/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-20.line366.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-e57bdd3-m [2022-10-21 13:30:44,473 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2022-10-21 13:30:44,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-21 13:30:44,543 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-21 13:30:44,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-21 13:30:44,544 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 13:30:44,577 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-21 13:30:44,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-21 13:30:44,578 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-21 13:30:44,578 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-21 13:30:44,579 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-21 13:30:44,579 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-21 13:30:44,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-21 13:30:44,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-21 13:30:44,581 INFO L138 SettingsManager]: * Use SBE=true [2022-10-21 13:30:44,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-21 13:30:44,581 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-21 13:30:44,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-21 13:30:44,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-21 13:30:44,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-21 13:30:44,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-21 13:30:44,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-21 13:30:44,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-21 13:30:44,582 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-21 13:30:44,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-21 13:30:44,582 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-21 13:30:44,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-21 13:30:44,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-21 13:30:44,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-21 13:30:44,582 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-10-21 13:30:44,583 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-21 13:30:44,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-21 13:30:44,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-21 13:30:44,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-21 13:30:44,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-21 13:30:44,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-21 13:30:44,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-21 13:30:44,583 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-21 13:30:44,583 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-10-21 13:30:44,583 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-10-21 13:30:44,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-21 13:30:44,584 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-10-21 13:30:44,584 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-10-21 13:30:44,584 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-21 13:30:44,584 INFO L138 SettingsManager]: * Number of independence relations to use for POR=2 [2022-10-21 13:30:44,584 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_ERROR_LOCATION Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> BADGER [2022-10-21 13:30:44,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-21 13:30:44,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-21 13:30:44,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-21 13:30:44,869 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-10-21 13:30:44,870 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-10-21 13:30:44,872 INFO L432 ainManager$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-20.line366.bpl [2022-10-21 13:30:44,873 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chunk13/reorder_c11_good-20.line366.bpl' [2022-10-21 13:30:44,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-21 13:30:44,907 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-10-21 13:30:44,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-21 13:30:44,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-21 13:30:44,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-21 13:30:44,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:30:44" (1/1) ... [2022-10-21 13:30:44,936 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:30:44" (1/1) ... [2022-10-21 13:30:44,942 INFO L138 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-10-21 13:30:44,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-21 13:30:44,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-21 13:30:44,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-21 13:30:44,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-21 13:30:44,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:30:44" (1/1) ... [2022-10-21 13:30:44,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:30:44" (1/1) ... [2022-10-21 13:30:44,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:30:44" (1/1) ... [2022-10-21 13:30:44,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:30:44" (1/1) ... [2022-10-21 13:30:44,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:30:44" (1/1) ... [2022-10-21 13:30:44,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:30:44" (1/1) ... [2022-10-21 13:30:44,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:30:44" (1/1) ... [2022-10-21 13:30:44,985 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-21 13:30:44,986 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-21 13:30:44,986 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-21 13:30:44,986 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-21 13:30:44,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:30:44" (1/1) ... [2022-10-21 13:30:44,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-21 13:30:45,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:30:45,015 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 13:30:45,018 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 13:30:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-10-21 13:30:45,048 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-10-21 13:30:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-21 13:30:45,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-21 13:30:45,048 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-10-21 13:30:45,048 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-10-21 13:30:45,049 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 13:30:45,146 INFO L234 CfgBuilder]: Building ICFG [2022-10-21 13:30:45,148 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-21 13:30:45,414 INFO L275 CfgBuilder]: Performing block encoding [2022-10-21 13:30:45,422 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-21 13:30:45,422 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-10-21 13:30:45,424 INFO L202 PluginConnector]: Adding new model reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 01:30:45 BoogieIcfgContainer [2022-10-21 13:30:45,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-21 13:30:45,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-21 13:30:45,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-21 13:30:45,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-21 13:30:45,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.10 01:30:44" (1/2) ... [2022-10-21 13:30:45,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1478e23f and model type reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 01:30:45, skipping insertion in model container [2022-10-21 13:30:45,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reorder_c11_good-20.line366.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 01:30:45" (2/2) ... [2022-10-21 13:30:45,437 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_good-20.line366.bpl [2022-10-21 13:30:45,446 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-21 13:30:45,453 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-21 13:30:45,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-21 13:30:45,453 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-21 13:30:45,548 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-10-21 13:30:45,602 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:30:45,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:30:45,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:30:45,604 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 13:30:45,605 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 13:30:45,625 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:30:45,647 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:30:45,647 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:30:45,647 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:30:45,660 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 13:30:45,666 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;@6744f7bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:30:45,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:30:45,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:30:45,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:30:45,821 INFO L85 PathProgramCache]: Analyzing trace with hash -7742114, now seen corresponding path program 1 times [2022-10-21 13:30:45,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:30:45,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833182158] [2022-10-21 13:30:45,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:30:45,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:30:45,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:30:45,979 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 13:30:45,980 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:30:45,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833182158] [2022-10-21 13:30:45,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833182158] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:30:45,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:30:45,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-21 13:30:45,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141629874] [2022-10-21 13:30:45,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:30:45,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-21 13:30:45,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:30:46,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-21 13:30:46,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-21 13:30:46,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,046 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:30:46,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:30:46,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-21 13:30:46,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:30:46,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:30:46,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1815196577, now