/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-MCRwithDepranks.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/fork_loop_unsafe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-09 18:11:16,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-09 18:11:16,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-09 18:11:16,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-09 18:11:16,403 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-MCRwithDepranks.epf [2022-02-09 18:11:16,420 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-09 18:11:16,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-09 18:11:16,420 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-09 18:11:16,420 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-09 18:11:16,421 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-09 18:11:16,421 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-09 18:11:16,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-09 18:11:16,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-09 18:11:16,422 INFO L138 SettingsManager]: * Use SBE=true [2022-02-09 18:11:16,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-09 18:11:16,422 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-09 18:11:16,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-09 18:11:16,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-09 18:11:16,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-09 18:11:16,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-09 18:11:16,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-09 18:11:16,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-09 18:11:16,422 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-09 18:11:16,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-09 18:11:16,423 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-09 18:11:16,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-09 18:11:16,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-09 18:11:16,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-09 18:11:16,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-09 18:11:16,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-09 18:11:16,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 18:11:16,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-09 18:11:16,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-09 18:11:16,423 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-09 18:11:16,423 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-09 18:11:16,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-09 18:11:16,424 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-09 18:11:16,424 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-02-09 18:11:16,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-09 18:11:16,424 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-09 18:11:16,424 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-09 18:11:16,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-09 18:11:16,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-09 18:11:16,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-09 18:11:16,660 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-09 18:11:16,661 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-09 18:11:16,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_unsafe.bpl [2022-02-09 18:11:16,662 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_unsafe.bpl' [2022-02-09 18:11:16,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-09 18:11:16,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-09 18:11:16,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-09 18:11:16,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-09 18:11:16,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-09 18:11:16,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:11:16" (1/1) ... [2022-02-09 18:11:16,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:11:16" (1/1) ... [2022-02-09 18:11:16,701 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-09 18:11:16,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-09 18:11:16,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-09 18:11:16,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-09 18:11:16,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-09 18:11:16,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:11:16" (1/1) ... [2022-02-09 18:11:16,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:11:16" (1/1) ... [2022-02-09 18:11:16,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:11:16" (1/1) ... [2022-02-09 18:11:16,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:11:16" (1/1) ... [2022-02-09 18:11:16,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:11:16" (1/1) ... [2022-02-09 18:11:16,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:11:16" (1/1) ... [2022-02-09 18:11:16,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:11:16" (1/1) ... [2022-02-09 18:11:16,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-09 18:11:16,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-09 18:11:16,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-09 18:11:16,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-09 18:11:16,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:11:16" (1/1) ... [2022-02-09 18:11:16,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 18:11:16,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:16,745 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-09 18:11:16,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-09 18:11:16,806 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-09 18:11:16,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-09 18:11:16,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-09 18:11:16,806 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2022-02-09 18:11:16,806 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-02-09 18:11:16,806 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-02-09 18:11:16,807 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-09 18:11:16,853 INFO L234 CfgBuilder]: Building ICFG [2022-02-09 18:11:16,855 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-09 18:11:16,960 INFO L275 CfgBuilder]: Performing block encoding [2022-02-09 18:11:16,966 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-09 18:11:16,966 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-09 18:11:16,968 INFO L202 PluginConnector]: Adding new model fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 06:11:16 BoogieIcfgContainer [2022-02-09 18:11:16,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-09 18:11:16,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-09 18:11:16,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-09 18:11:16,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-09 18:11:16,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 06:11:16" (1/2) ... [2022-02-09 18:11:16,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cd4bc54 and model type fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 06:11:16, skipping insertion in model container [2022-02-09 18:11:16,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 06:11:16" (2/2) ... [2022-02-09 18:11:16,978 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_loop_unsafe.bpl [2022-02-09 18:11:16,986 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-09 18:11:16,986 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-09 18:11:16,986 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-09 18:11:16,986 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-09 18:11:17,009 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:17,009 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:17,010 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:17,012 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:17,026 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-09 18:11:17,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-09 18:11:17,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:17,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-09 18:11:17,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2022-02-09 18:11:17,097 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 18:11:17,107 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-09 18:11:17,107 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-09 18:11:17,113 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 13 places, 10 transitions, 25 flow [2022-02-09 18:11:17,133 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 20 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) [2022-02-09 18:11:17,145 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 10 transitions and produced 11 states. [2022-02-09 18:11:17,147 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-09 18:11:17,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:17,151 INFO L85 PathProgramCache]: Analyzing trace with hash 907643097, now seen corresponding path program 1 times [2022-02-09 18:11:17,158 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:17,158 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480089324] [2022-02-09 18:11:17,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:17,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:17,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:17,301 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:17,302 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480089324] [2022-02-09 18:11:17,302 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480089324] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:17,302 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392320554] [2022-02-09 18:11:17,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:17,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:17,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:17,304 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:17,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-09 18:11:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:17,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-09 18:11:17,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:17,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:17,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:17,530 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392320554] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:17,530 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:17,530 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-02-09 18:11:17,531 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203980265] [2022-02-09 18:11:17,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:17,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-09 18:11:17,534 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:17,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-09 18:11:17,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-09 18:11:17,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:17,607 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:17,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:17,607 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:17,645 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 17 transitions and produced 17 states. [2022-02-09 18:11:17,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-09 18:11:17,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-02-09 18:11:17,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-02-09 18:11:17,853 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-09 18:11:17,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:17,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1927773473, now seen corresponding path program 1 times [2022-02-09 18:11:17,854 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:17,854 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934840315] [2022-02-09 18:11:17,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:17,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 18:11:17,859 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-09 18:11:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 18:11:17,884 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-09 18:11:17,885 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-09 18:11:17,885 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 3 remaining) [2022-02-09 18:11:17,887 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 3 remaining) [2022-02-09 18:11:17,887 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 3 remaining) [2022-02-09 18:11:17,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-09 18:11:17,901 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-09 18:11:17,903 WARN L235 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-02-09 18:11:17,903 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-02-09 18:11:17,918 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:17,918 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:17,919 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:17,919 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:17,919 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:17,919 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:17,920 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:17,920 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:17,921 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-09 18:11:17,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-09 18:11:17,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:17,923 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-09 18:11:17,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2022-02-09 18:11:17,932 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 18:11:17,933 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-09 18:11:17,933 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-09 18:11:17,933 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 15 transitions, 42 flow [2022-02-09 18:11:17,944 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 112 states, 104 states have (on average 2.394230769230769) internal successors, (249), 111 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:17,946 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 10 transitions and produced 11 states. [2022-02-09 18:11:17,946 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-09 18:11:17,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:17,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1782742348, now seen corresponding path program 1 times [2022-02-09 18:11:17,947 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:17,947 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895761289] [2022-02-09 18:11:17,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:17,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:17,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:17,985 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:17,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895761289] [2022-02-09 18:11:17,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895761289] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:17,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547715090] [2022-02-09 