/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -i ../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/reorder_c11_bad-10.line341.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m [2022-09-30 06:35:23,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-30 06:35:23,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-30 06:35:23,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-09-30 06:35:23,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf [2022-09-30 06:35:23,591 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-30 06:35:23,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-30 06:35:23,592 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-30 06:35:23,592 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-30 06:35:23,592 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-30 06:35:23,592 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-30 06:35:23,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-30 06:35:23,593 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-30 06:35:23,593 INFO L138 SettingsManager]: * Use SBE=true [2022-09-30 06:35:23,593 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-30 06:35:23,593 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-30 06:35:23,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-30 06:35:23,594 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-30 06:35:23,594 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-30 06:35:23,594 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-30 06:35:23,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-30 06:35:23,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-30 06:35:23,594 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-30 06:35:23,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-30 06:35:23,594 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-30 06:35:23,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-30 06:35:23,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-30 06:35:23,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-30 06:35:23,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-30 06:35:23,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-30 06:35:23,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-30 06:35:23,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-30 06:35:23,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-30 06:35:23,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-30 06:35:23,596 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-30 06:35:23,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-30 06:35:23,596 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-30 06:35:23,596 INFO L138 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2022-09-30 06:35:23,596 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2022-09-30 06:35:23,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-30 06:35:23,597 INFO L138 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION [2022-09-30 06:35:23,597 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2022-09-30 06:35:23,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-09-30 06:35:23,597 INFO L138 SettingsManager]: * Independence relation used for POR in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-30 06:35:23,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-30 06:35:23,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-30 06:35:23,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-30 06:35:23,825 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-09-30 06:35:23,826 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-09-30 06:35:23,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/reorder_c11_bad-10.line341.bpl [2022-09-30 06:35:23,828 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/reorder_c11_bad-10.line341.bpl' [2022-09-30 06:35:23,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-30 06:35:23,895 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2022-09-30 06:35:23,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-30 06:35:23,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-30 06:35:23,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-30 06:35:23,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "reorder_c11_bad-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 06:35:23" (1/1) ... [2022-09-30 06:35:23,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "reorder_c11_bad-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 06:35:23" (1/1) ... [2022-09-30 06:35:23,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "reorder_c11_bad-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 06:35:23" (1/1) ... [2022-09-30 06:35:23,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "reorder_c11_bad-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 06:35:23" (1/1) ... [2022-09-30 06:35:23,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "reorder_c11_bad-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 06:35:23" (1/1) ... [2022-09-30 06:35:23,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "reorder_c11_bad-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 06:35:23" (1/1) ... [2022-09-30 06:35:23,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "reorder_c11_bad-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 06:35:23" (1/1) ... [2022-09-30 06:35:23,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-30 06:35:23,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-30 06:35:23,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-30 06:35:23,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-30 06:35:23,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "reorder_c11_bad-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 06:35:23" (1/1) ... [2022-09-30 06:35:23,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-30 06:35:23,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:35:24,003 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) [2022-09-30 06:35:24,028 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 [2022-09-30 06:35:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-09-30 06:35:24,051 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-09-30 06:35:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-09-30 06:35:24,051 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-09-30 06:35:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-30 06:35:24,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-30 06:35:24,052 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-30 06:35:24,191 INFO L234 CfgBuilder]: Building ICFG [2022-09-30 06:35:24,193 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-30 06:35:24,465 INFO L275 CfgBuilder]: Performing block encoding [2022-09-30 06:35:24,474 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-30 06:35:24,474 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-30 06:35:24,476 INFO L202 PluginConnector]: Adding new model reorder_c11_bad-10.line341.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 06:35:24 BoogieIcfgContainer [2022-09-30 06:35:24,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-30 06:35:24,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-30 06:35:24,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-30 06:35:24,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-30 06:35:24,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reorder_c11_bad-10.line341.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 06:35:23" (1/2) ... [2022-09-30 06:35:24,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1793759 and model type reorder_c11_bad-10.line341.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 06:35:24, skipping insertion in model container [2022-09-30 06:35:24,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "reorder_c11_bad-10.line341.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 06:35:24" (2/2) ... [2022-09-30 06:35:24,488 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_c11_bad-10.line341.bpl [2022-09-30 06:35:24,494 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-30 06:35:24,501 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-30 06:35:24,501 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-30 06:35:24,501 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-30 06:35:24,564 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-30 06:35:24,624 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:35:24,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:35:24,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:35:24,626 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) [2022-09-30 06:35:24,630 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 [2022-09-30 06:35:24,659 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:35:24,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-30 06:35:24,669 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;@cc00ca6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:35:24,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:35:24,724 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:35:24,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:35:24,728 INFO L85 PathProgramCache]: Analyzing trace with hash 663546357, now seen corresponding path program 1 times [2022-09-30 06:35:24,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:35:24,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018372419] [2022-09-30 06:35:24,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:35:24,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:35:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:35:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:35:25,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:35:25,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018372419] [2022-09-30 