535] [2021-02-19 19:52:43,413 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:52:43,434 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-02-19 19:52:43,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:43,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 45 conjunts are in the unsatisfiable core [2021-02-19 19:52:43,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:43,711 INFO L354 Elim1Store]: treesize reduction 96, result has 43.2 percent of original size [2021-02-19 19:52:43,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 21 case distinctions, treesize of input 163 treesize of output 143 [2021-02-19 19:52:44,534 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:52:44,574 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:52:44,952 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:52:44,952 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:163, output treesize:285 [2021-02-19 19:52:45,716 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2021-02-19 19:52:47,516 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2021-02-19 19:52:49,887 WARN L202 SmtUtils]: Spent 984.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 48 [2021-02-19 19:52:50,172 INFO L354 Elim1Store]: treesize reduction 118, result has 2.5 percent of original size [2021-02-19 19:52:50,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 146 treesize of output 58 [2021-02-19 19:52:50,173 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:52:50,296 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 84 [2021-02-19 19:52:50,296 INFO L628 ElimStorePlain]: treesize reduction 454, result has 41.9 percent of original size [2021-02-19 19:52:50,352 INFO L354 Elim1Store]: treesize reduction 81, result has 33.1 percent of original size [2021-02-19 19:52:50,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 56 treesize of output 68 [2021-02-19 19:52:50,354 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:52:50,394 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:52:50,468 INFO L354 Elim1Store]: treesize reduction 60, result has 50.4 percent of original size [2021-02-19 19:52:50,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 102 [2021-02-19 19:52:50,471 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 19:52:50,482 INFO L628 ElimStorePlain]: treesize reduction 198, result has 1.5 percent of original size [2021-02-19 19:52:50,482 INFO L518 ElimStorePlain]: Eliminatee v_prenex_80 vanished before elimination [2021-02-19 19:52:50,482 INFO L518 ElimStorePlain]: Eliminatee v_prenex_79 vanished before elimination [2021-02-19 19:52:50,482 INFO L518 ElimStorePlain]: Eliminatee v_prenex_78 vanished before elimination [2021-02-19 19:52:50,483 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:52:50,483 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 12 variables, input treesize:920, output treesize:3 [2021-02-19 19:52:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:52:50,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:50,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 20 [2021-02-19 19:52:50,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759739393] [2021-02-19 19:52:50,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-19 19:52:50,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:50,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-19 19:52:50,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-02-19 19:52:50,499 INFO L87 Difference]: Start difference. First operand 18106 states and 45968 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:51,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:51,019 INFO L93 Difference]: Finished difference Result 20298 states and 51395 transitions. [2021-02-19 19:52:51,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-19 19:52:51,020 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-02-19 19:52:51,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:51,043 INFO L225 Difference]: With dead ends: 20298 [2021-02-19 19:52:51,043 INFO L226 Difference]: Without dead ends: 20291 [2021-02-19 19:52:51,043 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:52:51,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20291 states. [2021-02-19 19:52:51,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20291 to 19572. [2021-02-19 19:52:51,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19572 states, 19571 states have (on average 2.545552092381585) internal successors, (49819), 19571 states have internal predecessors, (49819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:51,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19572 states to 19572 states and 49819 transitions. [2021-02-19 19:52:51,392 INFO L78 Accepts]: Start accepts. Automaton has 19572 states and 49819 transitions. Word has length 38 [2021-02-19 19:52:51,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:51,392 INFO L480 AbstractCegarLoop]: Abstraction has 19572 states and 49819 transitions. [2021-02-19 19:52:51,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:51,392 INFO L276 IsEmpty]: Start isEmpty. Operand 19572 states and 49819 transitions. [2021-02-19 19:52:51,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-19 19:52:51,401 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:51,401 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:51,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable760 [2021-02-19 19:52:51,602 INFO L428 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:51,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:51,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1424218925, now seen corresponding path program 102 times [2021-02-19 19:52:51,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:51,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556697081] [2021-02-19 19:52:51,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:51,647 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:52:51,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556697081] [2021-02-19 19:52:51,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555263122] [2021-02-19 19:52:51,647 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:52:51,669 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-02-19 19:52:51,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:51,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 45 conjunts are in the unsatisfiable core [2021-02-19 19:52:51,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:51,937 INFO L446 ElimStorePlain]: Different costs {15=[f], 55=[f_inv]} [2021-02-19 19:52:52,010 INFO L354 Elim1Store]: treesize reduction 48, result has 60.3 percent of original size [2021-02-19 19:52:52,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 201 treesize of output 158 [2021-02-19 19:52:54,093 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:52:54,131 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:52:54,187 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:52:54,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 307 treesize of output 214 [2021-02-19 19:52:54,242 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:52:54,243 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:52:54,244 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:52:54,244 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:201, output treesize:3 [2021-02-19 19:52:54,258 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:52:54,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:54,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 20 [2021-02-19 19:52:54,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403448348] [2021-02-19 19:52:54,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-19 19:52:54,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:54,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-19 19:52:54,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-02-19 19:52:54,259 INFO L87 Difference]: Start difference. First operand 19572 states and 49819 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:54,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:54,500 INFO L93 Difference]: Finished difference Result 20658 states and 52485 transitions. [2021-02-19 19:52:54,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-19 19:52:54,500 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-02-19 19:52:54,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:54,523 INFO L225 Difference]: With dead ends: 20658 [2021-02-19 19:52:54,523 INFO L226 Difference]: Without dead ends: 20649 [2021-02-19 19:52:54,523 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-02-19 19:52:54,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20649 states. [2021-02-19 19:52:54,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20649 to 20358. [2021-02-19 19:52:54,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20358 states, 20357 states have (on average 2.5531758117600827) internal successors, (51975), 20357 states have internal predecessors, (51975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:54,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20358 states to 20358 states and 51975 transitions. [2021-02-19 19:52:54,787 INFO L78 Accepts]: Start accepts. Automaton has 20358 states and 51975 transitions. Word has length 38 [2021-02-19 19:52:54,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:54,787 INFO L480 AbstractCegarLoop]: Abstraction has 20358 states and 51975 transitions. [2021-02-19 19:52:54,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:54,787 INFO L276 IsEmpty]: Start isEmpty. Operand 20358 states and 51975 transitions. [2021-02-19 19:52:54,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-19 19:52:54,797 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:54,797 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:54,999 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1621,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:52:54,999 INFO L428 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:54,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:54,999 INFO L82 PathProgramCache]: Analyzing trace with hash 753361197, now seen corresponding path program 103 times [2021-02-19 19:52:54,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:54,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866727688] [2021-02-19 19:52:54,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:55,056 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:52:55,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866727688] [2021-02-19 19:52:55,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199486539] [2021-02-19 19:52:55,056 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:52:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:55,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 39 conjunts are in the unsatisfiable core [2021-02-19 19:52:55,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:55,436 WARN L202 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 59 [2021-02-19 19:52:55,437 INFO L354 Elim1Store]: treesize reduction 301, result has 33.0 percent of original size [2021-02-19 19:52:55,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 14 new quantified variables, introduced 36 case distinctions, treesize of input 158 treesize of output 200 [2021-02-19 19:52:55,440 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:52:55,478 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:52:55,479 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:52:55,479 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:158, output treesize:216 [2021-02-19 19:52:55,560 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2021-02-19 19:52:55,837 WARN L202 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 39 [2021-02-19 19:52:55,857 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_83], 6=[v_prenex_84], 10=[f], 15=[v_prenex_85]} [2021-02-19 19:52:55,870 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:52:55,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 19 treesize of output 37 [2021-02-19 19:52:55,872 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:52:55,879 INFO L628 ElimStorePlain]: treesize reduction 162, result has 1.8 percent of original size [2021-02-19 19:52:55,879 INFO L518 ElimStorePlain]: Eliminatee v_prenex_84 vanished before elimination [2021-02-19 19:52:55,879 INFO L518 ElimStorePlain]: Eliminatee f vanished before elimination [2021-02-19 19:52:55,879 INFO L518 ElimStorePlain]: Eliminatee v_prenex_85 vanished before elimination [2021-02-19 19:52:55,880 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:52:55,880 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:181, output treesize:3 [2021-02-19 19:52:55,894 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:52:55,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:55,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 20 [2021-02-19 19:52:55,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186234364] [2021-02-19 19:52:55,894 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-19 19:52:55,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:55,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-19 19:52:55,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-02-19 19:52:55,894 INFO L87 Difference]: Start difference. First operand 20358 states and 51975 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:56,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:56,175 INFO L93 Difference]: Finished difference Result 21714 states and 55240 transitions. [2021-02-19 19:52:56,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-19 19:52:56,175 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-02-19 19:52:56,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:56,199 INFO L225 Difference]: With dead ends: 21714 [2021-02-19 19:52:56,199 INFO L226 Difference]: Without dead ends: 21689 [2021-02-19 19:52:56,199 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-02-19 19:52:56,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21689 states. [2021-02-19 19:52:56,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21689 to 20898. [2021-02-19 19:52:56,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20898 states, 20897 states have (on average 2.5599368330382353) internal successors, (53495), 20897 states have internal predecessors, (53495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:56,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20898 states to 20898 states and 53495 transitions. [2021-02-19 19:52:56,454 INFO L78 Accepts]: Start accepts. Automaton has 20898 states and 53495 transitions. Word has length 38 [2021-02-19 19:52:56,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:56,454 INFO L480 AbstractCegarLoop]: Abstraction has 20898 states and 53495 transitions. [2021-02-19 19:52:56,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:56,454 INFO L276 IsEmpty]: Start isEmpty. Operand 20898 states and 53495 transitions. [2021-02-19 19:52:56,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-19 19:52:56,465 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:56,465 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:56,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2415 [2021-02-19 19:52:56,665 INFO L428 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:56,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:56,665 INFO L82 PathProgramCache]: Analyzing trace with hash 304178989, now seen corresponding path program 104 times [2021-02-19 19:52:56,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:56,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584502899] [2021-02-19 19:52:56,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:52:56,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584502899] [2021-02-19 19:52:56,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300445470] [2021-02-19 19:52:56,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:52:56,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:52:56,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:56,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 39 conjunts are in the unsatisfiable core [2021-02-19 19:52:56,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:56,986 INFO L354 Elim1Store]: treesize reduction 190, result has 38.5 percent of original size [2021-02-19 19:52:56,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 13 new quantified variables, introduced 28 case distinctions, treesize of input 160 treesize of output 167 [2021-02-19 19:52:56,989 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:52:57,027 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:52:57,028 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:52:57,028 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:160, output treesize:186 [2021-02-19 19:52:57,167 WARN L202 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2021-02-19 19:52:57,190 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2021-02-19 19:52:57,384 WARN L202 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 42 [2021-02-19 19:52:57,467 INFO L446 ElimStorePlain]: Different costs {3=[v_prenex_86], 6=[v_prenex_88], 10=[f], 15=[v_prenex_87]} [2021-02-19 19:52:57,480 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:52:57,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 19 treesize of output 37 [2021-02-19 19:52:57,482 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:52:57,489 INFO L628 ElimStorePlain]: treesize reduction 162, result has 1.8 percent of original size [2021-02-19 19:52:57,489 INFO L518 ElimStorePlain]: Eliminatee v_prenex_88 vanished before elimination [2021-02-19 19:52:57,489 INFO L518 ElimStorePlain]: Eliminatee f vanished before elimination [2021-02-19 19:52:57,489 INFO L518 ElimStorePlain]: Eliminatee v_prenex_87 vanished before elimination [2021-02-19 19:52:57,490 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:52:57,490 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:181, output treesize:3 [2021-02-19 19:52:57,504 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:52:57,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:57,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 20 [2021-02-19 19:52:57,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773036920] [2021-02-19 19:52:57,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-19 19:52:57,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:57,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-19 19:52:57,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-02-19 19:52:57,505 INFO L87 Difference]: Start difference. First operand 20898 states and 53495 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:57,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:57,778 INFO L93 Difference]: Finished difference Result 22481 states and 57375 transitions. [2021-02-19 19:52:57,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-19 19:52:57,779 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-02-19 19:52:57,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:57,803 INFO L225 Difference]: With dead ends: 22481 [2021-02-19 19:52:57,803 INFO L226 Difference]: Without dead ends: 22452 [2021-02-19 19:52:57,804 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-02-19 19:52:57,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22452 states. [2021-02-19 19:52:58,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22452 to 21528. [2021-02-19 19:52:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21528 states, 21527 states have (on average 2.5663585265016025) internal successors, (55246), 21527 states have internal predecessors, (55246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:58,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21528 states to 21528 states and 55246 transitions. [2021-02-19 19:52:58,105 INFO L78 Accepts]: Start accepts. Automaton has 21528 states and 55246 transitions. Word has length 38 [2021-02-19 19:52:58,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:52:58,105 INFO L480 AbstractCegarLoop]: Abstraction has 21528 states and 55246 transitions. [2021-02-19 19:52:58,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:58,105 INFO L276 IsEmpty]: Start isEmpty. Operand 21528 states and 55246 transitions. [2021-02-19 19:52:58,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-19 19:52:58,117 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:52:58,117 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:52:58,318 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2421 [2021-02-19 19:52:58,318 INFO L428 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:52:58,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:52:58,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1863193299, now seen corresponding path program 105 times [2021-02-19 19:52:58,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:52:58,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792501575] [2021-02-19 19:52:58,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:52:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:52:58,359 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:52:58,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792501575] [2021-02-19 19:52:58,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908507141] [2021-02-19 19:52:58,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:52:58,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-02-19 19:52:58,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:52:58,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 47 conjunts are in the unsatisfiable core [2021-02-19 19:52:58,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:52:58,689 INFO L446 ElimStorePlain]: Different costs {28=[f_inv], 36=[f]} [2021-02-19 19:52:58,784 INFO L354 Elim1Store]: treesize reduction 171, result has 36.0 percent of original size [2021-02-19 19:52:58,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 213 treesize of output 170 [2021-02-19 19:52:59,169 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:52:59,210 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:52:59,344 WARN L202 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-02-19 19:52:59,344 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:52:59,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 231 treesize of output 211 [2021-02-19 19:52:59,562 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:52:59,566 INFO L628 ElimStorePlain]: treesize reduction 9, result has 25.0 percent of original size [2021-02-19 19:52:59,566 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:52:59,566 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:213, output treesize:3 [2021-02-19 19:52:59,580 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:52:59,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:52:59,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 20 [2021-02-19 19:52:59,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442611952] [2021-02-19 19:52:59,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-19 19:52:59,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:52:59,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-19 19:52:59,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-02-19 19:52:59,581 INFO L87 Difference]: Start difference. First operand 21528 states and 55246 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:52:59,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:52:59,812 INFO L93 Difference]: Finished difference Result 23080 states and 59124 transitions. [2021-02-19 19:52:59,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-19 19:52:59,812 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-02-19 19:52:59,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:52:59,838 INFO L225 Difference]: With dead ends: 23080 [2021-02-19 19:52:59,838 INFO L226 Difference]: Without dead ends: 23054 [2021-02-19 19:52:59,838 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-02-19 19:52:59,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23054 states. [2021-02-19 19:53:00,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23054 to 22204. [2021-02-19 19:53:00,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22204 states, 22203 states have (on average 2.572535242985182) internal successors, (57118), 22203 states have internal predecessors, (57118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:00,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22204 states to 22204 states and 57118 transitions. [2021-02-19 19:53:00,157 INFO L78 Accepts]: Start accepts. Automaton has 22204 states and 57118 transitions. Word has length 38 [2021-02-19 19:53:00,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:53:00,157 INFO L480 AbstractCegarLoop]: Abstraction has 22204 states and 57118 transitions. [2021-02-19 19:53:00,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:00,158 INFO L276 IsEmpty]: Start isEmpty. Operand 22204 states and 57118 transitions. [2021-02-19 19:53:00,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-19 19:53:00,170 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:53:00,170 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:53:00,370 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2433 [2021-02-19 19:53:00,371 INFO L428 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:53:00,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:53:00,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1648823507, now seen corresponding path program 106 times [2021-02-19 19:53:00,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:53:00,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596865312] [2021-02-19 19:53:00,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:53:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:53:00,419 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:53:00,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596865312] [2021-02-19 19:53:00,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703632035] [2021-02-19 19:53:00,420 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 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 [2021-02-19 19:53:00,441 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:53:00,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:53:00,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 39 conjunts are in the unsatisfiable core [2021-02-19 19:53:00,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:53:00,636 INFO L354 Elim1Store]: treesize reduction 48, result has 63.4 percent of original size [2021-02-19 19:53:00,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 140 treesize of output 129 [2021-02-19 19:53:00,639 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:53:00,679 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:53:00,680 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:53:00,680 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:140, output treesize:284 [2021-02-19 19:53:01,200 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2021-02-19 19:53:03,342 WARN L202 SmtUtils]: Spent 993.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 48 [2021-02-19 19:53:03,990 INFO L446 ElimStorePlain]: Different costs {10=[v_prenex_100], 15=[f, v_prenex_101, v_prenex_99, v_prenex_102, v_prenex_103]} [2021-02-19 19:53:03,999 INFO L354 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2021-02-19 19:53:03,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 160 treesize of output 46 [2021-02-19 19:53:04,001 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:53:04,134 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 81 [2021-02-19 19:53:04,134 INFO L628 ElimStorePlain]: treesize reduction 447, result has 42.9 percent of original size [2021-02-19 19:53:04,215 INFO L354 Elim1Store]: treesize reduction 60, result has 50.4 percent of original size [2021-02-19 19:53:04,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 87 treesize of output 99 [2021-02-19 19:53:04,222 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:53:04,263 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:53:04,286 INFO L354 Elim1Store]: treesize reduction 74, result has 8.6 percent of original size [2021-02-19 19:53:04,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 71 treesize of output 35 [2021-02-19 19:53:04,288 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 19:53:04,322 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:53:04,370 INFO L354 Elim1Store]: treesize reduction 44, result has 45.7 percent of original size [2021-02-19 19:53:04,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 62 [2021-02-19 19:53:04,380 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 19:53:04,410 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:53:04,438 INFO L354 Elim1Store]: treesize reduction 66, result has 18.5 percent of original size [2021-02-19 19:53:04,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 52 treesize of output 40 [2021-02-19 19:53:04,440 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 19:53:04,465 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:53:04,498 INFO L354 Elim1Store]: treesize reduction 57, result has 29.6 percent of original size [2021-02-19 19:53:04,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 58 treesize of output 49 [2021-02-19 19:53:04,500 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 19:53:04,521 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:53:04,524 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:53:04,524 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 12 variables, input treesize:936, output treesize:3 [2021-02-19 19:53:04,552 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:53:04,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:53:04,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 20 [2021-02-19 19:53:04,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591314651] [2021-02-19 19:53:04,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-19 19:53:04,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:53:04,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-19 19:53:04,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-02-19 19:53:04,553 INFO L87 Difference]: Start difference. First operand 22204 states and 57118 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:05,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:53:05,201 INFO L93 Difference]: Finished difference Result 23947 states and 61327 transitions. [2021-02-19 19:53:05,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-19 19:53:05,201 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-02-19 19:53:05,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:53:05,230 INFO L225 Difference]: With dead ends: 23947 [2021-02-19 19:53:05,230 INFO L226 Difference]: Without dead ends: 23910 [2021-02-19 19:53:05,230 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-02-19 19:53:05,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23910 states. [2021-02-19 19:53:05,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23910 to 22942. [2021-02-19 19:53:05,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22942 states, 22941 states have (on average 2.580489080685236) internal successors, (59199), 22941 states have internal predecessors, (59199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:05,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22942 states to 22942 states and 59199 transitions. [2021-02-19 19:53:05,555 INFO L78 Accepts]: Start accepts. Automaton has 22942 states and 59199 transitions. Word has length 38 [2021-02-19 19:53:05,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:53:05,555 INFO L480 AbstractCegarLoop]: Abstraction has 22942 states and 59199 transitions. [2021-02-19 19:53:05,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:05,555 INFO L276 IsEmpty]: Start isEmpty. Operand 22942 states and 59199 transitions. [2021-02-19 19:53:05,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-19 19:53:05,568 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:53:05,568 INFO L506 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:53:05,768 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2682,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:53:05,768 INFO L428 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:53:05,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:53:05,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1797883603, now seen corresponding path program 107 times [2021-02-19 19:53:05,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:53:05,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043372298] [2021-02-19 19:53:05,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:53:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:53:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:53:05,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043372298] [2021-02-19 19:53:05,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065319369] [2021-02-19 19:53:05,820 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 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 [2021-02-19 19:53:05,842 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-02-19 19:53:05,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:53:05,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 45 conjunts are in the unsatisfiable core [2021-02-19 19:53:05,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:53:06,118 INFO L354 Elim1Store]: treesize reduction 96, result has 43.2 percent of original size [2021-02-19 19:53:06,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 21 case distinctions, treesize of input 163 treesize of output 143 [2021-02-19 19:53:06,935 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:53:06,976 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:53:07,349 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:53:07,349 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:163, output treesize:285 [2021-02-19 19:53:08,115 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2021-02-19 19:53:08,241 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 181 [2021-02-19 19:53:09,782 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 [2021-02-19 19:53:11,946 WARN L202 SmtUtils]: Spent 945.00 ms on a formula simplification. DAG size of input: 324 DAG size of output: 48 [2021-02-19 19:53:12,264 INFO L354 Elim1Store]: treesize reduction 101, result has 16.5 percent of original size [2021-02-19 19:53:12,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 156 treesize of output 76 [2021-02-19 19:53:12,267 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:53:12,393 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 85 [2021-02-19 19:53:12,393 INFO L628 ElimStorePlain]: treesize reduction 442, result has 42.7 percent of original size [2021-02-19 19:53:12,426 INFO L354 Elim1Store]: treesize reduction 108, result has 10.7 percent of original size [2021-02-19 19:53:12,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 55 treesize of output 40 [2021-02-19 19:53:12,427 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:53:12,467 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:53:12,503 INFO L354 Elim1Store]: treesize reduction 103, result has 14.9 percent of original size [2021-02-19 19:53:12,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 56 treesize of output 46 [2021-02-19 19:53:12,505 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 19:53:12,541 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:53:12,570 INFO L354 Elim1Store]: treesize reduction 111, result has 8.3 percent of original size [2021-02-19 19:53:12,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 75 treesize of output 41 [2021-02-19 19:53:12,571 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 19:53:12,603 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:53:12,678 INFO L354 Elim1Store]: treesize reduction 60, result has 50.4 percent of original size [2021-02-19 19:53:12,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 81 treesize of output 102 [2021-02-19 19:53:12,681 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 19:53:12,692 INFO L628 ElimStorePlain]: treesize reduction 84, result has 3.4 percent of original size [2021-02-19 19:53:12,692 INFO L518 ElimStorePlain]: Eliminatee v_prenex_117 vanished before elimination [2021-02-19 19:53:12,692 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:53:12,692 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 12 variables, input treesize:920, output treesize:3 [2021-02-19 19:53:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:53:12,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:53:12,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14] total 20 [2021-02-19 19:53:12,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315763734] [2021-02-19 19:53:12,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-02-19 19:53:12,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:53:12,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-02-19 19:53:12,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-02-19 19:53:12,712 INFO L87 Difference]: Start difference. First operand 22942 states and 59199 transitions. Second operand has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:13,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:53:13,322 INFO L93 Difference]: Finished difference Result 24000 states and 61703 transitions. [2021-02-19 19:53:13,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-19 19:53:13,323 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-02-19 19:53:13,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:53:13,350 INFO L225 Difference]: With dead ends: 24000 [2021-02-19 19:53:13,350 INFO L226 Difference]: Without dead ends: 23993 [2021-02-19 19:53:13,350 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:53:13,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23993 states. [2021-02-19 19:53:13,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23993 to 23411. [2021-02-19 19:53:13,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23411 states, 23410 states have (on average 2.5850918410935497) internal successors, (60517), 23410 states have internal predecessors, (60517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:13,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23411 states to 23411 states and 60517 transitions. [2021-02-19 19:53:13,650 INFO L78 Accepts]: Start accepts. Automaton has 23411 states and 60517 transitions. Word has length 38 [2021-02-19 19:53:13,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:53:13,651 INFO L480 AbstractCegarLoop]: Abstraction has 23411 states and 60517 transitions. [2021-02-19 19:53:13,651 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 3.0) internal successors, (60), 20 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:13,651 INFO L276 IsEmpty]: Start isEmpty. Operand 23411 states and 60517 transitions. [2021-02-19 19:53:13,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:53:13,665 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:53:13,665 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:53:13,880 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2830 [2021-02-19 19:53:13,880 INFO L428 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:53:13,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:53:13,880 INFO L82 PathProgramCache]: Analyzing trace with hash -76673425, now seen corresponding path program 108 times [2021-02-19 19:53:13,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:53:13,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795587311] [2021-02-19 19:53:13,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:53:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:53:14,029 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:14,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795587311] [2021-02-19 19:53:14,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121489433] [2021-02-19 19:53:14,029 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 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 [2021-02-19 19:53:14,052 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-02-19 19:53:14,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:53:14,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:53:14,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:53:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:14,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:53:14,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33 [2021-02-19 19:53:14,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180484999] [2021-02-19 19:53:14,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-02-19 19:53:14,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:53:14,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-02-19 19:53:14,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=908, Unknown=0, NotChecked=0, Total=1122 [2021-02-19 19:53:14,373 INFO L87 Difference]: Start difference. First operand 23411 states and 60517 transitions. Second operand has 34 states, 34 states have (on average 2.176470588235294) internal successors, (74), 33 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:16,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:53:16,554 INFO L93 Difference]: Finished difference Result 25898 states and 65777 transitions. [2021-02-19 19:53:16,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-02-19 19:53:16,555 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.176470588235294) internal successors, (74), 33 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:53:16,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:53:16,586 INFO L225 Difference]: With dead ends: 25898 [2021-02-19 19:53:16,586 INFO L226 Difference]: Without dead ends: 25898 [2021-02-19 19:53:16,587 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3673 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3180, Invalid=9030, Unknown=0, NotChecked=0, Total=12210 [2021-02-19 19:53:16,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25898 states. [2021-02-19 19:53:16,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25898 to 21896. [2021-02-19 19:53:16,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21896 states, 21895 states have (on average 2.5780771865722767) internal successors, (56447), 21895 states have internal predecessors, (56447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:16,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21896 states to 21896 states and 56447 transitions. [2021-02-19 19:53:16,880 INFO L78 Accepts]: Start accepts. Automaton has 21896 states and 56447 transitions. Word has length 40 [2021-02-19 19:53:16,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:53:16,880 INFO L480 AbstractCegarLoop]: Abstraction has 21896 states and 56447 transitions. [2021-02-19 19:53:16,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.176470588235294) internal successors, (74), 33 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:16,880 INFO L276 IsEmpty]: Start isEmpty. Operand 21896 states and 56447 transitions. [2021-02-19 19:53:16,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:53:16,894 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:53:16,894 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:53:17,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3691,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:53:17,094 INFO L428 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:53:17,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:53:17,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1262483029, now seen corresponding path program 109 times [2021-02-19 19:53:17,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:53:17,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629253818] [2021-02-19 19:53:17,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:53:17,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:53:17,231 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:17,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629253818] [2021-02-19 19:53:17,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065506725] [2021-02-19 19:53:17,231 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 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 [2021-02-19 19:53:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:53:17,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:53:17,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:53:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:17,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:53:17,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-02-19 19:53:17,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547024575] [2021-02-19 19:53:17,591 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-02-19 19:53:17,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:53:17,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-02-19 19:53:17,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2021-02-19 19:53:17,592 INFO L87 Difference]: Start difference. First operand 21896 states and 56447 transitions. Second operand has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 32 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:21,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:53:21,084 INFO L93 Difference]: Finished difference Result 30410 states and 76384 transitions. [2021-02-19 19:53:21,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2021-02-19 19:53:21,085 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 32 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:53:21,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:53:21,125 INFO L225 Difference]: With dead ends: 30410 [2021-02-19 19:53:21,125 INFO L226 Difference]: Without dead ends: 30222 [2021-02-19 19:53:21,127 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7844 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4727, Invalid=17923, Unknown=0, NotChecked=0, Total=22650 [2021-02-19 19:53:21,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30222 states. [2021-02-19 19:53:21,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30222 to 22632. [2021-02-19 19:53:21,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22632 states, 22631 states have (on average 2.5780124607838806) internal successors, (58343), 22631 states have internal predecessors, (58343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22632 states to 22632 states and 58343 transitions. [2021-02-19 19:53:21,580 INFO L78 Accepts]: Start accepts. Automaton has 22632 states and 58343 transitions. Word has length 40 [2021-02-19 19:53:21,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:53:21,581 INFO L480 AbstractCegarLoop]: Abstraction has 22632 states and 58343 transitions. [2021-02-19 19:53:21,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.1818181818181817) internal successors, (72), 32 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:21,581 INFO L276 IsEmpty]: Start isEmpty. Operand 22632 states and 58343 transitions. [2021-02-19 19:53:21,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:53:21,596 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:53:21,596 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:53:21,796 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3692 [2021-02-19 19:53:21,796 INFO L428 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:53:21,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:53:21,796 INFO L82 PathProgramCache]: Analyzing trace with hash -754715697, now seen corresponding path program 110 times [2021-02-19 19:53:21,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:53:21,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301722533] [2021-02-19 19:53:21,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:53:21,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:53:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:21,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301722533] [2021-02-19 19:53:21,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838234846] [2021-02-19 19:53:21,895 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 [2021-02-19 19:53:21,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:53:21,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:53:21,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:53:21,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:53:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:22,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:53:22,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 26 [2021-02-19 19:53:22,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990650540] [2021-02-19 19:53:22,221 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-19 19:53:22,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:53:22,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-19 19:53:22,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2021-02-19 19:53:22,222 INFO L87 Difference]: Start difference. First operand 22632 states and 58343 transitions. Second operand has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 26 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:25,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:53:25,092 INFO L93 Difference]: Finished difference Result 39864 states and 101563 transitions. [2021-02-19 19:53:25,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-02-19 19:53:25,093 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 26 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:53:25,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:53:25,142 INFO L225 Difference]: With dead ends: 39864 [2021-02-19 19:53:25,142 INFO L226 Difference]: Without dead ends: 39844 [2021-02-19 19:53:25,143 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6651 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4595, Invalid=12961, Unknown=0, NotChecked=0, Total=17556 [2021-02-19 19:53:25,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39844 states. [2021-02-19 19:53:25,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39844 to 29497. [2021-02-19 19:53:25,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29497 states, 29496 states have (on average 2.577230810957418) internal successors, (76018), 29496 states have internal predecessors, (76018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:25,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29497 states to 29497 states and 76018 transitions. [2021-02-19 19:53:25,634 INFO L78 Accepts]: Start accepts. Automaton has 29497 states and 76018 transitions. Word has length 40 [2021-02-19 19:53:25,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:53:25,634 INFO L480 AbstractCegarLoop]: Abstraction has 29497 states and 76018 transitions. [2021-02-19 19:53:25,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 26 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:25,634 INFO L276 IsEmpty]: Start isEmpty. Operand 29497 states and 76018 transitions. [2021-02-19 19:53:25,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:53:25,649 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:53:25,649 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:53:25,849 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3693 [2021-02-19 19:53:25,850 INFO L428 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:53:25,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:53:25,850 INFO L82 PathProgramCache]: Analyzing trace with hash -2138613779, now seen corresponding path program 111 times [2021-02-19 19:53:25,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:53:25,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762327329] [2021-02-19 19:53:25,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:53:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:53:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 43 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:25,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762327329] [2021-02-19 19:53:25,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856509973] [2021-02-19 19:53:25,932 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 [2021-02-19 19:53:25,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-02-19 19:53:25,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:53:25,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:53:25,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:53:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 43 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:26,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:53:26,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 26 [2021-02-19 19:53:26,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002001090] [2021-02-19 19:53:26,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-19 19:53:26,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:53:26,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-19 19:53:26,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=544, Unknown=0, NotChecked=0, Total=702 [2021-02-19 19:53:26,298 INFO L87 Difference]: Start difference. First operand 29497 states and 76018 transitions. Second operand has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 26 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:28,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:53:28,310 INFO L93 Difference]: Finished difference Result 30394 states and 77833 transitions. [2021-02-19 19:53:28,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-02-19 19:53:28,311 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 26 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:53:28,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:53:28,348 INFO L225 Difference]: With dead ends: 30394 [2021-02-19 19:53:28,348 INFO L226 Difference]: Without dead ends: 30390 [2021-02-19 19:53:28,349 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3712 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2606, Invalid=8314, Unknown=0, NotChecked=0, Total=10920 [2021-02-19 19:53:28,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30390 states. [2021-02-19 19:53:28,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30390 to 29497. [2021-02-19 19:53:28,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29497 states, 29496 states have (on average 2.5766883645240033) internal successors, (76002), 29496 states have internal predecessors, (76002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:28,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29497 states to 29497 states and 76002 transitions. [2021-02-19 19:53:28,796 INFO L78 Accepts]: Start accepts. Automaton has 29497 states and 76002 transitions. Word has length 40 [2021-02-19 19:53:28,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:53:28,796 INFO L480 AbstractCegarLoop]: Abstraction has 29497 states and 76002 transitions. [2021-02-19 19:53:28,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 26 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:28,796 INFO L276 IsEmpty]: Start isEmpty. Operand 29497 states and 76002 transitions. [2021-02-19 19:53:28,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:53:28,811 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:53:28,811 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:53:29,011 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3694 [2021-02-19 19:53:29,011 INFO L428 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:53:29,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:53:29,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1951912875, now seen corresponding path program 112 times [2021-02-19 19:53:29,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:53:29,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039899600] [2021-02-19 19:53:29,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:53:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:53:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 53 proven. 