18:11:17,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:17,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:17,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:18,020 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:18,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-09 18:11:18,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:18,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-09 18:11:18,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:18,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:18,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:18,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547715090] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:18,198 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:18,198 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-02-09 18:11:18,198 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440737521] [2022-02-09 18:11:18,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:18,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-09 18:11:18,199 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:18,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-09 18:11:18,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-09 18:11:18,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:18,200 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:18,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:18,201 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:18,284 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 24 transitions and produced 24 states. [2022-02-09 18:11:18,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-09 18:11:18,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:18,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:18,500 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-09 18:11:18,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:18,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1106096860, now seen corresponding path program 1 times [2022-02-09 18:11:18,501 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:18,501 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103163559] [2022-02-09 18:11:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:18,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 18:11:18,567 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:18,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103163559] [2022-02-09 18:11:18,567 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103163559] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:18,567 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410238759] [2022-02-09 18:11:18,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:18,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:18,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:18,572 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:18,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-09 18:11:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:18,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-09 18:11:18,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:18,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:18,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 18:11:18,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410238759] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:18,791 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:18,791 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 13 [2022-02-09 18:11:18,791 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005853593] [2022-02-09 18:11:18,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:18,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-09 18:11:18,794 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:18,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-09 18:11:18,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-02-09 18:11:18,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:18,795 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:18,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:18,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-02-09 18:11:18,796 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:18,913 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 31 transitions and produced 30 states. [2022-02-09 18:11:18,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-09 18:11:18,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:18,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:19,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:19,114 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-09 18:11:19,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:19,116 INFO L85 PathProgramCache]: Analyzing trace with hash 70916483, now seen corresponding path program 1 times [2022-02-09 18:11:19,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:19,117 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112435299] [2022-02-09 18:11:19,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:19,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 18:11:19,129 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-09 18:11:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 18:11:19,152 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-09 18:11:19,152 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-09 18:11:19,152 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 4 remaining) [2022-02-09 18:11:19,153 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 4 remaining) [2022-02-09 18:11:19,153 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 4 remaining) [2022-02-09 18:11:19,153 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 4 remaining) [2022-02-09 18:11:19,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-09 18:11:19,154 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-02-09 18:11:19,154 WARN L235 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-02-09 18:11:19,154 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-02-09 18:11:19,157 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:19,157 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:19,157 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:19,157 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:19,158 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:19,158 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:19,158 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:19,158 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:19,158 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:19,158 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:19,159 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:19,159 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:19,160 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-09 18:11:19,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-09 18:11:19,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:19,166 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-09 18:11:19,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2022-02-09 18:11:19,168 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 18:11:19,169 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-09 18:11:19,169 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-02-09 18:11:19,170 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 20 transitions, 61 flow [2022-02-09 18:11:19,228 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 579 states, 560 states have (on average 3.1285714285714286) internal successors, (1752), 578 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:19,230 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 10 transitions and produced 11 states. [2022-02-09 18:11:19,231 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-09 18:11:19,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:19,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1346657052, now seen corresponding path program 1 times [2022-02-09 18:11:19,231 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:19,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562696504] [2022-02-09 18:11:19,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:19,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:19,265 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:19,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562696504] [2022-02-09 18:11:19,265 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562696504] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:19,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662601233] [2022-02-09 18:11:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:19,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:19,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:19,267 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:19,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-09 18:11:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:19,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-09 18:11:19,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:19,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:19,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:19,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:19,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662601233] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:19,393 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:19,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-02-09 18:11:19,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219932503] [2022-02-09 18:11:19,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:19,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-09 18:11:19,393 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:19,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-09 18:11:19,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-09 18:11:19,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:19,394 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:19,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:19,394 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:19,460 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 24 transitions and produced 24 states. [2022-02-09 18:11:19,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-09 18:11:19,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:19,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:19,695 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-09 18:11:19,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:19,695 INFO L85 PathProgramCache]: Analyzing trace with hash -855694180, now seen corresponding path program 1 times [2022-02-09 18:11:19,695 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:19,695 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212725557] [2022-02-09 18:11:19,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:19,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 18:11:19,734 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:19,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212725557] [2022-02-09 18:11:19,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212725557] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:19,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427236092] [2022-02-09 18:11:19,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:19,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:19,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:19,736 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:19,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-09 18:11:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:19,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-09 18:11:19,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:19,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:19,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 18:11:19,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427236092] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:19,933 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:19,933 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 13 [2022-02-09 18:11:19,934 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763093315] [2022-02-09 18:11:19,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:19,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-09 18:11:19,934 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:19,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-09 18:11:19,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-02-09 18:11:19,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:19,935 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:19,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:19,935 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-02-09 18:11:19,935 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:20,086 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 38 transitions and produced 37 states. [2022-02-09 18:11:20,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-09 18:11:20,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-09 18:11:20,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:20,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-02-09 18:11:20,292 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-09 18:11:20,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:20,293 INFO L85 PathProgramCache]: Analyzing trace with hash -745006231, now seen corresponding path program 1 times [2022-02-09 18:11:20,293 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:20,293 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861337525] [2022-02-09 18:11:20,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:20,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:20,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-09 18:11:20,335 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:20,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861337525] [2022-02-09 18:11:20,336 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861337525] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:20,336 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890557460] [2022-02-09 18:11:20,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:20,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:20,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:20,337 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:20,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-09 18:11:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:20,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 18:11:20,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:20,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-09 18:11:20,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890557460] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:20,533 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:20,533 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 15 [2022-02-09 18:11:20,533 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436420666] [2022-02-09 18:11:20,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:20,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-09 18:11:20,534 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:20,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-09 