/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/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -i ../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/reorder_c11_good-20.line366.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-10-04 01:27:18,595 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-04 01:27:18,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-04 01:27:18,616 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-04 01:27:18,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-04 01:27:18,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-04 01:27:18,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-04 01:27:18,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-10-04 01:27:18,657 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-04 01:27:18,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-04 01:27:18,657 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-04 01:27:18,658 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-04 01:27:18,658 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-04 01:27:18,658 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-04 01:27:18,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-04 01:27:18,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-04 01:27:18,659 INFO L138 SettingsManager]: * Use SBE=true [2022-10-04 01:27:18,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-04 01:27:18,659 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-04 01:27:18,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-04 01:27:18,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-04 01:27:18,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-04 01:27:18,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-04 01:27:18,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-04 01:27:18,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-04 01:27:18,660 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-04 01:27:18,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-04 01:27:18,660 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-04 01:27:18,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-04 01:27:18,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-04 01:27:18,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-04 01:27:18,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-04 01:27:18,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-04 01:27:18,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-04 01:27:18,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-04 01:27:18,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-04 01:27:18,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-04 01:27:18,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-04 01:27:18,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-04 01:27:18,662 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-04 01:27:18,662 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-04 01:27:18,662 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-04 01:27:18,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-04 01:27:18,662 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-04 01:27:18,662 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-04 01:27:18,662 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-04 01:27:18,662 INFO L138 SettingsManager]: * Independence relation used for POR in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-04 01:27:18,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-04 01:27:18,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-04 01:27:18,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-04 01:27:18,880 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-04 01:27:18,881 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-04 01:27:18,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/reorder_c11_good-20.line366.bpl [2022-10-04 01:27:18,883 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/reorder_c11_good-20.line366.bpl' [2022-10-04 01:27:18,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-04 01:27:18,914 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-10-04 01:27:18,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-04 01:27:18,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-04 01:27:18,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-04 01:27:18,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 01:27:18" (1/1) ... [2022-10-04 01:27:18,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 01:27:18" (1/1) ... [2022-10-04 01:27:18,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 01:27:18" (1/1) ... [2022-10-04 01:27:18,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 01:27:18" (1/1) ... [2022-10-04 01:27:18,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 01:27:18" (1/1) ... [2022-10-04 01:27:18,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 01:27:18" (1/1) ... [2022-10-04 01:27:18,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 01:27:18" (1/1) ... [2022-10-04 01:27:18,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-04 01:27:18,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-04 01:27:18,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-04 01:27:18,970 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-04 01:27:18,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 01:27:18" (1/1) ... [2022-10-04 01:27:18,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-04 01:27:18,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 01:27:19,001 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) [2022-10-04 01:27:19,007 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 [2022-10-04 01:27:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-10-04 01:27:19,043 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-10-04 01:27:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-10-04 01:27:19,043 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-10-04 01:27:19,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-04 01:27:19,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-04 01:27:19,044 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-04 01:27:19,123 INFO L234 CfgBuilder]: Building ICFG [2022-10-04 01:27:19,124 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-04 01:27:19,350 INFO L275 CfgBuilder]: Performing block encoding [2022-10-04 01:27:19,358 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-04 01:27:19,359 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-10-04 01:27:19,360 INFO L202 PluginConnector]: Adding new model reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 01:27:19 BoogieIcfgContainer [2022-10-04 01:27:19,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-04 01:27:19,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-04 01:27:19,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-04 01:27:19,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-04 01:27:19,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 01:27:18" (1/2) ... [2022-10-04 01:27:19,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@104e7472 and model type reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 01:27:19, skipping insertion in model container [2022-10-04 01:27:19,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 01:27:19" (2/2) ... [2022-10-04 01:27:19,367 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_good-20.line366.bpl [2022-10-04 01:27:19,373 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-04 01:27:19,379 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-04 01:27:19,379 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-04 01:27:19,379 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-04 01:27:19,419 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-10-04 01:27:19,450 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 01:27:19,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 01:27:19,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 01:27:19,458 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) [2022-10-04 01:27:19,459 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 [2022-10-04 01:27:19,481 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 01:27:19,487 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-04 01:27:19,494 INFO L357 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, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@47d027af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 01:27:19,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 01:27:19,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 01:27:19,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 01:27:19,552 INFO L85 PathProgramCache]: Analyzing trace with hash -7742114, now seen corresponding path program 1 times [2022-10-04 01:27:19,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 01:27:19,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283753170] [2022-10-04 01:27:19,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:19,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 01:27:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 01:27:19,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 01:27:19,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283753170] [2022-10-04 01:27:19,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283753170] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 01:27:19,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 01:27:19,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-04 01:27:19,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486527079] [2022-10-04 01:27:19,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 01:27:19,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-04 01:27:19,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 01:27:19,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-04 01:27:19,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-04 01:27:19,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:19,789 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 01:27:19,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-04 01:27:19,789 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:19,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:19,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-04 01:27:19,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 01:27:19,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 01:27:19,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1815196577, now seen corresponding path program 1 times [2022-10-04 01:27:19,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 