06:35:25,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018372419] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:35:25,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:35:25,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-30 06:35:25,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495775995] [2022-09-30 06:35:25,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:35:25,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-30 06:35:25,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:35:25,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-30 06:35:25,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-09-30 06:35:25,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:25,239 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:35:25,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:35:25,240 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:25,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:35:25,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-30 06:35:25,597 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:35:25,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:35:25,601 INFO L85 PathProgramCache]: Analyzing trace with hash -782415232, now seen corresponding path program 1 times [2022-09-30 06:35:25,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:35:25,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321803086] [2022-09-30 06:35:25,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:35:25,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:35:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:35:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:35:25,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:35:25,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321803086] [2022-09-30 06:35:25,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321803086] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:35:25,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376673177] [2022-09-30 06:35:25,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:35:25,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:35:25,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:35:25,833 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:35:25,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-30 06:35:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:35:25,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 31 conjunts are in the unsatisfiable core [2022-09-30 06:35:25,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:35:25,964 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-30 06:35:26,027 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-30 06:35:26,102 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-30 06:35:26,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-30 06:35:26,142 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-09-30 06:35:26,279 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:35:26,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:35:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:35:37,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376673177] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:35:37,058 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:35:37,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 28 [2022-09-30 06:35:37,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267249097] [2022-09-30 06:35:37,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:35:37,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-09-30 06:35:37,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:35:37,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-09-30 06:35:37,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2022-09-30 06:35:37,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:37,062 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:35:37,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 5.464285714285714) internal successors, (153), 29 states have internal predecessors, (153), 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) [2022-09-30 06:35:37,062 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:35:37,062 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:37,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:35:37,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-30 06:35:37,482 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-09-30 06:35:37,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-30 06:35:37,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-09-30 06:35:37,698 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-09-30 06:35:37,700 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-09-30 06:35:37,704 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:35:37,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:35:37,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:35:37,707 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) [2022-09-30 06:35:37,709 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 [2022-09-30 06:35:37,714 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:35:37,714 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-09-30 06:35:37,715 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;@cc00ca6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:35:37,715 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:35:37,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:35:37,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:35:37,765 INFO L85 PathProgramCache]: Analyzing trace with hash 6285665, now seen corresponding path program 1 times [2022-09-30 06:35:37,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:35:37,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097391800] [2022-09-30 06:35:37,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:35:37,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:35:37,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:35:37,792 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-09-30 06:35:37,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:35:37,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097391800] [2022-09-30 06:35:37,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097391800] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:35:37,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:35:37,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-30 06:35:37,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944313645] [2022-09-30 06:35:37,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:35:37,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-30 06:35:37,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:35:37,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-30 06:35:37,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-30 06:35:37,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:37,795 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:35:37,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.5) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:35:37,795 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:37,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:37,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-30 06:35:37,799 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:35:37,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:35:37,799 INFO L85 PathProgramCache]: Analyzing trace with hash 357085602, now seen corresponding path program 1 times [2022-09-30 06:35:37,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:35:37,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345327056] [2022-09-30 06:35:37,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:35:37,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:35:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:35:37,859 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-09-30 06:35:37,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:35:37,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345327056] [2022-09-30 06:35:37,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345327056] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:35:37,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:35:37,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-30 06:35:37,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414301292] [2022-09-30 06:35:37,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:35:37,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-30 06:35:37,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:35:37,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-30 06:35:37,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-30 06:35:37,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:37,861 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:35:37,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:35:37,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:37,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:37,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:37,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:35:37,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-30 06:35:37,890 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:35:37,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:35:37,890 INFO L85 PathProgramCache]: Analyzing trace with hash 842195245, now seen corresponding path program 1 times [2022-09-30 