18:11:20,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-02-09 18:11:20,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:20,534 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:20,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:20,535 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-02-09 18:11:20,535 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-02-09 18:11:20,535 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:20,639 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 45 transitions and produced 43 states. [2022-02-09 18:11:20,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-09 18:11:20,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-09 18:11:20,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-09 18:11:20,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:20,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:20,853 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-09 18:11:20,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:20,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1620295046, now seen corresponding path program 1 times [2022-02-09 18:11:20,855 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:20,855 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463486728] [2022-02-09 18:11:20,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:20,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 18:11:20,861 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-09 18:11:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 18:11:20,872 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-09 18:11:20,872 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-09 18:11:20,872 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 5 remaining) [2022-02-09 18:11:20,872 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (3 of 5 remaining) [2022-02-09 18:11:20,873 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 5 remaining) [2022-02-09 18:11:20,873 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 5 remaining) [2022-02-09 18:11:20,873 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 5 remaining) [2022-02-09 18:11:20,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-09 18:11:20,882 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-02-09 18:11:20,883 WARN L235 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-02-09 18:11:20,883 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-02-09 18:11:20,890 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:20,890 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:20,890 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:20,891 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:20,898 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:20,903 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:20,904 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:20,904 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:20,905 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:20,906 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:20,906 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:20,906 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:20,907 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:20,908 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:20,908 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:20,908 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:20,909 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-09 18:11:20,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-09 18:11:20,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:20,914 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-09 18:11:20,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (11)] Waiting until timeout for monitored process [2022-02-09 18:11:20,918 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 18:11:20,918 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-09 18:11:20,919 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-02-09 18:11:20,919 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 25 transitions, 82 flow [2022-02-09 18:11:21,041 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2938 states, 2896 states have (on average 3.883632596685083) internal successors, (11247), 2937 states have internal predecessors, (11247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:21,042 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 10 transitions and produced 11 states. [2022-02-09 18:11:21,043 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-02-09 18:11:21,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:21,043 INFO L85 PathProgramCache]: Analyzing trace with hash 109378849, now seen corresponding path program 1 times [2022-02-09 18:11:21,043 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:21,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146682297] [2022-02-09 18:11:21,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:21,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:21,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:21,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146682297] [2022-02-09 18:11:21,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146682297] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:21,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256745675] [2022-02-09 18:11:21,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:21,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:21,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:21,082 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:21,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-09 18:11:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:21,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-09 18:11:21,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:21,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:21,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256745675] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:21,178 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:21,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-02-09 18:11:21,178 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175258103] [2022-02-09 18:11:21,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:21,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-09 18:11:21,179 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:21,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-09 18:11:21,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-09 18:11:21,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:21,179 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:21,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:21,179 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:21,228 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 24 transitions and produced 24 states. [2022-02-09 18:11:21,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-09 18:11:21,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:21,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-02-09 18:11:21,444 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-02-09 18:11:21,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:21,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1082400608, now seen corresponding path program 1 times [2022-02-09 18:11:21,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:21,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655418218] [2022-02-09 18:11:21,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:21,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 18:11:21,474 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:21,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655418218] [2022-02-09 18:11:21,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655418218] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:21,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527469713] [2022-02-09 18:11:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:21,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:21,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:21,475 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:21,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-09 18:11:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:21,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-09 18:11:21,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:21,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:21,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 18:11:21,637 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527469713] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:21,637 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:21,637 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 13 [2022-02-09 18:11:21,637 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609286602] [2022-02-09 18:11:21,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:21,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-09 18:11:21,638 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:21,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-09 18:11:21,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-02-09 18:11:21,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:21,638 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:21,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:21,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-02-09 18:11:21,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:21,799 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 38 transitions and produced 37 states. [2022-02-09 18:11:21,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-09 18:11:21,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-09 18:11:21,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:22,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-02-09 18:11:22,017 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-02-09 18:11:22,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:22,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2109625982, now seen corresponding path program 1 times [2022-02-09 18:11:22,018 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:22,018 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619158747] [2022-02-09 18:11:22,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:22,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:22,053 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-09 18:11:22,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:22,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619158747] [2022-02-09 18:11:22,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619158747] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:22,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828680811] [2022-02-09 18:11:22,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:22,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:22,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:22,055 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:22,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-09 18:11:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:22,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 18:11:22,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:22,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:22,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-09 18:11:22,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828680811] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:22,252 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:22,252 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 15 [2022-02-09 18:11:22,252 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314340457] [2022-02-09 18:11:22,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:22,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-09 18:11:22,252 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:22,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-09 18:11:22,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-02-09 18:11:22,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:22,253 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:22,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:22,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-02-09 18:11:22,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-02-09 18:11:22,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:22,430 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 52 transitions and produced 50 states. [2022-02-09 18:11:22,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:22,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 18:11:22,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 18:11:22,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:22,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-02-09 18:11:22,634 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-02-09 18:11:22,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:22,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1132762153, now seen corresponding path program 1 times [2022-02-09 18:11:22,635 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:22,635 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518204596] [2022-02-09 18:11:22,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:22,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:22,693 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-09 18:11:22,694 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:22,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518204596] [2022-02-09 18:11:22,694 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518204596] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:22,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681783587] [2022-02-09 18:11:22,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:22,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:22,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:22,704 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:22,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-09 18:11:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:22,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-09 18:11:22,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:22,855 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:22,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:22,909 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-09 18:11:22,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681783587] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:22,910 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:22,910 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 5] total 18 [2022-02-09 18:11:22,910 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291177165] [2022-02-09 18:11:22,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:22,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-09 18:11:22,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:22,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-09 18:11:22,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-02-09 