31 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:53:29,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039899600] [2021-02-19 19:53:29,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706308275] [2021-02-19 19:53:29,098 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 [2021-02-19 19:53:29,118 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:53:29,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:53:29,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:53:29,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:53:29,414 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 43 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:29,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:53:29,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 26 [2021-02-19 19:53:29,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937526752] [2021-02-19 19:53:29,415 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-19 19:53:29,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:53:29,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-19 19:53:29,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2021-02-19 19:53:29,415 INFO L87 Difference]: Start difference. First operand 29497 states and 76002 transitions. Second operand has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:30,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:53:30,929 INFO L93 Difference]: Finished difference Result 37584 states and 96225 transitions. [2021-02-19 19:53:30,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-02-19 19:53:30,930 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:53:30,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:53:30,980 INFO L225 Difference]: With dead ends: 37584 [2021-02-19 19:53:30,980 INFO L226 Difference]: Without dead ends: 37560 [2021-02-19 19:53:30,981 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2330 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1833, Invalid=5649, Unknown=0, NotChecked=0, Total=7482 [2021-02-19 19:53:31,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37560 states. [2021-02-19 19:53:31,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37560 to 29719. [2021-02-19 19:53:31,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29719 states, 29718 states have (on average 2.5852345379904436) internal successors, (76828), 29718 states have internal predecessors, (76828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:31,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29719 states to 29719 states and 76828 transitions. [2021-02-19 19:53:31,458 INFO L78 Accepts]: Start accepts. Automaton has 29719 states and 76828 transitions. Word has length 40 [2021-02-19 19:53:31,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:53:31,458 INFO L480 AbstractCegarLoop]: Abstraction has 29719 states and 76828 transitions. [2021-02-19 19:53:31,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 26 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:31,458 INFO L276 IsEmpty]: Start isEmpty. Operand 29719 states and 76828 transitions. [2021-02-19 19:53:31,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:53:31,472 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:53:31,472 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:53:31,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3695,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:53:31,673 INFO L428 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:53:31,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:53:31,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1203259333, now seen corresponding path program 113 times [2021-02-19 19:53:31,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:53:31,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135633186] [2021-02-19 19:53:31,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:53:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:53:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 38 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:31,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135633186] [2021-02-19 19:53:31,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614290487] [2021-02-19 19:53:31,762 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:53:31,904 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-02-19 19:53:31,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:53:31,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:53:31,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:53:32,240 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 38 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:32,240 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:53:32,240 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 27 [2021-02-19 19:53:32,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4620996] [2021-02-19 19:53:32,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-19 19:53:32,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:53:32,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-19 19:53:32,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2021-02-19 19:53:32,241 INFO L87 Difference]: Start difference. First operand 29719 states and 76828 transitions. Second operand has 28 states, 28 states have (on average 2.5) internal successors, (70), 27 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:34,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:53:34,519 INFO L93 Difference]: Finished difference Result 32131 states and 82168 transitions. [2021-02-19 19:53:34,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-02-19 19:53:34,520 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5) internal successors, (70), 27 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:53:34,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:53:34,560 INFO L225 Difference]: With dead ends: 32131 [2021-02-19 19:53:34,560 INFO L226 Difference]: Without dead ends: 32111 [2021-02-19 19:53:34,561 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3894 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2672, Invalid=8670, Unknown=0, NotChecked=0, Total=11342 [2021-02-19 19:53:34,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32111 states. [2021-02-19 19:53:34,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32111 to 30307. [2021-02-19 19:53:34,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30307 states, 30306 states have (on average 2.587045469543985) internal successors, (78403), 30306 states have internal predecessors, (78403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:34,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30307 states to 30307 states and 78403 transitions. [2021-02-19 19:53:34,999 INFO L78 Accepts]: Start accepts. Automaton has 30307 states and 78403 transitions. Word has length 40 [2021-02-19 19:53:35,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:53:35,000 INFO L480 AbstractCegarLoop]: Abstraction has 30307 states and 78403 transitions. [2021-02-19 19:53:35,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.5) internal successors, (70), 27 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:35,000 INFO L276 IsEmpty]: Start isEmpty. Operand 30307 states and 78403 transitions. [2021-02-19 19:53:35,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:53:35,015 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:53:35,015 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:53:35,215 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3696,114 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:53:35,215 INFO L428 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:53:35,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:53:35,216 INFO L82 PathProgramCache]: Analyzing trace with hash -1879662921, now seen corresponding path program 114 times [2021-02-19 19:53:35,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:53:35,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871617980] [2021-02-19 19:53:35,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:53:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:53:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 31 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:35,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871617980] [2021-02-19 19:53:35,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472179982] [2021-02-19 19:53:35,307 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:53:35,331 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-02-19 19:53:35,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:53:35,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:53:35,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:53:35,642 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 31 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:35,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:53:35,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 28 [2021-02-19 19:53:35,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379433737] [2021-02-19 19:53:35,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-02-19 19:53:35,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:53:35,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-02-19 19:53:35,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2021-02-19 19:53:35,643 INFO L87 Difference]: Start difference. First operand 30307 states and 78403 transitions. Second operand has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:37,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:53:37,810 INFO L93 Difference]: Finished difference Result 33401 states and 85130 transitions. [2021-02-19 19:53:37,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-02-19 19:53:37,811 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:53:37,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:53:37,852 INFO L225 Difference]: With dead ends: 33401 [2021-02-19 19:53:37,852 INFO L226 Difference]: Without dead ends: 33361 [2021-02-19 19:53:37,853 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4153 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2749, Invalid=9023, Unknown=0, NotChecked=0, Total=11772 [2021-02-19 19:53:37,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33361 states. [2021-02-19 19:53:38,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33361 to 30181. [2021-02-19 19:53:38,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30181 states, 30180 states have (on average 2.591186216037111) internal successors, (78202), 30180 states have internal predecessors, (78202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:38,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30181 states to 30181 states and 78202 transitions. [2021-02-19 19:53:38,296 INFO L78 Accepts]: Start accepts. Automaton has 30181 states and 78202 transitions. Word has length 40 [2021-02-19 19:53:38,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:53:38,296 INFO L480 AbstractCegarLoop]: Abstraction has 30181 states and 78202 transitions. [2021-02-19 19:53:38,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:38,296 INFO L276 IsEmpty]: Start isEmpty. Operand 30181 states and 78202 transitions. [2021-02-19 19:53:38,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:53:38,311 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:53:38,311 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:53:38,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3697,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:53:38,513 INFO L428 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:53:38,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:53:38,513 INFO L82 PathProgramCache]: Analyzing trace with hash 931518003, now seen corresponding path program 115 times [2021-02-19 19:53:38,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:53:38,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765139113] [2021-02-19 19:53:38,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:53:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:53:38,613 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:38,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765139113] [2021-02-19 19:53:38,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218131736] [2021-02-19 19:53:38,614 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:53:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:53:38,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:53:38,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:53:38,956 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:38,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:53:38,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 29 [2021-02-19 19:53:38,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742972170] [2021-02-19 19:53:38,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-02-19 19:53:38,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:53:38,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-02-19 19:53:38,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=712, Unknown=0, NotChecked=0, Total=870 [2021-02-19 19:53:38,957 INFO L87 Difference]: Start difference. First operand 30181 states and 78202 transitions. Second operand has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:41,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:53:41,065 INFO L93 Difference]: Finished difference Result 33916 states and 86143 transitions. [2021-02-19 19:53:41,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-02-19 19:53:41,066 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:53:41,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:53:41,108 INFO L225 Difference]: With dead ends: 33916 [2021-02-19 19:53:41,108 INFO L226 Difference]: Without dead ends: 33862 [2021-02-19 19:53:41,109 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4387 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2836, Invalid=9374, Unknown=0, NotChecked=0, Total=12210 [2021-02-19 19:53:41,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33862 states. [2021-02-19 19:53:41,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33862 to 28876. [2021-02-19 19:53:41,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28876 states, 28875 states have (on average 2.596987012987013) internal successors, (74988), 28875 states have internal predecessors, (74988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:41,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28876 states to 28876 states and 74988 transitions. [2021-02-19 19:53:41,563 INFO L78 Accepts]: Start accepts. Automaton has 28876 states and 74988 transitions. Word has length 40 [2021-02-19 19:53:41,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:53:41,563 INFO L480 AbstractCegarLoop]: Abstraction has 28876 states and 74988 transitions. [2021-02-19 19:53:41,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:41,563 INFO L276 IsEmpty]: Start isEmpty. Operand 28876 states and 74988 transitions. [2021-02-19 19:53:41,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:53:41,579 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:53:41,579 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:53:41,780 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3698,116 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:53:41,780 INFO L428 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:53:41,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:53:41,780 INFO L82 PathProgramCache]: Analyzing trace with hash 941956783, now seen corresponding path program 116 times [2021-02-19 19:53:41,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:53:41,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405997817] [2021-02-19 19:53:41,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:53:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:53:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 29 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:41,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405997817] [2021-02-19 19:53:41,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500699016] [2021-02-19 19:53:41,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:53:41,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:53:41,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:53:41,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:53:41,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:53:42,218 WARN L202 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2021-02-19 19:53:42,493 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 29 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:42,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:53:42,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 30 [2021-02-19 19:53:42,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902349243] [2021-02-19 19:53:42,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-02-19 19:53:42,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:53:42,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-02-19 19:53:42,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=764, Unknown=0, NotChecked=0, Total=930 [2021-02-19 19:53:42,494 INFO L87 Difference]: Start difference. First operand 28876 states and 74988 transitions. Second operand has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:44,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:53:44,592 INFO L93 Difference]: Finished difference Result 33473 states and 84685 transitions. [2021-02-19 19:53:44,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-02-19 19:53:44,593 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:53:44,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:53:44,636 INFO L225 Difference]: With dead ends: 33473 [2021-02-19 19:53:44,636 INFO L226 Difference]: Without dead ends: 33417 [2021-02-19 19:53:44,637 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4604 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2932, Invalid=9724, Unknown=0, NotChecked=0, Total=12656 [2021-02-19 19:53:44,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33417 states. [2021-02-19 19:53:44,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33417 to 26468. [2021-02-19 19:53:45,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26468 states, 26467 states have (on average 2.601541542297956) internal successors, (68855), 26467 states have internal predecessors, (68855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:45,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26468 states to 26468 states and 68855 transitions. [2021-02-19 19:53:45,054 INFO L78 Accepts]: Start accepts. Automaton has 26468 states and 68855 transitions. Word has length 40 [2021-02-19 19:53:45,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:53:45,054 INFO L480 AbstractCegarLoop]: Abstraction has 26468 states and 68855 transitions. [2021-02-19 19:53:45,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:45,054 INFO L276 IsEmpty]: Start isEmpty. Operand 26468 states and 68855 transitions. [2021-02-19 19:53:45,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:53:45,068 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:53:45,068 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:53:45,268 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3699,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:53:45,268 INFO L428 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:53:45,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:53:45,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1911277525, now seen corresponding path program 117 times [2021-02-19 19:53:45,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:53:45,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791391181] [2021-02-19 19:53:45,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:53:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:53:45,413 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:45,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791391181] [2021-02-19 19:53:45,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313815997] [2021-02-19 19:53:45,414 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 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 [2021-02-19 19:53:45,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-02-19 19:53:45,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:53:45,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:53:45,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:53:45,780 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:45,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:53:45,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2021-02-19 19:53:45,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776680305] [2021-02-19 19:53:45,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-02-19 19:53:45,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:53:45,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-02-19 19:53:45,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=814, Unknown=0, NotChecked=0, Total=992 [2021-02-19 19:53:45,781 INFO L87 Difference]: Start difference. First operand 26468 states and 68855 transitions. Second operand has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:47,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:53:47,954 INFO L93 Difference]: Finished difference Result 32096 states and 80790 transitions. [2021-02-19 19:53:47,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-02-19 19:53:47,954 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:53:47,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:53:47,988 INFO L225 Difference]: With dead ends: 32096 [2021-02-19 19:53:47,988 INFO L226 Difference]: Without dead ends: 32046 [2021-02-19 19:53:47,988 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4740 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3036, Invalid=10074, Unknown=0, NotChecked=0, Total=13110 [2021-02-19 19:53:48,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32046 states. [2021-02-19 19:53:48,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32046 to 24004. [2021-02-19 19:53:48,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24004 states, 24003 states have (on average 2.599633379160938) internal successors, (62399), 24003 states have internal predecessors, (62399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:48,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24004 states to 24004 states and 62399 transitions. [2021-02-19 19:53:48,326 INFO L78 Accepts]: Start accepts. Automaton has 24004 states and 62399 transitions. Word has length 40 [2021-02-19 19:53:48,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:53:48,326 INFO L480 AbstractCegarLoop]: Abstraction has 24004 states and 62399 transitions. [2021-02-19 19:53:48,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:48,326 INFO L276 IsEmpty]: Start isEmpty. Operand 24004 states and 62399 transitions. [2021-02-19 19:53:48,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:53:48,339 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:53:48,339 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:53:48,539 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3700,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:53:48,539 INFO L428 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:53:48,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:53:48,540 INFO L82 PathProgramCache]: Analyzing trace with hash -110138513, now seen corresponding path program 118 times [2021-02-19 19:53:48,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:53:48,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836122486] [2021-02-19 19:53:48,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:53:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:53:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 35 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:53:48,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836122486] [2021-02-19 19:53:48,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966379366] [2021-02-19 19:53:48,707 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 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-02-19 19:53:48,729 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:53:48,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:53:48,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:53:48,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:53:49,084 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:49,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:53:49,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-02-19 19:53:49,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888974592] [2021-02-19 19:53:49,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-02-19 19:53:49,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:53:49,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-02-19 19:53:49,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=869, Unknown=0, NotChecked=0, Total=1056 [2021-02-19 19:53:49,085 INFO L87 Difference]: Start difference. First operand 24004 states and 62399 transitions. Second operand has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:51,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:53:51,381 INFO L93 Difference]: Finished difference Result 28131 states and 70967 transitions. [2021-02-19 19:53:51,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-02-19 19:53:51,382 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:53:51,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:53:51,416 INFO L225 Difference]: With dead ends: 28131 [2021-02-19 19:53:51,416 INFO L226 Difference]: Without dead ends: 28131 [2021-02-19 19:53:51,417 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3698 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2970, Invalid=9240, Unknown=0, NotChecked=0, Total=12210 [2021-02-19 19:53:51,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28131 states. [2021-02-19 19:53:51,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28131 to 21876. [2021-02-19 19:53:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21876 states, 21875 states have (on average 2.5954285714285716) internal successors, (56775), 21875 states have internal predecessors, (56775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:51,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21876 states to 21876 states and 56775 transitions. [2021-02-19 19:53:51,715 INFO L78 Accepts]: Start accepts. Automaton has 21876 states and 56775 transitions. Word has length 40 [2021-02-19 19:53:51,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:53:51,715 INFO L480 AbstractCegarLoop]: Abstraction has 21876 states and 56775 transitions. [2021-02-19 19:53:51,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.212121212121212) internal successors, (73), 32 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:51,715 INFO L276 IsEmpty]: Start isEmpty. Operand 21876 states and 56775 transitions. [2021-02-19 19:53:51,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:53:51,726 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:53:51,726 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:53:51,926 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3701 [2021-02-19 19:53:51,927 INFO L428 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:53:51,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:53:51,927 INFO L82 PathProgramCache]: Analyzing trace with hash 675218859, now seen corresponding path program 119 times [2021-02-19 19:53:51,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:53:51,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521487103] [2021-02-19 19:53:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:53:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:53:52,059 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 38 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:53:52,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521487103] [2021-02-19 19:53:52,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937595526] [2021-02-19 19:53:52,059 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 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 [2021-02-19 19:53:52,081 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-02-19 19:53:52,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:53:52,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:53:52,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:53:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 38 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:52,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:53:52,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2021-02-19 19:53:52,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072091514] [2021-02-19 19:53:52,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-02-19 19:53:52,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:53:52,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-02-19 19:53:52,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=826, Unknown=0, NotChecked=0, Total=992 [2021-02-19 19:53:52,431 INFO L87 Difference]: Start difference. First operand 21876 states and 56775 transitions. Second operand has 32 states, 32 states have (on average 2.21875) internal successors, (71), 31 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:55,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:53:55,072 INFO L93 Difference]: Finished difference Result 25120 states and 63294 transitions. [2021-02-19 19:53:55,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-02-19 19:53:55,073 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 31 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:53:55,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:53:55,104 INFO L225 Difference]: With dead ends: 25120 [2021-02-19 19:53:55,104 INFO L226 Difference]: Without dead ends: 24982 [2021-02-19 19:53:55,105 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5780 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3320, Invalid=12682, Unknown=0, NotChecked=0, Total=16002 [2021-02-19 19:53:55,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24982 states. [2021-02-19 19:53:55,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24982 to 21296. [2021-02-19 19:53:55,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21296 states, 21295 states have (on average 2.5844094857947875) internal successors, (55035), 21295 states have internal predecessors, (55035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21296 states to 21296 states and 55035 transitions. [2021-02-19 19:53:55,436 INFO L78 Accepts]: Start accepts. Automaton has 21296 states and 55035 transitions. Word has length 40 [2021-02-19 19:53:55,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:53:55,436 INFO L480 AbstractCegarLoop]: Abstraction has 21296 states and 55035 transitions. [2021-02-19 19:53:55,436 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 31 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:55,436 INFO L276 IsEmpty]: Start isEmpty. Operand 21296 states and 55035 transitions. [2021-02-19 19:53:55,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:53:55,446 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:53:55,446 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:53:55,646 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3702,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:53:55,647 INFO L428 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:53:55,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:53:55,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1378093167, now seen corresponding path program 120 times [2021-02-19 19:53:55,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:53:55,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682488533] [2021-02-19 19:53:55,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:53:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:53:55,786 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 34 proven. 50 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:53:55,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682488533] [2021-02-19 19:53:55,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107155361] [2021-02-19 19:53:55,786 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 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 [2021-02-19 19:53:55,809 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-02-19 19:53:55,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:53:55,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:53:55,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:53:56,139 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:56,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:53:56,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2021-02-19 19:53:56,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300927303] [2021-02-19 19:53:56,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-02-19 19:53:56,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:53:56,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-02-19 19:53:56,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2021-02-19 19:53:56,140 INFO L87 Difference]: Start difference. First operand 21296 states and 55035 transitions. Second operand has 32 states, 32 states have (on average 2.28125) internal successors, (73), 31 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:58,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:53:58,661 INFO L93 Difference]: Finished difference Result 26874 states and 67135 transitions. [2021-02-19 19:53:58,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-02-19 19:53:58,662 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 31 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:53:58,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:53:58,693 INFO L225 Difference]: With dead ends: 26874 [2021-02-19 19:53:58,693 INFO L226 Difference]: Without dead ends: 26874 [2021-02-19 19:53:58,695 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4431 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3338, Invalid=10234, Unknown=0, NotChecked=0, Total=13572 [2021-02-19 19:53:58,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26874 states. [2021-02-19 19:53:58,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26874 to 19476. [2021-02-19 19:53:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19476 states, 19475 states have (on average 2.5761232349165595) internal successors, (50170), 19475 states have internal predecessors, (50170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:59,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19476 states to 19476 states and 50170 transitions. [2021-02-19 19:53:59,019 INFO L78 Accepts]: Start accepts. Automaton has 19476 states and 50170 transitions. Word has length 40 [2021-02-19 19:53:59,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:53:59,019 INFO L480 AbstractCegarLoop]: Abstraction has 19476 states and 50170 transitions. [2021-02-19 19:53:59,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.28125) internal successors, (73), 31 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:53:59,019 INFO L276 IsEmpty]: Start isEmpty. Operand 19476 states and 50170 transitions. [2021-02-19 19:53:59,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:53:59,030 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:53:59,030 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:53:59,230 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3703,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:53:59,230 INFO L428 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:53:59,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:53:59,230 INFO L82 PathProgramCache]: Analyzing trace with hash 659358123, now seen corresponding path program 121 times [2021-02-19 19:53:59,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:53:59,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690461221] [2021-02-19 19:53:59,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:53:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:53:59,356 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:53:59,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690461221] [2021-02-19 19:53:59,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768319318] [2021-02-19 19:53:59,357 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 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 [2021-02-19 19:53:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:53:59,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:53:59,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:53:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 31 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:53:59,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:53:59,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 30 [2021-02-19 19:53:59,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161570326] [2021-02-19 19:53:59,719 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-02-19 19:53:59,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:53:59,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-02-19 19:53:59,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2021-02-19 19:53:59,720 INFO L87 Difference]: Start difference. First operand 19476 states and 50170 transitions. Second operand has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:02,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:54:02,079 INFO L93 Difference]: Finished difference Result 22442 states and 56490 transitions. [2021-02-19 19:54:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-02-19 19:54:02,080 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:54:02,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:54:02,108 INFO L225 Difference]: With dead ends: 22442 [2021-02-19 19:54:02,108 INFO L226 Difference]: Without dead ends: 22343 [2021-02-19 19:54:02,109 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5030 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2802, Invalid=10770, Unknown=0, NotChecked=0, Total=13572 [2021-02-19 19:54:02,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22343 states. [2021-02-19 19:54:02,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22343 to 19294. [2021-02-19 19:54:02,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19294 states, 19293 states have (on average 2.5669932099725288) internal successors, (49525), 19293 states have internal predecessors, (49525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:02,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19294 states to 19294 states and 49525 transitions. [2021-02-19 19:54:02,424 INFO L78 Accepts]: Start accepts. Automaton has 19294 states and 49525 transitions. Word has length 40 [2021-02-19 19:54:02,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:54:02,424 INFO L480 AbstractCegarLoop]: Abstraction has 19294 states and 49525 transitions. [2021-02-19 19:54:02,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.2903225806451615) internal successors, (71), 30 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:02,424 INFO L276 IsEmpty]: Start isEmpty. Operand 19294 states and 49525 transitions. [2021-02-19 19:54:02,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:54:02,436 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:54:02,436 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:54:02,636 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3704 [2021-02-19 19:54:02,636 INFO L428 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:54:02,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:54:02,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1722030737, now seen corresponding path program 122 times [2021-02-19 19:54:02,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:54:02,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937665800] [2021-02-19 19:54:02,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:54:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:54:02,762 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 33 proven. 