/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_ERROR_LOCATION --traceabstraction.trace.refinement.strategy BADGER -s ../../../trunk/examples/settings/gemcutter/SleepMap-ConcreteSmt-VarAbsGlobalSyntactic.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chunk13/reorder_c11_good-10.line340.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-e57bdd3-m [2022-10-21 13:27:21,336 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2022-10-21 13:27:21,385 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/SleepMap-ConcreteSmt-VarAbsGlobalSyntactic.epf [2022-10-21 13:27:21,400 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-21 13:27:21,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-21 13:27:21,401 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-21 13:27:21,401 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-21 13:27:21,402 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-21 13:27:21,402 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-21 13:27:21,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-21 13:27:21,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-21 13:27:21,402 INFO L138 SettingsManager]: * Use SBE=true [2022-10-21 13:27:21,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-21 13:27:21,403 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-21 13:27:21,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-21 13:27:21,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-21 13:27:21,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-21 13:27:21,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-21 13:27:21,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-21 13:27:21,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-21 13:27:21,404 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-21 13:27:21,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-21 13:27:21,404 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-21 13:27:21,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-21 13:27:21,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-21 13:27:21,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-21 13:27:21,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-21 13:27:21,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-21 13:27:21,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-21 13:27:21,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-21 13:27:21,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-21 13:27:21,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-21 13:27:21,405 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-21 13:27:21,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-21 13:27:21,405 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-21 13:27:21,406 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-21 13:27:21,406 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-21 13:27:21,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-21 13:27:21,406 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-21 13:27:21,406 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-21 13:27:21,406 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-21 13:27:21,406 INFO L138 SettingsManager]: * Number of independence relations to use for POR=2 [2022-10-21 13:27:21,406 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_ERROR_LOCATION Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> BADGER [2022-10-21 13:27:21,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-21 13:27:21,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-21 13:27:21,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-21 13:27:21,701 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-21 13:27:21,704 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-21 13:27:21,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chunk13/reorder_c11_good-10.line340.bpl [2022-10-21 13:27:21,708 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chunk13/reorder_c11_good-10.line340.bpl' [2022-10-21 13:27:21,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-21 13:27:21,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-10-21 13:27:21,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-21 13:27:21,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-21 13:27:21,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-21 13:27:21,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "reorder_c11_good-10.line340.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:21" (1/1) ... [2022-10-21 13:27:21,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "reorder_c11_good-10.line340.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:21" (1/1) ... [2022-10-21 13:27:21,788 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-10-21 13:27:21,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-21 13:27:21,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-21 13:27:21,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-21 13:27:21,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-21 13:27:21,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "reorder_c11_good-10.line340.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:21" (1/1) ... [2022-10-21 13:27:21,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "reorder_c11_good-10.line340.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:21" (1/1) ... [2022-10-21 13:27:21,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "reorder_c11_good-10.line340.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:21" (1/1) ... [2022-10-21 13:27:21,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "reorder_c11_good-10.line340.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:21" (1/1) ... [2022-10-21 13:27:21,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "reorder_c11_good-10.line340.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:21" (1/1) ... [2022-10-21 13:27:21,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "reorder_c11_good-10.line340.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:21" (1/1) ... [2022-10-21 13:27:21,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "reorder_c11_good-10.line340.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:21" (1/1) ... [2022-10-21 13:27:21,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-21 13:27:21,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-21 13:27:21,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-21 13:27:21,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-21 13:27:21,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "reorder_c11_good-10.line340.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:21" (1/1) ... [2022-10-21 13:27:21,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-21 13:27:21,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:27:21,851 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) [2022-10-21 13:27:21,880 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 [2022-10-21 13:27:21,907 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-10-21 13:27:21,907 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-10-21 13:27:21,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-21 13:27:21,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-21 13:27:21,907 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-10-21 13:27:21,907 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-10-21 13:27:21,908 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-21 13:27:22,003 INFO L234 CfgBuilder]: Building ICFG [2022-10-21 13:27:22,004 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-21 13:27:22,312 INFO L275 CfgBuilder]: Performing block encoding [2022-10-21 13:27:22,329 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-21 13:27:22,330 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-10-21 13:27:22,333 INFO L202 PluginConnector]: Adding new model reorder_c11_good-10.line340.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 01:27:22 BoogieIcfgContainer [2022-10-21 13:27:22,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-21 13:27:22,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-21 13:27:22,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-21 13:27:22,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-21 13:27:22,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reorder_c11_good-10.line340.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:27:21" (1/2) ... [2022-10-21 13:27:22,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6440c6ec and model type reorder_c11_good-10.line340.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 01:27:22, skipping insertion in model container [2022-10-21 13:27:22,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reorder_c11_good-10.line340.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 01:27:22" (2/2) ... [2022-10-21 13:27:22,345 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_good-10.line340.bpl [2022-10-21 13:27:22,353 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-21 13:27:22,360 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-21 13:27:22,360 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-21 13:27:22,360 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-21 13:27:22,443 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-10-21 13:27:22,489 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:27:22,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:27:22,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:27:22,492 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) [2022-10-21 13:27:22,493 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 [2022-10-21 13:27:22,514 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:22,532 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:27:22,532 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:27:22,532 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:27:22,544 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 13:27:22,550 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;@28429da5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:22,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:27:22,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:27:22,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:22,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1228051134, now seen corresponding path program 1 times [2022-10-21 13:27:22,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:22,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722740846] [2022-10-21 13:27:22,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:22,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:27:22,987 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:22,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722740846] [2022-10-21 13:27:22,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722740846] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:27:22,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:27:22,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-21 13:27:22,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132267299] [2022-10-21 