06:35:37,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:35:37,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297218853] [2022-09-30 06:35:37,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:35:37,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:35:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:35:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-09-30 06:35:37,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:35:37,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297218853] [2022-09-30 06:35:37,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297218853] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:35:37,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162196617] [2022-09-30 06:35:37,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:35:37,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:35:37,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:35:38,020 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:35:38,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-30 06:35:38,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:35:38,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-30 06:35:38,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:35:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-09-30 06:35:38,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:35:38,184 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-09-30 06:35:38,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162196617] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:35:38,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:35:38,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-30 06:35:38,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293336557] [2022-09-30 06:35:38,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:35:38,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-30 06:35:38,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:35:38,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-30 06:35:38,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-30 06:35:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:38,188 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:35:38,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.9) internal successors, (139), 10 states have internal predecessors, (139), 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) [2022-09-30 06:35:38,188 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:38,188 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:35:38,188 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:38,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:38,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:35:38,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-30 06:35:38,258 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-09-30 06:35:38,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-30 06:35:38,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:35:38,475 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-09-30 06:35:38,476 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/3) [2022-09-30 06:35:38,478 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:35:38,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:35:38,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:35:38,483 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) [2022-09-30 06:35:38,484 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 [2022-09-30 06:35:38,487 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:35:38,487 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-09-30 06:35:38,488 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;@cc00ca6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:35:38,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:35:38,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:35:38,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:35:38,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1308839017, now seen corresponding path program 1 times [2022-09-30 06:35:38,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:35:38,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444151819] [2022-09-30 06:35:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:35:38,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:35:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 06:35:38,548 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-30 06:35:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 06:35:38,606 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-30 06:35:38,606 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-30 06:35:38,606 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-09-30 06:35:38,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-30 06:35:38,607 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-09-30 06:35:38,607 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (3/3) [2022-09-30 06:35:38,608 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-30 06:35:38,608 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-09-30 06:35:38,626 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-09-30 06:35:38,630 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:35:38,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:35:38,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:35:38,631 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) [2022-09-30 06:35:38,632 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 [2022-09-30 06:35:38,635 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:35:38,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-30 06:35:38,635 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;@cc00ca6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:35:38,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:35:38,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:35:38,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:35:38,653 INFO L85 PathProgramCache]: Analyzing trace with hash -361914955, now seen corresponding path program 1 times [2022-09-30 06:35:38,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:35:38,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20522203] [2022-09-30 06:35:38,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:35:38,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:35:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:35:38,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:35:38,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:35:38,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20522203] [2022-09-30 06:35:38,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20522203] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:35:38,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:35:38,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-30 06:35:38,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024708718] [2022-09-30 06:35:38,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:35:38,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-30 06:35:38,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:35:38,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-30 06:35:38,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-09-30 06:35:38,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:38,792 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:35:38,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:35:38,792 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:39,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:35:39,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-30 06:35:39,020 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:35:39,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:35:39,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1701988885, now seen corresponding path program 1 times [2022-09-30 06:35:39,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:35:39,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013494551] [2022-09-30 06:35:39,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:35:39,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:35:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:35:39,203 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:35:39,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:35:39,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013494551] [2022-09-30 06:35:39,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013494551] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:35:39,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214954075] [2022-09-30 06:35:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:35:39,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:35:39,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:35:39,206 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:35:39,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-30 06:35:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:35:39,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 31 conjunts are in the unsatisfiable core [2022-09-30 06:35:39,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:35:39,273 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-30 06:35:39,288 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-30 06:35:39,319 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-30 06:35:39,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-30 06:35:39,338 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-09-30 06:35:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:35:39,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:35:48,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:35:48,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214954075] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:35:48,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:35:48,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 