01:27:19,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314796751] [2022-10-04 01:27:19,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:19,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 01:27:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 01:27:19,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 01:27:19,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314796751] [2022-10-04 01:27:19,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314796751] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 01:27:19,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 01:27:19,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-04 01:27:19,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424491464] [2022-10-04 01:27:19,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 01:27:19,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-04 01:27:19,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 01:27:19,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-04 01:27:19,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-04 01:27:19,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:19,928 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 01:27:19,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-04 01:27:19,928 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:19,928 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:20,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:20,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 01:27:20,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-04 01:27:20,023 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 01:27:20,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 01:27:20,024 INFO L85 PathProgramCache]: Analyzing trace with hash -824676924, now seen corresponding path program 1 times [2022-10-04 01:27:20,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 01:27:20,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123101072] [2022-10-04 01:27:20,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:20,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 01:27:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 01:27:20,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 01:27:20,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123101072] [2022-10-04 01:27:20,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123101072] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-04 01:27:20,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107977294] [2022-10-04 01:27:20,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:20,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 01:27:20,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 01:27:20,114 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) [2022-10-04 01:27:20,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-04 01:27:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:20,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-04 01:27:20,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-04 01:27:20,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 01:27:20,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-04 01:27:20,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 01:27:20,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107977294] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-04 01:27:20,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-04 01:27:20,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-10-04 01:27:20,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000418334] [2022-10-04 01:27:20,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-04 01:27:20,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-04 01:27:20,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 01:27:20,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-04 01:27:20,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-10-04 01:27:20,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:20,314 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 01:27:20,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-04 01:27:20,315 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:20,315 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 01:27:20,315 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:20,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:20,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 01:27:20,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-04 01:27:20,472 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-04 01:27:20,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-04 01:27:20,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-10-04 01:27:20,687 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-04 01:27:20,689 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-10-04 01:27:20,695 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 01:27:20,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 01:27:20,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 01:27:20,699 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) [2022-10-04 01:27:20,707 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 01:27:20,708 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-04 01:27:20,708 INFO L357 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, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@47d027af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 01:27:20,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 01:27:20,711 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 [2022-10-04 01:27:20,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-04 01:27:20,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 01:27:20,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1954159037, now seen corresponding path program 1 times [2022-10-04 01:27:20,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 01:27:20,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043502108] [2022-10-04 01:27:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:20,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 01:27:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:20,822 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-04 01:27:20,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 01:27:20,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043502108] [2022-10-04 01:27:20,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043502108] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 01:27:20,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 01:27:20,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-04 01:27:20,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357715479] [2022-10-04 01:27:20,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 01:27:20,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-04 01:27:20,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 01:27:20,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-04 01:27:20,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-04 01:27:20,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:20,824 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 01:27:20,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-04 01:27:20,825 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:20,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:20,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-04 01:27:20,829 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-04 01:27:20,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 01:27:20,829 INFO L85 PathProgramCache]: Analyzing trace with hash -229517890, now seen corresponding path program 1 times [2022-10-04 01:27:20,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 01:27:20,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718742548] [2022-10-04 01:27:20,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:20,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 01:27:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:20,882 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-04 01:27:20,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 01:27:20,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718742548] [2022-10-04 01:27:20,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718742548] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 01:27:20,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 01:27:20,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-04 01:27:20,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570512415] [2022-10-04 01:27:20,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 01:27:20,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-04 01:27:20,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 01:27:20,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-04 01:27:20,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-04 01:27:20,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:20,885 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 01:27:20,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-04 01:27:20,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:20,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:20,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:20,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 01:27:20,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-04 01:27:20,913 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-04 01:27:20,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 01:27:20,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1873323997, now seen corresponding path program 1 times [2022-10-04 01:27:20,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 01:27:20,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305031953] [2022-10-04 01:27:20,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:20,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 01:27:20,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-04 01:27:20,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 01:27:20,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305031953] [2022-10-04 01:27:20,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305031953] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-04 01:27:20,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874835004] [2022-10-04 01:27:20,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:20,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 01:27:20,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 01:27:21,009 