51 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:54:02,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937665800] [2021-02-19 19:54:02,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916819847] [2021-02-19 19:54:02,762 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 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 [2021-02-19 19:54:02,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:54:02,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:54:02,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:54:02,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:54:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:54:03,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:54:03,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 30 [2021-02-19 19:54:03,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90031077] [2021-02-19 19:54:03,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-02-19 19:54:03,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:54:03,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-02-19 19:54:03,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2021-02-19 19:54:03,116 INFO L87 Difference]: Start difference. First operand 19294 states and 49525 transitions. Second operand has 31 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 30 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:05,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:54:05,957 INFO L93 Difference]: Finished difference Result 25902 states and 64230 transitions. [2021-02-19 19:54:05,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-02-19 19:54:05,958 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 30 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:54:05,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:54:05,988 INFO L225 Difference]: With dead ends: 25902 [2021-02-19 19:54:05,988 INFO L226 Difference]: Without dead ends: 25902 [2021-02-19 19:54:05,989 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5410 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3958, Invalid=11542, Unknown=0, NotChecked=0, Total=15500 [2021-02-19 19:54:06,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25902 states. [2021-02-19 19:54:06,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25902 to 17898. [2021-02-19 19:54:06,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17898 states, 17897 states have (on average 2.5554003464267754) internal successors, (45734), 17897 states have internal predecessors, (45734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:06,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17898 states to 17898 states and 45734 transitions. [2021-02-19 19:54:06,260 INFO L78 Accepts]: Start accepts. Automaton has 17898 states and 45734 transitions. Word has length 40 [2021-02-19 19:54:06,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:54:06,260 INFO L480 AbstractCegarLoop]: Abstraction has 17898 states and 45734 transitions. [2021-02-19 19:54:06,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.3548387096774195) internal successors, (73), 30 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:06,260 INFO L276 IsEmpty]: Start isEmpty. Operand 17898 states and 45734 transitions. [2021-02-19 19:54:06,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:54:06,270 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:54:06,270 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:54:06,473 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3705,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:54:06,474 INFO L428 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:54:06,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:54:06,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1235877291, now seen corresponding path program 123 times [2021-02-19 19:54:06,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:54:06,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54902391] [2021-02-19 19:54:06,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:54:06,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:54:06,590 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:54:06,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54902391] [2021-02-19 19:54:06,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49624681] [2021-02-19 19:54:06,590 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 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 [2021-02-19 19:54:06,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-02-19 19:54:06,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:54:06,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:54:06,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:54:06,949 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:54:06,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:54:06,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 29 [2021-02-19 19:54:06,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146256147] [2021-02-19 19:54:06,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-02-19 19:54:06,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:54:06,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-02-19 19:54:06,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=722, Unknown=0, NotChecked=0, Total=870 [2021-02-19 19:54:06,950 INFO L87 Difference]: Start difference. First operand 17898 states and 45734 transitions. Second operand has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:09,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:54:09,093 INFO L93 Difference]: Finished difference Result 20487 states and 51579 transitions. [2021-02-19 19:54:09,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-02-19 19:54:09,094 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:54:09,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:54:09,116 INFO L225 Difference]: With dead ends: 20487 [2021-02-19 19:54:09,117 INFO L226 Difference]: Without dead ends: 20421 [2021-02-19 19:54:09,118 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4431 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2466, Invalid=9306, Unknown=0, NotChecked=0, Total=11772 [2021-02-19 19:54:09,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20421 states. [2021-02-19 19:54:09,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20421 to 18251. [2021-02-19 19:54:09,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18251 states, 18250 states have (on average 2.5564383561643838) internal successors, (46655), 18250 states have internal predecessors, (46655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:09,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18251 states to 18251 states and 46655 transitions. [2021-02-19 19:54:09,385 INFO L78 Accepts]: Start accepts. Automaton has 18251 states and 46655 transitions. Word has length 40 [2021-02-19 19:54:09,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:54:09,385 INFO L480 AbstractCegarLoop]: Abstraction has 18251 states and 46655 transitions. [2021-02-19 19:54:09,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 29 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:09,385 INFO L276 IsEmpty]: Start isEmpty. Operand 18251 states and 46655 transitions. [2021-02-19 19:54:09,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:54:09,395 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:54:09,395 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:54:09,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3706 [2021-02-19 19:54:09,596 INFO L428 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:54:09,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:54:09,596 INFO L82 PathProgramCache]: Analyzing trace with hash 384238191, now seen corresponding path program 124 times [2021-02-19 19:54:09,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:54:09,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528402889] [2021-02-19 19:54:09,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:54:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:54:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:54:09,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528402889] [2021-02-19 19:54:09,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499386229] [2021-02-19 19:54:09,705 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 [2021-02-19 19:54:09,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:54:09,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:54:09,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:54:09,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:54:10,064 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:54:10,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:54:10,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 29 [2021-02-19 19:54:10,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36557771] [2021-02-19 19:54:10,065 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-02-19 19:54:10,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:54:10,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-02-19 19:54:10,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=725, Unknown=0, NotChecked=0, Total=870 [2021-02-19 19:54:10,066 INFO L87 Difference]: Start difference. First operand 18251 states and 46655 transitions. Second operand has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:13,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:54:13,305 INFO L93 Difference]: Finished difference Result 25865 states and 63837 transitions. [2021-02-19 19:54:13,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-02-19 19:54:13,306 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:54:13,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:54:13,337 INFO L225 Difference]: With dead ends: 25865 [2021-02-19 19:54:13,337 INFO L226 Difference]: Without dead ends: 25865 [2021-02-19 19:54:13,339 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6848 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4818, Invalid=13272, Unknown=0, NotChecked=0, Total=18090 [2021-02-19 19:54:13,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25865 states. [2021-02-19 19:54:13,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25865 to 17253. [2021-02-19 19:54:13,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17253 states, 17252 states have (on average 2.541386505912358) internal successors, (43844), 17252 states have internal predecessors, (43844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:13,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17253 states to 17253 states and 43844 transitions. [2021-02-19 19:54:13,628 INFO L78 Accepts]: Start accepts. Automaton has 17253 states and 43844 transitions. Word has length 40 [2021-02-19 19:54:13,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:54:13,628 INFO L480 AbstractCegarLoop]: Abstraction has 17253 states and 43844 transitions. [2021-02-19 19:54:13,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.433333333333333) internal successors, (73), 29 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:13,628 INFO L276 IsEmpty]: Start isEmpty. Operand 17253 states and 43844 transitions. [2021-02-19 19:54:13,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:54:13,638 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:54:13,638 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:54:13,838 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3707 [2021-02-19 19:54:13,838 INFO L428 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:54:13,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:54:13,838 INFO L82 PathProgramCache]: Analyzing trace with hash 387316139, now seen corresponding path program 125 times [2021-02-19 19:54:13,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:54:13,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529870882] [2021-02-19 19:54:13,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:54:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:54:13,938 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:54:13,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529870882] [2021-02-19 19:54:13,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070551740] [2021-02-19 19:54:13,938 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 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 [2021-02-19 19:54:13,964 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-02-19 19:54:13,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:54:13,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:54:13,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:54:14,305 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 29 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:54:14,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:54:14,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 28 [2021-02-19 19:54:14,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032350510] [2021-02-19 19:54:14,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-02-19 19:54:14,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:54:14,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-02-19 19:54:14,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2021-02-19 19:54:14,306 INFO L87 Difference]: Start difference. First operand 17253 states and 43844 transitions. Second operand has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 28 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:16,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:54:16,351 INFO L93 Difference]: Finished difference Result 19251 states and 48390 transitions. [2021-02-19 19:54:16,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-02-19 19:54:16,353 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 28 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:54:16,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:54:16,374 INFO L225 Difference]: With dead ends: 19251 [2021-02-19 19:54:16,374 INFO L226 Difference]: Without dead ends: 19212 [2021-02-19 19:54:16,376 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3960 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2263, Invalid=8243, Unknown=0, NotChecked=0, Total=10506 [2021-02-19 19:54:16,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19212 states. [2021-02-19 19:54:16,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19212 to 17619. [2021-02-19 19:54:16,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17619 states, 17618 states have (on average 2.546032466795323) internal successors, (44856), 17618 states have internal predecessors, (44856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:16,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17619 states to 17619 states and 44856 transitions. [2021-02-19 19:54:16,622 INFO L78 Accepts]: Start accepts. Automaton has 17619 states and 44856 transitions. Word has length 40 [2021-02-19 19:54:16,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:54:16,622 INFO L480 AbstractCegarLoop]: Abstraction has 17619 states and 44856 transitions. [2021-02-19 19:54:16,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.4482758620689653) internal successors, (71), 28 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:16,622 INFO L276 IsEmpty]: Start isEmpty. Operand 17619 states and 44856 transitions. [2021-02-19 19:54:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:54:16,631 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:54:16,632 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:54:16,834 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3708 [2021-02-19 19:54:16,834 INFO L428 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:54:16,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:54:16,834 INFO L82 PathProgramCache]: Analyzing trace with hash -963289233, now seen corresponding path program 126 times [2021-02-19 19:54:16,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:54:16,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608000626] [2021-02-19 19:54:16,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:54:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:54:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 31 proven. 53 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:54:16,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608000626] [2021-02-19 19:54:16,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722551680] [2021-02-19 19:54:16,938 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 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 [2021-02-19 19:54:16,963 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-02-19 19:54:16,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:54:16,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:54:16,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:54:17,369 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:54:17,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:54:17,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 28 [2021-02-19 19:54:17,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464095688] [2021-02-19 19:54:17,370 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-02-19 19:54:17,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:54:17,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-02-19 19:54:17,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2021-02-19 19:54:17,370 INFO L87 Difference]: Start difference. First operand 17619 states and 44856 transitions. Second operand has 29 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 28 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:20,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:54:20,550 INFO L93 Difference]: Finished difference Result 28254 states and 69498 transitions. [2021-02-19 19:54:20,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-02-19 19:54:20,551 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 28 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:54:20,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:54:20,587 INFO L225 Difference]: With dead ends: 28254 [2021-02-19 19:54:20,587 INFO L226 Difference]: Without dead ends: 28254 [2021-02-19 19:54:20,589 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7942 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=5440, Invalid=14300, Unknown=0, NotChecked=0, Total=19740 [2021-02-19 19:54:20,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28254 states. [2021-02-19 19:54:20,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28254 to 22012. [2021-02-19 19:54:20,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22012 states, 22011 states have (on average 2.520875925673527) internal successors, (55487), 22011 states have internal predecessors, (55487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:20,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22012 states to 22012 states and 55487 transitions. [2021-02-19 19:54:20,926 INFO L78 Accepts]: Start accepts. Automaton has 22012 states and 55487 transitions. Word has length 40 [2021-02-19 19:54:20,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:54:20,926 INFO L480 AbstractCegarLoop]: Abstraction has 22012 states and 55487 transitions. [2021-02-19 19:54:20,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.5172413793103448) internal successors, (73), 28 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:20,926 INFO L276 IsEmpty]: Start isEmpty. Operand 22012 states and 55487 transitions. [2021-02-19 19:54:20,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:54:20,937 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:54:20,937 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:54:21,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3709 [2021-02-19 19:54:21,137 INFO L428 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:54:21,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:54:21,138 INFO L82 PathProgramCache]: Analyzing trace with hash 122746283, now seen corresponding path program 127 times [2021-02-19 19:54:21,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:54:21,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526805119] [2021-02-19 19:54:21,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:54:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:54:21,229 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 38 proven. 46 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:54:21,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526805119] [2021-02-19 19:54:21,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252556626] [2021-02-19 19:54:21,230 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 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 [2021-02-19 19:54:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:54:21,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:54:21,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:54:21,604 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:54:21,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:54:21,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 27 [2021-02-19 19:54:21,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059327553] [2021-02-19 19:54:21,605 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-19 19:54:21,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:54:21,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-19 19:54:21,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2021-02-19 19:54:21,605 INFO L87 Difference]: Start difference. First operand 22012 states and 55487 transitions. Second operand has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 27 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:23,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:54:23,649 INFO L93 Difference]: Finished difference Result 23071 states and 57669 transitions. [2021-02-19 19:54:23,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-02-19 19:54:23,650 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 27 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:54:23,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:54:23,675 INFO L225 Difference]: With dead ends: 23071 [2021-02-19 19:54:23,675 INFO L226 Difference]: Without dead ends: 23053 [2021-02-19 19:54:23,676 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3632 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2150, Invalid=7552, Unknown=0, NotChecked=0, Total=9702 [2021-02-19 19:54:23,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23053 states. [2021-02-19 19:54:23,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23053 to 22214. [2021-02-19 19:54:23,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22214 states, 22213 states have (on average 2.5227119254490615) internal successors, (56037), 22213 states have internal predecessors, (56037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:23,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22214 states to 22214 states and 56037 transitions. [2021-02-19 19:54:23,974 INFO L78 Accepts]: Start accepts. Automaton has 22214 states and 56037 transitions. Word has length 40 [2021-02-19 19:54:23,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:54:23,974 INFO L480 AbstractCegarLoop]: Abstraction has 22214 states and 56037 transitions. [2021-02-19 19:54:23,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 27 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:23,974 INFO L276 IsEmpty]: Start isEmpty. Operand 22214 states and 56037 transitions. [2021-02-19 19:54:23,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:54:23,985 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:54:23,985 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:54:24,186 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3710 [2021-02-19 19:54:24,186 INFO L428 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:54:24,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:54:24,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1479998575, now seen corresponding path program 128 times [2021-02-19 19:54:24,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:54:24,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917240752] [2021-02-19 19:54:24,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:54:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:54:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:54:24,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917240752] [2021-02-19 19:54:24,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114778204] [2021-02-19 19:54:24,299 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 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 [2021-02-19 19:54:24,321 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:54:24,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:54:24,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:54:24,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:54:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:54:24,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:54:24,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 27 [2021-02-19 19:54:24,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968312068] [2021-02-19 19:54:24,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-19 19:54:24,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:54:24,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-19 19:54:24,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2021-02-19 19:54:24,656 INFO L87 Difference]: Start difference. First operand 22214 states and 56037 transitions. Second operand has 28 states, 28 states have (on average 2.642857142857143) internal successors, (74), 27 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:27,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:54:27,870 INFO L93 Difference]: Finished difference Result 36775 states and 91582 transitions. [2021-02-19 19:54:27,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-02-19 19:54:27,871 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.642857142857143) internal successors, (74), 27 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:54:27,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:54:27,916 INFO L225 Difference]: With dead ends: 36775 [2021-02-19 19:54:27,916 INFO L226 Difference]: Without dead ends: 36775 [2021-02-19 19:54:27,918 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8274 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=5518, Invalid=14504, Unknown=0, NotChecked=0, Total=20022 [2021-02-19 19:54:27,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36775 states. [2021-02-19 19:54:28,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36775 to 32904. [2021-02-19 19:54:28,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32904 states, 32903 states have (on average 2.529982068504392) internal successors, (83244), 32903 states have internal predecessors, (83244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:28,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32904 states to 32904 states and 83244 transitions. [2021-02-19 19:54:28,409 INFO L78 Accepts]: Start accepts. Automaton has 32904 states and 83244 transitions. Word has length 40 [2021-02-19 19:54:28,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:54:28,409 INFO L480 AbstractCegarLoop]: Abstraction has 32904 states and 83244 transitions. [2021-02-19 19:54:28,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.642857142857143) internal successors, (74), 27 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:28,409 INFO L276 IsEmpty]: Start isEmpty. Operand 32904 states and 83244 transitions. [2021-02-19 19:54:28,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:54:28,530 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:54:28,530 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:54:28,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3711 [2021-02-19 19:54:28,731 INFO L428 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:54:28,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:54:28,731 INFO L82 PathProgramCache]: Analyzing trace with hash -466022059, now seen corresponding path program 129 times [2021-02-19 19:54:28,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:54:28,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805964265] [2021-02-19 19:54:28,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:54:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:54:28,817 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 43 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:54:28,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805964265] [2021-02-19 19:54:28,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332120676] [2021-02-19 19:54:28,818 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 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 [2021-02-19 19:54:28,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-02-19 19:54:28,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:54:28,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:54:28,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:54:29,175 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 38 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:54:29,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:54:29,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17] total 26 [2021-02-19 19:54:29,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317125490] [2021-02-19 19:54:29,176 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-02-19 19:54:29,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:54:29,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-02-19 19:54:29,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2021-02-19 19:54:29,176 INFO L87 Difference]: Start difference. First operand 32904 states and 83244 transitions. Second operand has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 26 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:31,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:54:31,127 INFO L93 Difference]: Finished difference Result 35887 states and 89458 transitions. [2021-02-19 19:54:31,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-02-19 19:54:31,128 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 26 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:54:31,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:54:31,174 INFO L225 Difference]: With dead ends: 35887 [2021-02-19 19:54:31,174 INFO L226 Difference]: Without dead ends: 35883 [2021-02-19 19:54:31,175 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3426 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2678, Invalid=7024, Unknown=0, NotChecked=0, Total=9702 [2021-02-19 19:54:31,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35883 states. [2021-02-19 19:54:31,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35883 to 32269. [2021-02-19 19:54:31,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32269 states, 32268 states have (on average 2.526465848518656) internal successors, (81524), 32268 states have internal predecessors, (81524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32269 states to 32269 states and 81524 transitions. [2021-02-19 19:54:31,676 INFO L78 Accepts]: Start accepts. Automaton has 32269 states and 81524 transitions. Word has length 40 [2021-02-19 19:54:31,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:54:31,676 INFO L480 AbstractCegarLoop]: Abstraction has 32269 states and 81524 transitions. [2021-02-19 19:54:31,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.5925925925925926) internal successors, (70), 26 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:31,676 INFO L276 IsEmpty]: Start isEmpty. Operand 32269 states and 81524 transitions. [2021-02-19 19:54:31,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:54:31,690 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:54:31,690 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:54:31,891 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3712,130 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:54:31,891 INFO L428 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:54:31,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:54:31,891 INFO L82 PathProgramCache]: Analyzing trace with hash -972368325, now seen corresponding path program 130 times [2021-02-19 19:54:31,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:54:31,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387732334] [2021-02-19 19:54:31,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:54:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:54:31,987 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 37 proven. 47 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:54:31,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387732334] [2021-02-19 19:54:31,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822775830] [2021-02-19 19:54:31,988 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 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 [2021-02-19 19:54:32,007 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:54:32,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:54:32,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:54:32,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:54:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 33 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:54:32,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:54:32,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 27 [2021-02-19 19:54:32,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961249480] [2021-02-19 19:54:32,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-02-19 19:54:32,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:54:32,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-02-19 19:54:32,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2021-02-19 19:54:32,349 INFO L87 Difference]: Start difference. First operand 32269 states and 81524 transitions. Second operand has 28 states, 28 states have (on average 2.5) internal successors, (70), 27 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:34,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:54:34,372 INFO L93 Difference]: Finished difference Result 36401 states and 90806 transitions. [2021-02-19 19:54:34,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-02-19 19:54:34,374 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.5) internal successors, (70), 27 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:54:34,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:54:34,413 INFO L225 Difference]: With dead ends: 36401 [2021-02-19 19:54:34,413 INFO L226 Difference]: Without dead ends: 36389 [2021-02-19 19:54:34,414 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3240 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2417, Invalid=6895, Unknown=0, NotChecked=0, Total=9312 [2021-02-19 19:54:34,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36389 states. [2021-02-19 19:54:34,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36389 to 31831. [2021-02-19 19:54:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31831 states, 31830 states have (on average 2.527615457115928) internal successors, (80454), 31830 states have internal predecessors, (80454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:34,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31831 states to 31831 states and 80454 transitions. [2021-02-19 19:54:34,870 INFO L78 Accepts]: Start accepts. Automaton has 31831 states and 80454 transitions. Word has length 40 [2021-02-19 19:54:34,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:54:34,870 INFO L480 AbstractCegarLoop]: Abstraction has 31831 states and 80454 transitions. [2021-02-19 19:54:34,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.5) internal successors, (70), 27 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:34,870 INFO L276 IsEmpty]: Start isEmpty. Operand 31831 states and 80454 transitions. [2021-02-19 19:54:34,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:54:34,884 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:54:34,884 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:54:35,084 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3713,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:54:35,084 INFO L428 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:54:35,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:54:35,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1199589705, now seen corresponding path program 131 times [2021-02-19 19:54:35,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:54:35,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670646134] [2021-02-19 19:54:35,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:54:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:54:35,194 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 54 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:54:35,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670646134] [2021-02-19 19:54:35,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158830526] [2021-02-19 19:54:35,194 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 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 [2021-02-19 19:54:35,216 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-02-19 19:54:35,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:54:35,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:54:35,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:54:35,565 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:54:35,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:54:35,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 28 [2021-02-19 19:54:35,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578654039] [2021-02-19 19:54:35,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-02-19 19:54:35,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:54:35,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-02-19 19:54:35,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2021-02-19 19:54:35,566 INFO L87 Difference]: Start difference. First operand 31831 states and 80454 transitions. Second operand has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:37,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:54:37,505 INFO L93 Difference]: Finished difference Result 37561 states and 93690 transitions. [2021-02-19 19:54:37,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-02-19 19:54:37,506 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:54:37,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:54:37,554 INFO L225 Difference]: With dead ends: 37561 [2021-02-19 19:54:37,554 INFO L226 Difference]: Without dead ends: 37541 [2021-02-19 19:54:37,555 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3190 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2289, Invalid=7023, Unknown=0, NotChecked=0, Total=9312 [2021-02-19 19:54:37,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37541 states. [2021-02-19 19:54:37,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37541 to 32042. [2021-02-19 19:54:38,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32042 states, 32041 states have (on average 2.529758746605911) internal successors, (81056), 32041 states have internal predecessors, (81056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:38,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32042 states to 32042 states and 81056 transitions. [2021-02-19 19:54:38,056 INFO L78 Accepts]: Start accepts. Automaton has 32042 states and 81056 transitions. Word has length 40 [2021-02-19 19:54:38,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:54:38,057 INFO L480 AbstractCegarLoop]: Abstraction has 32042 states and 81056 transitions. [2021-02-19 19:54:38,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:38,057 INFO L276 IsEmpty]: Start isEmpty. Operand 32042 states and 81056 transitions. [2021-02-19 19:54:38,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:54:38,070 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:54:38,070 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:54:38,271 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3714,132 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:54:38,271 INFO L428 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:54:38,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:54:38,271 INFO L82 PathProgramCache]: Analyzing trace with hash -516003789, now seen corresponding path program 132 times [2021-02-19 19:54:38,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:54:38,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4854688] [2021-02-19 19:54:38,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:54:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:54:38,387 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 57 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:54:38,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4854688] [2021-02-19 19:54:38,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352631165] [2021-02-19 19:54:38,387 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 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 [2021-02-19 19:54:38,410 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-02-19 19:54:38,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:54:38,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:54:38,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:54:38,900 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:54:38,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:54:38,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 29 [2021-02-19 19:54:38,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823879847] [2021-02-19 19:54:38,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-02-19 19:54:38,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:54:38,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-02-19 19:54:38,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2021-02-19 19:54:38,901 INFO L87 Difference]: Start difference. First operand 32042 states and 81056 transitions. Second operand has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:40,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:54:40,996 INFO L93 Difference]: Finished difference Result 39838 states and 99403 transitions. [2021-02-19 19:54:40,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-02-19 19:54:40,997 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:54:40,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:54:41,055 INFO L225 Difference]: With dead ends: 39838 [2021-02-19 19:54:41,055 INFO L226 Difference]: Without dead ends: 39810 [2021-02-19 19:54:41,056 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3289 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2297, Invalid=7405, Unknown=0, NotChecked=0, Total=9702 [2021-02-19 19:54:41,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39810 states. [2021-02-19 19:54:41,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39810 to 33837. [2021-02-19 19:54:41,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33837 states, 33836 states have (on average 2.535997162785199) internal successors, (85808), 33836 states have internal predecessors, (85808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:41,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33837 states to 33837 states and 85808 transitions. [2021-02-19 19:54:41,641 INFO L78 Accepts]: Start accepts. Automaton has 33837 states and 85808 transitions. Word has length 40 [2021-02-19 19:54:41,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:54:41,641 INFO L480 AbstractCegarLoop]: Abstraction has 33837 states and 85808 transitions. [2021-02-19 19:54:41,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 29 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:41,641 INFO L276 IsEmpty]: Start isEmpty. Operand 33837 states and 85808 transitions. [2021-02-19 19:54:41,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:54:41,656 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:54:41,656 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:54:41,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3715 [2021-02-19 19:54:41,856 INFO L428 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:54:41,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:54:41,857 INFO L82 PathProgramCache]: Analyzing trace with hash -719934801, now seen corresponding path program 133 times [2021-02-19 19:54:41,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:54:41,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955358506] [2021-02-19 19:54:41,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:54:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:54:41,987 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 56 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:54:41,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955358506] [2021-02-19 19:54:41,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507976733] [2021-02-19 19:54:41,987 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 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 [2021-02-19 19:54:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:54:42,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:54:42,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:54:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:54:42,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:54:42,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 30 [2021-02-19 19:54:42,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811679158] [2021-02-19 19:54:42,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-02-19 19:54:42,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:54:42,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-02-19 19:54:42,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2021-02-19 19:54:42,384 INFO L87 Difference]: Start difference. First operand 33837 states and 85808 transitions. Second operand has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:44,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:54:44,676 INFO L93 Difference]: Finished difference Result 43908 states and 109576 transitions. [2021-02-19 19:54:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-02-19 19:54:44,677 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:54:44,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:54:44,733 INFO L225 Difference]: With dead ends: 43908 [2021-02-19 19:54:44,733 INFO L226 Difference]: Without dead ends: 43872 [2021-02-19 19:54:44,734 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3564 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2443, Invalid=8063, Unknown=0, NotChecked=0, Total=10506 [2021-02-19 19:54:44,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43872 states. [2021-02-19 19:54:45,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43872 to 40323. [2021-02-19 19:54:45,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40323 states, 40322 states have (on average 2.537894945687218) internal successors, (102333), 40322 states have internal predecessors, (102333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:45,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40323 states to 40323 states and 102333 transitions. [2021-02-19 19:54:45,386 INFO L78 Accepts]: Start accepts. Automaton has 40323 states and 102333 transitions. Word has length 40 [2021-02-19 19:54:45,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:54:45,386 INFO L480 AbstractCegarLoop]: Abstraction has 40323 states and 102333 transitions. [2021-02-19 19:54:45,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 30 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:45,386 INFO L276 IsEmpty]: Start isEmpty. Operand 40323 states and 102333 transitions. [2021-02-19 19:54:45,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:54:45,403 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:54:45,404 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:54:45,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3716 [2021-02-19 19:54:45,604 INFO L428 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:54:45,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:54:45,604 INFO L82 PathProgramCache]: Analyzing trace with hash 870858283, now seen corresponding path program 134 times [2021-02-19 19:54:45,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:54:45,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45077] [2021-02-19 19:54:45,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:54:45,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:54:45,745 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 33 proven. 