28 [2022-09-30 06:35:48,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145513168] [2022-09-30 06:35:48,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:35:48,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-09-30 06:35:48,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:35:48,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-09-30 06:35:48,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2022-09-30 06:35:48,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:48,025 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:35:48,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 5.464285714285714) internal successors, (153), 29 states have internal predecessors, (153), 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) [2022-09-30 06:35:48,025 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:35:48,025 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:48,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:35:48,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-30 06:35:48,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-09-30 06:35:48,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-30 06:35:48,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:35:48,929 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-09-30 06:35:48,929 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-09-30 06:35:48,932 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:35:48,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:35:48,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:35:48,933 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 06:35:48,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (9)] Waiting until timeout for monitored process [2022-09-30 06:35:48,937 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:35:48,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-09-30 06:35:48,937 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;@cc00ca6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:35:48,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:35:48,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:35:48,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:35:48,972 INFO L85 PathProgramCache]: Analyzing trace with hash -830248606, now seen corresponding path program 1 times [2022-09-30 06:35:48,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:35:48,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776348960] [2022-09-30 06:35:48,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:35:48,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:35:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 06:35:48,995 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-30 06:35:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 06:35:49,024 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-30 06:35:49,024 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-30 06:35:49,024 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-09-30 06:35:49,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-30 06:35:49,025 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-09-30 06:35:49,025 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/3) [2022-09-30 06:35:49,025 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-30 06:35:49,025 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-09-30 06:35:49,044 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-09-30 06:35:49,046 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:35:49,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:35:49,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:35:49,075 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 06:35:49,095 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:35:49,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-30 06:35:49,095 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;@cc00ca6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:35:49,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:35:49,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process [2022-09-30 06:35:49,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:35:49,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:35:49,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1576544373, now seen corresponding path program 1 times [2022-09-30 06:35:49,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:35:49,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229506100] [2022-09-30 06:35:49,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:35:49,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:35:49,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:35:49,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:35:49,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:35:49,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229506100] [2022-09-30 06:35:49,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229506100] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:35:49,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:35:49,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-30 06:35:49,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309638413] [2022-09-30 06:35:49,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:35:49,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-30 06:35:49,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:35:49,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-30 06:35:49,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-09-30 06:35:49,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:49,263 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:35:49,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:35:49,263 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:49,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:35:49,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-30 06:35:49,491 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:35:49,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:35:49,491 INFO L85 PathProgramCache]: Analyzing trace with hash -659274326, now seen corresponding path program 1 times [2022-09-30 06:35:49,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:35:49,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277694340] [2022-09-30 06:35:49,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:35:49,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:35:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:35:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:35:49,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:35:49,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277694340] [2022-09-30 06:35:49,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277694340] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:35:49,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904282903] [2022-09-30 06:35:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:35:49,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:35:49,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:35:49,708 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:35:49,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-30 06:35:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:35:49,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 31 conjunts are in the unsatisfiable core [2022-09-30 06:35:49,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:35:49,780 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-30 06:35:49,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-30 06:35:49,833 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-30 06:35:49,833 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-30 06:35:49,854 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-09-30 06:35:49,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:35:49,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:35:56,554 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:35:56,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904282903] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:35:56,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:35:56,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 28 [2022-09-30 06:35:56,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446401847] [2022-09-30 06:35:56,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:35:56,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-09-30 06:35:56,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:35:56,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-09-30 06:35:56,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2022-09-30 06:35:56,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:56,556 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:35:56,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 5.464285714285714) internal successors, (153), 29 states have internal predecessors, (153), 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) [2022-09-30 06:35:56,556 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:35:56,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:35:57,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:35:57,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-09-30 06:35:57,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-09-30 06:35:57,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-09-30 06:35:57,256 