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) [2022-10-04 01:27:21,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-04 01:27:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:21,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-04 01:27:21,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-04 01:27:21,151 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-04 01:27:21,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-04 01:27:21,197 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-04 01:27:21,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874835004] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-04 01:27:21,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-04 01:27:21,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-10-04 01:27:21,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146198273] [2022-10-04 01:27:21,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-04 01:27:21,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-04 01:27:21,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 01:27:21,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-04 01:27:21,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-10-04 01:27:21,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:21,201 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 01:27:21,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-04 01:27:21,201 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:21,201 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 01:27:21,202 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:21,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:21,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 01:27:21,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-04 01:27:21,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-04 01:27:21,301 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-10-04 01:27:21,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 01:27:21,490 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-04 01:27:21,490 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/3) [2022-10-04 01:27:21,493 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 01:27:21,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 01:27:21,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 01:27:21,494 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-04 01:27:21,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (6)] Waiting until timeout for monitored process [2022-10-04 01:27:21,499 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 01:27:21,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-04 01:27:21,500 INFO L357 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, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@47d027af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 01:27:21,500 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 01:27:21,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-04 01:27:21,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 01:27:21,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1650828534, now seen corresponding path program 1 times [2022-10-04 01:27:21,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 01:27:21,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231315803] [2022-10-04 01:27:21,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:21,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 01:27:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-04 01:27:21,594 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-04 01:27:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-04 01:27:21,652 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-04 01:27:21,652 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-04 01:27:21,653 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-04 01:27:21,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-04 01:27:21,654 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-04 01:27:21,655 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (3/3) [2022-10-04 01:27:21,656 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-04 01:27:21,657 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-10-04 01:27:21,690 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-10-04 01:27:21,695 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 01:27:21,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 01:27:21,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 01:27:21,716 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) [2022-10-04 01:27:21,717 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 [2022-10-04 01:27:21,734 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 01:27:21,735 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-04 01:27:21,735 INFO L357 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, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@47d027af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 01:27:21,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 01:27:21,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 01:27:21,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 01:27:21,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1427642846, now seen corresponding path program 1 times [2022-10-04 01:27:21,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 01:27:21,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31259490] [2022-10-04 01:27:21,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:21,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 01:27:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:21,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 01:27:21,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 01:27:21,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31259490] [2022-10-04 01:27:21,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31259490] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 01:27:21,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 01:27:21,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-04 01:27:21,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454476291] [2022-10-04 01:27:21,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 01:27:21,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-04 01:27:21,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 01:27:21,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-04 01:27:21,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-04 01:27:21,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:21,774 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 01:27:21,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-04 01:27:21,774 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:21,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:21,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-04 01:27:21,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 01:27:21,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 01:27:21,776 INFO L85 PathProgramCache]: Analyzing trace with hash -379811617, now seen corresponding path program 1 times [2022-10-04 01:27:21,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 01:27:21,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655787030] [2022-10-04 01:27:21,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:21,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 01:27:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:21,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 01:27:21,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 01:27:21,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655787030] [2022-10-04 01:27:21,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655787030] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 01:27:21,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 01:27:21,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-04 01:27:21,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326289845] [2022-10-04 01:27:21,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 01:27:21,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-04 01:27:21,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 01:27:21,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-04 01:27:21,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-04 01:27:21,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:21,800 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 01:27:21,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-04 01:27:21,800 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:21,800 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:21,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:21,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 01:27:21,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-04 01:27:21,840 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 01:27:21,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 01:27:21,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1286592278, now seen corresponding path program 1 times [2022-10-04 01:27:21,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 01:27:21,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461433475] [2022-10-04 01:27:21,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:21,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 01:27:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:21,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 01:27:21,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 01:27:21,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461433475] [2022-10-04 01:27:21,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461433475] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-04 01:27:21,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483509028] [2022-10-04 01:27:21,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:21,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 01:27:21,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 01:27:21,885 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) [2022-10-04 01:27:21,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-04 01:27:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:21,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-04 01:27:21,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-04 01:27:21,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 01:27:21,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-04 01:27:22,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 01:27:22,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483509028] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-04 