51 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:54:45,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45077] [2021-02-19 19:54:45,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890044269] [2021-02-19 19:54:45,745 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 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 [2021-02-19 19:54:45,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:54:45,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:54:45,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:54:45,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:54:46,156 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 33 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:54:46,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:54:46,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2021-02-19 19:54:46,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936903524] [2021-02-19 19:54:46,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-02-19 19:54:46,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:54:46,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-02-19 19:54:46,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2021-02-19 19:54:46,157 INFO L87 Difference]: Start difference. First operand 40323 states and 102333 transitions. Second operand has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:48,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:54:48,564 INFO L93 Difference]: Finished difference Result 50681 states and 126374 transitions. [2021-02-19 19:54:48,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-02-19 19:54:48,565 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:54:48,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:54:48,640 INFO L225 Difference]: With dead ends: 50681 [2021-02-19 19:54:48,640 INFO L226 Difference]: Without dead ends: 50637 [2021-02-19 19:54:48,641 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4059 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2727, Invalid=9045, Unknown=0, NotChecked=0, Total=11772 [2021-02-19 19:54:48,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50637 states. [2021-02-19 19:54:49,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50637 to 46817. [2021-02-19 19:54:49,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46817 states, 46816 states have (on average 2.533685064935065) internal successors, (118617), 46816 states have internal predecessors, (118617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:49,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46817 states to 46817 states and 118617 transitions. [2021-02-19 19:54:49,523 INFO L78 Accepts]: Start accepts. Automaton has 46817 states and 118617 transitions. Word has length 40 [2021-02-19 19:54:49,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:54:49,523 INFO L480 AbstractCegarLoop]: Abstraction has 46817 states and 118617 transitions. [2021-02-19 19:54:49,523 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.1875) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:49,523 INFO L276 IsEmpty]: Start isEmpty. Operand 46817 states and 118617 transitions. [2021-02-19 19:54:49,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-02-19 19:54:49,544 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:54:49,544 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:54:49,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3717,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:54:49,745 INFO L428 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:54:49,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:54:49,745 INFO L82 PathProgramCache]: Analyzing trace with hash 614654631, now seen corresponding path program 135 times [2021-02-19 19:54:49,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:54:49,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926291682] [2021-02-19 19:54:49,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:54:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:54:49,898 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 43 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:54:49,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926291682] [2021-02-19 19:54:49,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794395108] [2021-02-19 19:54:49,898 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 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 [2021-02-19 19:54:49,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-02-19 19:54:49,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:54:49,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 17 conjunts are in the unsatisfiable core [2021-02-19 19:54:49,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:54:50,317 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 43 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:54:50,317 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:54:50,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-02-19 19:54:50,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884525245] [2021-02-19 19:54:50,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-02-19 19:54:50,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:54:50,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-02-19 19:54:50,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2021-02-19 19:54:50,318 INFO L87 Difference]: Start difference. First operand 46817 states and 118617 transitions. Second operand has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 32 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:52,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:54:52,932 INFO L93 Difference]: Finished difference Result 50538 states and 126417 transitions. [2021-02-19 19:54:52,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-02-19 19:54:52,933 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 32 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-02-19 19:54:52,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:54:53,004 INFO L225 Difference]: With dead ends: 50538 [2021-02-19 19:54:53,004 INFO L226 Difference]: Without dead ends: 50486 [2021-02-19 19:54:53,006 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4831 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3147, Invalid=10425, Unknown=0, NotChecked=0, Total=13572 [2021-02-19 19:54:53,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50486 states. [2021-02-19 19:54:53,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50486 to 46981. [2021-02-19 19:54:53,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46981 states, 46980 states have (on average 2.5367177522349937) internal successors, (119175), 46980 states have internal predecessors, (119175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:53,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46981 states to 46981 states and 119175 transitions. [2021-02-19 19:54:53,864 INFO L78 Accepts]: Start accepts. Automaton has 46981 states and 119175 transitions. Word has length 40 [2021-02-19 19:54:53,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:54:53,864 INFO L480 AbstractCegarLoop]: Abstraction has 46981 states and 119175 transitions. [2021-02-19 19:54:53,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 32 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:54:53,865 INFO L276 IsEmpty]: Start isEmpty. Operand 46981 states and 119175 transitions. [2021-02-19 19:54:53,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-19 19:54:53,891 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:54:53,891 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:54:54,091 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3718 [2021-02-19 19:54:54,091 INFO L428 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:54:54,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:54:54,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1591591315, now seen corresponding path program 136 times [2021-02-19 19:54:54,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:54:54,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290108031] [2021-02-19 19:54:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:54:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:54:54,151 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:54:54,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290108031] [2021-02-19 19:54:54,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218224382] [2021-02-19 19:54:54,151 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 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 [2021-02-19 19:54:54,174 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:54:54,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:54:54,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 45 conjunts are in the unsatisfiable core [2021-02-19 19:54:54,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:54:54,457 WARN L202 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 63 [2021-02-19 19:54:54,458 INFO L354 Elim1Store]: treesize reduction 72, result has 57.4 percent of original size [2021-02-19 19:54:54,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 21 case distinctions, treesize of input 151 treesize of output 153 [2021-02-19 19:54:54,462 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:54:54,527 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:54:54,529 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:54:54,529 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:151, output treesize:422 [2021-02-19 19:54:56,659 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2021-02-19 19:54:57,693 WARN L202 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 621 DAG size of output: 621 [2021-02-19 19:54:59,209 WARN L202 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 1196 [2021-02-19 19:55:00,224 WARN L202 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 1196 [2021-02-19 19:55:01,712 WARN L202 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 1196 [2021-02-19 19:55:18,453 WARN L202 SmtUtils]: Spent 10.85 s on a formula simplification. DAG size of input: 1196 DAG size of output: 58 [2021-02-19 19:55:19,963 INFO L354 Elim1Store]: treesize reduction 153, result has 9.5 percent of original size [2021-02-19 19:55:19,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 21 case distinctions, treesize of input 223 treesize of output 86 [2021-02-19 19:55:19,965 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:20,212 WARN L202 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 111 [2021-02-19 19:55:20,213 INFO L628 ElimStorePlain]: treesize reduction 863, result has 37.2 percent of original size [2021-02-19 19:55:20,274 INFO L354 Elim1Store]: treesize reduction 151, result has 10.7 percent of original size [2021-02-19 19:55:20,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 21 case distinctions, treesize of input 85 treesize of output 52 [2021-02-19 19:55:20,277 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:20,351 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:55:20,511 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 50 [2021-02-19 19:55:20,512 INFO L354 Elim1Store]: treesize reduction 84, result has 50.3 percent of original size [2021-02-19 19:55:20,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 21 case distinctions, treesize of input 101 treesize of output 133 [2021-02-19 19:55:20,517 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:20,536 INFO L628 ElimStorePlain]: treesize reduction 334, result has 0.9 percent of original size [2021-02-19 19:55:20,536 INFO L518 ElimStorePlain]: Eliminatee v_prenex_133 vanished before elimination [2021-02-19 19:55:20,536 INFO L518 ElimStorePlain]: Eliminatee v_prenex_134 vanished before elimination [2021-02-19 19:55:20,536 INFO L518 ElimStorePlain]: Eliminatee v_prenex_135 vanished before elimination [2021-02-19 19:55:20,536 INFO L518 ElimStorePlain]: Eliminatee v_prenex_136 vanished before elimination [2021-02-19 19:55:20,537 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 7 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:55:20,537 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 14 variables, input treesize:1590, output treesize:3 [2021-02-19 19:55:20,579 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:55:20,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:55:20,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16] total 23 [2021-02-19 19:55:20,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304145095] [2021-02-19 19:55:20,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 19:55:20,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:55:20,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 19:55:20,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:55:20,580 INFO L87 Difference]: Start difference. First operand 46981 states and 119175 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:55:22,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:55:22,261 INFO L93 Difference]: Finished difference Result 50920 states and 128844 transitions. [2021-02-19 19:55:22,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-02-19 19:55:22,261 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-02-19 19:55:22,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:55:22,341 INFO L225 Difference]: With dead ends: 50920 [2021-02-19 19:55:22,341 INFO L226 Difference]: Without dead ends: 50913 [2021-02-19 19:55:22,341 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:55:22,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50913 states. [2021-02-19 19:55:23,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50913 to 49976. [2021-02-19 19:55:23,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49976 states, 49975 states have (on average 2.542091045522761) internal successors, (127041), 49975 states have internal predecessors, (127041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:55:23,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49976 states to 49976 states and 127041 transitions. [2021-02-19 19:55:23,268 INFO L78 Accepts]: Start accepts. Automaton has 49976 states and 127041 transitions. Word has length 42 [2021-02-19 19:55:23,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:55:23,268 INFO L480 AbstractCegarLoop]: Abstraction has 49976 states and 127041 transitions. [2021-02-19 19:55:23,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:55:23,268 INFO L276 IsEmpty]: Start isEmpty. Operand 49976 states and 127041 transitions. [2021-02-19 19:55:23,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-19 19:55:23,297 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:55:23,298 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:55:23,498 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3719 [2021-02-19 19:55:23,498 INFO L428 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:55:23,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:55:23,499 INFO L82 PathProgramCache]: Analyzing trace with hash 441982829, now seen corresponding path program 137 times [2021-02-19 19:55:23,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:55:23,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618068948] [2021-02-19 19:55:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:55:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:55:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:55:23,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618068948] [2021-02-19 19:55:23,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450594255] [2021-02-19 19:55:23,566 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 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 [2021-02-19 19:55:23,596 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-02-19 19:55:23,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:55:23,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 51 conjunts are in the unsatisfiable core [2021-02-19 19:55:23,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:55:24,383 WARN L202 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 291 DAG size of output: 79 [2021-02-19 19:55:24,383 INFO L354 Elim1Store]: treesize reduction 751, result has 24.2 percent of original size [2021-02-19 19:55:24,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 18 new quantified variables, introduced 66 case distinctions, treesize of input 187 treesize of output 314 [2021-02-19 19:55:24,387 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:24,463 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:55:24,464 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:55:24,464 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:187, output treesize:404 [2021-02-19 19:55:25,935 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2021-02-19 19:55:26,232 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:26,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 206 treesize of output 57 [2021-02-19 19:55:26,235 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:26,314 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:26,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 215 treesize of output 62 [2021-02-19 19:55:26,317 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:26,395 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:26,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 59 [2021-02-19 19:55:26,397 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:26,475 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:26,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 192 treesize of output 55 [2021-02-19 19:55:26,477 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:26,555 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:26,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 1 [2021-02-19 19:55:26,556 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:26,630 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:26,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 227 treesize of output 62 [2021-02-19 19:55:26,632 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:26,708 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:26,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 222 treesize of output 61 [2021-02-19 19:55:26,710 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:26,786 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:26,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 214 treesize of output 61 [2021-02-19 19:55:26,788 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:26,865 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:26,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:26,868 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:26,948 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:26,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 224 treesize of output 63 [2021-02-19 19:55:26,951 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:27,030 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:27,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 214 treesize of output 61 [2021-02-19 19:55:27,032 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:27,121 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:27,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 205 treesize of output 1 [2021-02-19 19:55:27,122 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:27,222 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:55:27,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 206 treesize of output 65 [2021-02-19 19:55:27,225 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:27,305 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:27,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 209 treesize of output 60 [2021-02-19 19:55:27,307 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:27,389 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:27,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 186 treesize of output 55 [2021-02-19 19:55:27,391 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:27,473 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:27,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 164 treesize of output 51 [2021-02-19 19:55:27,475 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:27,559 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:27,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 218 treesize of output 63 [2021-02-19 19:55:27,561 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:27,644 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:27,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 224 treesize of output 63 [2021-02-19 19:55:27,646 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:27,728 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:27,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 190 treesize of output 57 [2021-02-19 19:55:27,730 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:27,816 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:27,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 232 treesize of output 63 [2021-02-19 19:55:27,818 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:27,902 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:27,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 182 treesize of output 53 [2021-02-19 19:55:27,904 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:27,997 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:27,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 213 treesize of output 1 [2021-02-19 19:55:27,998 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:28,122 INFO L354 Elim1Store]: treesize reduction 113, result has 6.6 percent of original size [2021-02-19 19:55:28,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 210 treesize of output 68 [2021-02-19 19:55:28,124 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:28,216 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:28,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:28,218 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:28,305 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:28,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:28,307 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:28,400 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:28,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 219 treesize of output 62 [2021-02-19 19:55:28,403 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:28,500 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:28,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 172 treesize of output 51 [2021-02-19 19:55:28,502 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:28,593 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:28,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 206 treesize of output 57 [2021-02-19 19:55:28,595 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:28,690 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:28,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 210 treesize of output 61 [2021-02-19 19:55:28,693 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:28,786 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:28,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 211 treesize of output 62 [2021-02-19 19:55:28,788 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:28,879 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:28,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 184 treesize of output 55 [2021-02-19 19:55:28,881 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:28,984 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:28,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 208 treesize of output 59 [2021-02-19 19:55:28,986 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:29,086 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:29,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 208 treesize of output 59 [2021-02-19 19:55:29,088 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:29,194 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:29,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 214 treesize of output 61 [2021-02-19 19:55:29,196 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:29,313 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:29,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 230 treesize of output 65 [2021-02-19 19:55:29,315 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:29,410 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:29,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 210 treesize of output 61 [2021-02-19 19:55:29,412 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:29,513 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:29,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 214 treesize of output 61 [2021-02-19 19:55:29,515 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:29,614 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:29,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:29,616 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:29,719 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:29,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 211 treesize of output 62 [2021-02-19 19:55:29,721 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:29,818 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:29,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 213 treesize of output 62 [2021-02-19 19:55:29,820 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:29,917 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:29,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 217 treesize of output 60 [2021-02-19 19:55:29,919 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:30,021 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:30,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 190 treesize of output 57 [2021-02-19 19:55:30,023 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:30,127 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:30,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:30,130 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:30,232 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:30,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 214 treesize of output 61 [2021-02-19 19:55:30,234 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:30,336 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:30,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 206 treesize of output 57 [2021-02-19 19:55:30,338 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:30,445 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:30,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:30,447 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:30,550 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:30,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 60 [2021-02-19 19:55:30,552 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:30,654 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:30,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:30,656 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:30,757 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:30,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 228 treesize of output 65 [2021-02-19 19:55:30,760 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:30,865 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:30,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 207 treesize of output 58 [2021-02-19 19:55:30,867 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:30,971 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:30,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 222 treesize of output 61 [2021-02-19 19:55:30,973 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:31,080 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:31,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 191 treesize of output 54 [2021-02-19 19:55:31,082 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:31,188 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:31,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 58 [2021-02-19 19:55:31,190 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:31,296 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:31,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 214 treesize of output 61 [2021-02-19 19:55:31,299 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:31,407 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:31,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 59 [2021-02-19 19:55:31,410 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:31,527 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:31,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 185 treesize of output 56 [2021-02-19 19:55:31,530 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:31,650 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:31,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:31,652 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:31,758 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:31,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 169 treesize of output 52 [2021-02-19 19:55:31,760 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:31,866 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:31,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 213 treesize of output 60 [2021-02-19 19:55:31,868 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:31,977 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:31,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 211 treesize of output 60 [2021-02-19 19:55:31,980 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:32,093 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:32,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 205 treesize of output 60 [2021-02-19 19:55:32,095 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:32,208 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:32,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:32,210 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:32,339 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:32,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 177 treesize of output 52 [2021-02-19 19:55:32,342 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:32,476 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:32,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 196 treesize of output 55 [2021-02-19 19:55:32,478 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:32,601 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:32,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 227 treesize of output 62 [2021-02-19 19:55:32,603 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:32,720 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:32,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 169 treesize of output 52 [2021-02-19 19:55:32,722 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:32,841 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:32,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:32,843 INFO L550 ElimStorePlain]: Start of recursive call 68: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:32,959 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:32,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 59 [2021-02-19 19:55:32,962 INFO L550 ElimStorePlain]: Start of recursive call 69: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:33,078 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:33,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 217 treesize of output 60 [2021-02-19 19:55:33,081 INFO L550 ElimStorePlain]: Start of recursive call 70: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:33,194 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:33,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 205 treesize of output 60 [2021-02-19 19:55:33,196 INFO L550 ElimStorePlain]: Start of recursive call 71: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:33,314 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:33,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 205 treesize of output 60 [2021-02-19 19:55:33,316 INFO L550 ElimStorePlain]: Start of recursive call 72: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:33,431 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:33,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:33,433 INFO L550 ElimStorePlain]: Start of recursive call 73: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:33,551 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:33,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:33,553 INFO L550 ElimStorePlain]: Start of recursive call 74: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:33,668 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:33,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 177 treesize of output 52 [2021-02-19 19:55:33,670 INFO L550 ElimStorePlain]: Start of recursive call 75: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:33,788 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:33,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:33,790 INFO L550 ElimStorePlain]: Start of recursive call 76: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:33,936 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:33,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 224 treesize of output 63 [2021-02-19 19:55:33,938 INFO L550 ElimStorePlain]: Start of recursive call 77: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:34,053 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:34,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 204 treesize of output 59 [2021-02-19 19:55:34,056 INFO L550 ElimStorePlain]: Start of recursive call 78: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:34,173 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:34,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 205 treesize of output 60 [2021-02-19 19:55:34,175 INFO L550 ElimStorePlain]: Start of recursive call 79: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:34,292 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:34,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:34,294 INFO L550 ElimStorePlain]: Start of recursive call 80: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:34,413 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:34,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 210 treesize of output 61 [2021-02-19 19:55:34,415 INFO L550 ElimStorePlain]: Start of recursive call 81: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:34,540 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:34,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 190 treesize of output 57 [2021-02-19 19:55:34,542 INFO L550 ElimStorePlain]: Start of recursive call 82: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:34,664 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:34,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 184 treesize of output 55 [2021-02-19 19:55:34,667 INFO L550 ElimStorePlain]: Start of recursive call 83: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:34,815 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:55:34,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 211 treesize of output 66 [2021-02-19 19:55:34,818 INFO L550 ElimStorePlain]: Start of recursive call 84: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:34,941 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:34,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 188 treesize of output 55 [2021-02-19 19:55:34,943 INFO L550 ElimStorePlain]: Start of recursive call 85: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:35,067 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:35,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 206 treesize of output 59 [2021-02-19 19:55:35,069 INFO L550 ElimStorePlain]: Start of recursive call 86: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:35,199 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:35,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 59 [2021-02-19 19:55:35,201 INFO L550 ElimStorePlain]: Start of recursive call 87: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:35,326 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:35,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 214 treesize of output 61 [2021-02-19 19:55:35,328 INFO L550 ElimStorePlain]: Start of recursive call 88: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:35,452 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:35,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 219 treesize of output 62 [2021-02-19 19:55:35,455 INFO L550 ElimStorePlain]: Start of recursive call 89: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:35,579 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:35,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 230 treesize of output 65 [2021-02-19 19:55:35,581 INFO L550 ElimStorePlain]: Start of recursive call 90: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:35,706 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:35,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 222 treesize of output 61 [2021-02-19 19:55:35,708 INFO L550 ElimStorePlain]: Start of recursive call 91: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:35,832 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:35,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 219 treesize of output 62 [2021-02-19 19:55:35,834 INFO L550 ElimStorePlain]: Start of recursive call 92: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:35,973 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:55:35,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 206 treesize of output 65 [2021-02-19 19:55:35,975 INFO L550 ElimStorePlain]: Start of recursive call 93: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:36,104 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:36,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 234 treesize of output 65 [2021-02-19 19:55:36,106 INFO L550 ElimStorePlain]: Start of recursive call 94: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:36,297 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:36,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:36,299 INFO L550 ElimStorePlain]: Start of recursive call 95: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:36,371 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:36,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:36,373 INFO L550 ElimStorePlain]: Start of recursive call 96: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:36,440 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:36,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 211 treesize of output 62 [2021-02-19 19:55:36,443 INFO L550 ElimStorePlain]: Start of recursive call 97: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:36,511 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:36,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 218 treesize of output 61 [2021-02-19 19:55:36,514 INFO L550 ElimStorePlain]: Start of recursive call 98: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:36,583 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:36,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 223 treesize of output 64 [2021-02-19 19:55:36,585 INFO L550 ElimStorePlain]: Start of recursive call 99: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:36,659 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:36,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 217 treesize of output 60 [2021-02-19 19:55:36,662 INFO L550 ElimStorePlain]: Start of recursive call 100: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:36,734 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:36,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 172 treesize of output 51 [2021-02-19 19:55:36,736 INFO L550 ElimStorePlain]: Start of recursive call 101: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:36,873 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:36,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 212 treesize of output 59 [2021-02-19 19:55:36,875 INFO L550 ElimStorePlain]: Start of recursive call 102: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:36,943 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:36,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 224 treesize of output 63 [2021-02-19 19:55:36,946 INFO L550 ElimStorePlain]: Start of recursive call 103: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:37,010 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:37,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 224 treesize of output 63 [2021-02-19 19:55:37,012 INFO L550 ElimStorePlain]: Start of recursive call 104: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:37,074 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:37,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 211 treesize of output 60 [2021-02-19 19:55:37,076 INFO L550 ElimStorePlain]: Start of recursive call 105: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:37,139 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:37,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 227 treesize of output 62 [2021-02-19 19:55:37,141 INFO L550 ElimStorePlain]: Start of recursive call 106: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:37,221 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:55:37,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 216 treesize of output 67 [2021-02-19 19:55:37,224 INFO L550 ElimStorePlain]: Start of recursive call 107: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:37,288 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:37,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 206 treesize of output 61 [2021-02-19 19:55:37,290 INFO L550 ElimStorePlain]: Start of recursive call 108: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:37,358 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:37,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 208 treesize of output 59 [2021-02-19 19:55:37,360 INFO L550 ElimStorePlain]: Start of recursive call 109: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:37,426 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:37,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 169 treesize of output 52 [2021-02-19 19:55:37,428 INFO L550 ElimStorePlain]: Start of recursive call 110: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:37,499 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:37,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 206 treesize of output 57 [2021-02-19 19:55:37,502 INFO L550 ElimStorePlain]: Start of recursive call 111: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:37,577 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:37,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 214 treesize of output 61 [2021-02-19 19:55:37,579 INFO L550 ElimStorePlain]: Start of recursive call 112: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:37,666 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:37,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 188 treesize of output 55 [2021-02-19 19:55:37,668 INFO L550 ElimStorePlain]: Start of recursive call 113: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:37,756 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:37,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 205 treesize of output 60 [2021-02-19 19:55:37,759 INFO L550 ElimStorePlain]: Start of recursive call 114: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:37,841 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:37,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:37,844 INFO L550 ElimStorePlain]: Start of recursive call 115: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:37,943 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:37,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 210 treesize of output 61 [2021-02-19 19:55:37,945 INFO L550 ElimStorePlain]: Start of recursive call 116: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:38,023 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:38,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 212 treesize of output 59 [2021-02-19 19:55:38,026 INFO L550 ElimStorePlain]: Start of recursive call 117: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:38,126 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:55:38,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 226 treesize of output 69 [2021-02-19 19:55:38,129 INFO L550 ElimStorePlain]: Start of recursive call 118: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:38,214 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:38,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:38,216 INFO L550 ElimStorePlain]: Start of recursive call 119: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:38,296 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:38,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 183 treesize of output 54 [2021-02-19 19:55:38,298 INFO L550 ElimStorePlain]: Start of recursive call 120: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:38,379 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:38,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 208 treesize of output 59 [2021-02-19 19:55:38,381 INFO L550 ElimStorePlain]: Start of recursive call 121: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:38,460 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:38,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 201 treesize of output 58 [2021-02-19 19:55:38,462 INFO L550 ElimStorePlain]: Start of recursive call 122: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:38,541 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:38,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 174 treesize of output 53 [2021-02-19 19:55:38,543 INFO L550 ElimStorePlain]: Start of recursive call 123: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:38,634 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:38,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 206 treesize of output 59 [2021-02-19 19:55:38,636 INFO L550 ElimStorePlain]: Start of recursive call 124: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:38,716 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:38,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 58 [2021-02-19 19:55:38,718 INFO L550 ElimStorePlain]: Start of recursive call 125: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:38,797 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:38,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 216 treesize of output 63 [2021-02-19 19:55:38,800 INFO L550 ElimStorePlain]: Start of recursive call 126: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:38,884 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:38,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 167 treesize of output 50 [2021-02-19 19:55:38,886 INFO L550 ElimStorePlain]: Start of recursive call 127: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:38,967 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:38,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 201 treesize of output 56 [2021-02-19 19:55:38,969 INFO L550 ElimStorePlain]: Start of recursive call 128: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:39,051 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:39,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 219 treesize of output 62 [2021-02-19 19:55:39,054 INFO L550 ElimStorePlain]: Start of recursive call 129: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:39,137 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:39,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 201 treesize of output 56 [2021-02-19 19:55:39,139 INFO L550 ElimStorePlain]: Start of recursive call 130: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:39,229 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:39,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 186 treesize of output 53 [2021-02-19 19:55:39,231 INFO L550 ElimStorePlain]: Start of recursive call 131: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:39,314 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:39,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 206 treesize of output 57 [2021-02-19 19:55:39,316 INFO L550 ElimStorePlain]: Start of recursive call 132: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:39,419 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:55:39,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 211 treesize of output 66 [2021-02-19 19:55:39,421 INFO L550 ElimStorePlain]: Start of recursive call 133: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:39,506 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:39,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 58 [2021-02-19 19:55:39,508 INFO L550 ElimStorePlain]: Start of recursive call 134: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:39,591 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:39,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 185 treesize of output 56 [2021-02-19 19:55:39,594 INFO L550 ElimStorePlain]: Start of recursive call 135: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:39,679 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:39,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 215 treesize of output 62 [2021-02-19 19:55:39,681 INFO L550 ElimStorePlain]: Start of recursive call 136: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:39,773 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:39,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:39,775 INFO L550 ElimStorePlain]: Start of recursive call 137: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:39,861 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:39,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 221 treesize of output 64 [2021-02-19 19:55:39,863 INFO L550 ElimStorePlain]: Start of recursive call 138: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:39,950 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:39,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 196 treesize of output 57 [2021-02-19 19:55:39,952 INFO L550 ElimStorePlain]: Start of recursive call 139: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:40,039 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:40,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 205 treesize of output 60 [2021-02-19 19:55:40,041 INFO L550 ElimStorePlain]: Start of recursive call 140: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:40,126 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:40,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 206 treesize of output 57 [2021-02-19 19:55:40,128 INFO L550 ElimStorePlain]: Start of recursive call 141: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:40,212 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:40,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 179 treesize of output 54 [2021-02-19 19:55:40,214 INFO L550 ElimStorePlain]: Start of recursive call 142: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:40,305 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:40,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 199 treesize of output 58 [2021-02-19 19:55:40,307 INFO L550 ElimStorePlain]: Start of recursive call 143: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:40,399 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:40,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 221 treesize of output 64 [2021-02-19 19:55:40,401 INFO L550 ElimStorePlain]: Start of recursive call 144: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:40,487 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:40,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 188 treesize of output 55 [2021-02-19 19:55:40,488 INFO L550 ElimStorePlain]: Start of recursive call 145: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:40,576 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:40,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 225 treesize of output 64 [2021-02-19 19:55:40,578 INFO L550 ElimStorePlain]: Start of recursive call 146: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:40,666 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:40,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 224 treesize of output 63 [2021-02-19 19:55:40,668 INFO L550 ElimStorePlain]: Start of recursive call 147: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:40,753 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:40,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 196 treesize of output 55 [2021-02-19 19:55:40,755 INFO L550 ElimStorePlain]: Start of recursive call 148: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:40,840 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:40,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:40,842 INFO L550 ElimStorePlain]: Start of recursive call 149: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:40,927 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:40,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 196 treesize of output 55 [2021-02-19 19:55:40,928 INFO L550 ElimStorePlain]: Start of recursive call 150: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:41,015 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:41,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 242 treesize of output 65 [2021-02-19 19:55:41,018 INFO L550 ElimStorePlain]: Start of recursive call 151: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:41,106 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:41,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 58 [2021-02-19 19:55:41,108 INFO L550 ElimStorePlain]: Start of recursive call 152: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:41,195 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:41,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 229 treesize of output 64 [2021-02-19 19:55:41,197 INFO L550 ElimStorePlain]: Start of recursive call 