18:11:22,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:22,913 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:22,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 19 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) [2022-02-09 18:11:22,913 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:22,913 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-02-09 18:11:22,913 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-02-09 18:11:22,913 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:23,094 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 59 transitions and produced 56 states. [2022-02-09 18:11:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 18:11:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 18:11:23,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 18:11:23,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-02-09 18:11:23,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:23,315 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-02-09 18:11:23,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:23,315 INFO L85 PathProgramCache]: Analyzing trace with hash 756307531, now seen corresponding path program 1 times [2022-02-09 18:11:23,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:23,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182365779] [2022-02-09 18:11:23,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:23,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 18:11:23,323 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-09 18:11:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 18:11:23,328 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-09 18:11:23,328 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-09 18:11:23,328 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (5 of 6 remaining) [2022-02-09 18:11:23,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (4 of 6 remaining) [2022-02-09 18:11:23,328 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (3 of 6 remaining) [2022-02-09 18:11:23,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 6 remaining) [2022-02-09 18:11:23,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 6 remaining) [2022-02-09 18:11:23,329 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 6 remaining) [2022-02-09 18:11:23,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-09 18:11:23,329 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-02-09 18:11:23,329 WARN L235 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-02-09 18:11:23,330 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-02-09 18:11:23,345 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,345 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,345 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,345 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,345 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,346 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,346 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,346 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,346 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,346 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,346 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,346 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,346 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,347 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,347 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,347 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,347 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,347 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,347 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,347 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:23,348 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-09 18:11:23,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-09 18:11:23,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:23,350 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-09 18:11:23,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (16)] Waiting until timeout for monitored process [2022-02-09 18:11:23,353 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 18:11:23,353 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-09 18:11:23,353 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-02-09 18:11:23,354 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 30 transitions, 105 flow [2022-02-09 18:11:23,880 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 14781 states, 14692 states have (on average 4.657636809147836) internal successors, (68430), 14780 states have internal predecessors, (68430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:23,881 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 10 transitions and produced 11 states. [2022-02-09 18:11:23,881 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 3 more)] === [2022-02-09 18:11:23,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:23,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1855883139, now seen corresponding path program 1 times [2022-02-09 18:11:23,882 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:23,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933726962] [2022-02-09 18:11:23,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:23,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:23,913 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:23,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933726962] [2022-02-09 18:11:23,914 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933726962] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:23,914 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393638262] [2022-02-09 18:11:23,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:23,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:23,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:23,928 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:23,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-09 18:11:23,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:23,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-09 18:11:23,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:23,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:24,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:24,076 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393638262] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:24,076 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:24,076 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-02-09 18:11:24,076 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638127465] [2022-02-09 18:11:24,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:24,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-09 18:11:24,076 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:24,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-09 18:11:24,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-09 18:11:24,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:24,078 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:24,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:24,078 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:24,123 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 24 transitions and produced 24 states. [2022-02-09 18:11:24,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-09 18:11:24,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:24,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-02-09 18:11:24,343 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 3 more)] === [2022-02-09 18:11:24,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:24,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2039200540, now seen corresponding path program 1 times [2022-02-09 18:11:24,343 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:24,343 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613330002] [2022-02-09 18:11:24,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:24,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:24,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 18:11:24,380 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:24,380 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613330002] [2022-02-09 18:11:24,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613330002] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:24,380 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472896912] [2022-02-09 18:11:24,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:24,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:24,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:24,381 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:24,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-09 18:11:24,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:24,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-09 18:11:24,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:24,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:24,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:24,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 18:11:24,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472896912] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:24,510 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:24,510 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 13 [2022-02-09 18:11:24,510 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791951975] [2022-02-09 18:11:24,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:24,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-09 18:11:24,510 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:24,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-09 18:11:24,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-02-09 18:11:24,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:24,511 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:24,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:24,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-02-09 18:11:24,511 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:24,628 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 38 transitions and produced 37 states. [2022-02-09 18:11:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-09 18:11:24,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-09 18:11:24,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-02-09 18:11:24,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-02-09 18:11:24,848 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 3 more)] === [2022-02-09 18:11:24,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:24,848 INFO L85 PathProgramCache]: Analyzing trace with hash -725252192, now seen corresponding path program 1 times [2022-02-09 18:11:24,849 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:24,849 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501776199] [2022-02-09 18:11:24,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:24,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:24,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-09 18:11:24,879 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:24,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501776199] [2022-02-09 18:11:24,880 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501776199] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:24,880 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492703468] [2022-02-09 18:11:24,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:24,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:24,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:24,896 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:24,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-09 18:11:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:24,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 18:11:24,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:25,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-09 18:11:25,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492703468] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:25,056 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:25,056 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 15 [2022-02-09 18:11:25,057 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801011310] [2022-02-09 18:11:25,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:25,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-09 18:11:25,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:25,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-09 18:11:25,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-02-09 18:11:25,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:25,058 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:25,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:25,058 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-02-09 18:11:25,058 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-02-09 18:11:25,058 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:25,230 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 52 transitions and produced 50 states. [2022-02-09 18:11:25,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:25,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 18:11:25,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 18:11:25,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:25,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-02-09 18:11:25,431 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 3 more)] === [2022-02-09 18:11:25,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:25,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1364158049, now seen corresponding path program 1 times [2022-02-09 18:11:25,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:25,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237372082] [2022-02-09 18:11:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:25,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:25,461 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-09 18:11:25,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:25,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237372082] [2022-02-09 18:11:25,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237372082] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:25,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351860069] [2022-02-09 18:11:25,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:25,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:25,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:25,463 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:25,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-09 18:11:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:25,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-09 18:11:25,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:25,672 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:25,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:25,733 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-09 18:11:25,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351860069] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:25,733 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:25,733 