/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true -i ../../../trunk/examples/svcomp/pthread/stack_longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 14:47:07,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 14:47:07,255 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-12-09 14:47:07,279 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 14:47:07,279 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 14:47:07,280 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 14:47:07,280 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 14:47:07,280 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 14:47:07,281 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 14:47:07,284 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 14:47:07,284 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 14:47:07,284 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 14:47:07,284 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 14:47:07,285 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 14:47:07,285 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 14:47:07,286 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 14:47:07,286 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 14:47:07,286 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 14:47:07,286 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 14:47:07,286 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 14:47:07,286 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 14:47:07,287 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 14:47:07,287 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 14:47:07,287 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 14:47:07,287 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 14:47:07,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:47:07,287 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 14:47:07,288 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 14:47:07,288 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 14:47:07,288 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 14:47:07,288 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 14:47:07,289 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 14:47:07,289 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 14:47:07,289 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 14:47:07,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 14:47:07,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 14:47:07,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 14:47:07,514 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 14:47:07,515 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 14:47:07,516 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longer-2.i [2023-12-09 14:47:08,529 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 14:47:08,757 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 14:47:08,758 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i [2023-12-09 14:47:08,774 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fad72badc/2fd475af384f45a7803d6a7ecf23cbfb/FLAGb6b2fca72 [2023-12-09 14:47:08,787 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fad72badc/2fd475af384f45a7803d6a7ecf23cbfb [2023-12-09 14:47:08,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 14:47:08,790 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 14:47:08,792 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 14:47:08,792 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 14:47:08,796 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 14:47:08,797 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:47:08" (1/1) ... [2023-12-09 14:47:08,798 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@231d308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:08, skipping insertion in model container [2023-12-09 14:47:08,799 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:47:08" (1/1) ... [2023-12-09 14:47:08,846 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 14:47:09,143 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i[41529,41542] [2023-12-09 14:47:09,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:47:09,176 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 14:47:09,216 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longer-2.i[41529,41542] [2023-12-09 14:47:09,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 14:47:09,276 INFO L206 MainTranslator]: Completed translation [2023-12-09 14:47:09,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09 WrapperNode [2023-12-09 14:47:09,277 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 14:47:09,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 14:47:09,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 14:47:09,278 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 14:47:09,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,300 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,326 INFO L138 Inliner]: procedures = 278, calls = 40, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 154 [2023-12-09 14:47:09,326 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 14:47:09,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 14:47:09,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 14:47:09,327 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 14:47:09,333 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,333 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,335 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,335 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,340 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,361 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 14:47:09,362 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 14:47:09,362 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 14:47:09,362 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 14:47:09,363 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (1/1) ... [2023-12-09 14:47:09,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 14:47:09,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:09,437 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) [2023-12-09 14:47:09,439 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 [2023-12-09 14:47:09,465 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-12-09 14:47:09,466 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-12-09 14:47:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-12-09 14:47:09,466 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-12-09 14:47:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 14:47:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 14:47:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-09 14:47:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 14:47:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 14:47:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-09 14:47:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 14:47:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 14:47:09,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 14:47:09,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 14:47:09,467 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 14:47:09,572 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 14:47:09,573 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 14:47:09,763 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 14:47:09,788 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 14:47:09,788 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-09 14:47:09,789 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:47:09 BoogieIcfgContainer [2023-12-09 14:47:09,789 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 14:47:09,791 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 14:47:09,791 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 14:47:09,793 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 14:47:09,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:47:08" (1/3) ... [2023-12-09 14:47:09,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77666643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:47:09, skipping insertion in model container [2023-12-09 14:47:09,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:47:09" (2/3) ... [2023-12-09 14:47:09,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77666643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:47:09, skipping insertion in model container [2023-12-09 14:47:09,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:47:09" (3/3) ... [2023-12-09 14:47:09,794 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2023-12-09 14:47:09,805 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 14:47:09,805 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-09 14:47:09,805 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 14:47:09,923 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 14:47:09,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 161 transitions, 336 flow [2023-12-09 14:47:10,007 INFO L124 PetriNetUnfolderBase]: 10/159 cut-off events. [2023-12-09 14:47:10,007 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 14:47:10,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 159 events. 