153: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:41,285 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:41,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 222 treesize of output 61 [2021-02-19 19:55:41,287 INFO L550 ElimStorePlain]: Start of recursive call 154: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:41,374 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:41,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 188 treesize of output 55 [2021-02-19 19:55:41,376 INFO L550 ElimStorePlain]: Start of recursive call 155: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:41,463 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:41,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 217 treesize of output 60 [2021-02-19 19:55:41,465 INFO L550 ElimStorePlain]: Start of recursive call 156: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:41,552 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:41,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 224 treesize of output 63 [2021-02-19 19:55:41,554 INFO L550 ElimStorePlain]: Start of recursive call 157: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:41,645 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:41,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 233 treesize of output 66 [2021-02-19 19:55:41,648 INFO L550 ElimStorePlain]: Start of recursive call 158: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:41,738 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:41,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 230 treesize of output 65 [2021-02-19 19:55:41,740 INFO L550 ElimStorePlain]: Start of recursive call 159: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:41,834 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:41,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 209 treesize of output 60 [2021-02-19 19:55:41,836 INFO L550 ElimStorePlain]: Start of recursive call 160: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:41,928 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:41,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 183 treesize of output 54 [2021-02-19 19:55:41,930 INFO L550 ElimStorePlain]: Start of recursive call 161: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:42,024 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:42,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 191 treesize of output 54 [2021-02-19 19:55:42,026 INFO L550 ElimStorePlain]: Start of recursive call 162: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:42,120 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:42,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 204 treesize of output 59 [2021-02-19 19:55:42,122 INFO L550 ElimStorePlain]: Start of recursive call 163: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:42,215 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:42,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 219 treesize of output 62 [2021-02-19 19:55:42,217 INFO L550 ElimStorePlain]: Start of recursive call 164: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:42,311 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:42,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 212 treesize of output 59 [2021-02-19 19:55:42,313 INFO L550 ElimStorePlain]: Start of recursive call 165: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:42,408 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:42,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 206 treesize of output 59 [2021-02-19 19:55:42,411 INFO L550 ElimStorePlain]: Start of recursive call 166: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:42,506 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:42,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:42,508 INFO L550 ElimStorePlain]: Start of recursive call 167: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:42,601 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:42,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 214 treesize of output 61 [2021-02-19 19:55:42,603 INFO L550 ElimStorePlain]: Start of recursive call 168: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:42,705 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:42,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 188 treesize of output 55 [2021-02-19 19:55:42,706 INFO L550 ElimStorePlain]: Start of recursive call 169: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:42,809 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:42,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:42,811 INFO L550 ElimStorePlain]: Start of recursive call 170: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:42,916 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:42,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 58 [2021-02-19 19:55:42,918 INFO L550 ElimStorePlain]: Start of recursive call 171: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:43,027 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:43,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 177 treesize of output 52 [2021-02-19 19:55:43,029 INFO L550 ElimStorePlain]: Start of recursive call 172: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:43,134 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:43,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 178 treesize of output 53 [2021-02-19 19:55:43,137 INFO L550 ElimStorePlain]: Start of recursive call 173: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:43,233 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:43,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 59 [2021-02-19 19:55:43,235 INFO L550 ElimStorePlain]: Start of recursive call 174: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:43,352 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:43,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 59 [2021-02-19 19:55:43,354 INFO L550 ElimStorePlain]: Start of recursive call 175: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:43,452 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:43,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 208 treesize of output 59 [2021-02-19 19:55:43,454 INFO L550 ElimStorePlain]: Start of recursive call 176: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:43,553 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:43,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 209 treesize of output 60 [2021-02-19 19:55:43,555 INFO L550 ElimStorePlain]: Start of recursive call 177: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:43,653 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:43,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 177 treesize of output 52 [2021-02-19 19:55:43,655 INFO L550 ElimStorePlain]: Start of recursive call 178: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:43,754 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:43,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:43,756 INFO L550 ElimStorePlain]: Start of recursive call 179: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:43,869 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:55:43,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 216 treesize of output 67 [2021-02-19 19:55:43,872 INFO L550 ElimStorePlain]: Start of recursive call 180: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:43,971 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:43,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 201 treesize of output 58 [2021-02-19 19:55:43,973 INFO L550 ElimStorePlain]: Start of recursive call 181: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:44,074 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:44,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 211 treesize of output 58 [2021-02-19 19:55:44,076 INFO L550 ElimStorePlain]: Start of recursive call 182: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:44,179 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:44,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 208 treesize of output 59 [2021-02-19 19:55:44,181 INFO L550 ElimStorePlain]: Start of recursive call 183: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:44,283 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:44,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:44,285 INFO L550 ElimStorePlain]: Start of recursive call 184: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:44,387 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:44,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 205 treesize of output 60 [2021-02-19 19:55:44,389 INFO L550 ElimStorePlain]: Start of recursive call 185: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:44,495 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:44,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 208 treesize of output 59 [2021-02-19 19:55:44,497 INFO L550 ElimStorePlain]: Start of recursive call 186: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:44,618 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:44,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 58 [2021-02-19 19:55:44,620 INFO L550 ElimStorePlain]: Start of recursive call 187: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:44,681 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:44,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 196 treesize of output 57 [2021-02-19 19:55:44,683 INFO L550 ElimStorePlain]: Start of recursive call 188: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:44,746 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:44,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 205 treesize of output 60 [2021-02-19 19:55:44,747 INFO L550 ElimStorePlain]: Start of recursive call 189: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:44,805 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:44,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 224 treesize of output 63 [2021-02-19 19:55:44,808 INFO L550 ElimStorePlain]: Start of recursive call 190: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:44,869 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:44,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 210 treesize of output 61 [2021-02-19 19:55:44,871 INFO L550 ElimStorePlain]: Start of recursive call 191: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:44,928 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:44,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 227 treesize of output 62 [2021-02-19 19:55:44,930 INFO L550 ElimStorePlain]: Start of recursive call 192: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:44,988 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:44,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 213 treesize of output 62 [2021-02-19 19:55:44,990 INFO L550 ElimStorePlain]: Start of recursive call 193: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:45,050 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:45,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 216 treesize of output 63 [2021-02-19 19:55:45,052 INFO L550 ElimStorePlain]: Start of recursive call 194: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:45,110 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:45,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 58 [2021-02-19 19:55:45,112 INFO L550 ElimStorePlain]: Start of recursive call 195: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:45,177 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:45,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 220 treesize of output 63 [2021-02-19 19:55:45,179 INFO L550 ElimStorePlain]: Start of recursive call 196: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:45,241 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:45,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 188 treesize of output 55 [2021-02-19 19:55:45,243 INFO L550 ElimStorePlain]: Start of recursive call 197: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:45,318 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:55:45,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 211 treesize of output 66 [2021-02-19 19:55:45,320 INFO L550 ElimStorePlain]: Start of recursive call 198: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:45,384 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:45,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 205 treesize of output 60 [2021-02-19 19:55:45,386 INFO L550 ElimStorePlain]: Start of recursive call 199: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:45,454 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:45,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 219 treesize of output 62 [2021-02-19 19:55:45,456 INFO L550 ElimStorePlain]: Start of recursive call 200: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:45,518 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:45,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 219 treesize of output 62 [2021-02-19 19:55:45,520 INFO L550 ElimStorePlain]: Start of recursive call 201: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:45,583 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:45,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:45,585 INFO L550 ElimStorePlain]: Start of recursive call 202: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:45,648 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:45,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:45,650 INFO L550 ElimStorePlain]: Start of recursive call 203: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:45,714 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:45,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 209 treesize of output 60 [2021-02-19 19:55:45,716 INFO L550 ElimStorePlain]: Start of recursive call 204: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:45,778 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:45,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 225 treesize of output 64 [2021-02-19 19:55:45,780 INFO L550 ElimStorePlain]: Start of recursive call 205: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:45,842 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:45,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 205 treesize of output 60 [2021-02-19 19:55:45,844 INFO L550 ElimStorePlain]: Start of recursive call 206: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:45,907 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:45,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 205 treesize of output 60 [2021-02-19 19:55:45,909 INFO L550 ElimStorePlain]: Start of recursive call 207: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:45,988 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:55:45,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 216 treesize of output 67 [2021-02-19 19:55:45,990 INFO L550 ElimStorePlain]: Start of recursive call 208: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:46,058 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:46,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 217 treesize of output 60 [2021-02-19 19:55:46,060 INFO L550 ElimStorePlain]: Start of recursive call 209: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:46,127 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:46,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 183 treesize of output 54 [2021-02-19 19:55:46,129 INFO L550 ElimStorePlain]: Start of recursive call 210: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:46,196 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:46,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 190 treesize of output 57 [2021-02-19 19:55:46,199 INFO L550 ElimStorePlain]: Start of recursive call 211: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:46,265 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:46,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 185 treesize of output 56 [2021-02-19 19:55:46,268 INFO L550 ElimStorePlain]: Start of recursive call 212: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:46,335 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:46,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 214 treesize of output 61 [2021-02-19 19:55:46,338 INFO L550 ElimStorePlain]: Start of recursive call 213: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:46,406 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:46,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:46,408 INFO L550 ElimStorePlain]: Start of recursive call 214: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:46,475 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:46,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 188 treesize of output 55 [2021-02-19 19:55:46,477 INFO L550 ElimStorePlain]: Start of recursive call 215: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:46,546 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:46,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:46,548 INFO L550 ElimStorePlain]: Start of recursive call 216: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:46,615 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:46,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 201 treesize of output 58 [2021-02-19 19:55:46,617 INFO L550 ElimStorePlain]: Start of recursive call 217: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:46,683 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:46,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 208 treesize of output 59 [2021-02-19 19:55:46,685 INFO L550 ElimStorePlain]: Start of recursive call 218: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:46,754 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:46,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 228 treesize of output 65 [2021-02-19 19:55:46,756 INFO L550 ElimStorePlain]: Start of recursive call 219: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:46,825 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:46,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 174 treesize of output 53 [2021-02-19 19:55:46,827 INFO L550 ElimStorePlain]: Start of recursive call 220: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:46,895 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:46,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 219 treesize of output 62 [2021-02-19 19:55:46,898 INFO L550 ElimStorePlain]: Start of recursive call 221: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:46,966 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:46,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 167 treesize of output 50 [2021-02-19 19:55:46,968 INFO L550 ElimStorePlain]: Start of recursive call 222: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:47,039 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:47,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 225 treesize of output 64 [2021-02-19 19:55:47,041 INFO L550 ElimStorePlain]: Start of recursive call 223: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:47,113 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:47,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 237 treesize of output 64 [2021-02-19 19:55:47,115 INFO L550 ElimStorePlain]: Start of recursive call 224: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:47,186 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:47,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:47,188 INFO L550 ElimStorePlain]: Start of recursive call 225: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:47,260 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:47,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 196 treesize of output 55 [2021-02-19 19:55:47,261 INFO L550 ElimStorePlain]: Start of recursive call 226: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:47,335 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:47,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:47,337 INFO L550 ElimStorePlain]: Start of recursive call 227: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:47,408 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:47,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 59 [2021-02-19 19:55:47,410 INFO L550 ElimStorePlain]: Start of recursive call 228: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:47,481 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:47,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 213 treesize of output 60 [2021-02-19 19:55:47,483 INFO L550 ElimStorePlain]: Start of recursive call 229: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:47,557 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:47,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:47,559 INFO L550 ElimStorePlain]: Start of recursive call 230: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:47,635 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:47,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:47,636 INFO L550 ElimStorePlain]: Start of recursive call 231: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:47,710 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:47,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 232 treesize of output 63 [2021-02-19 19:55:47,712 INFO L550 ElimStorePlain]: Start of recursive call 232: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:47,785 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:47,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 221 treesize of output 64 [2021-02-19 19:55:47,787 INFO L550 ElimStorePlain]: Start of recursive call 233: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:47,877 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:55:47,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 206 treesize of output 65 [2021-02-19 19:55:47,879 INFO L550 ElimStorePlain]: Start of recursive call 234: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:47,956 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:47,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 216 treesize of output 59 [2021-02-19 19:55:47,958 INFO L550 ElimStorePlain]: Start of recursive call 235: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:48,034 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:48,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 222 treesize of output 61 [2021-02-19 19:55:48,036 INFO L550 ElimStorePlain]: Start of recursive call 236: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:48,110 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:48,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 223 treesize of output 64 [2021-02-19 19:55:48,112 INFO L550 ElimStorePlain]: Start of recursive call 237: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:48,189 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:48,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 182 treesize of output 53 [2021-02-19 19:55:48,191 INFO L550 ElimStorePlain]: Start of recursive call 238: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:48,271 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:48,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 220 treesize of output 63 [2021-02-19 19:55:48,273 INFO L550 ElimStorePlain]: Start of recursive call 239: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:48,351 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:48,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 231 treesize of output 66 [2021-02-19 19:55:48,354 INFO L550 ElimStorePlain]: Start of recursive call 240: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:48,430 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:48,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 196 treesize of output 55 [2021-02-19 19:55:48,432 INFO L550 ElimStorePlain]: Start of recursive call 241: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:48,507 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:48,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 208 treesize of output 59 [2021-02-19 19:55:48,509 INFO L550 ElimStorePlain]: Start of recursive call 242: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:48,585 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:48,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 208 treesize of output 59 [2021-02-19 19:55:48,587 INFO L550 ElimStorePlain]: Start of recursive call 243: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:48,664 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:48,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 172 treesize of output 51 [2021-02-19 19:55:48,666 INFO L550 ElimStorePlain]: Start of recursive call 244: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:48,742 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:48,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 58 [2021-02-19 19:55:48,744 INFO L550 ElimStorePlain]: Start of recursive call 245: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:48,821 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:48,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 58 [2021-02-19 19:55:48,823 INFO L550 ElimStorePlain]: Start of recursive call 246: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:48,906 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:48,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:48,908 INFO L550 ElimStorePlain]: Start of recursive call 247: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:48,987 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:48,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 218 treesize of output 63 [2021-02-19 19:55:48,989 INFO L550 ElimStorePlain]: Start of recursive call 248: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:49,067 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:49,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 209 treesize of output 60 [2021-02-19 19:55:49,069 INFO L550 ElimStorePlain]: Start of recursive call 249: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:49,150 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:49,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:49,152 INFO L550 ElimStorePlain]: Start of recursive call 250: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:49,232 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:49,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 219 treesize of output 62 [2021-02-19 19:55:49,234 INFO L550 ElimStorePlain]: Start of recursive call 251: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:49,315 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:49,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:49,317 INFO L550 ElimStorePlain]: Start of recursive call 252: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:49,397 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:49,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:49,399 INFO L550 ElimStorePlain]: Start of recursive call 253: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:49,495 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:55:49,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 221 treesize of output 68 [2021-02-19 19:55:49,498 INFO L550 ElimStorePlain]: Start of recursive call 254: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:49,602 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:55:49,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 216 treesize of output 67 [2021-02-19 19:55:49,604 INFO L550 ElimStorePlain]: Start of recursive call 255: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:49,687 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:49,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 229 treesize of output 64 [2021-02-19 19:55:49,690 INFO L550 ElimStorePlain]: Start of recursive call 256: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:49,773 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:49,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 177 treesize of output 52 [2021-02-19 19:55:49,776 INFO L550 ElimStorePlain]: Start of recursive call 257: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:49,859 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:49,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 222 treesize of output 61 [2021-02-19 19:55:49,861 INFO L550 ElimStorePlain]: Start of recursive call 258: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:49,942 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:49,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 179 treesize of output 54 [2021-02-19 19:55:49,944 INFO L550 ElimStorePlain]: Start of recursive call 259: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:50,031 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:50,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:50,033 INFO L550 ElimStorePlain]: Start of recursive call 260: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:50,117 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:50,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 208 treesize of output 59 [2021-02-19 19:55:50,120 INFO L550 ElimStorePlain]: Start of recursive call 261: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:50,199 INFO L354 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2021-02-19 19:55:50,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 162 treesize of output 46 [2021-02-19 19:55:50,201 INFO L550 ElimStorePlain]: Start of recursive call 262: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:50,286 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:50,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:50,289 INFO L550 ElimStorePlain]: Start of recursive call 263: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:50,372 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:50,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 216 treesize of output 63 [2021-02-19 19:55:50,374 INFO L550 ElimStorePlain]: Start of recursive call 264: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:50,460 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:50,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:50,462 INFO L550 ElimStorePlain]: Start of recursive call 265: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:50,548 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:50,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 204 treesize of output 59 [2021-02-19 19:55:50,550 INFO L550 ElimStorePlain]: Start of recursive call 266: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:50,636 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:50,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 227 treesize of output 62 [2021-02-19 19:55:50,638 INFO L550 ElimStorePlain]: Start of recursive call 267: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:50,722 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:50,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 213 treesize of output 62 [2021-02-19 19:55:50,724 INFO L550 ElimStorePlain]: Start of recursive call 268: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:50,809 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:50,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 188 treesize of output 55 [2021-02-19 19:55:50,811 INFO L550 ElimStorePlain]: Start of recursive call 269: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:50,896 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:50,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 232 treesize of output 63 [2021-02-19 19:55:50,898 INFO L550 ElimStorePlain]: Start of recursive call 270: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:50,984 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:50,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 235 treesize of output 66 [2021-02-19 19:55:50,986 INFO L550 ElimStorePlain]: Start of recursive call 271: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:51,073 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:51,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 232 treesize of output 63 [2021-02-19 19:55:51,075 INFO L550 ElimStorePlain]: Start of recursive call 272: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:51,160 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:51,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 58 [2021-02-19 19:55:51,162 INFO L550 ElimStorePlain]: Start of recursive call 273: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:51,247 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:51,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 237 treesize of output 64 [2021-02-19 19:55:51,249 INFO L550 ElimStorePlain]: Start of recursive call 274: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:51,335 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:51,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 226 treesize of output 65 [2021-02-19 19:55:51,337 INFO L550 ElimStorePlain]: Start of recursive call 275: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:51,430 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:51,430 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 177 treesize of output 52 [2021-02-19 19:55:51,432 INFO L550 ElimStorePlain]: Start of recursive call 276: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:51,519 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:51,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 229 treesize of output 64 [2021-02-19 19:55:51,521 INFO L550 ElimStorePlain]: Start of recursive call 277: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:51,613 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:51,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 232 treesize of output 63 [2021-02-19 19:55:51,615 INFO L550 ElimStorePlain]: Start of recursive call 278: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:51,664 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:51,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 196 treesize of output 57 [2021-02-19 19:55:51,667 INFO L550 ElimStorePlain]: Start of recursive call 279: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:51,716 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:51,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 215 treesize of output 62 [2021-02-19 19:55:51,718 INFO L550 ElimStorePlain]: Start of recursive call 280: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:51,767 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:51,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 58 [2021-02-19 19:55:51,769 INFO L550 ElimStorePlain]: Start of recursive call 281: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:51,820 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:51,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 190 treesize of output 57 [2021-02-19 19:55:51,823 INFO L550 ElimStorePlain]: Start of recursive call 282: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:51,882 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:51,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:51,884 INFO L550 ElimStorePlain]: Start of recursive call 283: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:51,935 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:51,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 187 treesize of output 54 [2021-02-19 19:55:51,936 INFO L550 ElimStorePlain]: Start of recursive call 284: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:51,989 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:51,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:51,991 INFO L550 ElimStorePlain]: Start of recursive call 285: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:52,042 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:52,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:52,044 INFO L550 ElimStorePlain]: Start of recursive call 286: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:52,096 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:52,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:52,098 INFO L550 ElimStorePlain]: Start of recursive call 287: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:52,148 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:52,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 177 treesize of output 52 [2021-02-19 19:55:52,150 INFO L550 ElimStorePlain]: Start of recursive call 288: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:52,200 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:52,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:52,202 INFO L550 ElimStorePlain]: Start of recursive call 289: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:52,254 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:52,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 191 treesize of output 54 [2021-02-19 19:55:52,256 INFO L550 ElimStorePlain]: Start of recursive call 290: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:52,307 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:52,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:52,309 INFO L550 ElimStorePlain]: Start of recursive call 291: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:52,360 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:52,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 217 treesize of output 60 [2021-02-19 19:55:52,362 INFO L550 ElimStorePlain]: Start of recursive call 292: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:52,414 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:52,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 208 treesize of output 61 [2021-02-19 19:55:52,416 INFO L550 ElimStorePlain]: Start of recursive call 293: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:52,468 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:52,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 226 treesize of output 65 [2021-02-19 19:55:52,471 INFO L550 ElimStorePlain]: Start of recursive call 294: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:52,524 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:52,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 201 treesize of output 56 [2021-02-19 19:55:52,526 INFO L550 ElimStorePlain]: Start of recursive call 295: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:52,579 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:52,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:52,582 INFO L550 ElimStorePlain]: Start of recursive call 296: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:52,636 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:52,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 216 treesize of output 63 [2021-02-19 19:55:52,638 INFO L550 ElimStorePlain]: Start of recursive call 297: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:52,691 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:52,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 218 treesize of output 63 [2021-02-19 19:55:52,693 INFO L550 ElimStorePlain]: Start of recursive call 298: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:52,747 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:52,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 179 treesize of output 54 [2021-02-19 19:55:52,749 INFO L550 ElimStorePlain]: Start of recursive call 299: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:52,812 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:52,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 211 treesize of output 60 [2021-02-19 19:55:52,814 INFO L550 ElimStorePlain]: Start of recursive call 300: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:52,871 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:52,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 182 treesize of output 53 [2021-02-19 19:55:52,873 INFO L550 ElimStorePlain]: Start of recursive call 301: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:52,930 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:52,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 223 treesize of output 64 [2021-02-19 19:55:52,932 INFO L550 ElimStorePlain]: Start of recursive call 302: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:52,985 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:52,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 196 treesize of output 57 [2021-02-19 19:55:52,987 INFO L550 ElimStorePlain]: Start of recursive call 303: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:53,042 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:53,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 190 treesize of output 57 [2021-02-19 19:55:53,044 INFO L550 ElimStorePlain]: Start of recursive call 304: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:53,107 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:53,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 59 [2021-02-19 19:55:53,109 INFO L550 ElimStorePlain]: Start of recursive call 305: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:53,164 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:53,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 221 treesize of output 64 [2021-02-19 19:55:53,166 INFO L550 ElimStorePlain]: Start of recursive call 306: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:53,220 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:53,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 172 treesize of output 51 [2021-02-19 19:55:53,222 INFO L550 ElimStorePlain]: Start of recursive call 307: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:53,276 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:53,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 215 treesize of output 62 [2021-02-19 19:55:53,278 INFO L550 ElimStorePlain]: Start of recursive call 308: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:53,333 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:53,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:53,335 INFO L550 ElimStorePlain]: Start of recursive call 309: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:53,390 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:53,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 225 treesize of output 64 [2021-02-19 19:55:53,392 INFO L550 ElimStorePlain]: Start of recursive call 310: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:53,448 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:53,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:53,450 INFO L550 ElimStorePlain]: Start of recursive call 311: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:53,506 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:53,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 219 treesize of output 62 [2021-02-19 19:55:53,508 INFO L550 ElimStorePlain]: Start of recursive call 312: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:53,564 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:53,564 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 179 treesize of output 54 [2021-02-19 19:55:53,565 INFO L550 ElimStorePlain]: Start of recursive call 313: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:53,622 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:53,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 188 treesize of output 55 [2021-02-19 19:55:53,624 INFO L550 ElimStorePlain]: Start of recursive call 314: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:53,682 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:53,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:53,685 INFO L550 ElimStorePlain]: Start of recursive call 315: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:53,742 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:53,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 59 [2021-02-19 19:55:53,744 INFO L550 ElimStorePlain]: Start of recursive call 316: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:53,801 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:53,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 189 treesize of output 56 [2021-02-19 19:55:53,803 INFO L550 ElimStorePlain]: Start of recursive call 317: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:53,860 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:53,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 206 treesize of output 61 [2021-02-19 19:55:53,862 INFO L550 ElimStorePlain]: Start of recursive call 318: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:53,919 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:53,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 196 treesize of output 55 [2021-02-19 19:55:53,921 INFO L550 ElimStorePlain]: Start of recursive call 319: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:53,979 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:53,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 58 [2021-02-19 19:55:53,981 INFO L550 ElimStorePlain]: Start of recursive call 320: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:54,039 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:54,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:54,042 INFO L550 ElimStorePlain]: Start of recursive call 321: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:54,101 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:54,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:54,103 INFO L550 ElimStorePlain]: Start of recursive call 322: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:54,162 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:54,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 191 treesize of output 56 [2021-02-19 19:55:54,164 INFO L550 ElimStorePlain]: Start of recursive call 323: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:54,223 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:54,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 211 treesize of output 62 [2021-02-19 19:55:54,225 INFO L550 ElimStorePlain]: Start of recursive call 324: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:54,286 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:54,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 58 [2021-02-19 19:55:54,288 INFO L550 ElimStorePlain]: Start of recursive call 325: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:54,347 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:54,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 214 treesize of output 61 [2021-02-19 19:55:54,349 INFO L550 ElimStorePlain]: Start of recursive call 326: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:54,409 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:54,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 219 treesize of output 62 [2021-02-19 19:55:54,411 INFO L550 ElimStorePlain]: Start of recursive call 327: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:54,472 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:54,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 213 treesize of output 62 [2021-02-19 19:55:54,475 INFO L550 ElimStorePlain]: Start of recursive call 328: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:54,535 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:54,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:54,537 INFO L550 ElimStorePlain]: Start of recursive call 329: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:54,597 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:54,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:55:54,599 INFO L550 ElimStorePlain]: Start of recursive call 330: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:54,659 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:54,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 212 treesize of output 59 [2021-02-19 19:55:54,661 INFO L550 ElimStorePlain]: Start of recursive call 331: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:54,738 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:55:54,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 231 treesize of output 70 [2021-02-19 19:55:54,741 INFO L550 ElimStorePlain]: Start of recursive call 332: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:54,802 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:54,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 213 treesize of output 60 [2021-02-19 19:55:54,804 INFO L550 ElimStorePlain]: Start of recursive call 333: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:54,864 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:54,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 220 treesize of output 63 [2021-02-19 19:55:54,866 INFO L550 ElimStorePlain]: Start of recursive call 334: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:54,926 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:54,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 219 treesize of output 62 [2021-02-19 19:55:54,928 INFO L550 ElimStorePlain]: Start of recursive call 335: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:54,990 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:54,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:54,992 INFO L550 ElimStorePlain]: Start of recursive call 336: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:55,059 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:55,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 188 treesize of output 55 [2021-02-19 19:55:55,061 INFO L550 ElimStorePlain]: Start of recursive call 337: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:55,122 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:55,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 211 treesize of output 58 [2021-02-19 19:55:55,124 INFO L550 ElimStorePlain]: Start of recursive call 338: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:55,186 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:55,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 