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 5] total 18 [2022-02-09 18:11:25,734 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39697545] [2022-02-09 18:11:25,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:25,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-09 18:11:25,734 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:25,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-09 18:11:25,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-02-09 18:11:25,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:25,736 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:25,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 19 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) [2022-02-09 18:11:25,736 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:25,736 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-02-09 18:11:25,736 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-02-09 18:11:25,736 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:25,975 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 66 transitions and produced 63 states. [2022-02-09 18:11:25,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:25,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-09 18:11:25,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-09 18:11:25,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-09 18:11:25,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:26,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-02-09 18:11:26,186 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 3 more)] === [2022-02-09 18:11:26,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:26,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1632692679, now seen corresponding path program 1 times [2022-02-09 18:11:26,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:26,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009894240] [2022-02-09 18:11:26,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:26,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:26,222 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-09 18:11:26,222 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:26,222 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009894240] [2022-02-09 18:11:26,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009894240] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:26,222 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461565968] [2022-02-09 18:11:26,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:26,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:26,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:26,223 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:26,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-09 18:11:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:26,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 18:11:26,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:26,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:26,517 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-02-09 18:11:26,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461565968] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:26,518 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:26,518 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 5] total 20 [2022-02-09 18:11:26,518 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106617209] [2022-02-09 18:11:26,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:26,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-09 18:11:26,518 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:26,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-09 18:11:26,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-02-09 18:11:26,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:26,519 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:26,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 21 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) [2022-02-09 18:11:26,519 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:26,519 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-02-09 18:11:26,519 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2022-02-09 18:11:26,519 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-02-09 18:11:26,519 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:26,703 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 73 transitions and produced 69 states. [2022-02-09 18:11:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-09 18:11:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-09 18:11:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-09 18:11:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-09 18:11:26,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:26,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:26,904 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 3 more)] === [2022-02-09 18:11:26,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:26,904 INFO L85 PathProgramCache]: Analyzing trace with hash 926553693, now seen corresponding path program 1 times [2022-02-09 18:11:26,905 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:26,905 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035945385] [2022-02-09 18:11:26,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:26,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 18:11:26,910 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-09 18:11:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 18:11:26,914 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-09 18:11:26,914 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-09 18:11:26,914 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (6 of 7 remaining) [2022-02-09 18:11:26,914 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (5 of 7 remaining) [2022-02-09 18:11:26,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (4 of 7 remaining) [2022-02-09 18:11:26,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (3 of 7 remaining) [2022-02-09 18:11:26,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 7 remaining) [2022-02-09 18:11:26,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 7 remaining) [2022-02-09 18:11:26,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 7 remaining) [2022-02-09 18:11:26,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-09 18:11:26,916 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-02-09 18:11:26,916 WARN L235 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-02-09 18:11:26,916 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-02-09 18:11:26,919 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,919 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,920 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,920 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,920 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,920 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,920 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,920 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,920 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,920 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,920 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,920 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,921 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,921 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,921 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,921 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,921 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,921 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,921 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,921 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,921 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,921 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,921 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,922 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:26,922 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-09 18:11:26,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-09 18:11:26,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:26,930 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-09 18:11:26,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (22)] Waiting until timeout for monitored process [2022-02-09 18:11:26,933 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 18:11:26,933 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-09 18:11:26,933 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-02-09 18:11:26,934 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 35 transitions, 130 flow [2022-02-09 18:11:29,593 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 74092 states, 73908 states have (on average 5.4440250040591005) internal successors, (402357), 74091 states have internal predecessors, (402357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:29,594 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 10 transitions and produced 11 states. [2022-02-09 18:11:29,594 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 4 more)] === [2022-02-09 18:11:29,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:29,595 INFO L85 PathProgramCache]: Analyzing trace with hash -402110710, now seen corresponding path program 1 times [2022-02-09 18:11:29,595 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:29,595 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123678546] [2022-02-09 18:11:29,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:29,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:29,612 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:29,612 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123678546] [2022-02-09 18:11:29,612 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123678546] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:29,612 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983353361] [2022-02-09 18:11:29,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:29,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:29,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:29,614 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:29,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-09 18:11:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:29,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-09 18:11:29,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:29,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:29,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:29,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983353361] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:29,712 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:29,712 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-02-09 18:11:29,713 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521268947] [2022-02-09 18:11:29,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:29,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-09 18:11:29,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:29,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-09 18:11:29,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-09 18:11:29,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:29,713 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:29,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:29,714 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:29,762 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 24 transitions and produced 24 states. [2022-02-09 18:11:29,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-09 18:11:29,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:29,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:29,972 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 4 more)] === [2022-02-09 18:11:29,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:29,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2054531472, now seen corresponding path program 1 times [2022-02-09 18:11:29,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:29,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156895953] [2022-02-09 18:11:29,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:30,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:30,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 18:11:30,168 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:30,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156895953] [2022-02-09 18:11:30,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156895953] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:30,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050054202] [2022-02-09 18:11:30,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:30,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:30,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:30,180 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:30,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-09 18:11:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:30,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-09 18:11:30,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:30,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:30,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 18:11:30,329 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050054202] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:30,329 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:30,329 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 13 [2022-02-09 18:11:30,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720355027] [2022-02-09 18:11:30,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:30,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-09 18:11:30,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:30,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-09 18:11:30,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-02-09 18:11:30,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:30,331 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:30,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:30,331 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-02-09 18:11:30,331 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:30,471 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 38 transitions and produced 37 states. [2022-02-09 18:11:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-09 18:11:30,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-09 18:11:30,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:30,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:30,706 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 4 more)] === [2022-02-09 18:11:30,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:30,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1153669715, now seen corresponding path program 1 times [2022-02-09 18:11:30,706 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:30,706 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513215364] [2022-02-09 18:11:30,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:30,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-09 18:11:30,743 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:30,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513215364] [2022-02-09 