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:35:57,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:35:57,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1361615767, now seen corresponding path program 1 times [2022-09-30 06:35:57,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:35:57,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530990928] [2022-09-30 06:35:57,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:35:57,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:35:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:35:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:35:57,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:35:57,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530990928] [2022-09-30 06:35:57,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530990928] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:35:57,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225342691] [2022-09-30 06:35:57,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:35:57,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:35:57,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:35:57,532 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:35:57,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-30 06:35:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:35:57,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 41 conjunts are in the unsatisfiable core [2022-09-30 06:35:57,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:35:57,609 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-30 06:35:57,624 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-30 06:35:57,652 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-30 06:35:57,652 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-30 06:35:57,672 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-09-30 06:35:58,071 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:35:58,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:36:00,903 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:36:00,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225342691] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:36:00,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:36:00,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 41 [2022-09-30 06:36:00,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784420484] [2022-09-30 06:36:00,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:36:00,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-09-30 06:36:00,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:36:00,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-09-30 06:36:00,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1536, Unknown=0, NotChecked=0, Total=1722 [2022-09-30 06:36:00,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:00,909 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:36:00,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 6.365853658536586) internal successors, (261), 42 states have internal predecessors, (261), 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) [2022-09-30 06:36:00,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:36:00,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2022-09-30 06:36:00,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:03,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:36:03,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-09-30 06:36:03,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-09-30 06:36:03,990 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-09-30 06:36:04,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-09-30 06:36:04,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-09-30 06:36:04,213 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-09-30 06:36:04,216 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-09-30 06:36:04,224 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:36:04,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:36:04,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:36:04,225 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 06:36:04,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (13)] Waiting until timeout for monitored process [2022-09-30 06:36:04,230 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:36:04,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-09-30 06:36:04,231 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;@cc00ca6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:36:04,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:36:04,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:36:04,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:36:04,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2052940416, now seen corresponding path program 1 times [2022-09-30 06:36:04,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:36:04,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896826831] [2022-09-30 06:36:04,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:36:04,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:36:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:36:04,307 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-09-30 06:36:04,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:36:04,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896826831] [2022-09-30 06:36:04,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896826831] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:36:04,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:36:04,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-30 06:36:04,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775664257] [2022-09-30 06:36:04,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:36:04,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-30 06:36:04,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:36:04,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-30 06:36:04,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-30 06:36:04,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:04,309 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:36:04,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.5) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:36:04,310 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:04,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:04,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-30 06:36:04,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:36:04,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:36:04,317 INFO L85 PathProgramCache]: Analyzing trace with hash -937633151, now seen corresponding path program 1 times [2022-09-30 06:36:04,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:36:04,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248323435] [2022-09-30 06:36:04,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:36:04,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:36:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:36:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-09-30 06:36:04,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:36:04,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248323435] [2022-09-30 06:36:04,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248323435] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:36:04,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:36:04,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-30 06:36:04,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219426178] [2022-09-30 06:36:04,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:36:04,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-30 06:36:04,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:36:04,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-30 06:36:04,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-30 06:36:04,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:04,341 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:36:04,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:36:04,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:04,341 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:04,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:04,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:36:04,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-30 06:36:04,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:36:04,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:36:04,372 INFO L85 PathProgramCache]: Analyzing trace with hash 766385014, now seen corresponding path program 1 times [2022-09-30 06:36:04,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:36:04,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453999601] [2022-09-30 06:36:04,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:36:04,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:36:04,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:36:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-09-30 06:36:04,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:36:04,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453999601] [2022-09-30 06:36:04,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453999601] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:36:04,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452876018] [2022-09-30 06:36:04,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:36:04,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:36:04,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:36:04,404 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:36:04,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-09-30 