13:27:23,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:27:23,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-21 13:27:23,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:23,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-21 13:27:23,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-21 13:27:23,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:23,056 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:23,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:23,056 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:23,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-21 13:27:23,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-21 13:27:23,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-21 13:27:23,229 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 13:27:23,230 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-10-21 13:27:23,234 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:27:23,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:27:23,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:27:23,252 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-21 13:27:23,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process [2022-10-21 13:27:23,256 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:23,256 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:27:23,257 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:27:23,257 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:27:23,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 13:27:23,257 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;@28429da5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:23,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:27:23,334 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:23,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:23,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1516539165, now seen corresponding path program 1 times [2022-10-21 13:27:23,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:23,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346086567] [2022-10-21 13:27:23,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:23,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-21 13:27:23,404 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:23,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346086567] [2022-10-21 13:27:23,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346086567] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:27:23,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:27:23,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-21 13:27:23,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568301879] [2022-10-21 13:27:23,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:27:23,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-21 13:27:23,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:23,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-21 13:27:23,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-21 13:27:23,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:23,406 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:23,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:23,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:23,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:23,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-21 13:27:23,430 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:23,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:23,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1867339102, now seen corresponding path program 1 times [2022-10-21 13:27:23,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:23,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477603553] [2022-10-21 13:27:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:23,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:23,484 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-21 13:27:23,484 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:23,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477603553] [2022-10-21 13:27:23,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477603553] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:27:23,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:27:23,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-21 13:27:23,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026437409] [2022-10-21 13:27:23,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:27:23,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-21 13:27:23,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:23,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-21 13:27:23,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-21 13:27:23,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:23,487 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:23,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:23,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:23,487 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:23,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:23,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:23,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-21 13:27:23,563 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:23,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:23,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1490703190, now seen corresponding path program 1 times [2022-10-21 13:27:23,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:23,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114368421] [2022-10-21 13:27:23,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:23,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:23,622 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-21 13:27:23,622 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:23,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114368421] [2022-10-21 13:27:23,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114368421] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:27:23,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:27:23,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 13:27:23,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323395590] [2022-10-21 13:27:23,623 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:27:23,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:27:23,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:23,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:27:23,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:27:23,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:23,624 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:23,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:23,624 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:23,624 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:23,624 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:23,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:23,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:23,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:27:23,667 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 13:27:23,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-21 13:27:23,670 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-21 13:27:23,671 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/3) [2022-10-21 13:27:23,673 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:27:23,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:27:23,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:27:23,675 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) [2022-10-21 13:27:23,675 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 [2022-10-21 13:27:23,677 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:23,678 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:27:23,678 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:27:23,678 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:27:23,678 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 13:27:23,679 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;@28429da5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:23,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:27:23,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:23,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:23,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1414965878, now seen corresponding path program 1 times [2022-10-21 13:27:23,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:23,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940760956] [2022-10-21 13:27:23,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:23,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:27:23,743 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-21 13:27:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:27:23,779 INFO L130 FreeRefinementEngine]: Strategy BADGER found a feasible trace [2022-10-21 13:27:23,779 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-21 13:27:23,779 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 13:27:23,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-21 13:27:23,780 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 13:27:23,780 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (3/3) [2022-10-21 13:27:23,781 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-21 13:27:23,781 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-10-21 13:27:23,795 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-10-21 13:27:23,798 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:27:23,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:27:23,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:27:23,799 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-21 13:27:23,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2022-10-21 13:27:23,803 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:23,804 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:27:23,804 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:27:23,804 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:27:23,804 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 13:27:23,804 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;@28429da5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:23,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:27:23,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:27:23,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:23,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1007224834, now seen corresponding path program 1 times [2022-10-21 13:27:23,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:23,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724219353] [2022-10-21 13:27:23,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:23,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:27:23,925 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:23,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724219353] [2022-10-21 