18:11:30,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513215364] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:30,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190295603] [2022-02-09 18:11:30,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:30,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:30,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:30,745 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:30,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-09 18:11:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:30,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 18:11:30,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:30,877 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:30,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:30,927 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-09 18:11:30,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190295603] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:30,928 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:30,928 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 15 [2022-02-09 18:11:30,928 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405744751] [2022-02-09 18:11:30,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:30,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-09 18:11:30,928 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:30,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-09 18:11:30,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-02-09 18:11:30,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:30,929 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:30,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:30,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-02-09 18:11:30,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-02-09 18:11:30,929 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:31,097 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 52 transitions and produced 50 states. [2022-02-09 18:11:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 18:11:31,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 18:11:31,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:31,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:31,298 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 4 more)] === [2022-02-09 18:11:31,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:31,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2071026809, now seen corresponding path program 1 times [2022-02-09 18:11:31,299 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:31,299 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426504849] [2022-02-09 18:11:31,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:31,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:31,330 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-09 18:11:31,330 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:31,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426504849] [2022-02-09 18:11:31,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426504849] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:31,331 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818039419] [2022-02-09 18:11:31,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:31,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:31,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:31,332 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:31,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-09 18:11:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:31,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-09 18:11:31,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:31,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:31,571 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-09 18:11:31,572 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818039419] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:31,572 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:31,572 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 5] total 18 [2022-02-09 18:11:31,572 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653134979] [2022-02-09 18:11:31,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:31,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-09 18:11:31,572 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:31,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-09 18:11:31,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-02-09 18:11:31,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:31,573 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:31,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 19 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) [2022-02-09 18:11:31,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:31,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-02-09 18:11:31,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-02-09 18:11:31,573 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:31,812 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 66 transitions and produced 63 states. [2022-02-09 18:11:31,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:31,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-09 18:11:31,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-09 18:11:31,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-09 18:11:31,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:32,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-02-09 18:11:32,013 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 4 more)] === [2022-02-09 18:11:32,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:32,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1433914896, now seen corresponding path program 1 times [2022-02-09 18:11:32,013 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:32,013 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178709887] [2022-02-09 18:11:32,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:32,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-09 18:11:32,050 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:32,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178709887] [2022-02-09 18:11:32,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178709887] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:32,052 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813273372] [2022-02-09 18:11:32,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:32,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:32,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:32,053 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:32,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-09 18:11:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:32,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 18:11:32,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:32,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:32,432 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-02-09 18:11:32,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813273372] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:32,433 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:32,433 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 5] total 20 [2022-02-09 18:11:32,433 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245558012] [2022-02-09 18:11:32,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:32,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-09 18:11:32,433 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:32,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-09 18:11:32,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-02-09 18:11:32,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:32,434 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:32,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 21 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) [2022-02-09 18:11:32,434 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:32,434 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-02-09 18:11:32,434 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2022-02-09 18:11:32,434 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-02-09 18:11:32,434 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:32,797 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 80 transitions and produced 76 states. [2022-02-09 18:11:32,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:32,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-09 18:11:32,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-09 18:11:32,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-09 18:11:32,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-09 18:11:32,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:32,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-02-09 18:11:32,999 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 4 more)] === [2022-02-09 18:11:32,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:32,999 INFO L85 PathProgramCache]: Analyzing trace with hash -476889262, now seen corresponding path program 1 times [2022-02-09 18:11:32,999 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:32,999 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065748358] [2022-02-09 18:11:32,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:32,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-02-09 18:11:33,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:33,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065748358] [2022-02-09 18:11:33,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065748358] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:33,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400271510] [2022-02-09 18:11:33,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:33,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:33,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:33,068 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:33,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-09 18:11:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:33,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-09 18:11:33,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:33,422 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:33,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:33,506 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-02-09 18:11:33,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400271510] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:33,507 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:33,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 5] total 22 [2022-02-09 18:11:33,507 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291749062] [2022-02-09 18:11:33,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:33,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-09 18:11:33,507 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:33,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-09 18:11:33,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-02-09 18:11:33,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:33,509 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:33,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.772727272727273) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:33,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:33,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-02-09 18:11:33,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-02-09 18:11:33,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-02-09 18:11:33,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2022-02-09 18:11:33,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:33,777 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 87 transitions and produced 82 states. [2022-02-09 18:11:33,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:33,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-09 18:11:33,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-09 18:11:33,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-09 18:11:33,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-09 18:11:33,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-09 18:11:33,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:33,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-02-09 18:11:33,980 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 4 more)] === [2022-02-09 18:11:33,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:33,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1898603497, now seen corresponding path program 1 times [2022-02-09 18:11:33,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:33,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657246742] [2022-02-09 18:11:33,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:33,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 18:11:33,985 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-09 18:11:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 18:11:33,990 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-09 18:11:33,990 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-09 18:11:33,990 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (7 of 8 remaining) [2022-02-09 18:11:33,990 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (6 of 8 remaining) [2022-02-09 18:11:33,990 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (5 of 8 remaining) [2022-02-09 18:11:33,991 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (4 of 8 remaining) [2022-02-09 18:11:33,991 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (3 of 8 remaining) [2022-02-09 18:11:33,991 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 8 remaining) [2022-02-09 18:11:33,991 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 8 remaining) [2022-02-09 18:11:34,005 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 8 remaining) [2022-02-09 18:11:34,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-09 18:11:34,006 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-02-09 18:11:34,006 WARN L235 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2022-02-09 18:11:34,006 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2022-02-09 18:11:34,011 WARN L322 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,012 WARN L322 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,012 WARN L322 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,012 WARN L322 ript$VariableManager]: TermVariabe threadThread5of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,012 WARN L322 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,012 WARN L322 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,012 WARN L322 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,012 WARN L322 ript$VariableManager]: TermVariabe threadThread1of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,012 WARN L322 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,012 WARN L322 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,013 WARN L322 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,013 WARN L322 ript$VariableManager]: TermVariabe threadThread7of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,013 