06:36:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:36:04,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-30 06:36:04,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:36:04,522 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-09-30 06:36:04,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:36:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-09-30 06:36:04,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452876018] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:36:04,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:36:04,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-09-30 06:36:04,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862948547] [2022-09-30 06:36:04,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:36:04,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-30 06:36:04,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:36:04,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-30 06:36:04,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-09-30 06:36:04,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:04,560 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:36:04,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 10 states have internal predecessors, (141), 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) [2022-09-30 06:36:04,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:04,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:36:04,560 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:04,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:04,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:36:04,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-30 06:36:04,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-09-30 06:36:04,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-30 06:36:04,867 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:36:04,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:36:04,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1114423075, now seen corresponding path program 1 times [2022-09-30 06:36:04,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:36:04,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291207443] [2022-09-30 06:36:04,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:36:04,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:36:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:36:05,027 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-09-30 06:36:05,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:36:05,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291207443] [2022-09-30 06:36:05,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291207443] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:36:05,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118841146] [2022-09-30 06:36:05,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:36:05,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:36:05,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:36:05,038 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:36:05,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-09-30 06:36:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:36:05,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-30 06:36:05,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:36:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-09-30 06:36:05,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:36:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-09-30 06:36:05,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118841146] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:36:05,298 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:36:05,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-09-30 06:36:05,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863062707] [2022-09-30 06:36:05,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:36:05,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-30 06:36:05,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:36:05,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-30 06:36:05,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2022-09-30 06:36:05,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:05,299 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:36:05,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.421052631578947) internal successors, (236), 19 states have internal predecessors, (236), 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) [2022-09-30 06:36:05,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:05,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:36:05,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2022-09-30 06:36:05,300 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:07,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:07,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-30 06:36:07,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-30 06:36:07,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-30 06:36:07,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-09-30 06:36:07,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-09-30 06:36:07,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:36:07,748 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-09-30 06:36:07,748 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/3) [2022-09-30 06:36:07,750 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:36:07,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:36:07,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:36:07,756 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 06:36:07,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (16)] Waiting until timeout for monitored process [2022-09-30 06:36:07,762 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:36:07,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-09-30 06:36:07,763 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;@cc00ca6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:36:07,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:36:07,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:36:07,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:36:07,805 INFO L85 PathProgramCache]: Analyzing trace with hash -395450856, now seen corresponding path program 1 times [2022-09-30 06:36:07,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:36:07,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630842061] [2022-09-30 06:36:07,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:36:07,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:36:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 06:36:07,854 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-30 06:36:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 06:36:07,908 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-30 06:36:07,909 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-30 06:36:07,909 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-09-30 06:36:07,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-30 06:36:07,910 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-09-30 06:36:07,911 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (3/3) [2022-09-30 06:36:07,912 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-30 06:36:07,912 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-09-30 06:36:07,942 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-09-30 06:36:07,945 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:36:07,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:36:07,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:36:07,947 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 06:36:07,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (17)] Waiting until timeout for monitored process [2022-09-30 06:36:07,960 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:36:07,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-30 06:36:07,961 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;@cc00ca6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:36:07,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:36:07,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:36:07,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:36:07,972 INFO L85 PathProgramCache]: Analyzing trace with hash -173803595, now seen corresponding path program 1 times [2022-09-30 06:36:07,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:36:07,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331165742] [2022-09-30 06:36:07,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:36:07,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:36:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:36:08,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:36:08,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:36:08,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331165742] [2022-09-30 06:36:08,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331165742] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:36:08,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:36:08,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-30 06:36:08,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937378030] [2022-09-30 06:36:08,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:36:08,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-30 06:36:08,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:36:08,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-30 06:36:08,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-09-30 06:36:08,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:08,134 