01:27:22,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-04 01:27:22,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-10-04 01:27:22,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415567460] [2022-10-04 01:27:22,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-04 01:27:22,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-04 01:27:22,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 01:27:22,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-04 01:27:22,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-10-04 01:27:22,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:22,035 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 01:27:22,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-04 01:27:22,035 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:22,035 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 01:27:22,035 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:22,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:22,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 01:27:22,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-04 01:27:22,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-04 01:27:22,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-04 01:27:22,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 01:27:22,489 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-04 01:27:22,490 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-10-04 01:27:22,492 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 01:27:22,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 01:27:22,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 01:27:22,520 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-04 01:27:22,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2022-10-04 01:27:22,526 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 01:27:22,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-04 01:27:22,527 INFO L357 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, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@47d027af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 01:27:22,527 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 01:27:22,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-04 01:27:22,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 01:27:22,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1344767443, now seen corresponding path program 1 times [2022-10-04 01:27:22,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 01:27:22,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317358977] [2022-10-04 01:27:22,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:22,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 01:27:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-04 01:27:22,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 01:27:22,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317358977] [2022-10-04 01:27:22,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317358977] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 01:27:22,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 01:27:22,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-04 01:27:22,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374635935] [2022-10-04 01:27:22,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 01:27:22,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-04 01:27:22,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 01:27:22,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-04 01:27:22,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-04 01:27:22,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:22,585 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 01:27:22,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-04 01:27:22,585 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:22,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:22,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-04 01:27:22,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-04 01:27:22,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 01:27:22,592 INFO L85 PathProgramCache]: Analyzing trace with hash -211576850, now seen corresponding path program 1 times [2022-10-04 01:27:22,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 01:27:22,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165625824] [2022-10-04 01:27:22,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:22,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 01:27:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:22,614 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-04 01:27:22,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 01:27:22,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165625824] [2022-10-04 01:27:22,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165625824] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 01:27:22,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 01:27:22,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-04 01:27:22,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907355146] [2022-10-04 01:27:22,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 01:27:22,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-04 01:27:22,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 01:27:22,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-04 01:27:22,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-04 01:27:22,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:22,617 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 01:27:22,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-04 01:27:22,618 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:22,618 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:22,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:22,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 01:27:22,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-04 01:27:22,648 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-04 01:27:22,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 01:27:22,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1553922617, now seen corresponding path program 1 times [2022-10-04 01:27:22,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 01:27:22,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109296688] [2022-10-04 01:27:22,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:22,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 01:27:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:22,686 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-04 01:27:22,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 01:27:22,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109296688] [2022-10-04 01:27:22,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109296688] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-04 01:27:22,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927332282] [2022-10-04 01:27:22,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:22,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 01:27:22,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 01:27:22,700 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) [2022-10-04 01:27:22,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-04 01:27:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:22,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-04 01:27:22,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-04 01:27:22,807 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-04 01:27:22,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-04 01:27:22,840 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-10-04 01:27:22,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927332282] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-04 01:27:22,840 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-04 01:27:22,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-10-04 01:27:22,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648165481] [2022-10-04 01:27:22,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-04 01:27:22,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-04 01:27:22,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 01:27:22,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-04 01:27:22,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-10-04 01:27:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:22,842 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 01:27:22,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-04 01:27:22,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:22,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 01:27:22,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:23,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:23,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 01:27:23,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-04 01:27:23,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-04 01:27:23,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-04 01:27:23,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-04 01:27:23,247 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-04 01:27:23,247 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/3) [2022-10-04 01:27:23,249 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 01:27:23,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 01:27:23,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 01:27:23,273 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) [2022-10-04 01:27:23,339 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 [2022-10-04 01:27:23,342 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 01:27:23,342 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-04 01:27:23,344 INFO L357 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, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@47d027af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 01:27:23,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 01:27:23,384 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-04 01:27:23,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 01:27:23,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1498514944, now seen corresponding path program 1 times [2022-10-04 01:27:23,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 01:27:23,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688127349] [2022-10-04 01:27:23,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:23,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 01:27:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-04 01:27:23,409 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-04 01:27:23,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-04 01:27:23,440 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-04 01:27:23,441 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-04 01:27:23,441 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-04 01:27:23,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-04 01:27:23,442 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-04 01:27:23,444 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (3/3) [2022-10-04 01:27:23,444 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-04 01:27:23,444 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-10-04 01:27:23,466 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-10-04 01:27:23,469 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-04 01:27:23,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-04 01:27:23,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 01:27:23,503 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-04 01:27:23,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (12)] Waiting until timeout for monitored process [2022-10-04 01:27:23,528 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-10-04 01:27:23,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-04 01:27:23,529 INFO L357 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, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@47d027af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-04 01:27:23,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-04 01:27:23,543 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 01:27:23,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 01:27:23,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1847624866, now seen corresponding path program 1 times [2022-10-04 01:27:23,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 01:27:23,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421921054] [2022-10-04 01:27:23,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:23,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 01:27:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 01:27:23,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 01:27:23,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421921054] [2022-10-04 01:27:23,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421921054] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 01:27:23,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 01:27:23,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-04 01:27:23,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251944805] [2022-10-04 01:27:23,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 01:27:23,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-04 01:27:23,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 01:27:23,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-04 01:27:23,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-04 01:27:23,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:23,563 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 01:27:23,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-04 01:27:23,563 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:23,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:23,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-04 01:27:23,564 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 01:27:23,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 01:27:23,565 INFO L85 PathProgramCache]: Analyzing trace with hash 639887967, now seen corresponding path program 1 times [2022-10-04 01:27:23,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 01:27:23,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651943694] [2022-10-04 01:27:23,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:23,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 01:27:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:23,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 01:27:23,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 01:27:23,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651943694] [2022-10-04 01:27:23,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651943694] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 01:27:23,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 01:27:23,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-04 01:27:23,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334836052] [2022-10-04 01:27:23,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 01:27:23,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-04 01:27:23,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 01:27:23,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-04 01:27:23,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-04 01:27:23,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:23,598 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 01:27:23,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-04 01:27:23,598 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:23,598 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:23,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:23,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 01:27:23,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-04 01:27:23,637 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 01:27:23,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 01:27:23,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1211311434, now seen corresponding path program 1 times [2022-10-04 01:27:23,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 01:27:23,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910560606] [2022-10-04 01:27:23,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:23,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 01:27:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:23,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 01:27:23,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 01:27:23,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910560606] [2022-10-04 01:27:23,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910560606] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-04 01:27:23,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118727792] [2022-10-04 01:27:23,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:23,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-04 01:27:23,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-04 01:27:23,677 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) [2022-10-04 01:27:23,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-04 01:27:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:23,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-04 01:27:23,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-04 01:27:23,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 01:27:23,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-04 01:27:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-04 01:27:23,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118727792] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-04 01:27:23,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-04 01:27:23,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-10-04 01:27:23,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563329796] [2022-10-04 01:27:23,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-04 01:27:23,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-04 01:27:23,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 01:27:23,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-04 01:27:23,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-10-04 01:27:23,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:23,815 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 01:27:23,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.5) internal successors, (125), 10 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-04 01:27:23,816 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:23,816 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 01:27:23,816 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:23,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:23,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-04 01:27:23,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-04 01:27:23,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-04 01:27:24,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-04 01:27:24,108 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-04 01:27:24,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-04 01:27:24,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1010199989, now seen corresponding path program 1 times [2022-10-04 01:27:24,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-04 01:27:24,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297900458] [2022-10-04 01:27:24,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-04 01:27:24,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-04 01:27:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-04 01:27:24,160 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-10-04 01:27:24,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-04 01:27:24,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297900458] [2022-10-04 01:27:24,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297900458] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-04 01:27:24,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-04 01:27:24,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-04 01:27:24,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871563539] [2022-10-04 01:27:24,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-04 01:27:24,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-04 01:27:24,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-04 01:27:24,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-04 01:27:24,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-04 01:27:24,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:24,162 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-04 01:27:24,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-04 01:27:24,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-04 01:27:24,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-04 01:27:24,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2022-10-04 01:27:24,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.