WARN L322 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,013 WARN L322 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,013 WARN L322 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,013 WARN L322 ript$VariableManager]: TermVariabe threadThread3of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,013 WARN L322 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,013 WARN L322 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,013 WARN L322 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,014 WARN L322 ript$VariableManager]: TermVariabe threadThread6of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,014 WARN L322 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,014 WARN L322 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,014 WARN L322 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,014 WARN L322 ript$VariableManager]: TermVariabe threadThread4of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,014 WARN L322 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,014 WARN L322 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,014 WARN L322 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,014 WARN L322 ript$VariableManager]: TermVariabe threadThread2of7ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:34,015 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-09 18:11:34,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-09 18:11:34,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:34,036 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-09 18:11:34,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (29)] Waiting until timeout for monitored process [2022-02-09 18:11:34,039 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 18:11:34,039 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-09 18:11:34,039 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-02-09 18:11:34,040 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 40 transitions, 157 flow [2022-02-09 18:11:50,504 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 370839 states, 370464 states have (on average 6.237334801762114) internal successors, (2310708), 370838 states have internal predecessors, (2310708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:50,505 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 10 transitions and produced 11 states. [2022-02-09 18:11:50,506 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 5 more)] === [2022-02-09 18:11:50,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:50,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1925329974, now seen corresponding path program 1 times [2022-02-09 18:11:50,506 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:50,506 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013370955] [2022-02-09 18:11:50,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:50,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:50,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:50,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:50,535 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:50,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013370955] [2022-02-09 18:11:50,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013370955] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:50,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370764514] [2022-02-09 18:11:50,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:50,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:50,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:50,568 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:50,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-09 18:11:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:50,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-09 18:11:50,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:50,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:50,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:50,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370764514] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:50,699 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:50,699 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-02-09 18:11:50,699 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961384723] [2022-02-09 18:11:50,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:50,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-09 18:11:50,700 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:50,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-09 18:11:50,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-02-09 18:11:50,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:50,701 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:50,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:50,701 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:50,754 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 24 transitions and produced 24 states. [2022-02-09 18:11:50,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-02-09 18:11:50,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:50,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-09 18:11:50,978 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 5 more)] === [2022-02-09 18:11:50,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:50,978 INFO L85 PathProgramCache]: Analyzing trace with hash -144105568, now seen corresponding path program 1 times [2022-02-09 18:11:50,978 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:50,978 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631814222] [2022-02-09 18:11:50,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:50,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:51,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 18:11:51,020 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:51,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631814222] [2022-02-09 18:11:51,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631814222] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:51,020 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162563864] [2022-02-09 18:11:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:51,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:51,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:51,022 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:51,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-09 18:11:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:51,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-09 18:11:51,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:51,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:51,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-09 18:11:51,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162563864] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:51,183 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:51,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 13 [2022-02-09 18:11:51,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926597427] [2022-02-09 18:11:51,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:51,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-09 18:11:51,184 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:51,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-09 18:11:51,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-02-09 18:11:51,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:51,185 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:51,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 14 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:51,185 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-02-09 18:11:51,185 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:51,322 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 38 transitions and produced 37 states. [2022-02-09 18:11:51,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-09 18:11:51,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-09 18:11:51,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:51,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-02-09 18:11:51,523 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 5 more)] === [2022-02-09 18:11:51,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:51,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1071930851, now seen corresponding path program 1 times [2022-02-09 18:11:51,525 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:51,525 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965859836] [2022-02-09 18:11:51,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:51,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:51,563 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-09 18:11:51,564 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:51,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965859836] [2022-02-09 18:11:51,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965859836] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:51,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043647847] [2022-02-09 18:11:51,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:51,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:51,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:51,580 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:51,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-09 18:11:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:51,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-09 18:11:51,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:53,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:53,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-09 18:11:53,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043647847] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:53,214 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:53,214 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 15 [2022-02-09 18:11:53,214 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932692359] [2022-02-09 18:11:53,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:53,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-09 18:11:53,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:53,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-09 18:11:53,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-02-09 18:11:53,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:53,215 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:53,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:53,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2022-02-09 18:11:53,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2022-02-09 18:11:53,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:53,497 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 52 transitions and produced 50 states. [2022-02-09 18:11:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 18:11:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 18:11:53,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-02-09 18:11:53,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:53,698 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 5 more)] === [2022-02-09 18:11:53,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:53,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1821675405, now seen corresponding path program 1 times [2022-02-09 18:11:53,699 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:53,699 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720043937] [2022-02-09 18:11:53,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:53,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-09 18:11:53,731 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:53,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720043937] [2022-02-09 18:11:53,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720043937] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:53,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894842795] [2022-02-09 18:11:53,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:53,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:53,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:53,738 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:53,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-09 18:11:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:53,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-09 18:11:53,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:53,968 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:53,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-09 18:11:54,070 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894842795] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:54,070 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:54,070 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 5] total 18 [2022-02-09 18:11:54,070 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373570828] [2022-02-09 18:11:54,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:54,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-02-09 18:11:54,075 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:54,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-02-09 18:11:54,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-02-09 18:11:54,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:54,076 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:54,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 19 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) [2022-02-09 18:11:54,076 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:54,077 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-02-09 18:11:54,077 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2022-02-09 18:11:54,077 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:54,367 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 66 transitions and produced 63 states. [2022-02-09 18:11:54,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:54,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-09 18:11:54,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-02-09 18:11:54,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-09 18:11:54,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:54,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:54,569 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 5 more)] === [2022-02-09 18:11:54,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:54,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1400220644, now seen corresponding path program 1 times [2022-02-09 18:11:54,569 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:54,570 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557980766] [2022-02-09 18:11:54,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:54,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:54,628 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-02-09 18:11:54,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:54,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557980766] [2022-02-09 18:11:54,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557980766] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:54,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687050178] [2022-02-09 