seen corresponding path program 1 times [2022-10-21 13:30:46,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:30:46,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399679040] [2022-10-21 13:30:46,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:30:46,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:30:46,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:30:46,139 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 13:30:46,140 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:30:46,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399679040] [2022-10-21 13:30:46,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399679040] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:30:46,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:30:46,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-21 13:30:46,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368656098] [2022-10-21 13:30:46,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:30:46,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-21 13:30:46,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:30:46,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-21 13:30:46,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-21 13:30:46,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,143 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:30:46,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:30:46,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,143 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:30:46,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-21 13:30:46,248 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:30:46,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:30:46,248 INFO L85 PathProgramCache]: Analyzing trace with hash -824676924, now seen corresponding path program 1 times [2022-10-21 13:30:46,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:30:46,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841863771] [2022-10-21 13:30:46,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:30:46,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:30:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:30:46,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:30:46,322 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:30:46,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841863771] [2022-10-21 13:30:46,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841863771] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:30:46,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:30:46,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 13:30:46,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717734340] [2022-10-21 13:30:46,323 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:30:46,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:30:46,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:30:46,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:30:46,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:30:46,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,324 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:30:46,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 13:30:46,324 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,324 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:30:46,324 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:30:46,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:30:46,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-21 13:30:46,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-21 13:30:46,389 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-21 13:30:46,390 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-10-21 13:30:46,394 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:30:46,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:30:46,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:30:46,396 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 13:30:46,397 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 13:30:46,399 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:30:46,400 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:30:46,400 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:30:46,400 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:30:46,400 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 13:30:46,401 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;@6744f7bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:30:46,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:30:46,489 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:30:46,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:30:46,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1954159037, now seen corresponding path program 1 times [2022-10-21 13:30:46,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:30:46,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100475978] [2022-10-21 13:30:46,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:30:46,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:30:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:30:46,544 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-21 13:30:46,544 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:30:46,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100475978] [2022-10-21 13:30:46,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100475978] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:30:46,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:30:46,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-21 13:30:46,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588698177] [2022-10-21 13:30:46,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:30:46,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-21 13:30:46,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:30:46,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-21 13:30:46,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-21 13:30:46,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,546 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:30:46,546 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 13:30:46,546 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-21 13:30:46,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:30:46,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:30:46,569 INFO L85 PathProgramCache]: Analyzing trace with hash -229517890, now seen corresponding path program 1 times [2022-10-21 13:30:46,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:30:46,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549745403] [2022-10-21 13:30:46,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:30:46,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:30:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:30:46,623 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-21 13:30:46,623 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:30:46,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549745403] [2022-10-21 13:30:46,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549745403] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:30:46,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:30:46,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-21 13:30:46,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144412884] [2022-10-21 13:30:46,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:30:46,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-21 13:30:46,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:30:46,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-21 13:30:46,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-21 13:30:46,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,625 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:30:46,625 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 13:30:46,625 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,625 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:30:46,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-21 13:30:46,698 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:30:46,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:30:46,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1873323997, now seen corresponding path program 1 times [2022-10-21 13:30:46,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:30:46,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326809088] [2022-10-21 13:30:46,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:30:46,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:30:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:30:46,766 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-21 13:30:46,766 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:30:46,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326809088] [2022-10-21 13:30:46,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326809088] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:30:46,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:30:46,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 13:30:46,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937845272] [2022-10-21 13:30:46,767 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:30:46,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:30:46,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:30:46,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:30:46,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:30:46,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,768 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:30:46,769 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 13:30:46,769 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,769 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:30:46,769 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:46,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:30:46,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:30:46,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 13:30:46,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-21 13:30:46,826 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-21 13:30:46,826 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/3) [2022-10-21 13:30:46,837 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:30:46,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:30:46,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:30:46,839 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 13:30:46,840 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 13:30:46,842 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:30:46,843 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:30:46,843 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:30:46,843 