13:27:23,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724219353] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:27:23,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:27:23,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-21 13:27:23,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185958140] [2022-10-21 13:27:23,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:27:23,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-21 13:27:23,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:23,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-21 13:27:23,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-21 13:27:23,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:23,927 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:23,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:23,928 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:24,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-21 13:27:24,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-21 13:27:24,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-21 13:27:24,342 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 13:27:24,342 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-10-21 13:27:24,345 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:27:24,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:27:24,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:27:24,347 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) [2022-10-21 13:27:24,347 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 [2022-10-21 13:27:24,350 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:24,350 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:27:24,351 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:27:24,351 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:27:24,351 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 13:27:24,351 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;@28429da5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:24,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:27:24,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:24,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:24,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1332998221, now seen corresponding path program 1 times [2022-10-21 13:27:24,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:24,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682422329] [2022-10-21 13:27:24,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:24,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-10-21 13:27:24,449 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:24,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682422329] [2022-10-21 13:27:24,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682422329] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:27:24,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:27:24,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-21 13:27:24,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136764181] [2022-10-21 13:27:24,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:27:24,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-21 13:27:24,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:24,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-21 13:27:24,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-21 13:27:24,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:24,451 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:24,451 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) [2022-10-21 13:27:24,451 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:24,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:24,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-21 13:27:24,461 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:24,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:24,462 INFO L85 PathProgramCache]: Analyzing trace with hash -363417198, now seen corresponding path program 1 times [2022-10-21 13:27:24,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:24,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106089832] [2022-10-21 13:27:24,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:24,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:24,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:24,501 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-10-21 13:27:24,501 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:24,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106089832] [2022-10-21 13:27:24,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106089832] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:27:24,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:27:24,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-21 13:27:24,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041788196] [2022-10-21 13:27:24,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:27:24,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-21 13:27:24,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:24,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-21 13:27:24,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-21 13:27:24,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:24,503 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:24,503 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) [2022-10-21 13:27:24,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:24,503 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:24,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:24,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:24,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-21 13:27:24,573 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:24,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:24,574 INFO L85 PathProgramCache]: Analyzing trace with hash -881518778, now seen corresponding path program 1 times [2022-10-21 13:27:24,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:24,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959861405] [2022-10-21 13:27:24,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:24,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:24,655 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-10-21 13:27:24,656 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:24,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959861405] [2022-10-21 13:27:24,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959861405] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:27:24,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:27:24,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 13:27:24,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156817974] [2022-10-21 13:27:24,656 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:27:24,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:27:24,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:24,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:27:24,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:27:24,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:24,657 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:24,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:24,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:24,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:24,658 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:24,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:24,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:24,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:27:24,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-21 13:27:24,826 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:24,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:24,827 INFO L85 PathProgramCache]: Analyzing trace with hash -812878183, now seen corresponding path program 1 times [2022-10-21 13:27:24,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:24,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35965582] [2022-10-21 13:27:24,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:24,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:24,875 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 29 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-10-21 13:27:24,875 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:24,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35965582] [2022-10-21 13:27:24,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35965582] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:27:24,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:27:24,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 13:27:24,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578108320] [2022-10-21 13:27:24,876 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:27:24,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:27:24,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:24,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:27:24,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:27:24,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:24,879 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:24,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:24,879 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:24,880 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:24,880 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:27:24,880 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:25,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:27:25,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:27:25,694 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 13:27:25,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-21 13:27:25,696 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-10-21 13:27:25,696 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/3) [2022-10-21 13:27:25,698 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:27:25,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:27:25,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:27:25,700 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) [2022-10-21 13:27:25,701 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 [2022-10-21 13:27:25,702 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:25,703 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:27:25,703 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:27:25,703 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:27:25,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 13:27:25,704 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;@28429da5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:25,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:27:25,744 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:25,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:25,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1695039615, now seen corresponding path program 1 times [2022-10-21 13:27:25,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:25,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431723549] [2022-10-21 