18:11:54,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:54,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:54,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:54,631 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:54,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-09 18:11:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:54,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2022-02-09 18:11:54,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:54,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-02-09 18:11:54,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687050178] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:54,978 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:54,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 5] total 20 [2022-02-09 18:11:54,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127319758] [2022-02-09 18:11:54,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:54,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-02-09 18:11:54,979 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:54,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-02-09 18:11:54,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-02-09 18:11:54,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:54,980 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:54,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.5) internal successors, (70), 21 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) [2022-02-09 18:11:54,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:54,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-02-09 18:11:54,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2022-02-09 18:11:54,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-02-09 18:11:54,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:55,487 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 80 transitions and produced 76 states. [2022-02-09 18:11:55,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:55,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-09 18:11:55,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-09 18:11:55,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-09 18:11:55,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-09 18:11:55,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:55,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-02-09 18:11:55,709 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 5 more)] === [2022-02-09 18:11:55,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:55,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1779083522, now seen corresponding path program 1 times [2022-02-09 18:11:55,710 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:55,710 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226486287] [2022-02-09 18:11:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:55,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:55,757 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-02-09 18:11:55,758 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:55,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226486287] [2022-02-09 18:11:55,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226486287] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:55,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841558914] [2022-02-09 18:11:55,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:55,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:55,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:55,760 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:55,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-09 18:11:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:55,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-09 18:11:55,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:56,110 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:56,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:56,225 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-02-09 18:11:56,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841558914] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:56,225 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:56,225 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 5] total 22 [2022-02-09 18:11:56,225 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897539389] [2022-02-09 18:11:56,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:56,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-02-09 18:11:56,226 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:56,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-02-09 18:11:56,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-02-09 18:11:56,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:56,227 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:56,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.772727272727273) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:56,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:56,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-02-09 18:11:56,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-02-09 18:11:56,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2022-02-09 18:11:56,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2022-02-09 18:11:56,227 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:56,655 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 94 transitions and produced 89 states. [2022-02-09 18:11:56,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:56,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-09 18:11:56,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-09 18:11:56,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-09 18:11:56,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-09 18:11:56,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-09 18:11:56,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:56,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:56,880 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 5 more)] === [2022-02-09 18:11:56,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:56,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2050644045, now seen corresponding path program 1 times [2022-02-09 18:11:56,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:56,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650150427] [2022-02-09 18:11:56,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:56,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:56,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:56,954 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-02-09 18:11:56,954 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 18:11:56,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650150427] [2022-02-09 18:11:56,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650150427] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-09 18:11:56,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370546793] [2022-02-09 18:11:56,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:56,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-09 18:11:56,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:56,956 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-09 18:11:56,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-09 18:11:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 18:11:56,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2022-02-09 18:11:56,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-09 18:11:57,248 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 18:11:57,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-09 18:11:57,325 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-02-09 18:11:57,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370546793] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-09 18:11:57,326 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-09 18:11:57,326 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 16, 5] total 24 [2022-02-09 18:11:57,326 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357190874] [2022-02-09 18:11:57,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-09 18:11:57,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-02-09 18:11:57,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 18:11:57,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-02-09 18:11:57,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2022-02-09 18:11:57,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:57,327 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-02-09 18:11:57,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.0) internal successors, (96), 25 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 18:11:57,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:57,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2022-02-09 18:11:57,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2022-02-09 18:11:57,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-02-09 18:11:57,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2022-02-09 18:11:57,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-02-09 18:11:57,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-02-09 18:11:57,631 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 101 transitions and produced 95 states. [2022-02-09 18:11:57,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-09 18:11:57,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-09 18:11:57,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-09 18:11:57,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-09 18:11:57,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-09 18:11:57,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-09 18:11:57,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-09 18:11:57,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-09 18:11:57,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-02-09 18:11:57,866 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 5 more)] === [2022-02-09 18:11:57,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 18:11:57,867 INFO L85 PathProgramCache]: Analyzing trace with hash -854243936, now seen corresponding path program 1 times [2022-02-09 18:11:57,867 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 18:11:57,867 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738904222] [2022-02-09 18:11:57,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 18:11:57,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 18:11:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 18:11:57,874 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-09 18:11:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-09 18:11:57,885 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-09 18:11:57,885 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-09 18:11:57,886 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (8 of 9 remaining) [2022-02-09 18:11:57,886 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (7 of 9 remaining) [2022-02-09 18:11:57,886 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (6 of 9 remaining) [2022-02-09 18:11:57,886 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (5 of 9 remaining) [2022-02-09 18:11:57,886 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (4 of 9 remaining) [2022-02-09 18:11:57,886 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (3 of 9 remaining) [2022-02-09 18:11:57,887 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 9 remaining) [2022-02-09 18:11:57,887 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 9 remaining) [2022-02-09 18:11:57,887 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 9 remaining) [2022-02-09 18:11:57,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-09 18:11:57,888 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 18:11:57,888 WARN L235 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2022-02-09 18:11:57,888 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2022-02-09 18:11:57,893 WARN L322 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,893 WARN L322 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,893 WARN L322 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,893 WARN L322 ript$VariableManager]: TermVariabe threadThread4of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,894 WARN L322 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,894 WARN L322 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,894 WARN L322 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,894 WARN L322 ript$VariableManager]: TermVariabe threadThread3of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,895 WARN L322 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,895 WARN L322 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,895 WARN L322 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,895 WARN L322 ript$VariableManager]: TermVariabe threadThread1of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,896 WARN L322 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,896 WARN L322 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,896 WARN L322 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,896 WARN L322 ript$VariableManager]: TermVariabe threadThread7of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,902 WARN L322 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,903 WARN L322 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,903 WARN L322 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,903 WARN L322 ript$VariableManager]: TermVariabe threadThread2of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,903 WARN L322 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,903 WARN L322 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,903 WARN L322 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,904 WARN L322 ript$VariableManager]: TermVariabe threadThread5of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,904 WARN L322 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,904 WARN L322 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,904 WARN L322 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,904 WARN L322 ript$VariableManager]: TermVariabe threadThread6of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,904 WARN L322 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,904 WARN L322 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,905 WARN L322 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,905 WARN L322 ript$VariableManager]: TermVariabe threadThread8of8ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-09 18:11:57,906 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-09 18:11:57,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-02-09 18:11:57,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 18:11:57,908 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-02-09 18:11:57,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (37)] Waiting until timeout for monitored process [2022-02-09 18:11:57,911 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 18:11:57,914 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-09 18:11:57,914 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-02-09 18:11:57,936 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 45 transitions, 186 flow