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:30:46,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 13:30:46,844 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;@6744f7bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:30:46,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:30:46,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:30:46,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:30:46,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1650828534, now seen corresponding path program 1 times [2022-10-21 13:30:46,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:30:46,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037340279] [2022-10-21 13:30:46,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:30:46,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:30:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:30:46,906 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-21 13:30:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:30:46,939 INFO L130 FreeRefinementEngine]: Strategy BADGER found a feasible trace [2022-10-21 13:30:46,939 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-21 13:30:46,939 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 13:30:46,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-21 13:30:46,940 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 13:30:46,940 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (3/3) [2022-10-21 13:30:46,941 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-21 13:30:46,941 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-10-21 13:30:46,954 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-10-21 13:30:46,957 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:30:46,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:30:46,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:30:46,959 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 13:30:46,960 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 13:30:46,962 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:30:46,962 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:30:46,962 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:30:46,962 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:30:46,963 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 13:30:46,963 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;@6744f7bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:30:46,963 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:30:47,010 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:30:47,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:30:47,011 INFO L85 PathProgramCache]: Analyzing trace with hash -832131362, now seen corresponding path program 1 times [2022-10-21 13:30:47,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:30:47,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116869583] [2022-10-21 13:30:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:30:47,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:30:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:30:47,048 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 13:30:47,049 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:30:47,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116869583] [2022-10-21 13:30:47,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116869583] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:30:47,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:30:47,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-21 13:30:47,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791984706] [2022-10-21 13:30:47,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:30:47,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-21 13:30:47,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:30:47,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-21 13:30:47,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-21 13:30:47,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:47,050 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:30:47,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:30:47,050 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:47,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:47,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-21 13:30:47,063 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:30:47,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:30:47,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1655381471, now seen corresponding path program 1 times [2022-10-21 13:30:47,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:30:47,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818447827] [2022-10-21 13:30:47,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:30:47,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:30:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:30:47,105 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 13:30:47,106 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:30:47,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818447827] [2022-10-21 13:30:47,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818447827] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:30:47,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:30:47,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-21 13:30:47,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183171043] [2022-10-21 13:30:47,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:30:47,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-21 13:30:47,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:30:47,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-21 13:30:47,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-21 13:30:47,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:47,108 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:30:47,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:30:47,108 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:47,108 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:47,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:47,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:30:47,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-21 13:30:47,164 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:30:47,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:30:47,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1817451012, now seen corresponding path program 1 times [2022-10-21 13:30:47,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:30:47,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893139368] [2022-10-21 13:30:47,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:30:47,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:30:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:30:47,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:30:47,220 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:30:47,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893139368] [2022-10-21 13:30:47,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893139368] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:30:47,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:30:47,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 13:30:47,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242417867] [2022-10-21 13:30:47,221 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:30:47,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:30:47,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:30:47,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:30:47,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:30:47,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:47,223 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:30:47,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 13:30:47,223 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:47,223 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:30:47,223 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:47,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:47,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:30:47,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:30:47,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-21 13:30:47,386 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:30:47,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:30:47,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1161017024, now seen corresponding path program 1 times [2022-10-21 13:30:47,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:30:47,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831424463] [2022-10-21 13:30:47,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:30:47,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:30:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:30:47,478 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-21 13:30:47,478 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:30:47,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831424463] [2022-10-21 13:30:47,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831424463] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:30:47,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:30:47,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-21 13:30:47,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910167805] [2022-10-21 13:30:47,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:30:47,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:30:47,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:30:47,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:30:47,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:30:47,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:47,481 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:30:47,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 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 13:30:47,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:47,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:30:47,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:30:47,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:57,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:57,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:30:57,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:30:57,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-21 13:30:57,073 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-10-21 13:30:57,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-21 13:30:57,074 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-10-21 13:30:57,075 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-10-21 13:30:57,077 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:30:57,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:30:57,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:30:57,078 