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:36:08,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:36:08,134 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:08,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:36:08,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-30 06:36:08,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:36:08,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:36:08,341 INFO L85 PathProgramCache]: Analyzing trace with hash 907707199, now seen corresponding path program 1 times [2022-09-30 06:36:08,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:36:08,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552208650] [2022-09-30 06:36:08,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:36:08,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:36:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:36:08,515 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:36:08,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:36:08,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552208650] [2022-09-30 06:36:08,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552208650] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:36:08,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139896615] [2022-09-30 06:36:08,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:36:08,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:36:08,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:36:08,517 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:36:08,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-09-30 06:36:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:36:08,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 31 conjunts are in the unsatisfiable core [2022-09-30 06:36:08,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:36:08,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-30 06:36:08,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-30 06:36:08,851 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-30 06:36:08,851 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-30 06:36:08,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-09-30 06:36:08,993 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:36:08,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:36:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:36:17,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139896615] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:36:17,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:36:17,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 28 [2022-09-30 06:36:17,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661836304] [2022-09-30 06:36:17,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:36:17,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-09-30 06:36:17,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:36:17,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-09-30 06:36:17,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2022-09-30 06:36:17,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:17,537 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:36:17,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 5.464285714285714) internal successors, (153), 29 states have internal predecessors, (153), 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) [2022-09-30 06:36:17,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:36:17,537 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:18,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:36:18,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-09-30 06:36:18,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-09-30 06:36:18,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:36:18,231 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:36:18,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:36:18,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1303438358, now seen corresponding path program 1 times [2022-09-30 06:36:18,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:36:18,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055843950] [2022-09-30 06:36:18,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:36:18,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:36:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:36:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:36:18,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:36:18,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055843950] [2022-09-30 06:36:18,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055843950] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:36:18,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269506326] [2022-09-30 06:36:18,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:36:18,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:36:18,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:36:18,522 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:36:18,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-09-30 06:36:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:36:18,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 41 conjunts are in the unsatisfiable core [2022-09-30 06:36:18,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:36:18,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-30 06:36:18,630 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-30 06:36:18,684 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-30 06:36:18,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-30 06:36:18,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-09-30 06:36:19,046 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:36:19,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:36:23,677 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:36:23,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269506326] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:36:23,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:36:23,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 41 [2022-09-30 06:36:23,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883295794] [2022-09-30 06:36:23,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:36:23,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-09-30 06:36:23,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:36:23,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-09-30 06:36:23,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1536, Unknown=0, NotChecked=0, Total=1722 [2022-09-30 06:36:23,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:36:23,679 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:36:23,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 6.365853658536586) internal successors, (261), 42 states have internal predecessors, (261), 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) [2022-09-30 06:36:23,680 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:36:23,680 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2022-09-30 06:36:23,680 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:37:05,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:37:05,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-09-30 06:37:05,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-30 06:37:05,699 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining) [2022-09-30 06:37:05,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-09-30 06:37:05,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:37:05,915 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-09-30 06:37:05,916 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT was SAFE (1/3) [2022-09-30 06:37:05,919 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:37:05,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:37:05,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:37:05,924 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 06:37:05,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (20)] Waiting until timeout for monitored process [2022-09-30 06:37:05,933 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:37:05,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2022-09-30 06:37:05,933 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;@cc00ca6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:37:05,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:37:05,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-30 06:37:05,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:37:05,972 INFO L85 PathProgramCache]: Analyzing trace with hash 401769913, now seen corresponding path program 1 times [2022-09-30 06:37:05,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:37:05,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386223937] [2022-09-30 06:37:05,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:37:05,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:37:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 06:37:06,003 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-30 06:37:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-30 06:37:06,039 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-30 06:37:06,039 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-30 06:37:06,040 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2022-09-30 06:37:06,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-30 06:37:06,040 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-09-30 06:37:06,040 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/3) [2022-09-30 06:37:06,040 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-09-30 06:37:06,040 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-09-30 06:37:06,062 INFO L144 