217 treesize of output 60 [2021-02-19 19:55:55,188 INFO L550 ElimStorePlain]: Start of recursive call 339: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:55,250 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:55,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 201 treesize of output 58 [2021-02-19 19:55:55,252 INFO L550 ElimStorePlain]: Start of recursive call 340: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:55,314 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:55,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 226 treesize of output 65 [2021-02-19 19:55:55,316 INFO L550 ElimStorePlain]: Start of recursive call 341: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:55,378 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:55,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 59 [2021-02-19 19:55:55,380 INFO L550 ElimStorePlain]: Start of recursive call 342: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:55,444 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:55,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:55,446 INFO L550 ElimStorePlain]: Start of recursive call 343: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:55,510 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:55,510 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:55,512 INFO L550 ElimStorePlain]: Start of recursive call 344: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:55,574 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:55,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 184 treesize of output 55 [2021-02-19 19:55:55,576 INFO L550 ElimStorePlain]: Start of recursive call 345: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:55,644 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:55,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 208 treesize of output 59 [2021-02-19 19:55:55,646 INFO L550 ElimStorePlain]: Start of recursive call 346: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:55,710 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:55,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 190 treesize of output 57 [2021-02-19 19:55:55,712 INFO L550 ElimStorePlain]: Start of recursive call 347: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:55,777 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:55,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 188 treesize of output 55 [2021-02-19 19:55:55,778 INFO L550 ElimStorePlain]: Start of recursive call 348: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:55,844 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:55,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:55,845 INFO L550 ElimStorePlain]: Start of recursive call 349: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:55,909 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:55,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 201 treesize of output 60 [2021-02-19 19:55:55,911 INFO L550 ElimStorePlain]: Start of recursive call 350: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:55,975 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:55,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 59 [2021-02-19 19:55:55,977 INFO L550 ElimStorePlain]: Start of recursive call 351: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:56,057 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:55:56,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 226 treesize of output 69 [2021-02-19 19:55:56,060 INFO L550 ElimStorePlain]: Start of recursive call 352: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:56,124 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:56,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 59 [2021-02-19 19:55:56,126 INFO L550 ElimStorePlain]: Start of recursive call 353: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:56,189 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:56,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 172 treesize of output 51 [2021-02-19 19:55:56,190 INFO L550 ElimStorePlain]: Start of recursive call 354: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:56,254 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:56,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 182 treesize of output 53 [2021-02-19 19:55:56,256 INFO L550 ElimStorePlain]: Start of recursive call 355: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:56,322 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:56,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 211 treesize of output 62 [2021-02-19 19:55:56,325 INFO L550 ElimStorePlain]: Start of recursive call 356: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:56,403 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:55:56,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 221 treesize of output 68 [2021-02-19 19:55:56,406 INFO L550 ElimStorePlain]: Start of recursive call 357: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:56,471 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:56,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 182 treesize of output 53 [2021-02-19 19:55:56,472 INFO L550 ElimStorePlain]: Start of recursive call 358: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:56,536 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:56,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:56,538 INFO L550 ElimStorePlain]: Start of recursive call 359: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:56,602 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:56,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 190 treesize of output 57 [2021-02-19 19:55:56,604 INFO L550 ElimStorePlain]: Start of recursive call 360: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:56,669 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:56,669 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 229 treesize of output 64 [2021-02-19 19:55:56,671 INFO L550 ElimStorePlain]: Start of recursive call 361: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:56,736 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:56,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 58 [2021-02-19 19:55:56,739 INFO L550 ElimStorePlain]: Start of recursive call 362: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:56,804 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:56,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 187 treesize of output 54 [2021-02-19 19:55:56,806 INFO L550 ElimStorePlain]: Start of recursive call 363: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:56,877 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:56,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 209 treesize of output 60 [2021-02-19 19:55:56,879 INFO L550 ElimStorePlain]: Start of recursive call 364: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:56,943 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:56,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 216 treesize of output 63 [2021-02-19 19:55:56,945 INFO L550 ElimStorePlain]: Start of recursive call 365: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:57,010 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:57,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 201 treesize of output 56 [2021-02-19 19:55:57,012 INFO L550 ElimStorePlain]: Start of recursive call 366: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:57,076 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:57,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 224 treesize of output 63 [2021-02-19 19:55:57,078 INFO L550 ElimStorePlain]: Start of recursive call 367: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:57,143 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:57,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 183 treesize of output 54 [2021-02-19 19:55:57,144 INFO L550 ElimStorePlain]: Start of recursive call 368: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:57,213 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:57,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 210 treesize of output 61 [2021-02-19 19:55:57,215 INFO L550 ElimStorePlain]: Start of recursive call 369: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:57,287 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:57,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 223 treesize of output 64 [2021-02-19 19:55:57,289 INFO L550 ElimStorePlain]: Start of recursive call 370: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:57,355 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:57,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 209 treesize of output 60 [2021-02-19 19:55:57,357 INFO L550 ElimStorePlain]: Start of recursive call 371: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:57,422 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:57,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 191 treesize of output 56 [2021-02-19 19:55:57,425 INFO L550 ElimStorePlain]: Start of recursive call 372: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:57,491 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:57,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 188 treesize of output 55 [2021-02-19 19:55:57,492 INFO L550 ElimStorePlain]: Start of recursive call 373: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:57,557 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:57,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 187 treesize of output 54 [2021-02-19 19:55:57,559 INFO L550 ElimStorePlain]: Start of recursive call 374: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:57,638 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:57,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:57,640 INFO L550 ElimStorePlain]: Start of recursive call 375: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:57,707 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:57,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 215 treesize of output 62 [2021-02-19 19:55:57,709 INFO L550 ElimStorePlain]: Start of recursive call 376: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:57,776 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:57,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:57,779 INFO L550 ElimStorePlain]: Start of recursive call 377: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:57,848 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:57,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 227 treesize of output 62 [2021-02-19 19:55:57,850 INFO L550 ElimStorePlain]: Start of recursive call 378: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:57,918 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:57,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 182 treesize of output 53 [2021-02-19 19:55:57,921 INFO L550 ElimStorePlain]: Start of recursive call 379: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:57,990 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:57,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 183 treesize of output 54 [2021-02-19 19:55:57,992 INFO L550 ElimStorePlain]: Start of recursive call 380: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:58,058 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:58,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:58,060 INFO L550 ElimStorePlain]: Start of recursive call 381: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:58,128 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:58,128 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 183 treesize of output 54 [2021-02-19 19:55:58,130 INFO L550 ElimStorePlain]: Start of recursive call 382: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:58,199 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:58,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 208 treesize of output 61 [2021-02-19 19:55:58,201 INFO L550 ElimStorePlain]: Start of recursive call 383: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:58,268 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:58,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 222 treesize of output 61 [2021-02-19 19:55:58,271 INFO L550 ElimStorePlain]: Start of recursive call 384: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:58,337 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:58,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 214 treesize of output 61 [2021-02-19 19:55:58,340 INFO L550 ElimStorePlain]: Start of recursive call 385: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:58,408 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:58,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 215 treesize of output 62 [2021-02-19 19:55:58,410 INFO L550 ElimStorePlain]: Start of recursive call 386: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:58,479 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:58,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 167 treesize of output 50 [2021-02-19 19:55:58,481 INFO L550 ElimStorePlain]: Start of recursive call 387: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:58,547 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:58,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 191 treesize of output 54 [2021-02-19 19:55:58,549 INFO L550 ElimStorePlain]: Start of recursive call 388: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:58,616 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:58,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 174 treesize of output 53 [2021-02-19 19:55:58,618 INFO L550 ElimStorePlain]: Start of recursive call 389: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:58,684 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:58,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 228 treesize of output 65 [2021-02-19 19:55:58,686 INFO L550 ElimStorePlain]: Start of recursive call 390: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:58,755 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:58,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 59 [2021-02-19 19:55:58,757 INFO L550 ElimStorePlain]: Start of recursive call 391: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:58,824 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:58,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:58,827 INFO L550 ElimStorePlain]: Start of recursive call 392: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:58,893 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:58,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 58 [2021-02-19 19:55:58,895 INFO L550 ElimStorePlain]: Start of recursive call 393: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:58,961 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:58,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:55:58,963 INFO L550 ElimStorePlain]: Start of recursive call 394: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:59,031 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:59,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:59,033 INFO L550 ElimStorePlain]: Start of recursive call 395: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:59,099 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:59,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 201 treesize of output 56 [2021-02-19 19:55:59,101 INFO L550 ElimStorePlain]: Start of recursive call 396: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:59,169 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:59,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:59,171 INFO L550 ElimStorePlain]: Start of recursive call 397: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:59,237 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:59,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 201 treesize of output 56 [2021-02-19 19:55:59,240 INFO L550 ElimStorePlain]: Start of recursive call 398: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:59,306 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:59,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 208 treesize of output 59 [2021-02-19 19:55:59,308 INFO L550 ElimStorePlain]: Start of recursive call 399: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:59,376 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:59,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:59,378 INFO L550 ElimStorePlain]: Start of recursive call 400: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:59,461 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:55:59,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 221 treesize of output 68 [2021-02-19 19:55:59,463 INFO L550 ElimStorePlain]: Start of recursive call 401: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:59,545 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:55:59,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 201 treesize of output 64 [2021-02-19 19:55:59,588 INFO L550 ElimStorePlain]: Start of recursive call 402: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:59,629 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:59,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 220 treesize of output 63 [2021-02-19 19:55:59,631 INFO L550 ElimStorePlain]: Start of recursive call 403: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:59,673 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:59,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 213 treesize of output 60 [2021-02-19 19:55:59,675 INFO L550 ElimStorePlain]: Start of recursive call 404: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:59,716 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:59,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 220 treesize of output 63 [2021-02-19 19:55:59,718 INFO L550 ElimStorePlain]: Start of recursive call 405: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:59,756 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:59,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 229 treesize of output 64 [2021-02-19 19:55:59,758 INFO L550 ElimStorePlain]: Start of recursive call 406: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:59,797 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:59,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 237 treesize of output 64 [2021-02-19 19:55:59,799 INFO L550 ElimStorePlain]: Start of recursive call 407: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:59,846 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:59,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 232 treesize of output 63 [2021-02-19 19:55:59,848 INFO L550 ElimStorePlain]: Start of recursive call 408: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:59,887 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:59,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 196 treesize of output 57 [2021-02-19 19:55:59,889 INFO L550 ElimStorePlain]: Start of recursive call 409: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:59,930 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:55:59,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:55:59,932 INFO L550 ElimStorePlain]: Start of recursive call 410: End of recursive call: and 1 xjuncts. [2021-02-19 19:55:59,986 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:55:59,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 216 treesize of output 67 [2021-02-19 19:55:59,988 INFO L550 ElimStorePlain]: Start of recursive call 411: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,025 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:56:00,027 INFO L550 ElimStorePlain]: Start of recursive call 412: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,066 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 172 treesize of output 51 [2021-02-19 19:56:00,068 INFO L550 ElimStorePlain]: Start of recursive call 413: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,111 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 172 treesize of output 51 [2021-02-19 19:56:00,113 INFO L550 ElimStorePlain]: Start of recursive call 414: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,162 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 190 treesize of output 57 [2021-02-19 19:56:00,164 INFO L550 ElimStorePlain]: Start of recursive call 415: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,209 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 190 treesize of output 57 [2021-02-19 19:56:00,211 INFO L550 ElimStorePlain]: Start of recursive call 416: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,250 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 58 [2021-02-19 19:56:00,252 INFO L550 ElimStorePlain]: Start of recursive call 417: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,291 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 201 treesize of output 58 [2021-02-19 19:56:00,293 INFO L550 ElimStorePlain]: Start of recursive call 418: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,334 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 227 treesize of output 62 [2021-02-19 19:56:00,336 INFO L550 ElimStorePlain]: Start of recursive call 419: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,377 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 213 treesize of output 62 [2021-02-19 19:56:00,379 INFO L550 ElimStorePlain]: Start of recursive call 420: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,425 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 227 treesize of output 62 [2021-02-19 19:56:00,427 INFO L550 ElimStorePlain]: Start of recursive call 421: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,471 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 216 treesize of output 61 [2021-02-19 19:56:00,473 INFO L550 ElimStorePlain]: Start of recursive call 422: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,514 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 201 treesize of output 58 [2021-02-19 19:56:00,516 INFO L550 ElimStorePlain]: Start of recursive call 423: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,571 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:56:00,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 226 treesize of output 69 [2021-02-19 19:56:00,574 INFO L550 ElimStorePlain]: Start of recursive call 424: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,615 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 59 [2021-02-19 19:56:00,617 INFO L550 ElimStorePlain]: Start of recursive call 425: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,659 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:56:00,661 INFO L550 ElimStorePlain]: Start of recursive call 426: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,705 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:56:00,707 INFO L550 ElimStorePlain]: Start of recursive call 427: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,748 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 185 treesize of output 56 [2021-02-19 19:56:00,750 INFO L550 ElimStorePlain]: Start of recursive call 428: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,792 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 188 treesize of output 55 [2021-02-19 19:56:00,794 INFO L550 ElimStorePlain]: Start of recursive call 429: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,834 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:56:00,836 INFO L550 ElimStorePlain]: Start of recursive call 430: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,878 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 188 treesize of output 55 [2021-02-19 19:56:00,879 INFO L550 ElimStorePlain]: Start of recursive call 431: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,922 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 174 treesize of output 53 [2021-02-19 19:56:00,924 INFO L550 ElimStorePlain]: Start of recursive call 432: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:00,965 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:00,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 210 treesize of output 61 [2021-02-19 19:56:00,968 INFO L550 ElimStorePlain]: Start of recursive call 433: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,010 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:01,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:56:01,012 INFO L550 ElimStorePlain]: Start of recursive call 434: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,055 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:01,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 59 [2021-02-19 19:56:01,057 INFO L550 ElimStorePlain]: Start of recursive call 435: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,101 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:01,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 218 treesize of output 63 [2021-02-19 19:56:01,103 INFO L550 ElimStorePlain]: Start of recursive call 436: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,162 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:56:01,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 211 treesize of output 66 [2021-02-19 19:56:01,165 INFO L550 ElimStorePlain]: Start of recursive call 437: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,222 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:56:01,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 221 treesize of output 68 [2021-02-19 19:56:01,225 INFO L550 ElimStorePlain]: Start of recursive call 438: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,266 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:01,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 218 treesize of output 63 [2021-02-19 19:56:01,268 INFO L550 ElimStorePlain]: Start of recursive call 439: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,308 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:01,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 208 treesize of output 59 [2021-02-19 19:56:01,310 INFO L550 ElimStorePlain]: Start of recursive call 440: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,352 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:01,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 191 treesize of output 56 [2021-02-19 19:56:01,354 INFO L550 ElimStorePlain]: Start of recursive call 441: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,395 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:01,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:56:01,397 INFO L550 ElimStorePlain]: Start of recursive call 442: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,446 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:01,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 188 treesize of output 55 [2021-02-19 19:56:01,448 INFO L550 ElimStorePlain]: Start of recursive call 443: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,492 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:01,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 208 treesize of output 61 [2021-02-19 19:56:01,494 INFO L550 ElimStorePlain]: Start of recursive call 444: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,537 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:01,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 193 treesize of output 56 [2021-02-19 19:56:01,540 INFO L550 ElimStorePlain]: Start of recursive call 445: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,583 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:01,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:56:01,585 INFO L550 ElimStorePlain]: Start of recursive call 446: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,627 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:01,627 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 220 treesize of output 63 [2021-02-19 19:56:01,629 INFO L550 ElimStorePlain]: Start of recursive call 447: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,671 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:01,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 208 treesize of output 59 [2021-02-19 19:56:01,673 INFO L550 ElimStorePlain]: Start of recursive call 448: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,730 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:56:01,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 211 treesize of output 66 [2021-02-19 19:56:01,732 INFO L550 ElimStorePlain]: Start of recursive call 449: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,774 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:01,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 204 treesize of output 59 [2021-02-19 19:56:01,776 INFO L550 ElimStorePlain]: Start of recursive call 450: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,819 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:01,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 167 treesize of output 50 [2021-02-19 19:56:01,820 INFO L550 ElimStorePlain]: Start of recursive call 451: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,862 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:01,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 206 treesize of output 59 [2021-02-19 19:56:01,864 INFO L550 ElimStorePlain]: Start of recursive call 452: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,906 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:01,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:56:01,908 INFO L550 ElimStorePlain]: Start of recursive call 453: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,951 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:01,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 211 treesize of output 58 [2021-02-19 19:56:01,953 INFO L550 ElimStorePlain]: Start of recursive call 454: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:01,994 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:01,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 216 treesize of output 63 [2021-02-19 19:56:01,996 INFO L550 ElimStorePlain]: Start of recursive call 455: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,039 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 58 [2021-02-19 19:56:02,041 INFO L550 ElimStorePlain]: Start of recursive call 456: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,084 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 206 treesize of output 57 [2021-02-19 19:56:02,085 INFO L550 ElimStorePlain]: Start of recursive call 457: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,127 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 209 treesize of output 60 [2021-02-19 19:56:02,129 INFO L550 ElimStorePlain]: Start of recursive call 458: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,171 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:56:02,173 INFO L550 ElimStorePlain]: Start of recursive call 459: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,214 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 206 treesize of output 59 [2021-02-19 19:56:02,216 INFO L550 ElimStorePlain]: Start of recursive call 460: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,256 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 210 treesize of output 61 [2021-02-19 19:56:02,258 INFO L550 ElimStorePlain]: Start of recursive call 461: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,298 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 205 treesize of output 60 [2021-02-19 19:56:02,300 INFO L550 ElimStorePlain]: Start of recursive call 462: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,340 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 210 treesize of output 61 [2021-02-19 19:56:02,342 INFO L550 ElimStorePlain]: Start of recursive call 463: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,381 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 187 treesize of output 54 [2021-02-19 19:56:02,383 INFO L550 ElimStorePlain]: Start of recursive call 464: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,426 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 218 treesize of output 63 [2021-02-19 19:56:02,429 INFO L550 ElimStorePlain]: Start of recursive call 465: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,469 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 206 treesize of output 61 [2021-02-19 19:56:02,471 INFO L550 ElimStorePlain]: Start of recursive call 466: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,512 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 185 treesize of output 56 [2021-02-19 19:56:02,514 INFO L550 ElimStorePlain]: Start of recursive call 467: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,553 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 59 [2021-02-19 19:56:02,555 INFO L550 ElimStorePlain]: Start of recursive call 468: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,594 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:56:02,596 INFO L550 ElimStorePlain]: Start of recursive call 469: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,635 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 214 treesize of output 61 [2021-02-19 19:56:02,637 INFO L550 ElimStorePlain]: Start of recursive call 470: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,676 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 59 [2021-02-19 19:56:02,679 INFO L550 ElimStorePlain]: Start of recursive call 471: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,718 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 190 treesize of output 57 [2021-02-19 19:56:02,720 INFO L550 ElimStorePlain]: Start of recursive call 472: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,760 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 201 treesize of output 56 [2021-02-19 19:56:02,762 INFO L550 ElimStorePlain]: Start of recursive call 473: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,801 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 59 [2021-02-19 19:56:02,803 INFO L550 ElimStorePlain]: Start of recursive call 474: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,842 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 221 treesize of output 64 [2021-02-19 19:56:02,844 INFO L550 ElimStorePlain]: Start of recursive call 475: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,883 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 180 treesize of output 55 [2021-02-19 19:56:02,884 INFO L550 ElimStorePlain]: Start of recursive call 476: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,923 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:56:02,925 INFO L550 ElimStorePlain]: Start of recursive call 477: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:02,965 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:02,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 205 treesize of output 60 [2021-02-19 19:56:02,967 INFO L550 ElimStorePlain]: Start of recursive call 478: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,006 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 227 treesize of output 62 [2021-02-19 19:56:03,008 INFO L550 ElimStorePlain]: Start of recursive call 479: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,046 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 213 treesize of output 60 [2021-02-19 19:56:03,048 INFO L550 ElimStorePlain]: Start of recursive call 480: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,087 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 203 treesize of output 58 [2021-02-19 19:56:03,089 INFO L550 ElimStorePlain]: Start of recursive call 481: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,130 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 185 treesize of output 56 [2021-02-19 19:56:03,132 INFO L550 ElimStorePlain]: Start of recursive call 482: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,170 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 205 treesize of output 60 [2021-02-19 19:56:03,172 INFO L550 ElimStorePlain]: Start of recursive call 483: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,210 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 198 treesize of output 57 [2021-02-19 19:56:03,213 INFO L550 ElimStorePlain]: Start of recursive call 484: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,251 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 188 treesize of output 55 [2021-02-19 19:56:03,253 INFO L550 ElimStorePlain]: Start of recursive call 485: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,291 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 208 treesize of output 59 [2021-02-19 19:56:03,293 INFO L550 ElimStorePlain]: Start of recursive call 486: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,333 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 222 treesize of output 61 [2021-02-19 19:56:03,335 INFO L550 ElimStorePlain]: Start of recursive call 487: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,373 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 190 treesize of output 57 [2021-02-19 19:56:03,375 INFO L550 ElimStorePlain]: Start of recursive call 488: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,412 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,413 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 196 treesize of output 55 [2021-02-19 19:56:03,414 INFO L550 ElimStorePlain]: Start of recursive call 489: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,451 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 182 treesize of output 53 [2021-02-19 19:56:03,453 INFO L550 ElimStorePlain]: Start of recursive call 490: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,491 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 200 treesize of output 59 [2021-02-19 19:56:03,493 INFO L550 ElimStorePlain]: Start of recursive call 491: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,543 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:56:03,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 216 treesize of output 67 [2021-02-19 19:56:03,545 INFO L550 ElimStorePlain]: Start of recursive call 492: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,582 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 225 treesize of output 64 [2021-02-19 19:56:03,584 INFO L550 ElimStorePlain]: Start of recursive call 493: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,620 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 209 treesize of output 60 [2021-02-19 19:56:03,622 INFO L550 ElimStorePlain]: Start of recursive call 494: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,660 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,660 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 215 treesize of output 62 [2021-02-19 19:56:03,662 INFO L550 ElimStorePlain]: Start of recursive call 495: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,697 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 211 treesize of output 58 [2021-02-19 19:56:03,699 INFO L550 ElimStorePlain]: Start of recursive call 496: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,745 INFO L354 Elim1Store]: treesize reduction 168, result has 0.6 percent of original size [2021-02-19 19:56:03,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 221 treesize of output 68 [2021-02-19 19:56:03,748 INFO L550 ElimStorePlain]: Start of recursive call 497: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,785 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 195 treesize of output 58 [2021-02-19 19:56:03,788 INFO L550 ElimStorePlain]: Start of recursive call 498: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,823 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 190 treesize of output 57 [2021-02-19 19:56:03,825 INFO L550 ElimStorePlain]: Start of recursive call 499: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,859 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 224 treesize of output 63 [2021-02-19 19:56:03,861 INFO L550 ElimStorePlain]: Start of recursive call 500: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,894 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 222 treesize of output 61 [2021-02-19 19:56:03,896 INFO L550 ElimStorePlain]: Start of recursive call 501: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,930 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 201 treesize of output 56 [2021-02-19 19:56:03,932 INFO L550 ElimStorePlain]: Start of recursive call 502: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,964 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 223 treesize of output 64 [2021-02-19 19:56:03,966 INFO L550 ElimStorePlain]: Start of recursive call 503: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:03,998 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:03,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 177 treesize of output 52 [2021-02-19 19:56:04,000 INFO L550 ElimStorePlain]: Start of recursive call 504: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:04,004 INFO L354 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2021-02-19 19:56:04,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 219 treesize of output 62 [2021-02-19 19:56:04,006 INFO L550 ElimStorePlain]: Start of recursive call 505: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:04,008 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:56:04,008 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:56:04,008 INFO L247 ElimStorePlain]: Needed 505 recursive calls to eliminate 2 variables, input treesize:102913, output treesize:3 [2021-02-19 19:56:04,027 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:56:04,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:56:04,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16] total 23 [2021-02-19 19:56:04,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347802469] [2021-02-19 19:56:04,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 19:56:04,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:56:04,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 19:56:04,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:56:04,028 INFO L87 Difference]: Start difference. First operand 49976 states and 127041 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:56:04,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:56:04,486 INFO L93 Difference]: Finished difference Result 52344 states and 132850 transitions. [2021-02-19 19:56:04,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-02-19 19:56:04,487 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-02-19 19:56:04,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:56:04,570 INFO L225 Difference]: With dead ends: 52344 [2021-02-19 19:56:04,570 INFO L226 Difference]: Without dead ends: 52328 [2021-02-19 19:56:04,570 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:56:04,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52328 states. [2021-02-19 19:56:05,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52328 to 51480. [2021-02-19 19:56:05,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51480 states, 51479 states have (on average 2.547854464927446) internal successors, (131161), 51479 states have internal predecessors, (131161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:56:05,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51480 states to 51480 states and 131161 transitions. [2021-02-19 19:56:05,433 INFO L78 Accepts]: Start accepts. Automaton has 51480 states and 131161 transitions. Word has length 42 [2021-02-19 19:56:05,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:56:05,433 INFO L480 AbstractCegarLoop]: Abstraction has 51480 states and 131161 transitions. [2021-02-19 19:56:05,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:56:05,433 INFO L276 IsEmpty]: Start isEmpty. Operand 51480 states and 131161 transitions. [2021-02-19 19:56:05,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-19 19:56:05,465 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:56:05,465 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:56:05,665 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4305 [2021-02-19 19:56:05,665 INFO L428 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:56:05,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:56:05,668 INFO L82 PathProgramCache]: Analyzing trace with hash 658507373, now seen corresponding path program 138 times [2021-02-19 19:56:05,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:56:05,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849465361] [2021-02-19 19:56:05,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:56:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:56:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:56:05,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849465361] [2021-02-19 19:56:05,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109262135] [2021-02-19 19:56:05,755 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 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 [2021-02-19 19:56:05,781 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-02-19 19:56:05,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:56:05,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 55 conjunts are in the unsatisfiable core [2021-02-19 19:56:05,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:56:06,272 INFO L446 ElimStorePlain]: Different costs {28=[f], 66=[f_inv]} [2021-02-19 19:56:06,432 WARN L202 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 66 [2021-02-19 19:56:06,433 INFO L354 Elim1Store]: treesize reduction 125, result has 44.4 percent of original size [2021-02-19 19:56:06,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 15 new quantified variables, introduced 28 case distinctions, treesize of input 264 treesize of output 208 [2021-02-19 19:56:07,113 WARN L202 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-02-19 19:56:10,641 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:56:10,792 WARN L202 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2021-02-19 19:56:10,793 INFO L628 ElimStorePlain]: treesize reduction 17, result has 96.5 percent of original size [2021-02-19 19:56:10,900 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-19 19:56:10,901 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:56:10,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 21 case distinctions, treesize of input 465 treesize of output 289 [2021-02-19 19:56:11,382 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:11,384 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:56:11,385 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:56:11,385 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:264, output treesize:3 [2021-02-19 19:56:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:56:11,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:56:11,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16] total 23 [2021-02-19 19:56:11,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321553979] [2021-02-19 19:56:11,403 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 19:56:11,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:56:11,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 19:56:11,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:56:11,403 INFO L87 Difference]: Start difference. First operand 51480 states and 131161 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:56:11,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:56:11,967 INFO L93 Difference]: Finished difference Result 53250 states and 135691 transitions. [2021-02-19 19:56:11,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-19 19:56:11,968 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-02-19 19:56:11,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:56:12,051 INFO L225 Difference]: With dead ends: 53250 [2021-02-19 19:56:12,052 INFO L226 Difference]: Without dead ends: 53232 [2021-02-19 19:56:12,052 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:56:12,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53232 states. [2021-02-19 19:56:12,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53232 to 52433. [2021-02-19 19:56:12,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52433 states, 52432 states have (on average 2.5524679584986267) internal successors, (133831), 52432 states have internal predecessors, (133831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:56:12,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52433 states to 52433 states and 133831 transitions. [2021-02-19 19:56:12,881 INFO L78 Accepts]: Start accepts. Automaton has 52433 states and 133831 transitions. Word has length 42 [2021-02-19 19:56:12,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:56:12,881 INFO L480 AbstractCegarLoop]: Abstraction has 52433 states and 133831 transitions. [2021-02-19 19:56:12,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:56:12,881 INFO L276 IsEmpty]: Start isEmpty. Operand 52433 states and 133831 transitions. [2021-02-19 19:56:12,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-19 19:56:12,910 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:56:12,910 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:56:13,111 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4742,139 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:56:13,111 INFO L428 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:56:13,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:56:13,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1714803347, now seen corresponding path program 139 times [2021-02-19 19:56:13,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:56:13,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210094287] [2021-02-19 