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 13:30:57,079 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 13:30:57,082 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:30:57,082 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:30:57,083 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:30:57,083 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:30:57,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-10-21 13:30:57,083 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;@6744f7bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:30:57,083 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:30:57,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-10-21 13:30:57,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:30:57,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1419941222, now seen corresponding path program 1 times [2022-10-21 13:30:57,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:30:57,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539629210] [2022-10-21 13:30:57,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:30:57,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:30:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:30:57,138 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-21 13:30:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-21 13:30:57,162 INFO L130 FreeRefinementEngine]: Strategy BADGER found a feasible trace [2022-10-21 13:30:57,162 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-21 13:30:57,163 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-10-21 13:30:57,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-10-21 13:30:57,163 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-10-21 13:30:57,164 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/3) [2022-10-21 13:30:57,164 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-10-21 13:30:57,164 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-10-21 13:30:57,182 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-10-21 13:30:57,184 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-10-21 13:30:57,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-10-21 13:30:57,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-21 13:30:57,186 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 13:30:57,187 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 13:30:57,189 INFO L100 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:30:57,190 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2022-10-21 13:30:57,190 WARN L162 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2022-10-21 13:30:57,190 WARN L163 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2022-10-21 13:30:57,190 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-10-21 13:30:57,190 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;@6744f7bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-21 13:30:57,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-21 13:30:57,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:30:57,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:30:57,229 INFO L85 PathProgramCache]: Analyzing trace with hash -717737762, now seen corresponding path program 1 times [2022-10-21 13:30:57,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:30:57,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794217973] [2022-10-21 13:30:57,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:30:57,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:30:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:30:57,247 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 13:30:57,247 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:30:57,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794217973] [2022-10-21 13:30:57,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794217973] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:30:57,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:30:57,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-21 13:30:57,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805471038] [2022-10-21 13:30:57,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:30:57,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-21 13:30:57,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:30:57,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-21 13:30:57,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-21 13:30:57,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:57,250 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:30:57,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:30:57,250 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:57,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:57,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-10-21 13:30:57,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:30:57,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:30:57,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1769775071, now seen corresponding path program 1 times [2022-10-21 13:30:57,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:30:57,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508658714] [2022-10-21 13:30:57,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:30:57,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:30:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:30:57,276 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 13:30:57,277 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:30:57,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508658714] [2022-10-21 13:30:57,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508658714] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:30:57,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:30:57,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-21 13:30:57,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886651891] [2022-10-21 13:30:57,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:30:57,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-21 13:30:57,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:30:57,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-21 13:30:57,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-21 13:30:57,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:57,279 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:30:57,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-21 13:30:57,279 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:57,279 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:57,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:57,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:30:57,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-10-21 13:30:57,319 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:30:57,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:30:57,320 INFO L85 PathProgramCache]: Analyzing trace with hash -340710211, now seen corresponding path program 1 times [2022-10-21 13:30:57,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:30:57,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043784684] [2022-10-21 13:30:57,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:30:57,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:30:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:30:57,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-21 13:30:57,356 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:30:57,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043784684] [2022-10-21 13:30:57,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043784684] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-21 13:30:57,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-21 13:30:57,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2022-10-21 13:30:57,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845292841] [2022-10-21 13:30:57,357 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-21 13:30:57,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:30:57,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:30:57,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:30:57,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:30:57,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:57,358 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:30:57,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 13:30:57,358 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:57,358 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:30:57,358 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:57,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:57,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:30:57,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:30:57,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-10-21 13:30:57,413 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-10-21 13:30:57,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-21 13:30:57,413 INFO L85 PathProgramCache]: Analyzing trace with hash 805544416, now seen corresponding path program 1 times [2022-10-21 13:30:57,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy BADGER [2022-10-21 13:30:57,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133508788] [2022-10-21 13:30:57,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-21 13:30:57,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-21 13:30:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-21 13:30:57,473 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-10-21 13:30:57,474 INFO L136 FreeRefinementEngine]: Strategy BADGER found an infeasible trace [2022-10-21 13:30:57,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133508788] [2022-10-21 13:30:57,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133508788] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-21 13:30:57,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-21 13:30:57,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-21 13:30:57,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600463699] [2022-10-21 13:30:57,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-21 13:30:57,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-21 13:30:57,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy BADGER [2022-10-21 13:30:57,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-21 13:30:57,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-21 13:30:57,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:57,480 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-10-21 13:30:57,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 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 13:30:57,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-10-21 13:30:57,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-10-21 13:30:57,480 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2022-10-21 13:30:57,481 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.