/usr/bin/java -Xmx8000000000 -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-POR-NewStatesSleepPersistent-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/three-array-max.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 09:04:55,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 09:04:55,645 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 09:04:55,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-10 09:04:55,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-10 09:04:55,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-10 09:04:55,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-10 09:04:55,726 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-POR-NewStatesSleepPersistent-NoLbe-Lockstep.epf [2021-07-10 09:04:55,754 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 09:04:55,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 09:04:55,755 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 09:04:55,755 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 09:04:55,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 09:04:55,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 09:04:55,757 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 09:04:55,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 09:04:55,758 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 09:04:55,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 09:04:55,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 09:04:55,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 09:04:55,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 09:04:55,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 09:04:55,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 09:04:55,759 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 09:04:55,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 09:04:55,759 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 09:04:55,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 09:04:55,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 09:04:55,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 09:04:55,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 09:04:55,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 09:04:55,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 09:04:55,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 09:04:55,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 09:04:55,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 09:04:55,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 09:04:55,761 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-10 09:04:55,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 09:04:55,761 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 09:04:55,761 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 09:04:55,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 09:04:55,761 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES [2021-07-10 09:04:55,762 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 09:04:56,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 09:04:56,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 09:04:56,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 09:04:56,033 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 09:04:56,037 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 09:04:56,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/three-array-max.wvr.bpl [2021-07-10 09:04:56,038 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/three-array-max.wvr.bpl' [2021-07-10 09:04:56,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 09:04:56,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 09:04:56,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 09:04:56,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 09:04:56,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 09:04:56,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:04:56" (1/1) ... [2021-07-10 09:04:56,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:04:56" (1/1) ... [2021-07-10 09:04:56,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 09:04:56,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 09:04:56,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 09:04:56,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 09:04:56,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:04:56" (1/1) ... [2021-07-10 09:04:56,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:04:56" (1/1) ... [2021-07-10 09:04:56,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:04:56" (1/1) ... [2021-07-10 09:04:56,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:04:56" (1/1) ... [2021-07-10 09:04:56,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:04:56" (1/1) ... [2021-07-10 09:04:56,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:04:56" (1/1) ... [2021-07-10 09:04:56,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:04:56" (1/1) ... [2021-07-10 09:04:56,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 09:04:56,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 09:04:56,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 09:04:56,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 09:04:56,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:04:56" (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 [2021-07-10 09:04:56,164 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 09:04:56,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 09:04:56,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 09:04:56,164 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 09:04:56,164 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 09:04:56,164 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 09:04:56,164 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 09:04:56,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 09:04:56,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 09:04:56,164 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-10 09:04:56,165 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-10 09:04:56,165 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-10 09:04:56,165 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-10 09:04:56,403 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 09:04:56,404 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-10 09:04:56,405 INFO L202 PluginConnector]: Adding new model three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 09:04:56 BoogieIcfgContainer [2021-07-10 09:04:56,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 09:04:56,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 09:04:56,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 09:04:56,408 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 09:04:56,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:04:56" (1/2) ... [2021-07-10 09:04:56,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f422151 and model type three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 09:04:56, skipping insertion in model container [2021-07-10 09:04:56,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "three-array-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 09:04:56" (2/2) ... [2021-07-10 09:04:56,410 INFO L111 eAbstractionObserver]: Analyzing ICFG three-array-max.wvr.bpl [2021-07-10 09:04:56,413 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 09:04:56,414 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 09:04:56,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 09:04:56,414 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 09:04:56,470 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-10 09:04:56,486 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-10 09:04:56,552 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 09:04:56,552 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 09:04:56,553 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 09:04:56,553 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 09:04:56,553 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 09:04:56,553 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 09:04:56,553 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 09:04:56,553 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 09:04:56,679 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:04:56,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:04:56,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1399478126, now seen corresponding path program 1 times [2021-07-10 09:04:56,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:04:56,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508435709] [2021-07-10 09:04:56,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:04:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:04:56,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:04:56,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:04:56,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508435709] [2021-07-10 09:04:56,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508435709] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 09:04:56,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 09:04:56,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-10 09:04:56,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626968587] [2021-07-10 09:04:56,848 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-10 09:04:56,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:04:56,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-10 09:04:56,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-10 09:04:56,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:04:56,860 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:04:56,861 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 09:04:56,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:04:56,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:04:56,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-10 09:04:56,916 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:04:56,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:04:56,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1117222132, now seen corresponding path program 1 times [2021-07-10 09:04:56,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:04:56,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631994429] [2021-07-10 09:04:56,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:04:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:04:57,361 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 30 [2021-07-10 09:04:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:04:57,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:04:57,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631994429] [2021-07-10 09:04:57,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631994429] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:04:57,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854429996] [2021-07-10 09:04:57,391 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 [2021-07-10 09:04:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:04:57,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2021-07-10 09:04:57,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:04:57,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 24 [2021-07-10 09:04:57,862 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-10 09:04:57,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 24 [2021-07-10 09:04:57,876 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-10 