13:27:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:25,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:27:25,760 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-21 13:27:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:27:25,812 INFO L130 FreeRefinementEngine]: Strategy BADGER found a feasible trace [2022-10-21 13:27:25,812 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-21 13:27:25,812 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 13:27:25,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-21 13:27:25,813 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 13:27:25,813 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (3/3) [2022-10-21 13:27:25,813 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-21 13:27:25,813 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-10-21 13:27:25,841 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-10-21 13:27:25,843 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:27:25,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:27:25,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:27:25,859 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-21 13:27:25,864 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:25,864 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:27:25,865 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:27:25,865 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:27:25,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 13:27:25,865 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;@28429da5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:25,865 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:27:25,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2022-10-21 13:27:25,903 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:27:25,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:25,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1729606146, now seen corresponding path program 1 times [2022-10-21 13:27:25,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:25,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485951060] [2022-10-21 13:27:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:25,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:25,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:27:25,965 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:25,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485951060] [2022-10-21 13:27:25,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485951060] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:27:25,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:27:25,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-21 13:27:25,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500823944] [2022-10-21 13:27:25,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:27:25,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-21 13:27:25,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:25,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-21 13:27:25,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-21 13:27:25,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:25,967 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:25,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:25,968 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:29,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-21 13:27:29,644 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-21 13:27:29,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-21 13:27:29,645 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 13:27:29,645 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-10-21 13:27:29,647 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:27:29,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:27:29,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:27:29,693 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) [2022-10-21 13:27:29,743 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:29,744 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:27:29,744 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:27:29,744 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:27:29,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 13:27:29,744 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;@28429da5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:29,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:27:29,779 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 [2022-10-21 13:27:29,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:29,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:29,818 INFO L85 PathProgramCache]: Analyzing trace with hash 311052828, now seen corresponding path program 1 times [2022-10-21 13:27:29,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:29,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829368418] [2022-10-21 13:27:29,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:29,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:29,838 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-10-21 13:27:29,839 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:29,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829368418] [2022-10-21 13:27:29,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829368418] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:27:29,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:27:29,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-21 13:27:29,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241131363] [2022-10-21 13:27:29,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:27:29,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-21 13:27:29,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:29,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-21 13:27:29,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-21 13:27:29,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:29,841 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:29,841 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) [2022-10-21 13:27:29,841 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:29,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:29,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-21 13:27:29,855 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:29,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:29,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1615446557, now seen corresponding path program 1 times [2022-10-21 13:27:29,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:29,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751803601] [2022-10-21 13:27:29,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:29,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-10-21 13:27:29,883 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:29,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751803601] [2022-10-21 13:27:29,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751803601] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:27:29,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:27:29,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-21 13:27:29,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505961792] [2022-10-21 13:27:29,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:27:29,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-21 13:27:29,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:29,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-21 13:27:29,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-21 13:27:29,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:29,884 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:29,885 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) [2022-10-21 13:27:29,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:29,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:29,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:29,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:29,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-21 13:27:29,959 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:29,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:29,960 INFO L85 PathProgramCache]: Analyzing trace with hash -975258115, now seen corresponding path program 1 times [2022-10-21 13:27:29,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:29,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146988148] [2022-10-21 13:27:29,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:29,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:29,998 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-10-21 13:27:29,998 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:29,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146988148] [2022-10-21 13:27:29,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146988148] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:27:29,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:27:29,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 13:27:29,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179080955] [2022-10-21 13:27:29,999 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:27:30,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:27:30,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:30,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:27:30,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:27:30,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:30,004 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:30,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:30,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:30,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:30,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:30,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:30,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:30,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:27:30,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-21 13:27:30,098 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:30,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:30,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1418474782, now seen corresponding path program 1 times [2022-10-21 13:27:30,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:30,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435722266] [2022-10-21 13:27:30,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:30,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:30,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:30,150 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-10-21 13:27:30,151 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:30,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435722266] [2022-10-21 13:27:30,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435722266] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:27:30,151 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:27:30,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 13:27:30,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759347556] [2022-10-21 