19:56:13,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:56:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:56:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:56:13,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210094287] [2021-02-19 19:56:13,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103237642] [2021-02-19 19:56:13,179 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 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 [2021-02-19 19:56:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:56:13,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 45 conjunts are in the unsatisfiable core [2021-02-19 19:56:13,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:56:13,751 WARN L202 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 73 [2021-02-19 19:56:13,751 INFO L354 Elim1Store]: treesize reduction 355, result has 34.4 percent of original size [2021-02-19 19:56:13,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 16 new quantified variables, introduced 45 case distinctions, treesize of input 207 treesize of output 246 [2021-02-19 19:56:13,755 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:13,829 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:56:13,831 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:56:13,831 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:207, output treesize:318 [2021-02-19 19:56:13,993 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2021-02-19 19:56:15,004 WARN L202 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 50 [2021-02-19 19:56:15,125 INFO L446 ElimStorePlain]: Different costs {6=[v_prenex_138], 10=[f], 15=[v_prenex_139], 21=[v_prenex_137]} [2021-02-19 19:56:15,160 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:56:15,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 23 treesize of output 64 [2021-02-19 19:56:15,179 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:15,189 INFO L628 ElimStorePlain]: treesize reduction 238, result has 1.2 percent of original size [2021-02-19 19:56:15,189 INFO L518 ElimStorePlain]: Eliminatee f vanished before elimination [2021-02-19 19:56:15,189 INFO L518 ElimStorePlain]: Eliminatee v_prenex_139 vanished before elimination [2021-02-19 19:56:15,189 INFO L518 ElimStorePlain]: Eliminatee v_prenex_137 vanished before elimination [2021-02-19 19:56:15,190 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:56:15,190 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:261, output treesize:3 [2021-02-19 19:56:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:56:15,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:56:15,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16] total 23 [2021-02-19 19:56:15,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962388803] [2021-02-19 19:56:15,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 19:56:15,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:56:15,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 19:56:15,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:56:15,210 INFO L87 Difference]: Start difference. First operand 52433 states and 133831 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:56:16,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:56:16,202 INFO L93 Difference]: Finished difference Result 54975 states and 140281 transitions. [2021-02-19 19:56:16,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-19 19:56:16,203 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-02-19 19:56:16,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:56:16,292 INFO L225 Difference]: With dead ends: 54975 [2021-02-19 19:56:16,293 INFO L226 Difference]: Without dead ends: 54946 [2021-02-19 19:56:16,293 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:56:16,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54946 states. [2021-02-19 19:56:17,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54946 to 53500. [2021-02-19 19:56:17,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53500 states, 53499 states have (on average 2.556926297687807) internal successors, (136793), 53499 states have internal predecessors, (136793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:56:17,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53500 states to 53500 states and 136793 transitions. [2021-02-19 19:56:17,278 INFO L78 Accepts]: Start accepts. Automaton has 53500 states and 136793 transitions. Word has length 42 [2021-02-19 19:56:17,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:56:17,278 INFO L480 AbstractCegarLoop]: Abstraction has 53500 states and 136793 transitions. [2021-02-19 19:56:17,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:56:17,278 INFO L276 IsEmpty]: Start isEmpty. Operand 53500 states and 136793 transitions. [2021-02-19 19:56:17,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-19 19:56:17,310 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:56:17,311 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:56:17,511 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6037 [2021-02-19 19:56:17,511 INFO L428 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:56:17,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:56:17,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1838771091, now seen corresponding path program 140 times [2021-02-19 19:56:17,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:56:17,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042907784] [2021-02-19 19:56:17,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:56:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:56:17,577 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:56:17,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042907784] [2021-02-19 19:56:17,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316783438] [2021-02-19 19:56:17,578 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 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 [2021-02-19 19:56:17,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:56:17,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:56:17,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 45 conjunts are in the unsatisfiable core [2021-02-19 19:56:17,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:56:18,058 WARN L202 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 71 [2021-02-19 19:56:18,059 INFO L354 Elim1Store]: treesize reduction 238, result has 38.2 percent of original size [2021-02-19 19:56:18,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 15 new quantified variables, introduced 36 case distinctions, treesize of input 205 treesize of output 203 [2021-02-19 19:56:18,063 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:18,138 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:56:18,139 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:56:18,140 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:205, output treesize:260 [2021-02-19 19:56:18,288 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2021-02-19 19:56:18,578 WARN L202 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 148 [2021-02-19 19:56:19,385 WARN L202 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 51 [2021-02-19 19:56:19,614 INFO L446 ElimStorePlain]: Different costs {6=[v_prenex_141], 10=[f], 15=[v_prenex_142], 21=[v_prenex_140]} [2021-02-19 19:56:19,648 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:56:19,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 6 case distinctions, treesize of input 23 treesize of output 64 [2021-02-19 19:56:19,651 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:19,661 INFO L628 ElimStorePlain]: treesize reduction 214, result has 1.4 percent of original size [2021-02-19 19:56:19,661 INFO L518 ElimStorePlain]: Eliminatee f vanished before elimination [2021-02-19 19:56:19,661 INFO L518 ElimStorePlain]: Eliminatee v_prenex_142 vanished before elimination [2021-02-19 19:56:19,661 INFO L518 ElimStorePlain]: Eliminatee v_prenex_140 vanished before elimination [2021-02-19 19:56:19,662 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:56:19,662 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:237, output treesize:3 [2021-02-19 19:56:19,682 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:56:19,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:56:19,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16] total 23 [2021-02-19 19:56:19,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948412243] [2021-02-19 19:56:19,682 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 19:56:19,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:56:19,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 19:56:19,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:56:19,683 INFO L87 Difference]: Start difference. First operand 53500 states and 136793 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:56:20,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:56:20,522 INFO L93 Difference]: Finished difference Result 56192 states and 143625 transitions. [2021-02-19 19:56:20,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-02-19 19:56:20,523 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-02-19 19:56:20,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:56:20,615 INFO L225 Difference]: With dead ends: 56192 [2021-02-19 19:56:20,615 INFO L226 Difference]: Without dead ends: 56159 [2021-02-19 19:56:20,615 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:56:20,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56159 states. [2021-02-19 19:56:21,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56159 to 54544. [2021-02-19 19:56:21,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54544 states, 54543 states have (on average 2.5606402288102963) internal successors, (139665), 54543 states have internal predecessors, (139665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:56:21,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54544 states to 54544 states and 139665 transitions. [2021-02-19 19:56:21,694 INFO L78 Accepts]: Start accepts. Automaton has 54544 states and 139665 transitions. Word has length 42 [2021-02-19 19:56:21,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:56:21,694 INFO L480 AbstractCegarLoop]: Abstraction has 54544 states and 139665 transitions. [2021-02-19 19:56:21,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:56:21,694 INFO L276 IsEmpty]: Start isEmpty. Operand 54544 states and 139665 transitions. [2021-02-19 19:56:21,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-19 19:56:21,727 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:56:21,727 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:56:21,927 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6070,141 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:56:21,928 INFO L428 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:56:21,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:56:21,928 INFO L82 PathProgramCache]: Analyzing trace with hash -712688787, now seen corresponding path program 141 times [2021-02-19 19:56:21,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:56:21,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078805281] [2021-02-19 19:56:21,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:56:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:56:21,994 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:56:21,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078805281] [2021-02-19 19:56:21,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098449766] [2021-02-19 19:56:21,994 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 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 [2021-02-19 19:56:22,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-02-19 19:56:22,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:56:22,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 55 conjunts are in the unsatisfiable core [2021-02-19 19:56:22,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:56:22,538 INFO L446 ElimStorePlain]: Different costs {36=[f_inv], 55=[f]} [2021-02-19 19:56:22,719 WARN L202 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 68 [2021-02-19 19:56:22,719 INFO L354 Elim1Store]: treesize reduction 209, result has 38.0 percent of original size [2021-02-19 19:56:22,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 16 new quantified variables, introduced 36 case distinctions, treesize of input 264 treesize of output 216 [2021-02-19 19:56:25,128 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:56:25,208 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:56:25,321 WARN L202 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-02-19 19:56:25,322 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:56:25,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 12 new quantified variables, introduced 21 case distinctions, treesize of input 345 treesize of output 286 [2021-02-19 19:56:25,405 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:25,407 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:56:25,408 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:56:25,408 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:264, output treesize:3 [2021-02-19 19:56:25,425 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:56:25,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:56:25,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16] total 23 [2021-02-19 19:56:25,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628220184] [2021-02-19 19:56:25,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 19:56:25,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:56:25,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 19:56:25,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:56:25,426 INFO L87 Difference]: Start difference. First operand 54544 states and 139665 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:56:26,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:56:26,098 INFO L93 Difference]: Finished difference Result 57088 states and 146230 transitions. [2021-02-19 19:56:26,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-02-19 19:56:26,099 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-02-19 19:56:26,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:56:26,190 INFO L225 Difference]: With dead ends: 57088 [2021-02-19 19:56:26,190 INFO L226 Difference]: Without dead ends: 57058 [2021-02-19 19:56:26,190 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:56:26,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57058 states. [2021-02-19 19:56:27,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57058 to 55615. [2021-02-19 19:56:27,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55615 states, 55614 states have (on average 2.5645700722839573) internal successors, (142626), 55614 states have internal predecessors, (142626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:56:27,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55615 states to 55615 states and 142626 transitions. [2021-02-19 19:56:27,200 INFO L78 Accepts]: Start accepts. Automaton has 55615 states and 142626 transitions. Word has length 42 [2021-02-19 19:56:27,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:56:27,200 INFO L480 AbstractCegarLoop]: Abstraction has 55615 states and 142626 transitions. [2021-02-19 19:56:27,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:56:27,200 INFO L276 IsEmpty]: Start isEmpty. Operand 55615 states and 142626 transitions. [2021-02-19 19:56:27,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-19 19:56:27,232 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:56:27,232 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:56:27,433 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6088 [2021-02-19 19:56:27,433 INFO L428 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:56:27,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:56:27,434 INFO L82 PathProgramCache]: Analyzing trace with hash -879353235, now seen corresponding path program 142 times [2021-02-19 19:56:27,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:56:27,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256578488] [2021-02-19 19:56:27,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:56:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:56:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:56:27,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256578488] [2021-02-19 19:56:27,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132378955] [2021-02-19 19:56:27,506 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 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 [2021-02-19 19:56:27,528 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:56:27,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:56:27,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 45 conjunts are in the unsatisfiable core [2021-02-19 19:56:27,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:56:27,882 WARN L202 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 65 [2021-02-19 19:56:27,882 INFO L354 Elim1Store]: treesize reduction 72, result has 60.2 percent of original size [2021-02-19 19:56:27,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 21 case distinctions, treesize of input 177 treesize of output 163 [2021-02-19 19:56:27,886 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:27,964 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:56:27,965 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:56:27,966 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:177, output treesize:300 [2021-02-19 19:56:28,678 WARN L202 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2021-02-19 19:56:29,181 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2021-02-19 19:56:29,637 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 405 DAG size of output: 405 [2021-02-19 19:56:30,251 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 836 DAG size of output: 836 [2021-02-19 19:56:30,595 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 836 DAG size of output: 836 [2021-02-19 19:56:31,199 WARN L202 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 836 [2021-02-19 19:56:38,831 WARN L202 SmtUtils]: Spent 5.16 s on a formula simplification. DAG size of input: 836 DAG size of output: 55 [2021-02-19 19:56:39,616 INFO L446 ElimStorePlain]: Different costs {15=[v_prenex_149], 21=[f, v_prenex_147, v_prenex_148]} [2021-02-19 19:56:39,702 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:56:39,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 31 treesize of output 142 [2021-02-19 19:56:39,785 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:56:39,796 INFO L628 ElimStorePlain]: treesize reduction 489, result has 0.6 percent of original size [2021-02-19 19:56:39,797 INFO L518 ElimStorePlain]: Eliminatee f vanished before elimination [2021-02-19 19:56:39,797 INFO L518 ElimStorePlain]: Eliminatee v_prenex_147 vanished before elimination [2021-02-19 19:56:39,797 INFO L518 ElimStorePlain]: Eliminatee v_prenex_148 vanished before elimination [2021-02-19 19:56:39,797 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 4 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:56:39,797 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:520, output treesize:3 [2021-02-19 19:56:39,824 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 97 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:56:39,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:56:39,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16] total 23 [2021-02-19 19:56:39,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341677309] [2021-02-19 19:56:39,825 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 19:56:39,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:56:39,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 19:56:39,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:56:39,825 INFO L87 Difference]: Start difference. First operand 55615 states and 142626 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:56:41,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:56:41,015 INFO L93 Difference]: Finished difference Result 58151 states and 148884 transitions. [2021-02-19 19:56:41,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-02-19 19:56:41,017 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-02-19 19:56:41,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:56:41,108 INFO L225 Difference]: With dead ends: 58151 [2021-02-19 19:56:41,108 INFO L226 Difference]: Without dead ends: 58110 [2021-02-19 19:56:41,108 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:56:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58110 states. [2021-02-19 19:56:42,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58110 to 56750. [2021-02-19 19:56:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56750 states, 56749 states have (on average 2.5700364764136814) internal successors, (145847), 56749 states have internal predecessors, (145847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:56:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56750 states to 56750 states and 145847 transitions. [2021-02-19 19:56:42,205 INFO L78 Accepts]: Start accepts. Automaton has 56750 states and 145847 transitions. Word has length 42 [2021-02-19 19:56:42,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:56:42,205 INFO L480 AbstractCegarLoop]: Abstraction has 56750 states and 145847 transitions. [2021-02-19 19:56:42,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 23 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:56:42,206 INFO L276 IsEmpty]: Start isEmpty. Operand 56750 states and 145847 transitions. [2021-02-19 19:56:42,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-19 19:56:42,239 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:56:42,239 INFO L506 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:56:42,439 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6734 [2021-02-19 19:56:42,439 INFO L428 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:56:42,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:56:42,439 INFO L82 PathProgramCache]: Analyzing trace with hash -2130097811, now seen corresponding path program 143 times [2021-02-19 19:56:42,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:56:42,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678116253] [2021-02-19 19:56:42,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:56:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:56:42,509 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:56:42,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678116253] [2021-02-19 19:56:42,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427716493] [2021-02-19 19:56:42,509 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 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 [2021-02-19 19:56:42,534 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-02-19 19:56:42,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:56:42,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 53 conjunts are in the unsatisfiable core [2021-02-19 19:56:42,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:56:43,091 WARN L202 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 65 [2021-02-19 19:56:43,091 INFO L354 Elim1Store]: treesize reduction 128, result has 43.1 percent of original size [2021-02-19 19:56:43,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 15 new quantified variables, introduced 28 case distinctions, treesize of input 206 treesize of output 181 [2021-02-19 19:56:47,300 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:56:47,383 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:56:49,274 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-02-19 19:56:49,274 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:206, output treesize:433 [2021-02-19 19:56:53,135 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2021-02-19 19:56:54,120 WARN L202 SmtUtils]: Spent 904.00 ms on a formula simplification. DAG size of input: 621 DAG size of output: 621 [2021-02-19 19:56:55,725 WARN L202 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 1196 [2021-02-19 19:56:56,745 WARN L202 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 1196 [2021-02-19 19:56:58,254 WARN L202 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 1196 [2021-02-19 19:57:08,099 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2021-02-19 19:57:09,123 WARN L202 SmtUtils]: Spent 935.00 ms on a formula simplification. DAG size of input: 621 DAG size of output: 621 [2021-02-19 19:57:10,796 WARN L202 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 1196 [2021-02-19 19:57:11,891 WARN L202 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 1196 [2021-02-19 19:57:13,412 WARN L202 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 1196 [2021-02-19 19:57:31,317 WARN L202 SmtUtils]: Spent 11.24 s on a formula simplification. DAG size of input: 1196 DAG size of output: 58 [2021-02-19 19:57:31,875 INFO L354 Elim1Store]: treesize reduction 153, result has 9.5 percent of original size [2021-02-19 19:57:31,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 21 case distinctions, treesize of input 223 treesize of output 86 [2021-02-19 19:57:31,878 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-02-19 19:57:32,132 WARN L202 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 110 [2021-02-19 19:57:32,133 INFO L628 ElimStorePlain]: treesize reduction 894, result has 35.0 percent of original size [2021-02-19 19:57:32,193 INFO L354 Elim1Store]: treesize reduction 153, result has 9.5 percent of original size [2021-02-19 19:57:32,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 21 case distinctions, treesize of input 69 treesize of output 46 [2021-02-19 19:57:32,195 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-02-19 19:57:32,274 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 19:57:32,433 WARN L202 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 50 [2021-02-19 19:57:32,433 INFO L354 Elim1Store]: treesize reduction 84, result has 50.3 percent of original size [2021-02-19 19:57:32,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 13 new quantified variables, introduced 21 case distinctions, treesize of input 101 treesize of output 133 [2021-02-19 19:57:32,438 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-02-19 19:57:32,455 INFO L628 ElimStorePlain]: treesize reduction 318, result has 0.9 percent of original size [2021-02-19 19:57:32,455 INFO L518 ElimStorePlain]: Eliminatee v_prenex_164 vanished before elimination [2021-02-19 19:57:32,455 INFO L518 ElimStorePlain]: Eliminatee v_prenex_165 vanished before elimination [2021-02-19 19:57:32,455 INFO L518 ElimStorePlain]: Eliminatee v_prenex_166 vanished before elimination [2021-02-19 19:57:32,455 INFO L518 ElimStorePlain]: Eliminatee v_prenex_167 vanished before elimination [2021-02-19 19:57:32,456 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 7 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-02-19 19:57:32,456 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 14 variables, input treesize:1590, output treesize:3 [2021-02-19 19:57:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-19 19:57:32,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:57:32,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16] total 23 [2021-02-19 19:57:32,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880307955] [2021-02-19 19:57:32,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-19 19:57:32,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:57:32,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-19 19:57:32,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2021-02-19 19:57:32,483 INFO L87 Difference]: Start difference. First operand 56750 states and 145847 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:57:32,862 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2021-02-19 19:57:33,056 WARN L202 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 232 [2021-02-19 19:57:33,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:57:33,367 INFO L93 Difference]: Finished difference Result 58133 states and 149157 transitions. [2021-02-19 19:57:33,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-19 19:57:33,368 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-02-19 19:57:33,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:57:33,453 INFO L225 Difference]: With dead ends: 58133 [2021-02-19 19:57:33,454 INFO L226 Difference]: Without dead ends: 58126 [2021-02-19 19:57:33,454 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650 [2021-02-19 19:57:33,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58126 states. [2021-02-19 19:57:34,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58126 to 57370. [2021-02-19 19:57:34,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57370 states, 57369 states have (on average 2.572748348411163) internal successors, (147596), 57369 states have internal predecessors, (147596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:57:34,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57370 states to 57370 states and 147596 transitions. [2021-02-19 19:57:34,447 INFO L78 Accepts]: Start accepts. Automaton has 57370 states and 147596 transitions. Word has length 42 [2021-02-19 19:57:34,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:57:34,447 INFO L480 AbstractCegarLoop]: Abstraction has 57370 states and 147596 transitions. [2021-02-19 19:57:34,447 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 23 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:57:34,448 INFO L276 IsEmpty]: Start isEmpty. Operand 57370 states and 147596 transitions. [2021-02-19 19:57:34,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-19 19:57:34,482 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:57:34,482 INFO L506 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:57:34,683 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7075,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:57:34,683 INFO L428 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:57:34,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:57:34,684 INFO L82 PathProgramCache]: Analyzing trace with hash -37074257, now seen corresponding path program 144 times [2021-02-19 19:57:34,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:57:34,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454783300] [2021-02-19 19:57:34,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:57:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:57:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:57:34,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454783300] [2021-02-19 19:57:34,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856951866] [2021-02-19 19:57:34,946 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 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 [2021-02-19 19:57:34,971 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-02-19 19:57:34,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:57:34,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-02-19 19:57:34,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:57:35,528 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:57:35,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:57:35,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 37 [2021-02-19 19:57:35,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174757101] [2021-02-19 19:57:35,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-02-19 19:57:35,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:57:35,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-02-19 19:57:35,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=1143, Unknown=0, NotChecked=0, Total=1406 [2021-02-19 19:57:35,529 INFO L87 Difference]: Start difference. First operand 57370 states and 147596 transitions. Second operand has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:57:39,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:57:39,445 INFO L93 Difference]: Finished difference Result 61578 states and 156735 transitions. [2021-02-19 19:57:39,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-02-19 19:57:39,446 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-02-19 19:57:39,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:57:39,537 INFO L225 Difference]: With dead ends: 61578 [2021-02-19 19:57:39,537 INFO L226 Difference]: Without dead ends: 61578 [2021-02-19 19:57:39,539 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5718 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4657, Invalid=13165, Unknown=0, NotChecked=0, Total=17822 [2021-02-19 19:57:39,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61578 states. [2021-02-19 19:57:40,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61578 to 54115. [2021-02-19 19:57:40,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54115 states, 54114 states have (on average 2.5670066895812544) internal successors, (138911), 54114 states have internal predecessors, (138911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:57:40,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54115 states to 54115 states and 138911 transitions. [2021-02-19 19:57:40,395 INFO L78 Accepts]: Start accepts. Automaton has 54115 states and 138911 transitions. Word has length 44 [2021-02-19 19:57:40,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:57:40,395 INFO L480 AbstractCegarLoop]: Abstraction has 54115 states and 138911 transitions. [2021-02-19 19:57:40,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 2.1578947368421053) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:57:40,395 INFO L276 IsEmpty]: Start isEmpty. Operand 54115 states and 138911 transitions. [2021-02-19 19:57:40,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-19 19:57:40,428 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:57:40,428 INFO L506 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:57:40,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10528 [2021-02-19 19:57:40,630 INFO L428 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:57:40,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:57:40,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1433770261, now seen corresponding path program 145 times [2021-02-19 19:57:40,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:57:40,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009483919] [2021-02-19 19:57:40,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:57:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:57:40,865 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:57:40,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009483919] [2021-02-19 19:57:40,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378061903] [2021-02-19 19:57:40,866 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 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 [2021-02-19 19:57:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:57:40,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-02-19 19:57:40,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:57:41,491 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:57:41,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:57:41,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2021-02-19 19:57:41,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369355467] [2021-02-19 19:57:41,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-02-19 19:57:41,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:57:41,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-02-19 19:57:41,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=1107, Unknown=0, NotChecked=0, Total=1332 [2021-02-19 19:57:41,492 INFO L87 Difference]: Start difference. First operand 54115 states and 138911 transitions. Second operand has 37 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 36 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:57:48,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:57:48,203 INFO L93 Difference]: Finished difference Result 71421 states and 180739 transitions. [2021-02-19 19:57:48,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2021-02-19 19:57:48,205 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 36 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-02-19 19:57:48,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:57:48,310 INFO L225 Difference]: With dead ends: 71421 [2021-02-19 19:57:48,310 INFO L226 Difference]: Without dead ends: 71182 [2021-02-19 19:57:48,313 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12672 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=7124, Invalid=28032, Unknown=0, NotChecked=0, Total=35156 [2021-02-19 19:57:48,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71182 states. [2021-02-19 19:57:49,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71182 to 55547. [2021-02-19 19:57:49,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55547 states, 55546 states have (on average 2.5671335469700787) internal successors, (142594), 55546 states have internal predecessors, (142594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:57:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55547 states to 55547 states and 142594 transitions. [2021-02-19 19:57:49,486 INFO L78 Accepts]: Start accepts. Automaton has 55547 states and 142594 transitions. Word has length 44 [2021-02-19 19:57:49,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:57:49,486 INFO L480 AbstractCegarLoop]: Abstraction has 55547 states and 142594 transitions. [2021-02-19 19:57:49,486 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 2.1621621621621623) internal successors, (80), 36 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:57:49,486 INFO L276 IsEmpty]: Start isEmpty. Operand 55547 states and 142594 transitions. [2021-02-19 19:57:49,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-19 19:57:49,520 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:57:49,520 INFO L506 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:57:49,720 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10529,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:57:49,721 INFO L428 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:57:49,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:57:49,721 INFO L82 PathProgramCache]: Analyzing trace with hash 886756691, now seen corresponding path program 146 times [2021-02-19 19:57:49,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:57:49,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765260964] [2021-02-19 19:57:49,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:57:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:57:49,859 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:57:49,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765260964] [2021-02-19 19:57:49,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922210925] [2021-02-19 19:57:49,859 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 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 [2021-02-19 19:57:49,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:57:49,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:57:49,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-02-19 19:57:49,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:57:50,408 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:57:50,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:57:50,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19] total 29 [2021-02-19 19:57:50,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670596096] [2021-02-19 19:57:50,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-02-19 19:57:50,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:57:50,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-02-19 19:57:50,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=722, Unknown=0, NotChecked=0, Total=870 [2021-02-19 19:57:50,409 INFO L87 Difference]: Start difference. First operand 55547 states and 142594 transitions. Second operand has 30 states, 30 states have (on average 2.6) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:57:51,898 WARN L202 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2021-02-19 19:57:56,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:57:56,078 INFO L93 Difference]: Finished difference Result 94822 states and 241988 transitions. [2021-02-19 19:57:56,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2021-02-19 19:57:56,080 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-02-19 19:57:56,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:57:56,223 INFO L225 Difference]: With dead ends: 94822 [2021-02-19 19:57:56,223 INFO L226 Difference]: Without dead ends: 94798 [2021-02-19 19:57:56,225 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11051 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=7112, Invalid=20610, Unknown=0, NotChecked=0, Total=27722 [2021-02-19 19:57:56,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94798 states. [2021-02-19 19:57:57,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94798 to 72019. [2021-02-19 19:57:57,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72019 states, 72018 states have (on average 2.5672054208670056) internal successors, (184885), 72018 states have internal predecessors, (184885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:57:57,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72019 states to 72019 states and 184885 transitions. [2021-02-19 19:57:57,497 INFO L78 Accepts]: Start accepts. Automaton has 72019 states and 184885 transitions. Word has length 44 [2021-02-19 19:57:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:57:57,497 INFO L480 AbstractCegarLoop]: Abstraction has 72019 states and 184885 transitions. [2021-02-19 19:57:57,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:57:57,498 INFO L276 IsEmpty]: Start isEmpty. Operand 72019 states and 184885 transitions. [2021-02-19 19:57:57,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-19 19:57:57,534 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:57:57,534 INFO L506 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:57:57,735 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10530 [2021-02-19 19:57:57,735 INFO L428 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:57:57,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:57:57,735 INFO L82 PathProgramCache]: Analyzing trace with hash -497141391, now seen corresponding path program 147 times [2021-02-19 19:57:57,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:57:57,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496334798] [2021-02-19 19:57:57,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:57:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:57:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 57 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:57:57,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496334798] [2021-02-19 19:57:57,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705405019] [2021-02-19 19:57:57,880 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 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 [2021-02-19 19:57:57,907 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-02-19 19:57:57,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:57:57,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-02-19 19:57:57,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:57:58,468 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 57 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:57:58,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:57:58,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19] total 29 [2021-02-19 19:57:58,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732553278] [2021-02-19 19:57:58,469 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-02-19 19:57:58,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:57:58,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-02-19 19:57:58,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2021-02-19 19:57:58,469 INFO L87 Difference]: Start difference. First operand 72019 states and 184885 transitions. Second operand has 30 states, 30 states have (on average 2.6) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:57:59,378 WARN L202 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2021-02-19 19:58:02,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:58:02,694 INFO L93 Difference]: Finished difference Result 73486 states and 187932 transitions. [2021-02-19 19:58:02,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-02-19 19:58:02,696 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-02-19 19:58:02,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:58:02,801 INFO L225 Difference]: With dead ends: 73486 [2021-02-19 19:58:02,802 INFO L226 Difference]: Without dead ends: 73482 [2021-02-19 19:58:02,803 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5767 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3791, Invalid=12211, Unknown=0, NotChecked=0, Total=16002 [2021-02-19 19:58:02,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73482 states. [2021-02-19 19:58:03,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73482 to 72019. [2021-02-19 19:58:03,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72019 states, 72018 states have (on average 2.5667610875059013) internal successors, (184853), 72018 states have internal predecessors, (184853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:03,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72019 states to 72019 states and 184853 transitions. [2021-02-19 19:58:03,839 INFO L78 Accepts]: Start accepts. Automaton has 72019 states and 184853 transitions. Word has length 44 [2021-02-19 19:58:03,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:58:03,839 INFO L480 AbstractCegarLoop]: Abstraction has 72019 states and 184853 transitions. [2021-02-19 19:58:03,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.6) internal successors, (78), 29 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:03,839 INFO L276 IsEmpty]: Start isEmpty. Operand 72019 states and 184853 transitions. [2021-02-19 19:58:03,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-19 19:58:03,876 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:58:03,876 INFO L506 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:58:04,077 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10531 [2021-02-19 19:58:04,077 INFO L428 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:58:04,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:58:04,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1379137557, now seen corresponding path program 148 times [2021-02-19 19:58:04,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:58:04,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480163506] [2021-02-19 19:58:04,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:58:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:58:04,210 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 69 proven. 43 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:58:04,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480163506] [2021-02-19 19:58:04,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991527923] [2021-02-19 19:58:04,211 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 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 [2021-02-19 19:58:04,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:58:04,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:58:04,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-02-19 19:58:04,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:58:04,777 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 57 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:58:04,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:58:04,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 19] total 29 [2021-02-19 19:58:04,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627400176] [2021-02-19 19:58:04,778 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-02-19 19:58:04,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:58:04,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-02-19 19:58:04,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2021-02-19 19:58:04,778 INFO L87 Difference]: Start difference. First operand 72019 states and 184853 transitions. Second operand has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:07,454 WARN L202 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2021-02-19 19:58:08,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:58:08,105 INFO L93 Difference]: Finished difference Result 89850 states and 230059 transitions. [2021-02-19 19:58:08,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-02-19 19:58:08,107 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-02-19 19:58:08,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:58:08,244 INFO L225 Difference]: With dead ends: 89850 [2021-02-19 19:58:08,244 INFO L226 Difference]: Without dead ends: 89823 [2021-02-19 19:58:08,245 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3652 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2745, Invalid=8385, Unknown=0, NotChecked=0, Total=11130 [2021-02-19 19:58:08,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89823 states. [2021-02-19 19:58:09,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89823 to 71875. [2021-02-19 19:58:09,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71875 states, 71874 states have (on average 2.574004507888805) internal successors, (185004), 71874 states have internal predecessors, (185004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71875 states to 71875 states and 185004 transitions. [2021-02-19 19:58:09,595 INFO L78 Accepts]: Start accepts. Automaton has 71875 states and 185004 transitions. Word has length 44 [2021-02-19 19:58:09,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:58:09,595 INFO L480 AbstractCegarLoop]: Abstraction has 71875 states and 185004 transitions. [2021-02-19 19:58:09,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.6666666666666665) internal successors, (80), 29 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:09,595 INFO L276 IsEmpty]: Start isEmpty. Operand 71875 states and 185004 transitions. [2021-02-19 19:58:09,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-19 19:58:09,630 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:58:09,630 INFO L506 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:58:09,830 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10532 [2021-02-19 19:58:09,831 INFO L428 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:58:09,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:58:09,831 INFO L82 PathProgramCache]: Analyzing trace with hash -239342469, now seen corresponding path program 149 times [2021-02-19 19:58:09,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:58:09,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132857261] [2021-02-19 19:58:09,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:58:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:58:10,008 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 51 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:58:10,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132857261] [2021-02-19 19:58:10,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068177237] [2021-02-19 19:58:10,008 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 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 [2021-02-19 19:58:10,034 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-02-19 19:58:10,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:58:10,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-02-19 19:58:10,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:58:10,600 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 51 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:58:10,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:58:10,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19] total 30 [2021-02-19 19:58:10,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082499845] [2021-02-19 19:58:10,600 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-02-19 19:58:10,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:58:10,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-02-19 19:58:10,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=744, Unknown=0, NotChecked=0, Total=930 [2021-02-19 19:58:10,601 INFO L87 Difference]: Start difference. First operand 71875 states and 185004 transitions. Second operand has 31 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 30 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:15,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:58:15,218 INFO L93 Difference]: Finished difference Result 76106 states and 194599 transitions. [2021-02-19 19:58:15,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-02-19 19:58:15,219 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 30 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-02-19 19:58:15,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:58:15,325 INFO L225 Difference]: With dead ends: 76106 [2021-02-19 19:58:15,325 INFO L226 Difference]: Without dead ends: 76084 [2021-02-19 19:58:15,326 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5971 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3872, Invalid=12640, Unknown=0, NotChecked=0, Total=16512 [2021-02-19 19:58:15,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76084 states. [2021-02-19 19:58:16,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76084 to 73137. [2021-02-19 19:58:16,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73137 states, 73136 states have (on average 2.575434806388099) internal successors, (188357), 73136 states have internal predecessors, (188357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:16,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73137 states to 73137 states and 188357 transitions. [2021-02-19 19:58:16,663 INFO L78 Accepts]: Start accepts. Automaton has 73137 states and 188357 transitions. Word has length 44 [2021-02-19 19:58:16,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:58:16,663 INFO L480 AbstractCegarLoop]: Abstraction has 73137 states and 188357 transitions. [2021-02-19 19:58:16,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 30 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:16,663 INFO L276 IsEmpty]: Start isEmpty. Operand 73137 states and 188357 transitions. [2021-02-19 19:58:16,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-19 19:58:16,699 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:58:16,699 INFO L506 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:58:16,913 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10533 [2021-02-19 19:58:16,913 INFO L428 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:58:16,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:58:16,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1455092727, now seen corresponding path program 150 times [2021-02-19 19:58:16,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:58:16,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364978757] [2021-02-19 19:58:16,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:58:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:58:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 42 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:58:17,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364978757] [2021-02-19 19:58:17,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139195384] [2021-02-19 19:58:17,075 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-02-19 19:58:17,102 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-02-19 19:58:17,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:58:17,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-02-19 19:58:17,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:58:17,805 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 42 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:58:17,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:58:17,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19] total 31 [2021-02-19 19:58:17,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967963919] [2021-02-19 19:58:17,805 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-02-19 19:58:17,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:58:17,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-02-19 19:58:17,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=807, Unknown=0, NotChecked=0, Total=992 [2021-02-19 19:58:17,806 INFO L87 Difference]: Start difference. First operand 73137 states and 188357 transitions. Second operand has 32 states, 32 states have (on average 2.4375) internal successors, (78), 31 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:22,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:58:22,355 INFO L93 Difference]: Finished difference Result 78532 states and 200306 transitions. [2021-02-19 19:58:22,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-02-19 19:58:22,356 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.4375) internal successors, (78), 31 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-02-19 19:58:22,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:58:22,473 INFO L225 Difference]: With dead ends: 78532 [2021-02-19 19:58:22,473 INFO L226 Difference]: Without dead ends: 78486 [2021-02-19 19:58:22,474 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6281 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3964, Invalid=13066, Unknown=0, NotChecked=0, Total=17030 [2021-02-19 19:58:22,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78486 states. [2021-02-19 19:58:23,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78486 to 73094. [2021-02-19 19:58:23,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73094 states, 73093 states have (on average 2.579768240460783) internal successors, (188563), 73093 states have internal predecessors, (188563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:23,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73094 states to 73094 states and 188563 transitions. [2021-02-19 19:58:23,734 INFO L78 Accepts]: Start accepts. Automaton has 73094 states and 188563 transitions. Word has length 44 [2021-02-19 19:58:23,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:58:23,734 INFO L480 AbstractCegarLoop]: Abstraction has 73094 states and 188563 transitions. [2021-02-19 19:58:23,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.4375) internal successors, (78), 31 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:23,734 INFO L276 IsEmpty]: Start isEmpty. Operand 73094 states and 188563 transitions. [2021-02-19 19:58:23,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-19 19:58:23,770 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:58:23,770 INFO L506 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:58:23,970 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10534 [2021-02-19 19:58:23,970 INFO L428 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:58:23,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:58:23,970 INFO L82 PathProgramCache]: Analyzing trace with hash 2014710899, now seen corresponding path program 151 times [2021-02-19 19:58:23,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:58:23,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796891138] [2021-02-19 19:58:23,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:58:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:58:24,145 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 37 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:58:24,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796891138] [2021-02-19 19:58:24,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683503371] [2021-02-19 19:58:24,145 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 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 [2021-02-19 19:58:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:58:24,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-02-19 19:58:24,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:58:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 37 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:58:24,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:58:24,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19] total 32 [2021-02-19 19:58:24,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737808128] [2021-02-19 19:58:24,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-02-19 19:58:24,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:58:24,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-02-19 19:58:24,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2021-02-19 19:58:24,774 INFO L87 Difference]: Start difference. First operand 73094 states and 188563 transitions. Second operand has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:29,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:58:29,577 INFO L93 Difference]: Finished difference Result 79388 states and 202095 transitions. [2021-02-19 19:58:29,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-02-19 19:58:29,579 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-02-19 19:58:29,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:58:29,696 INFO L225 Difference]: With dead ends: 79388 [2021-02-19 19:58:29,696 INFO L226 Difference]: Without dead ends: 79324 [2021-02-19 19:58:29,697 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6570 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4066, Invalid=13490, Unknown=0, NotChecked=0, Total=17556 [2021-02-19 19:58:29,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79324 states. [2021-02-19 19:58:30,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79324 to 70876. [2021-02-19 19:58:30,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70876 states, 70875 states have (on average 2.586031746031746) internal successors, (183285), 70875 states have internal predecessors, (183285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:31,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70876 states to 70876 states and 183285 transitions. [2021-02-19 19:58:31,001 INFO L78 Accepts]: Start accepts. Automaton has 70876 states and 183285 transitions. Word has length 44 [2021-02-19 19:58:31,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:58:31,001 INFO L480 AbstractCegarLoop]: Abstraction has 70876 states and 183285 transitions. [2021-02-19 19:58:31,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.3636363636363638) internal successors, (78), 32 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:31,001 INFO L276 IsEmpty]: Start isEmpty. Operand 70876 states and 183285 transitions. [2021-02-19 19:58:31,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-19 19:58:31,040 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:58:31,040 INFO L506 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:58:31,240 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10535 [2021-02-19 19:58:31,240 INFO L428 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:58:31,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:58:31,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1358105105, now seen corresponding path program 152 times [2021-02-19 19:58:31,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:58:31,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805098886] [2021-02-19 19:58:31,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:58:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:58:31,465 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:58:31,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805098886] [2021-02-19 19:58:31,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755345504] [2021-02-19 19:58:31,465 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 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 [2021-02-19 19:58:31,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:58:31,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:58:31,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-02-19 19:58:31,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:58:32,129 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:58:32,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:58:32,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 33 [2021-02-19 19:58:32,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958580449] [2021-02-19 19:58:32,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-02-19 19:58:32,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:58:32,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-02-19 19:58:32,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=927, Unknown=0, NotChecked=0, Total=1122 [2021-02-19 19:58:32,130 INFO L87 Difference]: Start difference. First operand 70876 states and 183285 transitions. Second operand has 34 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 33 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:34,185 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2021-02-19 19:58:36,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:58:36,994 INFO L93 Difference]: Finished difference Result 78292 states and 198968 transitions. [2021-02-19 19:58:36,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-02-19 19:58:36,995 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 33 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-02-19 19:58:36,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:58:37,104 INFO L225 Difference]: With dead ends: 78292 [2021-02-19 19:58:37,104 INFO L226 Difference]: Without dead ends: 78222 [2021-02-19 19:58:37,105 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6842 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4177, Invalid=13913, Unknown=0, NotChecked=0, Total=18090 [2021-02-19 19:58:37,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78222 states. [2021-02-19 19:58:38,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78222 to 66237. [2021-02-19 19:58:38,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66237 states, 66236 states have (on average 2.5923817863397547) internal successors, (171709), 66236 states have internal predecessors, (171709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:38,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66237 states to 66237 states and 171709 transitions. [2021-02-19 19:58:38,266 INFO L78 Accepts]: Start accepts. Automaton has 66237 states and 171709 transitions. Word has length 44 [2021-02-19 19:58:38,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:58:38,266 INFO L480 AbstractCegarLoop]: Abstraction has 66237 states and 171709 transitions. [2021-02-19 19:58:38,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.2941176470588234) internal successors, (78), 33 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:38,266 INFO L276 IsEmpty]: Start isEmpty. Operand 66237 states and 171709 transitions. [2021-02-19 19:58:38,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-19 19:58:38,299 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:58:38,299 INFO L506 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:58:38,499 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10536,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:58:38,499 INFO L428 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:58:38,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:58:38,499 INFO L82 PathProgramCache]: Analyzing trace with hash 66023531, now seen corresponding path program 153 times [2021-02-19 19:58:38,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:58:38,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252500296] [2021-02-19 19:58:38,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:58:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:58:38,729 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 39 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:58:38,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252500296] [2021-02-19 19:58:38,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454756287] [2021-02-19 19:58:38,730 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 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 [2021-02-19 19:58:38,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-02-19 19:58:38,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:58:38,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-02-19 19:58:38,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:58:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 39 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:58:39,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:58:39,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 34 [2021-02-19 19:58:39,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702388477] [2021-02-19 19:58:39,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-02-19 19:58:39,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:58:39,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-02-19 19:58:39,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190 [2021-02-19 19:58:39,452 INFO L87 Difference]: Start difference. First operand 66237 states and 171709 transitions. Second operand has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 34 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:44,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:58:44,198 INFO L93 Difference]: Finished difference Result 75317 states and 190900 transitions. [2021-02-19 19:58:44,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-02-19 19:58:44,199 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 34 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-02-19 19:58:44,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:58:44,311 INFO L225 Difference]: With dead ends: 75317 [2021-02-19 19:58:44,311 INFO L226 Difference]: Without dead ends: 75249 [2021-02-19 19:58:44,313 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7072 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=4296, Invalid=14336, Unknown=0, NotChecked=0, Total=18632 [2021-02-19 19:58:44,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75249 states. [2021-02-19 19:58:45,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75249 to 60412. [2021-02-19 19:58:45,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60412 states, 60411 states have (on average 2.5961000480045024) internal successors, (156833), 60411 states have internal predecessors, (156833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:45,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60412 states to 60412 states and 156833 transitions. [2021-02-19 19:58:45,412 INFO L78 Accepts]: Start accepts. Automaton has 60412 states and 156833 transitions. Word has length 44 [2021-02-19 19:58:45,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:58:45,412 INFO L480 AbstractCegarLoop]: Abstraction has 60412 states and 156833 transitions. [2021-02-19 19:58:45,412 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 34 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:45,412 INFO L276 IsEmpty]: Start isEmpty. Operand 60412 states and 156833 transitions. [2021-02-19 19:58:45,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-19 19:58:45,443 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:58:45,443 INFO L506 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:58:45,643 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10537,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:58:45,643 INFO L428 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:58:45,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:58:45,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1440924697, now seen corresponding path program 154 times [2021-02-19 19:58:45,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:58:45,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605434823] [2021-02-19 19:58:45,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:58:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:58:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 46 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:58:45,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605434823] [2021-02-19 19:58:45,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795998174] [2021-02-19 19:58:45,901 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 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 [2021-02-19 19:58:45,923 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-02-19 19:58:45,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:58:45,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-02-19 19:58:45,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:58:46,160 WARN L202 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2021-02-19 19:58:46,807 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 46 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:58:46,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:58:46,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 35 [2021-02-19 19:58:46,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977057015] [2021-02-19 19:58:46,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-02-19 19:58:46,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:58:46,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-02-19 19:58:46,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=1039, Unknown=0, NotChecked=0, Total=1260 [2021-02-19 19:58:46,808 INFO L87 Difference]: Start difference. First operand 60412 states and 156833 transitions. Second operand has 36 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 35 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:51,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:58:51,435 INFO L93 Difference]: Finished difference Result 71294 states and 180046 transitions. [2021-02-19 19:58:51,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-02-19 19:58:51,436 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 35 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-02-19 19:58:51,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:58:51,562 INFO L225 Difference]: With dead ends: 71294 [2021-02-19 19:58:51,562 INFO L226 Difference]: Without dead ends: 71236 [2021-02-19 19:58:51,563 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7215 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4422, Invalid=14760, Unknown=0, NotChecked=0, Total=19182 [2021-02-19 19:58:51,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71236 states. [2021-02-19 19:58:52,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71236 to 55869. [2021-02-19 19:58:52,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55869 states, 55868 states have (on average 2.594168396935634) internal successors, (144931), 55868 states have internal predecessors, (144931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:52,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55869 states to 55869 states and 144931 transitions. [2021-02-19 19:58:52,588 INFO L78 Accepts]: Start accepts. Automaton has 55869 states and 144931 transitions. Word has length 44 [2021-02-19 19:58:52,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:58:52,588 INFO L480 AbstractCegarLoop]: Abstraction has 55869 states and 144931 transitions. [2021-02-19 19:58:52,588 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 35 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:52,589 INFO L276 IsEmpty]: Start isEmpty. Operand 55869 states and 144931 transitions. [2021-02-19 19:58:52,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-19 19:58:52,620 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:58:52,620 INFO L506 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:58:52,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10538 [2021-02-19 19:58:52,821 INFO L428 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:58:52,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:58:52,821 INFO L82 PathProgramCache]: Analyzing trace with hash 625166511, now seen corresponding path program 155 times [2021-02-19 19:58:52,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:58:52,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42528260] [2021-02-19 19:58:52,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:58:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:58:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 48 proven. 64 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:58:53,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42528260] [2021-02-19 19:58:53,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115471930] [2021-02-19 19:58:53,112 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 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 [2021-02-19 19:58:53,136 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-02-19 19:58:53,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:58:53,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-02-19 19:58:53,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:58:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 42 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:58:53,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:58:53,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2021-02-19 19:58:53,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418640168] [2021-02-19 19:58:53,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-02-19 19:58:53,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:58:53,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-02-19 19:58:53,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1100, Unknown=0, NotChecked=0, Total=1332 [2021-02-19 19:58:53,828 INFO L87 Difference]: Start difference. First operand 55869 states and 144931 transitions. Second operand has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:59,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:58:59,004 INFO L93 Difference]: Finished difference Result 63141 states and 160316 transitions. [2021-02-19 19:58:59,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-02-19 19:58:59,006 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-02-19 19:58:59,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:58:59,101 INFO L225 Difference]: With dead ends: 63141 [2021-02-19 19:58:59,101 INFO L226 Difference]: Without dead ends: 63141 [2021-02-19 19:58:59,102 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5668 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4294, Invalid=13528, Unknown=0, NotChecked=0, Total=17822 [2021-02-19 19:58:59,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63141 states. [2021-02-19 19:58:59,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63141 to 51453. [2021-02-19 19:58:59,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51453 states, 51452 states have (on average 2.5921635699292542) internal successors, (133372), 51452 states have internal predecessors, (133372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:59,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51453 states to 51453 states and 133372 transitions. [2021-02-19 19:58:59,957 INFO L78 Accepts]: Start accepts. Automaton has 51453 states and 133372 transitions. Word has length 44 [2021-02-19 19:58:59,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:58:59,957 INFO L480 AbstractCegarLoop]: Abstraction has 51453 states and 133372 transitions. [2021-02-19 19:58:59,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 2.189189189189189) internal successors, (81), 36 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:58:59,957 INFO L276 IsEmpty]: Start isEmpty. Operand 51453 states and 133372 transitions. [2021-02-19 19:58:59,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-19 19:58:59,982 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:58:59,982 INFO L506 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:59:00,182 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10539,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:59:00,182 INFO L428 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:59:00,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:59:00,183 INFO L82 PathProgramCache]: Analyzing trace with hash -560643093, now seen corresponding path program 156 times [2021-02-19 19:59:00,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:59:00,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838610654] [2021-02-19 19:59:00,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:59:00,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:59:00,445 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 51 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:59:00,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838610654] [2021-02-19 19:59:00,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516655601] [2021-02-19 19:59:00,446 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 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 [2021-02-19 19:59:00,471 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-02-19 19:59:00,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:59:00,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-02-19 19:59:00,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:59:01,208 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 51 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:59:01,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:59:01,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 35 [2021-02-19 19:59:01,208 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797726319] [2021-02-19 19:59:01,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-02-19 19:59:01,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:59:01,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-02-19 19:59:01,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1053, Unknown=0, NotChecked=0, Total=1260 [2021-02-19 19:59:01,209 INFO L87 Difference]: Start difference. First operand 51453 states and 133372 transitions. Second operand has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:59:07,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:59:07,398 INFO L93 Difference]: Finished difference Result 57683 states and 146274 transitions. [2021-02-19 19:59:07,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2021-02-19 19:59:07,400 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-02-19 19:59:07,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:59:07,544 INFO L225 Difference]: With dead ends: 57683 [2021-02-19 19:59:07,544 INFO L226 Difference]: Without dead ends: 57500 [2021-02-19 19:59:07,545 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9516 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=5161, Invalid=20279, Unknown=0, NotChecked=0, Total=25440 [2021-02-19 19:59:07,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57500 states. [2021-02-19 19:59:08,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57500 to 50307. [2021-02-19 19:59:08,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50307 states, 50306 states have (on average 2.5821770762930862) internal successors, (129899), 50306 states have internal predecessors, (129899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:59:08,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50307 states to 50307 states and 129899 transitions. [2021-02-19 19:59:08,407 INFO L78 Accepts]: Start accepts. Automaton has 50307 states and 129899 transitions. Word has length 44 [2021-02-19 19:59:08,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:59:08,407 INFO L480 AbstractCegarLoop]: Abstraction has 50307 states and 129899 transitions. [2021-02-19 19:59:08,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.1944444444444446) internal successors, (79), 35 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:59:08,407 INFO L276 IsEmpty]: Start isEmpty. Operand 50307 states and 129899 transitions. [2021-02-19 19:59:08,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-19 19:59:08,430 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:59:08,430 INFO L506 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:59:08,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10540 [2021-02-19 19:59:08,634 INFO L428 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:59:08,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:59:08,634 INFO L82 PathProgramCache]: Analyzing trace with hash 853788335, now seen corresponding path program 157 times [2021-02-19 19:59:08,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:59:08,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756399324] [2021-02-19 19:59:08,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:59:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:59:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 47 proven. 65 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:59:08,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756399324] [2021-02-19 19:59:08,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096505542] [2021-02-19 19:59:08,899 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 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 [2021-02-19 19:59:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:59:08,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-02-19 19:59:08,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:59:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 42 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:59:09,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:59:09,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 35 [2021-02-19 19:59:09,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272278857] [2021-02-19 19:59:09,641 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-02-19 19:59:09,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:59:09,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-02-19 19:59:09,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1049, Unknown=0, NotChecked=0, Total=1260 [2021-02-19 19:59:09,642 INFO L87 Difference]: Start difference. First operand 50307 states and 129899 transitions. Second operand has 36 states, 36 states have (on average 2.25) internal successors, (81), 35 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:59:10,088 WARN L202 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 12 [2021-02-19 19:59:15,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:59:15,199 INFO L93 Difference]: Finished difference Result 60574 states and 152493 transitions. [2021-02-19 19:59:15,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-02-19 19:59:15,200 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.25) internal successors, (81), 35 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-02-19 19:59:15,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:59:15,288 INFO L225 Difference]: With dead ends: 60574 [2021-02-19 19:59:15,289 INFO L226 Difference]: Without dead ends: 60574 [2021-02-19 19:59:15,290 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6651 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=4738, Invalid=15002, Unknown=0, NotChecked=0, Total=19740 [2021-02-19 19:59:15,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60574 states. [2021-02-19 19:59:15,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60574 to 46600. [2021-02-19 19:59:15,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46600 states, 46599 states have (on average 2.5784029700208158) internal successors, (120151), 46599 states have internal predecessors, (120151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:59:16,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46600 states to 46600 states and 120151 transitions. [2021-02-19 19:59:16,059 INFO L78 Accepts]: Start accepts. Automaton has 46600 states and 120151 transitions. Word has length 44 [2021-02-19 19:59:16,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:59:16,059 INFO L480 AbstractCegarLoop]: Abstraction has 46600 states and 120151 transitions. [2021-02-19 19:59:16,059 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.25) internal successors, (81), 35 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:59:16,059 INFO L276 IsEmpty]: Start isEmpty. Operand 46600 states and 120151 transitions. [2021-02-19 19:59:16,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-19 19:59:16,082 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:59:16,082 INFO L506 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:59:16,289 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10541 [2021-02-19 19:59:16,289 INFO L428 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:59:16,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:59:16,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1639145707, now seen corresponding path program 158 times [2021-02-19 19:59:16,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:59:16,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921342925] [2021-02-19 19:59:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:59:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:59:16,538 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 43 proven. 69 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:59:16,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921342925] [2021-02-19 19:59:16,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579642917] [2021-02-19 19:59:16,538 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 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 [2021-02-19 19:59:16,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-19 19:59:16,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:59:16,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-02-19 19:59:16,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:59:17,294 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 42 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:59:17,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:59:17,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 34 [2021-02-19 19:59:17,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507455588] [2021-02-19 19:59:17,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-02-19 19:59:17,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:59:17,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-02-19 19:59:17,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2021-02-19 19:59:17,295 INFO L87 Difference]: Start difference. First operand 46600 states and 120151 transitions. Second operand has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:59:22,217 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2021-02-19 19:59:22,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 19:59:22,901 INFO L93 Difference]: Finished difference Result 51978 states and 131845 transitions. [2021-02-19 19:59:22,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-02-19 19:59:22,903 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-02-19 19:59:22,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 19:59:22,974 INFO L225 Difference]: With dead ends: 51978 [2021-02-19 19:59:22,975 INFO L226 Difference]: Without dead ends: 51840 [2021-02-19 19:59:22,976 INFO L762 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8358 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=4391, Invalid=17365, Unknown=0, NotChecked=0, Total=21756 [2021-02-19 19:59:23,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51840 states. [2021-02-19 19:59:23,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51840 to 46019. [2021-02-19 19:59:23,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46019 states, 46018 states have (on average 2.568690512408188) internal successors, (118206), 46018 states have internal predecessors, (118206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:59:23,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46019 states to 46019 states and 118206 transitions. [2021-02-19 19:59:23,802 INFO L78 Accepts]: Start accepts. Automaton has 46019 states and 118206 transitions. Word has length 44 [2021-02-19 19:59:23,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 19:59:23,802 INFO L480 AbstractCegarLoop]: Abstraction has 46019 states and 118206 transitions. [2021-02-19 19:59:23,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-02-19 19:59:23,802 INFO L276 IsEmpty]: Start isEmpty. Operand 46019 states and 118206 transitions. [2021-02-19 19:59:23,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-19 19:59:23,824 INFO L498 BasicCegarLoop]: Found error trace [2021-02-19 19:59:23,824 INFO L506 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 19:59:24,024 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10542 [2021-02-19 19:59:24,025 INFO L428 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-19 19:59:24,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 19:59:24,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1970551633, now seen corresponding path program 159 times [2021-02-19 19:59:24,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 19:59:24,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746723477] [2021-02-19 19:59:24,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 19:59:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 19:59:24,284 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 46 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-19 19:59:24,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746723477] [2021-02-19 19:59:24,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908269100] [2021-02-19 19:59:24,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-02-19 19:59:24,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-02-19 19:59:24,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-19 19:59:24,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-02-19 19:59:24,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-19 19:59:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 42 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 19:59:25,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-19 19:59:25,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 34 [2021-02-19 19:59:25,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222584946] [2021-02-19 19:59:25,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-02-19 19:59:25,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 19:59:25,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-02-19 19:59:25,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=996, Unknown=0, NotChecked=0, Total=1190 [2021-02-19 19:59:25,018 INFO L87 Difference]: Start difference. First operand 46019 states and 118206 transitions. Second operand has 35 states, 35 states have (on average 2.3142857142857145) internal successors, (81), 34 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-02-19 19:59:27,427 WARN L219 SmtUtils]: Removed 3 from assertion stack [2021-02-19 19:59:27,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-02-19 19:59:27,627 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10543,160 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-19 19:59:27,627 WARN L545 AbstractCegarLoop]: Verification canceled [2021-02-19 19:59:27,630 WARN L224 ceAbstractionStarter]: Timeout [2021-02-19 19:59:27,630 INFO L202 PluginConnector]: Adding new model counter-fun-mnX.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 07:59:27 BasicIcfg [2021-02-19 19:59:27,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 19:59:27,631 INFO L168 Benchmark]: Toolchain (without parser) took 538957.34 ms. Allocated memory was 341.8 MB in the beginning and 6.8 GB in the end (delta: 6.4 GB). Free memory was 321.7 MB in the beginning and 4.4 GB in the end (delta: -4.1 GB). Peak memory consumption was 2.4 GB. Max. memory is 16.0 GB. [2021-02-19 19:59:27,631 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.09 ms. Allocated memory is still 341.8 MB. Free memory was 322.9 MB in the beginning and 322.8 MB in the end (delta: 73.7 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-02-19 19:59:27,631 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.50 ms. Allocated memory is still 341.8 MB. Free memory was 321.2 MB in the beginning and 319.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-02-19 19:59:27,631 INFO L168 Benchmark]: Boogie Preprocessor took 12.69 ms. Allocated memory is still 341.8 MB. Free memory was 319.8 MB in the beginning and 318.8 MB in the end (delta: 955.9 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-02-19 19:59:27,631 INFO L168 Benchmark]: RCFGBuilder took 188.24 ms. Allocated memory is still 341.8 MB. Free memory was 318.7 MB in the beginning and 306.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. [2021-02-19 19:59:27,631 INFO L168 Benchmark]: TraceAbstraction took 538725.54 ms. Allocated memory was 341.8 MB in the beginning and 6.8 GB in the end (delta: 6.4 GB). Free memory was 306.3 MB in the beginning and 4.4 GB in the end (delta: -4.1 GB). Peak memory consumption was 2.4 GB. Max. memory is 16.0 GB. [2021-02-19 19:59:27,631 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 0.09 ms. Allocated memory is still 341.8 MB. Free memory was 322.9 MB in the beginning and 322.8 MB in the end (delta: 73.7 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.50 ms. Allocated memory is still 341.8 MB. Free memory was 321.2 MB in the beginning and 319.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.69 ms. Allocated memory is still 341.8 MB. Free memory was 319.8 MB in the beginning and 318.8 MB in the end (delta: 955.9 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 188.24 ms. Allocated memory is still 341.8 MB. Free memory was 318.7 MB in the beginning and 306.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.0 GB. * TraceAbstraction took 538725.54 ms. Allocated memory was 341.8 MB in the beginning and 6.8 GB in the end (delta: 6.4 GB). Free memory was 306.3 MB in the beginning and 4.4 GB in the end (delta: -4.1 GB). Peak memory consumption was 2.4 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 52). Cancelled while BasicCegarLoop was constructing difference of abstraction (46019states) and FLOYD_HOARE automaton (currently 51 states, 35 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 20 for 12ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 538.6s, OverallIterations: 164, TraceHistogramMax: 8, AutomataDifference: 233.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7337 SDtfs, 48160 SDslu, 70724 SDs, 0 SdLazy, 79987 SolverSat, 11542 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 38.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14896 GetRequests, 4074 SyntacticMatches, 21 SemanticMatches, 10800 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360693 ImplicationChecksByTransitivity, 262.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73137occurred in iteration=154, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 44.3s AutomataMinimizationTime, 163 MinimizatonAttempts, 417423 StatesRemovedByMinimization, 163 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 221.4s InterpolantComputationTime, 10848 NumberOfCodeBlocks, 10848 NumberOfCodeBlocksAsserted, 840 NumberOfCheckSat, 10525 ConstructedInterpolants, 110 QuantifiedInterpolants, 5724417 SizeOfPredicates, 568 NumberOfNonLiveVariables, 15505 ConjunctsInSsa, 2949 ConjunctsInUnsatCore, 323 InterpolantComputations, 5 PerfectInterpolantSequences, 6093/17835 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