ThreadInstanceAdder]: Constructed 20 joinOtherThreadTransitions. [2022-09-30 06:37:06,068 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-09-30 06:37:06,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2022-09-30 06:37:06,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:37:06,070 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2022-09-30 06:37:06,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (21)] Waiting until timeout for monitored process [2022-09-30 06:37:06,074 INFO L158 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2022-09-30 06:37:06,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ======== [2022-09-30 06:37:06,074 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;@cc00ca6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-30 06:37:06,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-09-30 06:37:06,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:37:06,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:37:06,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2128351733, now seen corresponding path program 1 times [2022-09-30 06:37:06,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:37:06,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225742558] [2022-09-30 06:37:06,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:37:06,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:37:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:37:06,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:37:06,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:37:06,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225742558] [2022-09-30 06:37:06,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225742558] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-30 06:37:06,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-30 06:37:06,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-30 06:37:06,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493237454] [2022-09-30 06:37:06,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-30 06:37:06,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-30 06:37:06,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:37:06,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-30 06:37:06,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-09-30 06:37:06,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:37:06,266 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:37:06,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-30 06:37:06,266 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:37:06,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:37:06,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-30 06:37:06,503 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:37:06,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:37:06,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1673589548, now seen corresponding path program 1 times [2022-09-30 06:37:06,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:37:06,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775505132] [2022-09-30 06:37:06,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:37:06,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:37:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:37:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:37:06,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:37:06,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775505132] [2022-09-30 06:37:06,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775505132] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:37:06,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602056549] [2022-09-30 06:37:06,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:37:06,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:37:06,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:37:06,701 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:37:06,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-09-30 06:37:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:37:06,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 31 conjunts are in the unsatisfiable core [2022-09-30 06:37:06,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:37:06,789 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-30 06:37:06,804 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-30 06:37:06,835 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-30 06:37:06,836 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-30 06:37:06,856 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-09-30 06:37:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:37:06,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:37:07,432 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:37:07,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602056549] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:37:07,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:37:07,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 28 [2022-09-30 06:37:07,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630647620] [2022-09-30 06:37:07,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:37:07,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-09-30 06:37:07,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:37:07,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-09-30 06:37:07,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2022-09-30 06:37:07,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:37:07,435 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:37:07,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 5.464285714285714) internal successors, (153), 29 states have internal predecessors, (153), 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) [2022-09-30 06:37:07,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:37:07,436 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:37:07,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:37:07,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-09-30 06:37:07,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-09-30 06:37:08,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-09-30 06:37:08,032 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] === [2022-09-30 06:37:08,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-30 06:37:08,033 INFO L85 PathProgramCache]: Analyzing trace with hash -99566955, now seen corresponding path program 1 times [2022-09-30 06:37:08,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-30 06:37:08,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655825556] [2022-09-30 06:37:08,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:37:08,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-30 06:37:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:37:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:37:08,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-30 06:37:08,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655825556] [2022-09-30 06:37:08,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655825556] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-30 06:37:08,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893041157] [2022-09-30 06:37:08,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-30 06:37:08,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-30 06:37:08,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-30 06:37:08,499 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-30 06:37:08,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-09-30 06:37:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-30 06:37:08,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 41 conjunts are in the unsatisfiable core [2022-09-30 06:37:08,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-30 06:37:08,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-30 06:37:08,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-30 06:37:08,624 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-30 06:37:08,625 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-30 06:37:08,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-09-30 06:37:08,917 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:37:08,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-30 06:37:12,934 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-30 06:37:12,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893041157] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-30 06:37:12,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-30 06:37:12,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 41 [2022-09-30 06:37:12,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782244064] [2022-09-30 06:37:12,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-30 06:37:12,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-09-30 06:37:12,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-30 06:37:12,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-09-30 06:37:12,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1536, Unknown=0, NotChecked=0, Total=1722 [2022-09-30 06:37:12,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-30 06:37:12,937 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2022-09-30 06:37:12,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 6.365853658536586) internal successors, (261), 42 states have internal predecessors, (261), 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) [2022-09-30 06:37:12,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2022-09-30 06:37:12,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2022-09-30 06:37:12,938 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.