13:27:30,153 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:27:30,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:27:30,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:30,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:27:30,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:27:30,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:30,154 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:30,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:30,154 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:30,154 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:30,154 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:27:30,154 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:43,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:43,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:27:43,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:27:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:27:43,415 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 13:27:43,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-10-21 13:27:43,416 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-10-21 13:27:43,417 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/3) [2022-10-21 13:27:43,418 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:27:43,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:27:43,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:27:43,420 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-21 13:27:43,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process [2022-10-21 13:27:43,432 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:43,433 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:27:43,433 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:27:43,433 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:27:43,433 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 13:27:43,433 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;@28429da5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:43,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:27:43,474 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:27:43,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:43,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2054665507, now seen corresponding path program 1 times [2022-10-21 13:27:43,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:43,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571557725] [2022-10-21 13:27:43,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:43,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:27:43,491 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-21 13:27:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:27:43,516 INFO L130 FreeRefinementEngine]: Strategy BADGER found a feasible trace [2022-10-21 13:27:43,516 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-21 13:27:43,516 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 13:27:43,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-10-21 13:27:43,517 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 13:27:43,517 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (3/3) [2022-10-21 13:27:43,517 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-21 13:27:43,517 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-10-21 13:27:43,538 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-10-21 13:27:43,540 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:27:43,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:27:43,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:27:43,542 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) [2022-10-21 13:27:43,543 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 [2022-10-21 13:27:43,545 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:43,545 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:27:43,545 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:27:43,545 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:27:43,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 13:27:43,546 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;@28429da5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:27:43,546 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:27:43,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:27:43,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:27:43,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1574308130, now seen corresponding path program 1 times [2022-10-21 13:27:43,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:27:43,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953189828] [2022-10-21 13:27:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:27:43,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:27:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:27:43,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:27:43,635 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:27:43,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953189828] [2022-10-21 13:27:43,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953189828] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:27:43,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:27:43,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-21 13:27:43,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153552874] [2022-10-21 13:27:43,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:27:43,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-21 13:27:43,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:27:43,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-21 13:27:43,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-21 13:27:43,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:27:43,638 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:27:43,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:27:43,638 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:28:51,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-21 13:28:51,931 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-21 13:28:51,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-10-21 13:28:51,931 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 13:28:51,932 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-10-21 13:28:51,933 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:28:51,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:28:51,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:28:51,935 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) [2022-10-21 13:28:51,936 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 [2022-10-21 13:28:51,944 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:28:51,944 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:28:51,944 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:28:51,944 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:28:51,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 13:28:51,945 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;@28429da5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:28:51,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:28:52,009 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:28:52,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:28:52,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1998264292, now seen corresponding path program 1 times [2022-10-21 13:28:52,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:28:52,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959412853] [2022-10-21 13:28:52,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:28:52,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:28:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:28:52,041 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-21 13:28:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:28:52,090 INFO L130 FreeRefinementEngine]: Strategy BADGER found a feasible trace [2022-10-21 13:28:52,090 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-21 13:28:52,090 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 13:28:52,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-10-21 13:28:52,092 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 13:28:52,092 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/3) [2022-10-21 13:28:52,092 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-21 13:28:52,092 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-10-21 13:28:52,123 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-10-21 13:28:52,125 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:28:52,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:28:52,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:28:52,127 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-10-21 13:28:52,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (13)] Waiting until timeout for monitored process [2022-10-21 13:28:52,131 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:28:52,132 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:28:52,132 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:28:52,132 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:28:52,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 13:28:52,133 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;@28429da5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:28:52,133 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:28:52,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:28:52,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:28:52,167 INFO L85 PathProgramCache]: Analyzing trace with hash 122939870, now seen corresponding path program 1 times [2022-10-21 13:28:52,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:28:52,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588214494] [2022-10-21 13:28:52,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:28:52,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:28:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:28:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:28:52,212 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:28:52,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588214494] [2022-10-21 13:28:52,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588214494] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:28:52,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:28:52,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-21 13:28:52,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069378158] [2022-10-21 13:28:52,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:28:52,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-21 13:28:52,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:28:52,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-21 13:28:52,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-21 13:28:52,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:28:52,213 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:28:52,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:28:52,213 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.