10/159 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 383 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 121. Up to 3 conditions per place. [2023-12-09 14:47:10,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 161 transitions, 336 flow [2023-12-09 14:47:10,021 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 149 transitions, 307 flow [2023-12-09 14:47:10,027 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 14:47:10,031 INFO L362 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@d8421e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 14:47:10,031 INFO L363 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-12-09 14:47:10,063 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 14:47:10,063 INFO L124 PetriNetUnfolderBase]: 5/120 cut-off events. [2023-12-09 14:47:10,063 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-12-09 14:47:10,063 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:10,064 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:10,064 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:10,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:10,067 INFO L85 PathProgramCache]: Analyzing trace with hash 660455964, now seen corresponding path program 1 times [2023-12-09 14:47:10,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:10,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634542049] [2023-12-09 14:47:10,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:10,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:10,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:10,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:10,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634542049] [2023-12-09 14:47:10,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634542049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:10,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:10,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 14:47:10,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762027754] [2023-12-09 14:47:10,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:10,385 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 14:47:10,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:10,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 14:47:10,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 14:47:10,410 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 161 [2023-12-09 14:47:10,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 149 transitions, 307 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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) [2023-12-09 14:47:10,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:10,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 161 [2023-12-09 14:47:10,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:10,662 INFO L124 PetriNetUnfolderBase]: 152/997 cut-off events. [2023-12-09 14:47:10,662 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-12-09 14:47:10,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 997 events. 152/997 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5321 event pairs, 54 based on Foata normal form. 96/1007 useless extension candidates. Maximal degree in co-relation 1145. Up to 181 conditions per place. [2023-12-09 14:47:10,683 INFO L140 encePairwiseOnDemand]: 151/161 looper letters, 28 selfloop transitions, 3 changer transitions 0/151 dead transitions. [2023-12-09 14:47:10,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 151 transitions, 379 flow [2023-12-09 14:47:10,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 14:47:10,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 14:47:10,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2023-12-09 14:47:10,698 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9151138716356108 [2023-12-09 14:47:10,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2023-12-09 14:47:10,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2023-12-09 14:47:10,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:10,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2023-12-09 14:47:10,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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) [2023-12-09 14:47:10,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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) [2023-12-09 14:47:10,708 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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) [2023-12-09 14:47:10,710 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, -2 predicate places. [2023-12-09 14:47:10,710 INFO L500 AbstractCegarLoop]: Abstraction has has 144 places, 151 transitions, 379 flow [2023-12-09 14:47:10,711 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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) [2023-12-09 14:47:10,711 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:10,711 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:10,711 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 14:47:10,711 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:10,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:10,712 INFO L85 PathProgramCache]: Analyzing trace with hash 671292220, now seen corresponding path program 1 times [2023-12-09 14:47:10,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:10,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033131911] [2023-12-09 14:47:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:10,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:10,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:10,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:10,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033131911] [2023-12-09 14:47:10,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033131911] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:10,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:10,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 14:47:10,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137907757] [2023-12-09 14:47:10,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:10,913 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 14:47:10,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:10,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 14:47:10,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-09 14:47:10,915 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 161 [2023-12-09 14:47:10,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 151 transitions, 379 flow. Second operand has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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) [2023-12-09 14:47:10,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:10,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 161 [2023-12-09 14:47:10,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:11,128 INFO L124 PetriNetUnfolderBase]: 297/1541 cut-off events. [2023-12-09 14:47:11,128 INFO L125 PetriNetUnfolderBase]: For 404/438 co-relation queries the response was YES. [2023-12-09 14:47:11,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2478 conditions, 1541 events. 297/1541 cut-off events. For 404/438 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 9736 event pairs, 86 based on Foata normal form. 5/1412 useless extension candidates. Maximal degree in co-relation 2155. Up to 310 conditions per place. [2023-12-09 14:47:11,138 INFO L140 encePairwiseOnDemand]: 156/161 looper letters, 39 selfloop transitions, 4 changer transitions 0/172 dead transitions. [2023-12-09 14:47:11,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 172 transitions, 551 flow [2023-12-09 14:47:11,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-09 14:47:11,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-12-09 14:47:11,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 579 transitions. [2023-12-09 14:47:11,142 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8990683229813664 [2023-12-09 14:47:11,142 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 579 transitions. [2023-12-09 14:47:11,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 579 transitions. [2023-12-09 14:47:11,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:11,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 579 transitions. [2023-12-09 14:47:11,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.75) internal successors, (579), 4 states have internal predecessors, (579), 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) [2023-12-09 14:47:11,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 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) [2023-12-09 14:47:11,149 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 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) [2023-12-09 14:47:11,149 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 1 predicate places. [2023-12-09 14:47:11,150 INFO L500 AbstractCegarLoop]: Abstraction has has 147 places, 172 transitions, 551 flow [2023-12-09 14:47:11,150 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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) [2023-12-09 14:47:11,150 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:11,150 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:11,150 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 14:47:11,150 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:11,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:11,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1386531267, now seen corresponding path program 1 times [2023-12-09 14:47:11,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:11,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000642976] [2023-12-09 14:47:11,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:11,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:11,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:11,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:11,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000642976] [2023-12-09 14:47:11,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000642976] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:11,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:11,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 14:47:11,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233489404] [2023-12-09 14:47:11,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:11,390 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 14:47:11,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:11,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 14:47:11,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 14:47:11,392 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 161 [2023-12-09 14:47:11,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 172 transitions, 551 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2023-12-09 14:47:11,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:11,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 161 [2023-12-09 14:47:11,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:11,491 INFO L124 PetriNetUnfolderBase]: 71/670 cut-off events. [2023-12-09 14:47:11,491 INFO L125 PetriNetUnfolderBase]: For 552/560 co-relation queries the response was YES. [2023-12-09 14:47:11,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 670 events. 71/670 cut-off events. For 552/560 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3286 event pairs, 1 based on Foata normal form. 46/674 useless extension candidates. Maximal degree in co-relation 818. Up to 103 conditions per place. [2023-12-09 14:47:11,495 INFO L140 encePairwiseOnDemand]: 157/161 looper letters, 22 selfloop transitions, 14 changer transitions 1/173 dead transitions. [2023-12-09 14:47:11,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 173 transitions, 652 flow [2023-12-09 14:47:11,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 14:47:11,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 14:47:11,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-12-09 14:47:11,532 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9006211180124224 [2023-12-09 14:47:11,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-12-09 14:47:11,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-12-09 14:47:11,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:11,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-12-09 14:47:11,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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) [2023-12-09 14:47:11,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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) [2023-12-09 14:47:11,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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) [2023-12-09 14:47:11,538 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 3 predicate places. [2023-12-09 14:47:11,538 INFO L500 AbstractCegarLoop]: Abstraction has has 149 places, 173 transitions, 652 flow [2023-12-09 14:47:11,538 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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) [2023-12-09 14:47:11,538 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:11,538 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:11,538 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 14:47:11,539 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:11,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:11,539 INFO L85 PathProgramCache]: Analyzing trace with hash 187243038, now seen corresponding path program 1 times [2023-12-09 14:47:11,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:11,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649237486] [2023-12-09 14:47:11,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:11,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:11,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:11,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:11,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:11,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649237486] [2023-12-09 14:47:11,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649237486] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:11,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:11,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 14:47:11,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218240484] [2023-12-09 14:47:11,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:11,656 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 14:47:11,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:11,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 14:47:11,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 14:47:11,658 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 161 [2023-12-09 14:47:11,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 173 transitions, 652 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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) [2023-12-09 14:47:11,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:11,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 161 [2023-12-09 14:47:11,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:11,769 INFO L124 PetriNetUnfolderBase]: 68/658 cut-off events. [2023-12-09 14:47:11,769 INFO L125 PetriNetUnfolderBase]: For 618/630 co-relation queries the response was YES. [2023-12-09 14:47:11,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1293 conditions, 658 events. 68/658 cut-off events. For 618/630 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2896 event pairs, 7 based on Foata normal form. 0/621 useless extension candidates. Maximal degree in co-relation 957. Up to 128 conditions per place. [2023-12-09 14:47:11,784 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 50 selfloop transitions, 4 changer transitions 0/177 dead transitions. [2023-12-09 14:47:11,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 177 transitions, 790 flow [2023-12-09 14:47:11,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 14:47:11,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 14:47:11,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-12-09 14:47:11,791 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8923395445134575 [2023-12-09 14:47:11,791 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-12-09 14:47:11,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-12-09 14:47:11,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:11,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-12-09 14:47:11,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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) [2023-12-09 14:47:11,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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) [2023-12-09 14:47:11,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 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) [2023-12-09 14:47:11,796 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 3 predicate places. [2023-12-09 14:47:11,797 INFO L500 AbstractCegarLoop]: Abstraction has has 149 places, 177 transitions, 790 flow [2023-12-09 14:47:11,797 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 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) [2023-12-09 14:47:11,797 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:11,797 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:11,797 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 14:47:11,798 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:11,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:11,798 INFO L85 PathProgramCache]: Analyzing trace with hash -919895656, now seen corresponding path program 1 times [2023-12-09 14:47:11,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:11,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845988546] [2023-12-09 14:47:11,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:11,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:12,067 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:12,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:12,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845988546] [2023-12-09 14:47:12,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845988546] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:12,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690256601] [2023-12-09 14:47:12,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:12,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:12,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:12,083 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:47:12,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 14:47:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:12,217 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 14:47:12,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:12,366 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:12,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:12,469 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:12,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690256601] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:12,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:12,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-12-09 14:47:12,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41292551] [2023-12-09 14:47:12,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:12,472 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-09 14:47:12,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:12,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-09 14:47:12,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-09 14:47:12,477 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 161 [2023-12-09 14:47:12,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 177 transitions, 790 flow. Second operand has 10 states, 10 states have (on average 133.4) internal successors, (1334), 10 states have internal predecessors, (1334), 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) [2023-12-09 14:47:12,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:12,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 161 [2023-12-09 14:47:12,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:12,747 INFO L124 PetriNetUnfolderBase]: 130/1137 cut-off events. [2023-12-09 14:47:12,748 INFO L125 PetriNetUnfolderBase]: For 1722/1752 co-relation queries the response was YES. [2023-12-09 14:47:12,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2656 conditions, 1137 events. 130/1137 cut-off events. For 1722/1752 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5786 event pairs, 4 based on Foata normal form. 0/1077 useless extension candidates. Maximal degree in co-relation 2013. Up to 261 conditions per place. [2023-12-09 14:47:12,756 INFO L140 encePairwiseOnDemand]: 153/161 looper letters, 103 selfloop transitions, 16 changer transitions 4/243 dead transitions. [2023-12-09 14:47:12,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 243 transitions, 1598 flow [2023-12-09 14:47:12,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-09 14:47:12,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-12-09 14:47:12,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1646 transitions. [2023-12-09 14:47:12,760 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8519668737060041 [2023-12-09 14:47:12,760 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1646 transitions. [2023-12-09 14:47:12,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1646 transitions. [2023-12-09 14:47:12,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:12,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1646 transitions. [2023-12-09 14:47:12,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 137.16666666666666) internal successors, (1646), 12 states have internal predecessors, (1646), 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) [2023-12-09 14:47:12,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 161.0) internal successors, (2093), 13 states have internal predecessors, (2093), 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) [2023-12-09 14:47:12,771 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 161.0) internal successors, (2093), 13 states have internal predecessors, (2093), 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) [2023-12-09 14:47:12,773 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 14 predicate places. [2023-12-09 14:47:12,774 INFO L500 AbstractCegarLoop]: Abstraction has has 160 places, 243 transitions, 1598 flow [2023-12-09 14:47:12,775 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 133.4) internal successors, (1334), 10 states have internal predecessors, (1334), 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) [2023-12-09 14:47:12,777 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:12,778 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:12,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-09 14:47:12,998 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:12,999 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:12,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:12,999 INFO L85 PathProgramCache]: Analyzing trace with hash 516095470, now seen corresponding path program 1 times [2023-12-09 14:47:13,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:13,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052898653] [2023-12-09 14:47:13,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:13,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:14,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:14,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052898653] [2023-12-09 14:47:14,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052898653] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:14,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:14,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-09 14:47:14,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949403389] [2023-12-09 14:47:14,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:14,098 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-09 14:47:14,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:14,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-09 14:47:14,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2023-12-09 14:47:14,100 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 161 [2023-12-09 14:47:14,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 243 transitions, 1598 flow. Second operand has 22 states, 22 states have (on average 87.5) internal successors, (1925), 22 states have internal predecessors, (1925), 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) [2023-12-09 14:47:14,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:14,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 161 [2023-12-09 14:47:14,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:16,134 INFO L124 PetriNetUnfolderBase]: 1162/4589 cut-off events. [2023-12-09 14:47:16,135 INFO L125 PetriNetUnfolderBase]: For 9919/10101 co-relation queries the response was YES. [2023-12-09 14:47:16,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12204 conditions, 4589 events. 1162/4589 cut-off events. For 9919/10101 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 35458 event pairs, 225 based on Foata normal form. 4/4364 useless extension candidates. Maximal degree in co-relation 9105. Up to 1280 conditions per place. [2023-12-09 14:47:16,164 INFO L140 encePairwiseOnDemand]: 137/161 looper letters, 261 selfloop transitions, 27 changer transitions 51/462 dead transitions. [2023-12-09 14:47:16,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 462 transitions, 3919 flow [2023-12-09 14:47:16,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-09 14:47:16,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-12-09 14:47:16,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2342 transitions. [2023-12-09 14:47:16,169 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5818633540372671 [2023-12-09 14:47:16,169 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2342 transitions. [2023-12-09 14:47:16,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2342 transitions. [2023-12-09 14:47:16,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:16,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2342 transitions. [2023-12-09 14:47:16,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 93.68) internal successors, (2342), 25 states have internal predecessors, (2342), 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) [2023-12-09 14:47:16,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 161.0) internal successors, (4186), 26 states have internal predecessors, (4186), 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) [2023-12-09 14:47:16,178 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 161.0) internal successors, (4186), 26 states have internal predecessors, (4186), 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) [2023-12-09 14:47:16,179 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 38 predicate places. [2023-12-09 14:47:16,179 INFO L500 AbstractCegarLoop]: Abstraction has has 184 places, 462 transitions, 3919 flow [2023-12-09 14:47:16,192 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 87.5) internal successors, (1925), 22 states have internal predecessors, (1925), 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) [2023-12-09 14:47:16,192 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:16,192 INFO L233 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:16,192 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-09 14:47:16,193 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:16,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:16,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1950483508, now seen corresponding path program 2 times [2023-12-09 14:47:16,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:16,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183489013] [2023-12-09 14:47:16,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:16,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:17,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:17,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183489013] [2023-12-09 14:47:17,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183489013] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:17,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:17,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2023-12-09 14:47:17,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564329774] [2023-12-09 14:47:17,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:17,072 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-09 14:47:17,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:17,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-09 14:47:17,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2023-12-09 14:47:17,074 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 161 [2023-12-09 14:47:17,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 462 transitions, 3919 flow. Second operand has 22 states, 22 states have (on average 87.5) internal successors, (1925), 22 states have internal predecessors, (1925), 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) [2023-12-09 14:47:17,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:17,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 161 [2023-12-09 14:47:17,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:19,190 INFO L124 PetriNetUnfolderBase]: 1577/6277 cut-off events. [2023-12-09 14:47:19,190 INFO L125 PetriNetUnfolderBase]: For 15631/16000 co-relation queries the response was YES. [2023-12-09 14:47:19,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19943 conditions, 6277 events. 1577/6277 cut-off events. For 15631/16000 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 52490 event pairs, 139 based on Foata normal form. 5/5962 useless extension candidates. Maximal degree in co-relation 14432. Up to 2208 conditions per place. [2023-12-09 14:47:19,232 INFO L140 encePairwiseOnDemand]: 138/161 looper letters, 373 selfloop transitions, 40 changer transitions 103/639 dead transitions. [2023-12-09 14:47:19,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 639 transitions, 6695 flow [2023-12-09 14:47:19,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-09 14:47:19,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-12-09 14:47:19,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2342 transitions. [2023-12-09 14:47:19,237 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5818633540372671 [2023-12-09 14:47:19,237 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2342 transitions. [2023-12-09 14:47:19,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2342 transitions. [2023-12-09 14:47:19,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:19,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2342 transitions. [2023-12-09 14:47:19,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 93.68) internal successors, (2342), 25 states have internal predecessors, (2342), 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) [2023-12-09 14:47:19,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 161.0) internal successors, (4186), 26 states have internal predecessors, (4186), 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) [2023-12-09 14:47:19,247 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 161.0) internal successors, (4186), 26 states have internal predecessors, (4186), 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) [2023-12-09 14:47:19,249 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 62 predicate places. [2023-12-09 14:47:19,249 INFO L500 AbstractCegarLoop]: Abstraction has has 208 places, 639 transitions, 6695 flow [2023-12-09 14:47:19,250 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 87.5) internal successors, (1925), 22 states have internal predecessors, (1925), 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) [2023-12-09 14:47:19,250 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:19,250 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:19,251 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 14:47:19,251 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:19,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:19,253 INFO L85 PathProgramCache]: Analyzing trace with hash 245326480, now seen corresponding path program 1 times [2023-12-09 14:47:19,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:19,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90760871] [2023-12-09 14:47:19,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:19,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:19,375 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:19,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:19,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90760871] [2023-12-09 14:47:19,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90760871] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:19,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133752432] [2023-12-09 14:47:19,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:19,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:19,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:19,394 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) [2023-12-09 14:47:19,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 14:47:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:19,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-09 14:47:19,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-09 14:47:19,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-12-09 14:47:19,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133752432] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:19,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:19,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2023-12-09 14:47:19,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289691949] [2023-12-09 14:47:19,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:19,795 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-09 14:47:19,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:19,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-09 14:47:19,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-12-09 14:47:19,797 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 161 [2023-12-09 14:47:19,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 639 transitions, 6695 flow. Second operand has 12 states, 12 states have (on average 131.58333333333334) internal successors, (1579), 12 states have internal predecessors, (1579), 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) [2023-12-09 14:47:19,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:19,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 161 [2023-12-09 14:47:19,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:20,763 INFO L124 PetriNetUnfolderBase]: 1538/6174 cut-off events. [2023-12-09 14:47:20,763 INFO L125 PetriNetUnfolderBase]: For 20710/21204 co-relation queries the response was YES. [2023-12-09 14:47:20,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21168 conditions, 6174 events. 1538/6174 cut-off events. For 20710/21204 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 50301 event pairs, 162 based on Foata normal form. 13/5887 useless extension candidates. Maximal degree in co-relation 15435. Up to 2353 conditions per place. [2023-12-09 14:47:20,800 INFO L140 encePairwiseOnDemand]: 150/161 looper letters, 254 selfloop transitions, 41 changer transitions 65/648 dead transitions. [2023-12-09 14:47:20,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 648 transitions, 7347 flow [2023-12-09 14:47:20,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-09 14:47:20,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-12-09 14:47:20,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2378 transitions. [2023-12-09 14:47:20,856 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8205659075224293 [2023-12-09 14:47:20,856 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2378 transitions. [2023-12-09 14:47:20,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2378 transitions. [2023-12-09 14:47:20,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:20,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2378 transitions. [2023-12-09 14:47:20,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 132.11111111111111) internal successors, (2378), 18 states have internal predecessors, (2378), 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) [2023-12-09 14:47:20,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 161.0) internal successors, (3059), 19 states have internal predecessors, (3059), 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) [2023-12-09 14:47:20,863 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 161.0) internal successors, (3059), 19 states have internal predecessors, (3059), 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) [2023-12-09 14:47:20,864 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 77 predicate places. [2023-12-09 14:47:20,864 INFO L500 AbstractCegarLoop]: Abstraction has has 223 places, 648 transitions, 7347 flow [2023-12-09 14:47:20,864 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 131.58333333333334) internal successors, (1579), 12 states have internal predecessors, (1579), 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) [2023-12-09 14:47:20,864 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:20,865 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:20,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 14:47:21,069 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-09 14:47:21,069 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:21,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:21,070 INFO L85 PathProgramCache]: Analyzing trace with hash -673798463, now seen corresponding path program 1 times [2023-12-09 14:47:21,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:21,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777273799] [2023-12-09 14:47:21,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:21,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-09 14:47:22,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:22,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777273799] [2023-12-09 14:47:22,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777273799] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 14:47:22,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 14:47:22,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2023-12-09 14:47:22,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286092310] [2023-12-09 14:47:22,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 14:47:22,003 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-09 14:47:22,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:22,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-09 14:47:22,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2023-12-09 14:47:22,005 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 161 [2023-12-09 14:47:22,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 648 transitions, 7347 flow. Second operand has 23 states, 23 states have (on average 78.04347826086956) internal successors, (1795), 23 states have internal predecessors, (1795), 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) [2023-12-09 14:47:22,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:22,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 161 [2023-12-09 14:47:22,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:26,876 INFO L124 PetriNetUnfolderBase]: 2917/9441 cut-off events. [2023-12-09 14:47:26,876 INFO L125 PetriNetUnfolderBase]: For 38307/39023 co-relation queries the response was YES. [2023-12-09 14:47:26,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39793 conditions, 9441 events. 2917/9441 cut-off events. For 38307/39023 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 81787 event pairs, 170 based on Foata normal form. 0/9017 useless extension candidates. Maximal degree in co-relation 29687. Up to 4187 conditions per place. [2023-12-09 14:47:26,937 INFO L140 encePairwiseOnDemand]: 125/161 looper letters, 849 selfloop transitions, 257 changer transitions 141/1312 dead transitions. [2023-12-09 14:47:26,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 1312 transitions, 17922 flow [2023-12-09 14:47:26,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-12-09 14:47:26,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-12-09 14:47:26,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 5313 transitions. [2023-12-09 14:47:26,944 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4925373134328358 [2023-12-09 14:47:26,944 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 5313 transitions. [2023-12-09 14:47:26,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 5313 transitions. [2023-12-09 14:47:26,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:26,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 5313 transitions. [2023-12-09 14:47:26,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 79.29850746268657) internal successors, (5313), 67 states have internal predecessors, (5313), 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) [2023-12-09 14:47:26,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 161.0) internal successors, (10948), 68 states have internal predecessors, (10948), 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) [2023-12-09 14:47:26,965 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 161.0) internal successors, (10948), 68 states have internal predecessors, (10948), 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) [2023-12-09 14:47:26,965 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 143 predicate places. [2023-12-09 14:47:26,965 INFO L500 AbstractCegarLoop]: Abstraction has has 289 places, 1312 transitions, 17922 flow [2023-12-09 14:47:26,966 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 78.04347826086956) internal successors, (1795), 23 states have internal predecessors, (1795), 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) [2023-12-09 14:47:26,966 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:26,966 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:26,966 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-09 14:47:26,966 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:26,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:26,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1916245789, now seen corresponding path program 2 times [2023-12-09 14:47:26,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:26,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440091404] [2023-12-09 14:47:26,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:26,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:28,135 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-09 14:47:28,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:28,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440091404] [2023-12-09 14:47:28,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440091404] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:28,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446097980] [2023-12-09 14:47:28,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 14:47:28,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:28,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:28,138 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:47:28,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 14:47:28,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-09 14:47:28,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:47:28,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-09 14:47:28,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:28,333 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-09 14:47:28,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-09 14:47:28,352 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 14:47:28,353 INFO L378 Elim1Store]: Elim1 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 [2023-12-09 14:47:28,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 1 [2023-12-09 14:47:28,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 24 [2023-12-09 14:47:29,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 10 [2023-12-09 14:47:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-09 14:47:29,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:30,027 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_259 (Array Int Int))) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_259) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296)))) is different from false [2023-12-09 14:47:30,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 14:47:30,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-12-09 14:47:30,069 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 14:47:30,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 49 treesize of output 52 [2023-12-09 14:47:30,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-12-09 14:47:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-09 14:47:30,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446097980] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:30,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:30,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 73 [2023-12-09 14:47:30,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486622656] [2023-12-09 14:47:30,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:30,918 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2023-12-09 14:47:30,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:30,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2023-12-09 14:47:30,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=4852, Unknown=1, NotChecked=140, Total=5256 [2023-12-09 14:47:30,924 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 161 [2023-12-09 14:47:30,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 1312 transitions, 17922 flow. Second operand has 73 states, 73 states have (on average 64.94520547945206) internal successors, (4741), 73 states have internal predecessors, (4741), 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) [2023-12-09 14:47:30,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:30,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 161 [2023-12-09 14:47:30,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:47:42,314 INFO L124 PetriNetUnfolderBase]: 3421/11085 cut-off events. [2023-12-09 14:47:42,315 INFO L125 PetriNetUnfolderBase]: For 50325/51285 co-relation queries the response was YES. [2023-12-09 14:47:42,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54896 conditions, 11085 events. 3421/11085 cut-off events. For 50325/51285 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 99271 event pairs, 100 based on Foata normal form. 10/10600 useless extension candidates. Maximal degree in co-relation 40651. Up to 5159 conditions per place. [2023-12-09 14:47:42,404 INFO L140 encePairwiseOnDemand]: 120/161 looper letters, 1118 selfloop transitions, 365 changer transitions 165/1705 dead transitions. [2023-12-09 14:47:42,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 1705 transitions, 26184 flow [2023-12-09 14:47:42,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-12-09 14:47:42,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-12-09 14:47:42,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 5763 transitions. [2023-12-09 14:47:42,411 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.40676171654432525 [2023-12-09 14:47:42,411 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 5763 transitions. [2023-12-09 14:47:42,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 5763 transitions. [2023-12-09 14:47:42,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:47:42,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 5763 transitions. [2023-12-09 14:47:42,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 65.48863636363636) internal successors, (5763), 88 states have internal predecessors, (5763), 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) [2023-12-09 14:47:42,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 161.0) internal successors, (14329), 89 states have internal predecessors, (14329), 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) [2023-12-09 14:47:42,437 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 161.0) internal successors, (14329), 89 states have internal predecessors, (14329), 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) [2023-12-09 14:47:42,438 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 230 predicate places. [2023-12-09 14:47:42,438 INFO L500 AbstractCegarLoop]: Abstraction has has 376 places, 1705 transitions, 26184 flow [2023-12-09 14:47:42,439 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 64.94520547945206) internal successors, (4741), 73 states have internal predecessors, (4741), 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) [2023-12-09 14:47:42,439 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:47:42,440 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:47:42,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-09 14:47:42,644 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:42,645 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:47:42,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:47:42,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1211568189, now seen corresponding path program 1 times [2023-12-09 14:47:42,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:47:42,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571737959] [2023-12-09 14:47:42,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:42,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:47:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:44,677 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:44,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:47:44,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571737959] [2023-12-09 14:47:44,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571737959] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:47:44,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855896160] [2023-12-09 14:47:44,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:47:44,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:47:44,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:47:44,678 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) [2023-12-09 14:47:44,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-09 14:47:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:47:44,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 73 conjunts are in the unsatisfiable core [2023-12-09 14:47:44,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:47:45,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 1 [2023-12-09 14:47:45,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 14:47:45,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 48 treesize of output 19 [2023-12-09 14:47:46,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 10 [2023-12-09 14:47:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:46,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:47:48,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-12-09 14:47:49,394 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 7 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:47:49,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855896160] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:47:49,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:47:49,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 30, 29] total 93 [2023-12-09 14:47:49,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257366406] [2023-12-09 14:47:49,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:47:49,395 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2023-12-09 14:47:49,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:47:49,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2023-12-09 14:47:49,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=8179, Unknown=0, NotChecked=0, Total=8556 [2023-12-09 14:47:49,403 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 161 [2023-12-09 14:47:49,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 1705 transitions, 26184 flow. Second operand has 93 states, 93 states have (on average 77.86021505376344) internal successors, (7241), 93 states have internal predecessors, (7241), 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) [2023-12-09 14:47:49,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:47:49,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 161 [2023-12-09 14:47:49,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:48:54,166 INFO L124 PetriNetUnfolderBase]: 8505/27755 cut-off events. [2023-12-09 14:48:54,167 INFO L125 PetriNetUnfolderBase]: For 138356/141046 co-relation queries the response was YES. [2023-12-09 14:48:54,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157222 conditions, 27755 events. 8505/27755 cut-off events. For 138356/141046 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 291843 event pairs, 186 based on Foata normal form. 10/26520 useless extension candidates. Maximal degree in co-relation 113716. Up to 14618 conditions per place. [2023-12-09 14:48:54,427 INFO L140 encePairwiseOnDemand]: 117/161 looper letters, 3243 selfloop transitions, 1487 changer transitions 601/5396 dead transitions. [2023-12-09 14:48:54,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 930 places, 5396 transitions, 87892 flow [2023-12-09 14:48:54,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 555 states. [2023-12-09 14:48:54,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 555 states. [2023-12-09 14:48:54,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 43315 transitions. [2023-12-09 14:48:54,466 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.48475183257791954 [2023-12-09 14:48:54,466 INFO L72 ComplementDD]: Start complementDD. Operand 555 states and 43315 transitions. [2023-12-09 14:48:54,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 555 states and 43315 transitions. [2023-12-09 14:48:54,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 14:48:54,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 555 states and 43315 transitions. [2023-12-09 14:48:54,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 556 states, 555 states have (on average 78.04504504504504) internal successors, (43315), 555 states have internal predecessors, (43315), 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) [2023-12-09 14:48:54,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 556 states, 556 states have (on average 161.0) internal successors, (89516), 556 states have internal predecessors, (89516), 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) [2023-12-09 14:48:54,653 INFO L81 ComplementDD]: Finished complementDD. Result has 556 states, 556 states have (on average 161.0) internal successors, (89516), 556 states have internal predecessors, (89516), 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) [2023-12-09 14:48:54,654 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 784 predicate places. [2023-12-09 14:48:54,654 INFO L500 AbstractCegarLoop]: Abstraction has has 930 places, 5396 transitions, 87892 flow [2023-12-09 14:48:54,655 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 77.86021505376344) internal successors, (7241), 93 states have internal predecessors, (7241), 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) [2023-12-09 14:48:54,655 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 14:48:54,655 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 14:48:54,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-09 14:48:54,860 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:48:54,861 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-12-09 14:48:54,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 14:48:54,862 INFO L85 PathProgramCache]: Analyzing trace with hash 560186549, now seen corresponding path program 2 times [2023-12-09 14:48:54,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 14:48:54,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971215766] [2023-12-09 14:48:54,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 14:48:54,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 14:48:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 14:48:56,551 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:56,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 14:48:56,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971215766] [2023-12-09 14:48:56,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971215766] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 14:48:56,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480276498] [2023-12-09 14:48:56,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 14:48:56,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 14:48:56,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 14:48:56,552 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 14:48:56,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-09 14:48:56,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 14:48:56,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 14:48:56,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 90 conjunts are in the unsatisfiable core [2023-12-09 14:48:56,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 14:48:56,789 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-09 14:48:56,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-09 14:48:56,808 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-12-09 14:48:56,809 INFO L378 Elim1Store]: Elim1 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 [2023-12-09 14:48:57,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-12-09 14:48:57,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 40 treesize of output 29 [2023-12-09 14:48:58,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 14:48:58,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 55 treesize of output 23 [2023-12-09 14:48:59,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2023-12-09 14:48:59,670 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:48:59,670 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 14:49:01,293 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 14:49:01,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-12-09 14:49:01,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 14:49:01,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 49 treesize of output 52 [2023-12-09 14:49:01,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-12-09 14:49:02,192 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 14:49:02,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480276498] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 14:49:02,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 14:49:02,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 34] total 95 [2023-12-09 14:49:02,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645255271] [2023-12-09 14:49:02,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 14:49:02,193 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2023-12-09 14:49:02,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 14:49:02,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2023-12-09 14:49:02,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=577, Invalid=8352, Unknown=1, NotChecked=0, Total=8930 [2023-12-09 14:49:02,198 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 161 [2023-12-09 14:49:02,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 930 places, 5396 transitions, 87892 flow. Second operand has 95 states, 95 states have (on average 64.78947368421052) internal successors, (6155), 95 states have internal predecessors, (6155), 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) [2023-12-09 14:49:02,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 14:49:02,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 161 [2023-12-09 14:49:02,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 14:49:34,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 14:49:36,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 14:49:38,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 14:49:41,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 14:49:43,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 14:49:48,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 14:49:51,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 14:49:55,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 14:49:57,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 14:50:22,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 14:50:42,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 14:50:48,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 14:50:50,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 14:50:52,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2023-12-09 14:51:18,540 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 14:51:18,540 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 14:51:19,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 364 states. [2023-12-09 14:51:19,145 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-12-09 14:51:19,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-09 14:51:19,345 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-09 14:51:19,345 WARN L624 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 447 known predicates. [2023-12-09 14:51:19,347 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2023-12-09 14:51:19,347 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-12-09 14:51:19,347 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-12-09 14:51:19,347 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-12-09 14:51:19,347 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-12-09 14:51:19,348 INFO L457 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-12-09 14:51:19,352 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 14:51:19,352 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 14:51:19,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:51:19 BasicIcfg [2023-12-09 14:51:19,355 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 14:51:19,355 INFO L158 Benchmark]: Toolchain (without parser) took 250565.27ms. Allocated memory was 195.0MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 155.1MB in the beginning and 841.8MB in the end (delta: -686.7MB). Peak memory consumption was 946.3MB. Max. memory is 8.0GB. [2023-12-09 14:51:19,356 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 195.0MB. Free memory is still 151.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 14:51:19,356 INFO L158 Benchmark]: CACSL2BoogieTranslator took 484.50ms. Allocated memory is still 195.0MB. Free memory was 155.1MB in the beginning and 125.2MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. [2023-12-09 14:51:19,356 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.19ms. Allocated memory is still 195.0MB. Free memory was 125.2MB in the beginning and 122.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-09 14:51:19,356 INFO L158 Benchmark]: Boogie Preprocessor took 34.56ms. Allocated memory is still 195.0MB. Free memory was 122.6MB in the beginning and 120.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 14:51:19,356 INFO L158 Benchmark]: RCFGBuilder took 427.24ms. Allocated memory is still 195.0MB. Free memory was 120.5MB in the beginning and 102.0MB in the end (delta: 18.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2023-12-09 14:51:19,356 INFO L158 Benchmark]: TraceAbstraction took 249564.63ms. Allocated memory was 195.0MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 101.2MB in the beginning and 841.8MB in the end (delta: -740.6MB). Peak memory consumption was 892.9MB. Max. memory is 8.0GB. [2023-12-09 14:51:19,357 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 195.0MB. Free memory is still 151.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 484.50ms. Allocated memory is still 195.0MB. Free memory was 155.1MB in the beginning and 125.2MB in the end (delta: 29.9MB). Peak memory consumption was 29.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 48.19ms. Allocated memory is still 195.0MB. Free memory was 125.2MB in the beginning and 122.6MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.56ms. Allocated memory is still 195.0MB. Free memory was 122.6MB in the beginning and 120.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 427.24ms. Allocated memory is still 195.0MB. Free memory was 120.5MB in the beginning and 102.0MB in the end (delta: 18.5MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 249564.63ms. Allocated memory was 195.0MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 101.2MB in the beginning and 841.8MB in the end (delta: -740.6MB). Peak memory consumption was 892.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 941]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 447 known predicates. - TimeoutResultAtElement [Line: 1021]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 447 known predicates. - TimeoutResultAtElement [Line: 1022]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 447 known predicates. - TimeoutResultAtElement [Line: 941]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 447 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 256 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 249.4s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 225.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 23 mSolverCounterUnknown, 14381 SdHoareTripleChecker+Valid, 50.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14381 mSDsluCounter, 13729 SdHoareTripleChecker+Invalid, 47.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 385 IncrementalHoareTripleChecker+Unchecked, 13179 mSDsCounter, 571 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40771 IncrementalHoareTripleChecker+Invalid, 41750 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 571 mSolverCounterUnsat, 550 mSDtfsCounter, 40771 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2950 GetRequests, 1500 SyntacticMatches, 9 SemanticMatches, 1440 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 255017 ImplicationChecksByTransitivity, 115.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87892occurred in iteration=11, InterpolantAutomatonStates: 803, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 21.8s InterpolantComputationTime, 2147 NumberOfCodeBlocks, 2106 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 2868 ConstructedInterpolants, 32 QuantifiedInterpolants, 37042 SizeOfPredicates, 119 NumberOfNonLiveVariables, 1589 ConjunctsInSsa, 236 ConjunctsInUnsatCore, 22 InterpolantComputations, 7 PerfectInterpolantSequences, 174/670 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown