/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -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/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 19:51:06,904 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 19:51:06,970 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 [2023-11-29 19:51:06,990 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 19:51:06,991 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 19:51:06,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 19:51:06,992 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 19:51:06,992 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 19:51:06,993 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 19:51:06,995 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 19:51:06,996 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 19:51:06,996 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 19:51:06,996 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 19:51:06,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 19:51:06,997 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 19:51:06,998 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 19:51:06,998 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 19:51:06,998 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 19:51:06,998 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 19:51:06,998 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 19:51:06,998 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 19:51:06,999 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 19:51:06,999 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 19:51:06,999 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 19:51:07,000 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 19:51:07,000 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:51:07,000 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 19:51:07,000 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 19:51:07,000 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 19:51:07,000 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 19:51:07,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 19:51:07,001 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 19:51:07,001 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 19:51:07,002 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 19:51:07,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 19:51:07,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 19:51:07,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 19:51:07,180 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 19:51:07,181 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 19:51:07,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-11-29 19:51:08,122 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 19:51:08,303 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 19:51:08,303 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-11-29 19:51:08,315 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ba3ac56d/c2ec20b95e9d4654b2ec27baa85c58ca/FLAG5f099b473 [2023-11-29 19:51:08,324 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8ba3ac56d/c2ec20b95e9d4654b2ec27baa85c58ca [2023-11-29 19:51:08,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 19:51:08,326 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 19:51:08,327 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 19:51:08,327 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 19:51:08,330 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 19:51:08,330 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:51:08" (1/1) ... [2023-11-29 19:51:08,331 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bcc44e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:08, skipping insertion in model container [2023-11-29 19:51:08,331 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:51:08" (1/1) ... [2023-11-29 19:51:08,370 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 19:51:08,490 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2023-11-29 19:51:08,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:51:08,627 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 19:51:08,634 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i[1107,1120] [2023-11-29 19:51:08,660 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 19:51:08,687 INFO L206 MainTranslator]: Completed translation [2023-11-29 19:51:08,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:08 WrapperNode [2023-11-29 19:51:08,689 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 19:51:08,689 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 19:51:08,689 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 19:51:08,690 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 19:51:08,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:08" (1/1) ... [2023-11-29 19:51:08,715 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:08" (1/1) ... [2023-11-29 19:51:08,733 INFO L138 Inliner]: procedures = 166, calls = 27, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2023-11-29 19:51:08,734 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 19:51:08,734 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 19:51:08,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 19:51:08,734 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 19:51:08,739 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:08" (1/1) ... [2023-11-29 19:51:08,739 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:08" (1/1) ... [2023-11-29 19:51:08,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:08" (1/1) ... [2023-11-29 19:51:08,744 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:08" (1/1) ... [2023-11-29 19:51:08,755 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:08" (1/1) ... [2023-11-29 19:51:08,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:08" (1/1) ... [2023-11-29 19:51:08,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:08" (1/1) ... [2023-11-29 19:51:08,758 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:08" (1/1) ... [2023-11-29 19:51:08,760 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 19:51:08,760 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 19:51:08,760 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 19:51:08,760 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 19:51:08,761 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:08" (1/1) ... [2023-11-29 19:51:08,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 19:51:08,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:51:08,799 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) [2023-11-29 19:51:08,820 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-11-29 19:51:08,820 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-11-29 19:51:08,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 19:51:08,820 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 19:51:08,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 19:51:08,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 19:51:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 19:51:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 19:51:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 19:51:08,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 19:51:08,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 19:51:08,822 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 19:51:08,816 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 [2023-11-29 19:51:08,909 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 19:51:08,911 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 19:51:09,044 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 19:51:09,059 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 19:51:09,059 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 19:51:09,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:51:09 BoogieIcfgContainer [2023-11-29 19:51:09,060 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 19:51:09,062 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 19:51:09,062 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 19:51:09,063 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 19:51:09,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:51:08" (1/3) ... [2023-11-29 19:51:09,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f3f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:51:09, skipping insertion in model container [2023-11-29 19:51:09,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:51:08" (2/3) ... [2023-11-29 19:51:09,064 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26f3f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:51:09, skipping insertion in model container [2023-11-29 19:51:09,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:51:09" (3/3) ... [2023-11-29 19:51:09,065 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2023-11-29 19:51:09,076 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 19:51:09,076 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-29 19:51:09,076 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 19:51:09,108 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 19:51:09,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 113 transitions, 230 flow [2023-11-29 19:51:09,160 INFO L124 PetriNetUnfolderBase]: 10/112 cut-off events. [2023-11-29 19:51:09,160 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:51:09,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 112 events. 10/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 201 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2023-11-29 19:51:09,164 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 113 transitions, 230 flow [2023-11-29 19:51:09,167 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 112 transitions, 227 flow [2023-11-29 19:51:09,173 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 19:51:09,177 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;@101d88bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 19:51:09,177 INFO L363 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-29 19:51:09,231 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 19:51:09,232 INFO L124 PetriNetUnfolderBase]: 4/80 cut-off events. [2023-11-29 19:51:09,232 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 19:51:09,232 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:51:09,232 INFO L232 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] [2023-11-29 19:51:09,233 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-29 19:51:09,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:51:09,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1250579214, now seen corresponding path program 1 times [2023-11-29 19:51:09,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:51:09,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102836669] [2023-11-29 19:51:09,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:51:09,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:51:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:51:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:51:09,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:51:09,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102836669] [2023-11-29 19:51:09,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102836669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:51:09,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:51:09,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 19:51:09,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695846496] [2023-11-29 19:51:09,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:51:09,657 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 19:51:09,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:51:09,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 19:51:09,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 19:51:09,702 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 113 [2023-11-29 19:51:09,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 112 transitions, 227 flow. Second operand has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2023-11-29 19:51:09,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:51:09,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 113 [2023-11-29 19:51:09,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:51:09,863 INFO L124 PetriNetUnfolderBase]: 242/756 cut-off events. [2023-11-29 19:51:09,863 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-29 19:51:09,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 756 events. 242/756 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4128 event pairs, 94 based on Foata normal form. 48/715 useless extension candidates. Maximal degree in co-relation 1161. Up to 298 conditions per place. [2023-11-29 19:51:09,871 INFO L140 encePairwiseOnDemand]: 95/113 looper letters, 60 selfloop transitions, 15 changer transitions 0/145 dead transitions. [2023-11-29 19:51:09,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 145 transitions, 443 flow [2023-11-29 19:51:09,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 19:51:09,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 19:51:09,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 680 transitions. [2023-11-29 19:51:09,886 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7522123893805309 [2023-11-29 19:51:09,887 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 680 transitions. [2023-11-29 19:51:09,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 680 transitions. [2023-11-29 19:51:09,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:51:09,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 680 transitions. [2023-11-29 19:51:09,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 85.0) internal successors, (680), 8 states have internal predecessors, (680), 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) [2023-11-29 19:51:09,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 113.0) internal successors, (1017), 9 states have internal predecessors, (1017), 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) [2023-11-29 19:51:09,900 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 113.0) internal successors, (1017), 9 states have internal predecessors, (1017), 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) [2023-11-29 19:51:09,904 INFO L307 CegarLoopForPetriNet]: 106 programPoint places, 2 predicate places. [2023-11-29 19:51:09,904 INFO L500 AbstractCegarLoop]: Abstraction has has 108 places, 145 transitions, 443 flow [2023-11-29 19:51:09,905 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2023-11-29 19:51:09,905 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:51:09,905 INFO L232 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] [2023-11-29 19:51:09,905 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 19:51:09,906 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-29 19:51:09,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:51:09,907 INFO L85 PathProgramCache]: Analyzing trace with hash 86373190, now seen corresponding path program 1 times [2023-11-29 19:51:09,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:51:09,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390296641] [2023-11-29 19:51:09,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:51:09,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:51:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:51:10,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:51:10,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:51:10,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390296641] [2023-11-29 19:51:10,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390296641] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:51:10,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:51:10,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 19:51:10,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143167635] [2023-11-29 19:51:10,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:51:10,008 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 19:51:10,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:51:10,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 19:51:10,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 19:51:10,010 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 113 [2023-11-29 19:51:10,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 145 transitions, 443 flow. Second operand has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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) [2023-11-29 19:51:10,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:51:10,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 113 [2023-11-29 19:51:10,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:51:10,047 INFO L124 PetriNetUnfolderBase]: 10/149 cut-off events. [2023-11-29 19:51:10,047 INFO L125 PetriNetUnfolderBase]: For 45/61 co-relation queries the response was YES. [2023-11-29 19:51:10,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 149 events. 10/149 cut-off events. For 45/61 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 246 event pairs, 0 based on Foata normal form. 29/169 useless extension candidates. Maximal degree in co-relation 185. Up to 42 conditions per place. [2023-11-29 19:51:10,050 INFO L140 encePairwiseOnDemand]: 108/113 looper letters, 8 selfloop transitions, 6 changer transitions 8/114 dead transitions. [2023-11-29 19:51:10,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 114 transitions, 349 flow [2023-11-29 19:51:10,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 19:51:10,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 19:51:10,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 291 transitions. [2023-11-29 19:51:10,051 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8584070796460177 [2023-11-29 19:51:10,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 291 transitions. [2023-11-29 19:51:10,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 291 transitions. [2023-11-29 19:51:10,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:51:10,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 291 transitions. [2023-11-29 19:51:10,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 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) [2023-11-29 19:51:10,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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) [2023-11-29 19:51:10,053 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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) [2023-11-29 19:51:10,054 INFO L307 CegarLoopForPetriNet]: 106 programPoint places, 2 predicate places. [2023-11-29 19:51:10,054 INFO L500 AbstractCegarLoop]: Abstraction has has 108 places, 114 transitions, 349 flow [2023-11-29 19:51:10,054 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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) [2023-11-29 19:51:10,054 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:51:10,054 INFO L232 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] [2023-11-29 19:51:10,054 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 19:51:10,055 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-29 19:51:10,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:51:10,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1498832185, now seen corresponding path program 1 times [2023-11-29 19:51:10,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:51:10,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468405356] [2023-11-29 19:51:10,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:51:10,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:51:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:51:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:51:10,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:51:10,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468405356] [2023-11-29 19:51:10,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468405356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:51:10,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:51:10,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 19:51:10,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420918678] [2023-11-29 19:51:10,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:51:10,184 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 19:51:10,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:51:10,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 19:51:10,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 19:51:10,185 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 113 [2023-11-29 19:51:10,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 114 transitions, 349 flow. Second operand has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 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) [2023-11-29 19:51:10,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:51:10,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 113 [2023-11-29 19:51:10,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:51:10,278 INFO L124 PetriNetUnfolderBase]: 43/313 cut-off events. [2023-11-29 19:51:10,280 INFO L125 PetriNetUnfolderBase]: For 74/107 co-relation queries the response was YES. [2023-11-29 19:51:10,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 313 events. 43/313 cut-off events. For 74/107 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1109 event pairs, 19 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 536. Up to 95 conditions per place. [2023-11-29 19:51:10,285 INFO L140 encePairwiseOnDemand]: 104/113 looper letters, 29 selfloop transitions, 8 changer transitions 8/123 dead transitions. [2023-11-29 19:51:10,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 123 transitions, 463 flow [2023-11-29 19:51:10,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 19:51:10,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 19:51:10,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 534 transitions. [2023-11-29 19:51:10,287 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7876106194690266 [2023-11-29 19:51:10,287 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 534 transitions. [2023-11-29 19:51:10,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 534 transitions. [2023-11-29 19:51:10,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:51:10,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 534 transitions. [2023-11-29 19:51:10,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 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) [2023-11-29 19:51:10,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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) [2023-11-29 19:51:10,290 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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) [2023-11-29 19:51:10,291 INFO L307 CegarLoopForPetriNet]: 106 programPoint places, 5 predicate places. [2023-11-29 19:51:10,291 INFO L500 AbstractCegarLoop]: Abstraction has has 111 places, 123 transitions, 463 flow [2023-11-29 19:51:10,291 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 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) [2023-11-29 19:51:10,291 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:51:10,292 INFO L232 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] [2023-11-29 19:51:10,292 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 19:51:10,292 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-29 19:51:10,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:51:10,292 INFO L85 PathProgramCache]: Analyzing trace with hash -2046282006, now seen corresponding path program 1 times [2023-11-29 19:51:10,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:51:10,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619292374] [2023-11-29 19:51:10,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:51:10,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:51:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:51:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:51:10,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:51:10,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619292374] [2023-11-29 19:51:10,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619292374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:51:10,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:51:10,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 19:51:10,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902435044] [2023-11-29 19:51:10,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:51:10,387 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 19:51:10,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:51:10,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 19:51:10,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 19:51:10,389 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 113 [2023-11-29 19:51:10,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 123 transitions, 463 flow. Second operand has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 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) [2023-11-29 19:51:10,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:51:10,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 113 [2023-11-29 19:51:10,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:51:10,490 INFO L124 PetriNetUnfolderBase]: 49/346 cut-off events. [2023-11-29 19:51:10,490 INFO L125 PetriNetUnfolderBase]: For 202/289 co-relation queries the response was YES. [2023-11-29 19:51:10,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 346 events. 49/346 cut-off events. For 202/289 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1309 event pairs, 21 based on Foata normal form. 2/328 useless extension candidates. Maximal degree in co-relation 728. Up to 104 conditions per place. [2023-11-29 19:51:10,492 INFO L140 encePairwiseOnDemand]: 102/113 looper letters, 37 selfloop transitions, 12 changer transitions 8/129 dead transitions. [2023-11-29 19:51:10,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 129 transitions, 625 flow [2023-11-29 19:51:10,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 19:51:10,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 19:51:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 476 transitions. [2023-11-29 19:51:10,494 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7020648967551623 [2023-11-29 19:51:10,494 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 476 transitions. [2023-11-29 19:51:10,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 476 transitions. [2023-11-29 19:51:10,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:51:10,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 476 transitions. [2023-11-29 19:51:10,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.33333333333333) internal successors, (476), 6 states have internal predecessors, (476), 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) [2023-11-29 19:51:10,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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) [2023-11-29 19:51:10,497 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 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) [2023-11-29 19:51:10,498 INFO L307 CegarLoopForPetriNet]: 106 programPoint places, 8 predicate places. [2023-11-29 19:51:10,498 INFO L500 AbstractCegarLoop]: Abstraction has has 114 places, 129 transitions, 625 flow [2023-11-29 19:51:10,499 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 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) [2023-11-29 19:51:10,499 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:51:10,499 INFO L232 CegarLoopForPetriNet]: trace histogram [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] [2023-11-29 19:51:10,499 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 19:51:10,500 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-29 19:51:10,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:51:10,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1215730059, now seen corresponding path program 1 times [2023-11-29 19:51:10,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:51:10,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244114213] [2023-11-29 19:51:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:51:10,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:51:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:51:10,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:51:10,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:51:10,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244114213] [2023-11-29 19:51:10,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244114213] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 19:51:10,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537229080] [2023-11-29 19:51:10,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:51:10,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 19:51:10,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 19:51:10,688 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) [2023-11-29 19:51:10,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 19:51:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:51:10,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 19:51:10,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 19:51:10,872 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:51:10,872 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 19:51:10,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537229080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:51:10,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 19:51:10,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2023-11-29 19:51:10,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748764] [2023-11-29 19:51:10,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:51:10,873 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 19:51:10,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:51:10,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 19:51:10,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 19:51:10,874 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 113 [2023-11-29 19:51:10,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 129 transitions, 625 flow. Second operand has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 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) [2023-11-29 19:51:10,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:51:10,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 113 [2023-11-29 19:51:10,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:51:10,998 INFO L124 PetriNetUnfolderBase]: 63/421 cut-off events. [2023-11-29 19:51:10,999 INFO L125 PetriNetUnfolderBase]: For 378/564 co-relation queries the response was YES. [2023-11-29 19:51:11,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 421 events. 63/421 cut-off events. For 378/564 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1706 event pairs, 25 based on Foata normal form. 4/403 useless extension candidates. Maximal degree in co-relation 1083. Up to 140 conditions per place. [2023-11-29 19:51:11,001 INFO L140 encePairwiseOnDemand]: 105/113 looper letters, 48 selfloop transitions, 14 changer transitions 8/146 dead transitions. [2023-11-29 19:51:11,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 146 transitions, 877 flow [2023-11-29 19:51:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 19:51:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 19:51:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 794 transitions. [2023-11-29 19:51:11,004 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7807276302851525 [2023-11-29 19:51:11,004 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 794 transitions. [2023-11-29 19:51:11,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 794 transitions. [2023-11-29 19:51:11,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:51:11,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 794 transitions. [2023-11-29 19:51:11,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.22222222222223) internal successors, (794), 9 states have internal predecessors, (794), 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) [2023-11-29 19:51:11,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 113.0) internal successors, (1130), 10 states have internal predecessors, (1130), 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) [2023-11-29 19:51:11,007 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 113.0) internal successors, (1130), 10 states have internal predecessors, (1130), 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) [2023-11-29 19:51:11,008 INFO L307 CegarLoopForPetriNet]: 106 programPoint places, 16 predicate places. [2023-11-29 19:51:11,008 INFO L500 AbstractCegarLoop]: Abstraction has has 122 places, 146 transitions, 877 flow [2023-11-29 19:51:11,009 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 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) [2023-11-29 19:51:11,009 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:51:11,009 INFO L232 CegarLoopForPetriNet]: trace histogram [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] [2023-11-29 19:51:11,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 19:51:11,214 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 [2023-11-29 19:51:11,214 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-29 19:51:11,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:51:11,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1210288817, now seen corresponding path program 1 times [2023-11-29 19:51:11,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:51:11,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074710611] [2023-11-29 19:51:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:51:11,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:51:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:51:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 19:51:11,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:51:11,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074710611] [2023-11-29 19:51:11,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074710611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:51:11,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:51:11,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 19:51:11,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420276780] [2023-11-29 19:51:11,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:51:11,351 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 19:51:11,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:51:11,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 19:51:11,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 19:51:11,352 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 113 [2023-11-29 19:51:11,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 146 transitions, 877 flow. Second operand has 8 states, 8 states have (on average 73.75) internal successors, (590), 8 states have internal predecessors, (590), 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) [2023-11-29 19:51:11,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:51:11,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 113 [2023-11-29 19:51:11,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:51:11,517 INFO L124 PetriNetUnfolderBase]: 136/735 cut-off events. [2023-11-29 19:51:11,517 INFO L125 PetriNetUnfolderBase]: For 881/922 co-relation queries the response was YES. [2023-11-29 19:51:11,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2150 conditions, 735 events. 136/735 cut-off events. For 881/922 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3740 event pairs, 44 based on Foata normal form. 0/679 useless extension candidates. Maximal degree in co-relation 2087. Up to 219 conditions per place. [2023-11-29 19:51:11,521 INFO L140 encePairwiseOnDemand]: 95/113 looper letters, 52 selfloop transitions, 24 changer transitions 16/166 dead transitions. [2023-11-29 19:51:11,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 166 transitions, 1205 flow [2023-11-29 19:51:11,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 19:51:11,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 19:51:11,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 907 transitions. [2023-11-29 19:51:11,523 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.6688790560471977 [2023-11-29 19:51:11,523 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 907 transitions. [2023-11-29 19:51:11,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 907 transitions. [2023-11-29 19:51:11,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:51:11,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 907 transitions. [2023-11-29 19:51:11,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 75.58333333333333) internal successors, (907), 12 states have internal predecessors, (907), 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) [2023-11-29 19:51:11,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 113.0) internal successors, (1469), 13 states have internal predecessors, (1469), 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) [2023-11-29 19:51:11,528 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 113.0) internal successors, (1469), 13 states have internal predecessors, (1469), 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) [2023-11-29 19:51:11,530 INFO L307 CegarLoopForPetriNet]: 106 programPoint places, 27 predicate places. [2023-11-29 19:51:11,530 INFO L500 AbstractCegarLoop]: Abstraction has has 133 places, 166 transitions, 1205 flow [2023-11-29 19:51:11,530 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.75) internal successors, (590), 8 states have internal predecessors, (590), 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) [2023-11-29 19:51:11,530 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 19:51:11,530 INFO L232 CegarLoopForPetriNet]: trace histogram [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] [2023-11-29 19:51:11,531 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 19:51:11,531 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-29 19:51:11,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 19:51:11,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1159091873, now seen corresponding path program 1 times [2023-11-29 19:51:11,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 19:51:11,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467905494] [2023-11-29 19:51:11,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 19:51:11,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 19:51:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 19:51:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 19:51:11,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 19:51:11,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467905494] [2023-11-29 19:51:11,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467905494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 19:51:11,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 19:51:11,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 19:51:11,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017548216] [2023-11-29 19:51:11,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 19:51:11,612 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 19:51:11,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 19:51:11,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 19:51:11,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 19:51:11,614 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 113 [2023-11-29 19:51:11,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 166 transitions, 1205 flow. Second operand has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 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) [2023-11-29 19:51:11,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 19:51:11,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 113 [2023-11-29 19:51:11,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 19:51:11,735 INFO L124 PetriNetUnfolderBase]: 160/756 cut-off events. [2023-11-29 19:51:11,735 INFO L125 PetriNetUnfolderBase]: For 1220/1316 co-relation queries the response was YES. [2023-11-29 19:51:11,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2465 conditions, 756 events. 160/756 cut-off events. For 1220/1316 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3950 event pairs, 31 based on Foata normal form. 4/710 useless extension candidates. Maximal degree in co-relation 2398. Up to 203 conditions per place. [2023-11-29 19:51:11,738 INFO L140 encePairwiseOnDemand]: 103/113 looper letters, 0 selfloop transitions, 0 changer transitions 172/172 dead transitions. [2023-11-29 19:51:11,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 172 transitions, 1399 flow [2023-11-29 19:51:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 19:51:11,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 19:51:11,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 676 transitions. [2023-11-29 19:51:11,740 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.7477876106194691 [2023-11-29 19:51:11,740 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 676 transitions. [2023-11-29 19:51:11,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 676 transitions. [2023-11-29 19:51:11,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 19:51:11,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 676 transitions. [2023-11-29 19:51:11,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 84.5) internal successors, (676), 8 states have internal predecessors, (676), 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) [2023-11-29 19:51:11,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 113.0) internal successors, (1017), 9 states have internal predecessors, (1017), 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) [2023-11-29 19:51:11,743 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 113.0) internal successors, (1017), 9 states have internal predecessors, (1017), 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) [2023-11-29 19:51:11,743 INFO L307 CegarLoopForPetriNet]: 106 programPoint places, 31 predicate places. [2023-11-29 19:51:11,743 INFO L500 AbstractCegarLoop]: Abstraction has has 137 places, 172 transitions, 1399 flow [2023-11-29 19:51:11,744 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 84.16666666666667) internal successors, (505), 6 states have internal predecessors, (505), 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) [2023-11-29 19:51:11,748 INFO L143 wickiGriesTestDumper]: Dumping Owicki-Gries test to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/13-privatized_69-refine-protected-loop-interval_true.i_BEv2_AllErrorsAtOnce [2023-11-29 19:51:11,777 INFO L810 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-29 19:51:11,778 INFO L810 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-29 19:51:11,778 INFO L810 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-11-29 19:51:11,778 INFO L810 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-29 19:51:11,778 INFO L810 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-29 19:51:11,778 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 19:51:11,779 INFO L457 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-29 19:51:11,784 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 19:51:11,784 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 19:51:11,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:51:11 BasicIcfg [2023-11-29 19:51:11,799 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 19:51:11,800 INFO L158 Benchmark]: Toolchain (without parser) took 3473.53ms. Allocated memory is still 568.3MB. Free memory was 526.3MB in the beginning and 301.7MB in the end (delta: 224.6MB). Peak memory consumption was 225.4MB. Max. memory is 16.0GB. [2023-11-29 19:51:11,800 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 335.5MB. Free memory is still 287.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 19:51:11,800 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.06ms. Allocated memory is still 568.3MB. Free memory was 526.3MB in the beginning and 506.2MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-11-29 19:51:11,800 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.35ms. Allocated memory is still 568.3MB. Free memory was 506.2MB in the beginning and 503.7MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-11-29 19:51:11,800 INFO L158 Benchmark]: Boogie Preprocessor took 25.84ms. Allocated memory is still 568.3MB. Free memory was 503.7MB in the beginning and 502.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 19:51:11,800 INFO L158 Benchmark]: RCFGBuilder took 299.87ms. Allocated memory is still 568.3MB. Free memory was 502.4MB in the beginning and 486.5MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-11-29 19:51:11,801 INFO L158 Benchmark]: TraceAbstraction took 2737.60ms. Allocated memory is still 568.3MB. Free memory was 485.7MB in the beginning and 301.7MB in the end (delta: 184.0MB). Peak memory consumption was 185.6MB. Max. memory is 16.0GB. [2023-11-29 19:51:11,801 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 335.5MB. Free memory is still 287.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 362.06ms. Allocated memory is still 568.3MB. Free memory was 526.3MB in the beginning and 506.2MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.35ms. Allocated memory is still 568.3MB. Free memory was 506.2MB in the beginning and 503.7MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.84ms. Allocated memory is still 568.3MB. Free memory was 503.7MB in the beginning and 502.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 299.87ms. Allocated memory is still 568.3MB. Free memory was 502.4MB in the beginning and 486.5MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 2737.60ms. Allocated memory is still 568.3MB. Free memory was 485.7MB in the beginning and 301.7MB in the end (delta: 184.0MB). Peak memory consumption was 185.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 148 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.7s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 176 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 176 mSDsluCounter, 286 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 182 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 576 IncrementalHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 104 mSDtfsCounter, 576 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1399occurred in iteration=7, InterpolantAutomatonStates: 52, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 540 NumberOfCodeBlocks, 540 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 532 ConstructedInterpolants, 0 QuantifiedInterpolants, 1020 SizeOfPredicates, 4 NumberOfNonLiveVariables, 182 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 36/44 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 19:51:11,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...