09:04:57,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 24 [2021-07-10 09:04:57,885 INFO L550 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-10 09:04:57,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 24 [2021-07-10 09:04:57,894 INFO L550 ElimStorePlain]: Start of recursive call 5: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-10 09:04:57,942 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:04:57,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-07-10 09:04:57,956 INFO L550 ElimStorePlain]: Start of recursive call 6: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-10 09:04:57,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-07-10 09:04:57,968 INFO L550 ElimStorePlain]: Start of recursive call 7: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-10 09:04:57,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2021-07-10 09:04:57,982 INFO L550 ElimStorePlain]: Start of recursive call 8: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-10 09:04:57,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-07-10 09:04:57,992 INFO L550 ElimStorePlain]: Start of recursive call 9: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-10 09:04:58,029 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:04:58,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-07-10 09:04:58,038 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-07-10 09:04:58,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-07-10 09:04:58,045 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-07-10 09:04:58,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-07-10 09:04:58,051 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-07-10 09:04:58,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-07-10 09:04:58,061 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-07-10 09:04:58,094 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:04:58,100 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-07-10 09:04:58,101 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 3 variables, input treesize:197, output treesize:58 [2021-07-10 09:04:58,191 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 [2021-07-10 09:04:58,193 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:04:58,199 INFO L628 ElimStorePlain]: treesize reduction 27, result has 15.6 percent of original size [2021-07-10 09:04:58,200 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1 vanished before elimination [2021-07-10 09:04:58,201 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:04:58,201 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:5 [2021-07-10 09:04:58,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:04:58,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854429996] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:04:58,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:04:58,210 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-07-10 09:04:58,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603123547] [2021-07-10 09:04:58,212 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-10 09:04:58,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:04:58,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-10 09:04:58,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-07-10 09:04:58,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:04:58,220 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:04:58,220 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 3.0) 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) [2021-07-10 09:04:58,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:04:58,220 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:04:58,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:04:58,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:04:58,657 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:04:58,658 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:04:58,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:04:58,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1049113256, now seen corresponding path program 2 times [2021-07-10 09:04:58,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:04:58,658 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679248633] [2021-07-10 09:04:58,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:04:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:04:58,731 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-10 09:04:58,732 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:04:58,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679248633] [2021-07-10 09:04:58,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679248633] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:04:58,734 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871199798] [2021-07-10 09:04:58,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-07-10 09:04:58,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 09:04:58,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:04:58,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-10 09:04:58,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:04:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-10 09:04:58,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871199798] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:04:58,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:04:58,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-07-10 09:04:58,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237169837] [2021-07-10 09:04:58,911 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-10 09:04:58,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:04:58,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-10 09:04:58,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-07-10 09:04:58,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:04:58,912 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:04:58,912 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 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) [2021-07-10 09:04:58,912 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:04:58,912 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:04:58,912 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:04:59,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:04:59,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:04:59,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-10 09:04:59,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-07-10 09:04:59,477 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:04:59,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:04:59,477 INFO L82 PathProgramCache]: Analyzing trace with hash 100439606, now seen corresponding path program 3 times [2021-07-10 09:04:59,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:04:59,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78434417] [2021-07-10 09:04:59,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:04:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:04:59,536 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 22 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-07-10 09:04:59,536 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:04:59,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78434417] [2021-07-10 09:04:59,536 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78434417] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:04:59,536 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601365502] [2021-07-10 09:04:59,536 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:04:59,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-10 09:04:59,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:04:59,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 9 conjunts are in the unsatisfiable core [2021-07-10 09:04:59,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:04:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-07-10 09:04:59,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601365502] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:04:59,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:04:59,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-07-10 09:04:59,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224330036] [2021-07-10 09:04:59,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-10 09:04:59,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:04:59,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-10 09:04:59,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-07-10 09:04:59,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:04:59,698 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:04:59,698 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 13 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) [2021-07-10 09:04:59,698 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:04:59,698 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:04:59,698 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-07-10 09:04:59,698 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:04:59,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:04:59,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:04:59,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-07-10 09:04:59,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-10 09:05:00,071 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:05:00,071 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:05:00,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:05:00,071 INFO L82 PathProgramCache]: Analyzing trace with hash -92030188, now seen corresponding path program 4 times [2021-07-10 09:05:00,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:05:00,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441078918] [2021-07-10 09:05:00,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:05:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:05:08,740 WARN L205 SmtUtils]: Spent 7.32 s on a formula simplification. DAG size of input: 143 DAG size of output: 225 [2021-07-10 09:05:09,252 WARN L205 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 44 [2021-07-10 09:05:35,234 WARN L205 SmtUtils]: Spent 25.98 s on a formula simplification. DAG size of input: 170 DAG size of output: 263 [2021-07-10 09:05:35,366 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 263 [2021-07-10 09:05:36,014 WARN L205 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 45 [2021-07-10 09:09:25,582 WARN L205 SmtUtils]: Spent 3.83 m on a formula simplification. DAG size of input: 270 DAG size of output: 171 [2021-07-10 09:09:25,735 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 166 [2021-07-10 09:09:26,023 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 40 [2021-07-10 09:13:22,404 WARN L205 SmtUtils]: Spent 3.94 m on a formula simplification. DAG size of input: 273 DAG size of output: 174 [2021-07-10 09:13:22,563 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 169 [2021-07-10 09:13:22,852 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 43 [2021-07-10 09:16:22,361 WARN L205 SmtUtils]: Spent 2.99 m on a formula simplification. DAG size of input: 243 DAG size of output: 121 [2021-07-10 09:16:22,600 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 53 [2021-07-10 09:19:22,884 WARN L205 SmtUtils]: Spent 3.00 m on a formula simplification. DAG size of input: 242 DAG size of output: 118 [2021-07-10 09:19:23,103 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 49 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown