/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/weaver/clever.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:14:09,435 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:14:09,500 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 15:14:09,524 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:14:09,525 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:14:09,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:14:09,528 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:14:09,529 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:14:09,529 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:14:09,532 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:14:09,532 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:14:09,532 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:14:09,532 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:14:09,533 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:14:09,534 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:14:09,534 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:14:09,534 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:14:09,534 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:14:09,534 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:14:09,534 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:14:09,534 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:14:09,535 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:14:09,535 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:14:09,535 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:14:09,535 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:14:09,536 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:14:09,536 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:14:09,537 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:14:09,537 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:14:09,537 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:14:09,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:14:09,538 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:14:09,538 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:14:09,538 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:14:09,735 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:14:09,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:14:09,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:14:09,753 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:14:09,754 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:14:09,754 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/clever.wvr.c [2023-12-09 15:14:10,817 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:14:10,982 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:14:10,982 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/clever.wvr.c [2023-12-09 15:14:10,989 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4905037a0/564093d2a724454fbba345e19188521a/FLAG3ec1c3828 [2023-12-09 15:14:11,003 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4905037a0/564093d2a724454fbba345e19188521a [2023-12-09 15:14:11,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:14:11,006 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:14:11,008 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:14:11,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:14:11,022 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:14:11,022 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:14:11" (1/1) ... [2023-12-09 15:14:11,023 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@252fa164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:11, skipping insertion in model container [2023-12-09 15:14:11,023 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:14:11" (1/1) ... [2023-12-09 15:14:11,041 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:14:11,152 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/clever.wvr.c[2159,2172] [2023-12-09 15:14:11,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:14:11,162 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:14:11,175 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/clever.wvr.c[2159,2172] [2023-12-09 15:14:11,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:14:11,187 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:14:11,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:11 WrapperNode [2023-12-09 15:14:11,188 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:14:11,189 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:14:11,189 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:14:11,189 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:14:11,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:11" (1/1) ... [2023-12-09 15:14:11,199 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:11" (1/1) ... [2023-12-09 15:14:11,212 INFO L138 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 84 [2023-12-09 15:14:11,213 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:14:11,213 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:14:11,213 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:14:11,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:14:11,220 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:11" (1/1) ... [2023-12-09 15:14:11,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:11" (1/1) ... [2023-12-09 15:14:11,221 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:11" (1/1) ... [2023-12-09 15:14:11,222 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:11" (1/1) ... [2023-12-09 15:14:11,225 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:11" (1/1) ... [2023-12-09 15:14:11,227 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:11" (1/1) ... [2023-12-09 15:14:11,228 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:11" (1/1) ... [2023-12-09 15:14:11,229 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:11" (1/1) ... [2023-12-09 15:14:11,230 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:14:11,231 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:14:11,231 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:14:11,231 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:14:11,232 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:11" (1/1) ... [2023-12-09 15:14:11,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:14:11,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:11,253 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 15:14:11,260 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 15:14:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:14:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:14:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:14:11,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:14:11,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:14:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:14:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:14:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:14:11,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:14:11,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:14:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:14:11,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:14:11,279 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 15:14:11,364 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:14:11,365 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:14:11,513 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:14:11,527 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:14:11,527 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-09 15:14:11,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:14:11 BoogieIcfgContainer [2023-12-09 15:14:11,528 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:14:11,530 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:14:11,530 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:14:11,532 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:14:11,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:14:11" (1/3) ... [2023-12-09 15:14:11,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e0b39d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:14:11, skipping insertion in model container [2023-12-09 15:14:11,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:14:11" (2/3) ... [2023-12-09 15:14:11,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31e0b39d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:14:11, skipping insertion in model container [2023-12-09 15:14:11,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:14:11" (3/3) ... [2023-12-09 15:14:11,534 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2023-12-09 15:14:11,547 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:14:11,547 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:14:11,547 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:14:11,601 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:14:11,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 126 transitions, 266 flow [2023-12-09 15:14:11,693 INFO L124 PetriNetUnfolderBase]: 9/124 cut-off events. [2023-12-09 15:14:11,693 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:14:11,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 124 events. 9/124 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 83 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2023-12-09 15:14:11,697 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 126 transitions, 266 flow [2023-12-09 15:14:11,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 115 transitions, 242 flow [2023-12-09 15:14:11,710 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:14:11,715 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;@67ee4712, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:14:11,715 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:14:11,763 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:14:11,763 INFO L124 PetriNetUnfolderBase]: 9/114 cut-off events. [2023-12-09 15:14:11,763 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:14:11,763 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:11,764 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] [2023-12-09 15:14:11,764 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:11,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:11,768 INFO L85 PathProgramCache]: Analyzing trace with hash -306596640, now seen corresponding path program 1 times [2023-12-09 15:14:11,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:11,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94519273] [2023-12-09 15:14:11,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:11,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:12,495 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 15:14:12,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:12,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94519273] [2023-12-09 15:14:12,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94519273] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:12,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:12,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-09 15:14:12,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864681112] [2023-12-09 15:14:12,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:12,504 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-09 15:14:12,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:12,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-09 15:14:12,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-09 15:14:12,536 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 126 [2023-12-09 15:14:12,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 115 transitions, 242 flow. Second operand has 7 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 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 15:14:12,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:12,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 126 [2023-12-09 15:14:12,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:12,761 INFO L124 PetriNetUnfolderBase]: 20/191 cut-off events. [2023-12-09 15:14:12,761 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-12-09 15:14:12,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 191 events. 20/191 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 433 event pairs, 1 based on Foata normal form. 24/199 useless extension candidates. Maximal degree in co-relation 125. Up to 37 conditions per place. [2023-12-09 15:14:12,765 INFO L140 encePairwiseOnDemand]: 109/126 looper letters, 29 selfloop transitions, 5 changer transitions 8/119 dead transitions. [2023-12-09 15:14:12,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 119 transitions, 343 flow [2023-12-09 15:14:12,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-09 15:14:12,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-12-09 15:14:12,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 923 transitions. [2023-12-09 15:14:12,783 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7325396825396825 [2023-12-09 15:14:12,783 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 923 transitions. [2023-12-09 15:14:12,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 923 transitions. [2023-12-09 15:14:12,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:12,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 923 transitions. [2023-12-09 15:14:12,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 92.3) internal successors, (923), 10 states have internal predecessors, (923), 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 15:14:12,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 126.0) internal successors, (1386), 11 states have internal predecessors, (1386), 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 15:14:12,798 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 126.0) internal successors, (1386), 11 states have internal predecessors, (1386), 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 15:14:12,801 INFO L308 CegarLoopForPetriNet]: 113 programPoint places, 9 predicate places. [2023-12-09 15:14:12,801 INFO L500 AbstractCegarLoop]: Abstraction has has 122 places, 119 transitions, 343 flow [2023-12-09 15:14:12,801 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 90.71428571428571) internal successors, (635), 7 states have internal predecessors, (635), 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 15:14:12,801 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:12,802 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] [2023-12-09 15:14:12,802 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:14:12,802 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:12,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:12,803 INFO L85 PathProgramCache]: Analyzing trace with hash 406841018, now seen corresponding path program 1 times [2023-12-09 15:14:12,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:12,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577050369] [2023-12-09 15:14:12,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:12,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:12,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:13,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:13,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577050369] [2023-12-09 15:14:13,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577050369] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:13,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:13,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:14:13,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098926386] [2023-12-09 15:14:13,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:13,008 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:14:13,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:13,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:14:13,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:14:13,011 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 126 [2023-12-09 15:14:13,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 119 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 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 15:14:13,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:13,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 126 [2023-12-09 15:14:13,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:13,177 INFO L124 PetriNetUnfolderBase]: 127/479 cut-off events. [2023-12-09 15:14:13,177 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2023-12-09 15:14:13,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 896 conditions, 479 events. 127/479 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2535 event pairs, 11 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 620. Up to 119 conditions per place. [2023-12-09 15:14:13,184 INFO L140 encePairwiseOnDemand]: 116/126 looper letters, 49 selfloop transitions, 11 changer transitions 17/150 dead transitions. [2023-12-09 15:14:13,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 150 transitions, 607 flow [2023-12-09 15:14:13,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:14:13,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:14:13,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 708 transitions. [2023-12-09 15:14:13,186 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2023-12-09 15:14:13,186 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 708 transitions. [2023-12-09 15:14:13,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 708 transitions. [2023-12-09 15:14:13,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:13,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 708 transitions. [2023-12-09 15:14:13,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 88.5) internal successors, (708), 8 states have internal predecessors, (708), 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 15:14:13,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 126.0) internal successors, (1134), 9 states have internal predecessors, (1134), 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 15:14:13,191 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 126.0) internal successors, (1134), 9 states have internal predecessors, (1134), 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 15:14:13,192 INFO L308 CegarLoopForPetriNet]: 113 programPoint places, 16 predicate places. [2023-12-09 15:14:13,192 INFO L500 AbstractCegarLoop]: Abstraction has has 129 places, 150 transitions, 607 flow [2023-12-09 15:14:13,193 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 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 15:14:13,193 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:13,193 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] [2023-12-09 15:14:13,193 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:14:13,193 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:13,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:13,196 INFO L85 PathProgramCache]: Analyzing trace with hash 2100323820, now seen corresponding path program 2 times [2023-12-09 15:14:13,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:13,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053164006] [2023-12-09 15:14:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:13,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:13,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:13,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:13,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053164006] [2023-12-09 15:14:13,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053164006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:13,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:13,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:14:13,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808036900] [2023-12-09 15:14:13,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:13,449 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:14:13,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:13,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:14:13,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:14:13,452 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 126 [2023-12-09 15:14:13,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 150 transitions, 607 flow. Second operand has 6 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 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 15:14:13,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:13,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 126 [2023-12-09 15:14:13,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:13,576 INFO L124 PetriNetUnfolderBase]: 118/464 cut-off events. [2023-12-09 15:14:13,576 INFO L125 PetriNetUnfolderBase]: For 291/315 co-relation queries the response was YES. [2023-12-09 15:14:13,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1093 conditions, 464 events. 118/464 cut-off events. For 291/315 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2334 event pairs, 10 based on Foata normal form. 3/412 useless extension candidates. Maximal degree in co-relation 776. Up to 114 conditions per place. [2023-12-09 15:14:13,584 INFO L140 encePairwiseOnDemand]: 116/126 looper letters, 54 selfloop transitions, 15 changer transitions 19/161 dead transitions. [2023-12-09 15:14:13,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 161 transitions, 837 flow [2023-12-09 15:14:13,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:14:13,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:14:13,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 706 transitions. [2023-12-09 15:14:13,586 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7003968253968254 [2023-12-09 15:14:13,586 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 706 transitions. [2023-12-09 15:14:13,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 706 transitions. [2023-12-09 15:14:13,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:13,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 706 transitions. [2023-12-09 15:14:13,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 88.25) internal successors, (706), 8 states have internal predecessors, (706), 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 15:14:13,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 126.0) internal successors, (1134), 9 states have internal predecessors, (1134), 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 15:14:13,591 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 126.0) internal successors, (1134), 9 states have internal predecessors, (1134), 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 15:14:13,593 INFO L308 CegarLoopForPetriNet]: 113 programPoint places, 23 predicate places. [2023-12-09 15:14:13,593 INFO L500 AbstractCegarLoop]: Abstraction has has 136 places, 161 transitions, 837 flow [2023-12-09 15:14:13,593 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 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 15:14:13,593 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:13,593 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] [2023-12-09 15:14:13,594 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:14:13,594 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:13,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:13,594 INFO L85 PathProgramCache]: Analyzing trace with hash 85824995, now seen corresponding path program 1 times [2023-12-09 15:14:13,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:13,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631607095] [2023-12-09 15:14:13,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:13,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:14,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:14,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:14,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631607095] [2023-12-09 15:14:14,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631607095] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:14,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040492667] [2023-12-09 15:14:14,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:14,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:14,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:14,170 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 15:14:14,176 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 15:14:14,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:14,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-09 15:14:14,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:14,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:15,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040492667] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:14:15,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:14:15,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 29 [2023-12-09 15:14:15,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281094763] [2023-12-09 15:14:15,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:14:15,068 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-09 15:14:15,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:15,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-09 15:14:15,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=633, Unknown=0, NotChecked=0, Total=812 [2023-12-09 15:14:15,071 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 126 [2023-12-09 15:14:15,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 161 transitions, 837 flow. Second operand has 29 states, 29 states have (on average 74.82758620689656) internal successors, (2170), 29 states have internal predecessors, (2170), 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 15:14:15,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:15,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 126 [2023-12-09 15:14:15,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:16,021 INFO L124 PetriNetUnfolderBase]: 293/1011 cut-off events. [2023-12-09 15:14:16,021 INFO L125 PetriNetUnfolderBase]: For 1051/1124 co-relation queries the response was YES. [2023-12-09 15:14:16,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2911 conditions, 1011 events. 293/1011 cut-off events. For 1051/1124 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6856 event pairs, 23 based on Foata normal form. 15/902 useless extension candidates. Maximal degree in co-relation 2287. Up to 289 conditions per place. [2023-12-09 15:14:16,027 INFO L140 encePairwiseOnDemand]: 104/126 looper letters, 129 selfloop transitions, 36 changer transitions 37/274 dead transitions. [2023-12-09 15:14:16,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 274 transitions, 1902 flow [2023-12-09 15:14:16,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-09 15:14:16,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-12-09 15:14:16,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2369 transitions. [2023-12-09 15:14:16,032 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6065028161802355 [2023-12-09 15:14:16,033 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2369 transitions. [2023-12-09 15:14:16,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2369 transitions. [2023-12-09 15:14:16,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:16,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2369 transitions. [2023-12-09 15:14:16,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 76.41935483870968) internal successors, (2369), 31 states have internal predecessors, (2369), 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 15:14:16,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 126.0) internal successors, (4032), 32 states have internal predecessors, (4032), 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 15:14:16,043 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 126.0) internal successors, (4032), 32 states have internal predecessors, (4032), 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 15:14:16,044 INFO L308 CegarLoopForPetriNet]: 113 programPoint places, 53 predicate places. [2023-12-09 15:14:16,044 INFO L500 AbstractCegarLoop]: Abstraction has has 166 places, 274 transitions, 1902 flow [2023-12-09 15:14:16,045 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 74.82758620689656) internal successors, (2170), 29 states have internal predecessors, (2170), 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 15:14:16,045 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:16,045 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] [2023-12-09 15:14:16,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-09 15:14:16,249 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:16,250 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:16,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:16,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1210991285, now seen corresponding path program 2 times [2023-12-09 15:14:16,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:16,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714088015] [2023-12-09 15:14:16,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:16,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:16,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:16,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:16,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714088015] [2023-12-09 15:14:16,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714088015] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:16,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893206677] [2023-12-09 15:14:16,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:14:16,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:16,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:16,785 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 15:14:16,819 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 15:14:16,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:14:16,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:14:16,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-09 15:14:16,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:17,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:17,640 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:17,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893206677] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:14:17,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:14:17,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 28 [2023-12-09 15:14:17,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131210800] [2023-12-09 15:14:17,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:14:17,641 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-09 15:14:17,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:17,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-09 15:14:17,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2023-12-09 15:14:17,643 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 126 [2023-12-09 15:14:17,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 274 transitions, 1902 flow. Second operand has 28 states, 28 states have (on average 74.89285714285714) internal successors, (2097), 28 states have internal predecessors, (2097), 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 15:14:17,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:17,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 126 [2023-12-09 15:14:17,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:19,274 INFO L124 PetriNetUnfolderBase]: 763/2509 cut-off events. [2023-12-09 15:14:19,274 INFO L125 PetriNetUnfolderBase]: For 4194/4556 co-relation queries the response was YES. [2023-12-09 15:14:19,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8550 conditions, 2509 events. 763/2509 cut-off events. For 4194/4556 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 20313 event pairs, 80 based on Foata normal form. 59/2233 useless extension candidates. Maximal degree in co-relation 7178. Up to 833 conditions per place. [2023-12-09 15:14:19,294 INFO L140 encePairwiseOnDemand]: 104/126 looper letters, 326 selfloop transitions, 78 changer transitions 117/593 dead transitions. [2023-12-09 15:14:19,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 593 transitions, 5602 flow [2023-12-09 15:14:19,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-09 15:14:19,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-12-09 15:14:19,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3391 transitions. [2023-12-09 15:14:19,305 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6116522366522367 [2023-12-09 15:14:19,305 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3391 transitions. [2023-12-09 15:14:19,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3391 transitions. [2023-12-09 15:14:19,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:19,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3391 transitions. [2023-12-09 15:14:19,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 77.06818181818181) internal successors, (3391), 44 states have internal predecessors, (3391), 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 15:14:19,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 126.0) internal successors, (5670), 45 states have internal predecessors, (5670), 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 15:14:19,319 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 126.0) internal successors, (5670), 45 states have internal predecessors, (5670), 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 15:14:19,320 INFO L308 CegarLoopForPetriNet]: 113 programPoint places, 96 predicate places. [2023-12-09 15:14:19,320 INFO L500 AbstractCegarLoop]: Abstraction has has 209 places, 593 transitions, 5602 flow [2023-12-09 15:14:19,320 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 74.89285714285714) internal successors, (2097), 28 states have internal predecessors, (2097), 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 15:14:19,321 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:19,321 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] [2023-12-09 15:14:19,333 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 15:14:19,525 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:19,528 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:19,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:19,528 INFO L85 PathProgramCache]: Analyzing trace with hash 911697213, now seen corresponding path program 3 times [2023-12-09 15:14:19,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:19,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229856772] [2023-12-09 15:14:19,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:19,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:20,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:20,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:20,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229856772] [2023-12-09 15:14:20,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229856772] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:20,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024258778] [2023-12-09 15:14:20,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:14:20,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:20,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:20,031 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 15:14:20,076 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 15:14:20,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:14:20,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:14:20,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-09 15:14:20,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:20,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:20,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:20,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024258778] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:14:20,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:14:20,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 28 [2023-12-09 15:14:20,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446603330] [2023-12-09 15:14:20,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:14:20,776 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-09 15:14:20,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:20,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-09 15:14:20,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2023-12-09 15:14:20,778 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 126 [2023-12-09 15:14:20,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 593 transitions, 5602 flow. Second operand has 28 states, 28 states have (on average 74.89285714285714) internal successors, (2097), 28 states have internal predecessors, (2097), 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 15:14:20,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:20,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 126 [2023-12-09 15:14:20,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:22,390 INFO L124 PetriNetUnfolderBase]: 1152/3847 cut-off events. [2023-12-09 15:14:22,390 INFO L125 PetriNetUnfolderBase]: For 9594/10214 co-relation queries the response was YES. [2023-12-09 15:14:22,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14910 conditions, 3847 events. 1152/3847 cut-off events. For 9594/10214 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 33998 event pairs, 141 based on Foata normal form. 86/3419 useless extension candidates. Maximal degree in co-relation 11357. Up to 1316 conditions per place. [2023-12-09 15:14:22,416 INFO L140 encePairwiseOnDemand]: 104/126 looper letters, 494 selfloop transitions, 100 changer transitions 201/867 dead transitions. [2023-12-09 15:14:22,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 867 transitions, 10010 flow [2023-12-09 15:14:22,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-12-09 15:14:22,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-12-09 15:14:22,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2686 transitions. [2023-12-09 15:14:22,421 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6090702947845805 [2023-12-09 15:14:22,421 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2686 transitions. [2023-12-09 15:14:22,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2686 transitions. [2023-12-09 15:14:22,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:22,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2686 transitions. [2023-12-09 15:14:22,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 76.74285714285715) internal successors, (2686), 35 states have internal predecessors, (2686), 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 15:14:22,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 126.0) internal successors, (4536), 36 states have internal predecessors, (4536), 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 15:14:22,431 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 126.0) internal successors, (4536), 36 states have internal predecessors, (4536), 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 15:14:22,431 INFO L308 CegarLoopForPetriNet]: 113 programPoint places, 130 predicate places. [2023-12-09 15:14:22,431 INFO L500 AbstractCegarLoop]: Abstraction has has 243 places, 867 transitions, 10010 flow [2023-12-09 15:14:22,432 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 74.89285714285714) internal successors, (2097), 28 states have internal predecessors, (2097), 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 15:14:22,432 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:22,432 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] [2023-12-09 15:14:22,437 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 15:14:22,637 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:22,637 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:22,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:22,638 INFO L85 PathProgramCache]: Analyzing trace with hash -260145355, now seen corresponding path program 1 times [2023-12-09 15:14:22,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:22,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642734359] [2023-12-09 15:14:22,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:22,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:14:22,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:22,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642734359] [2023-12-09 15:14:22,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642734359] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:22,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:22,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:14:22,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760563028] [2023-12-09 15:14:22,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:22,728 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:14:22,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:22,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:14:22,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:14:22,729 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 126 [2023-12-09 15:14:22,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 867 transitions, 10010 flow. Second operand has 6 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 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 15:14:22,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:22,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 126 [2023-12-09 15:14:22,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:23,351 INFO L124 PetriNetUnfolderBase]: 1158/4139 cut-off events. [2023-12-09 15:14:23,351 INFO L125 PetriNetUnfolderBase]: For 15491/16401 co-relation queries the response was YES. [2023-12-09 15:14:23,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17845 conditions, 4139 events. 1158/4139 cut-off events. For 15491/16401 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 38397 event pairs, 83 based on Foata normal form. 54/3703 useless extension candidates. Maximal degree in co-relation 12873. Up to 1418 conditions per place. [2023-12-09 15:14:23,389 INFO L140 encePairwiseOnDemand]: 116/126 looper letters, 535 selfloop transitions, 39 changer transitions 234/1076 dead transitions. [2023-12-09 15:14:23,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 1076 transitions, 14444 flow [2023-12-09 15:14:23,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:14:23,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:14:23,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 714 transitions. [2023-12-09 15:14:23,392 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2023-12-09 15:14:23,392 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 714 transitions. [2023-12-09 15:14:23,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 714 transitions. [2023-12-09 15:14:23,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:23,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 714 transitions. [2023-12-09 15:14:23,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 89.25) internal successors, (714), 8 states have internal predecessors, (714), 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 15:14:23,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 126.0) internal successors, (1134), 9 states have internal predecessors, (1134), 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 15:14:23,394 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 126.0) internal successors, (1134), 9 states have internal predecessors, (1134), 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 15:14:23,395 INFO L308 CegarLoopForPetriNet]: 113 programPoint places, 137 predicate places. [2023-12-09 15:14:23,395 INFO L500 AbstractCegarLoop]: Abstraction has has 250 places, 1076 transitions, 14444 flow [2023-12-09 15:14:23,395 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 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 15:14:23,395 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:23,395 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] [2023-12-09 15:14:23,395 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-09 15:14:23,395 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:23,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:23,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1950078997, now seen corresponding path program 2 times [2023-12-09 15:14:23,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:23,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17707349] [2023-12-09 15:14:23,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:23,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:14:23,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:23,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17707349] [2023-12-09 15:14:23,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17707349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:14:23,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:14:23,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:14:23,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548112264] [2023-12-09 15:14:23,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:14:23,491 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:14:23,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:23,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:14:23,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:14:23,491 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 126 [2023-12-09 15:14:23,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 1076 transitions, 14444 flow. Second operand has 6 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 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 15:14:23,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:23,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 126 [2023-12-09 15:14:23,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:24,221 INFO L124 PetriNetUnfolderBase]: 1162/4099 cut-off events. [2023-12-09 15:14:24,221 INFO L125 PetriNetUnfolderBase]: For 19704/20622 co-relation queries the response was YES. [2023-12-09 15:14:24,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19755 conditions, 4099 events. 1162/4099 cut-off events. For 19704/20622 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 37806 event pairs, 77 based on Foata normal form. 53/3668 useless extension candidates. Maximal degree in co-relation 14263. Up to 1432 conditions per place. [2023-12-09 15:14:24,258 INFO L140 encePairwiseOnDemand]: 116/126 looper letters, 500 selfloop transitions, 60 changer transitions 229/1057 dead transitions. [2023-12-09 15:14:24,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 1057 transitions, 15693 flow [2023-12-09 15:14:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:14:24,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:14:24,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 705 transitions. [2023-12-09 15:14:24,260 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6994047619047619 [2023-12-09 15:14:24,260 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 705 transitions. [2023-12-09 15:14:24,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 705 transitions. [2023-12-09 15:14:24,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:24,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 705 transitions. [2023-12-09 15:14:24,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 88.125) internal successors, (705), 8 states have internal predecessors, (705), 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 15:14:24,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 126.0) internal successors, (1134), 9 states have internal predecessors, (1134), 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 15:14:24,262 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 126.0) internal successors, (1134), 9 states have internal predecessors, (1134), 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 15:14:24,264 INFO L308 CegarLoopForPetriNet]: 113 programPoint places, 144 predicate places. [2023-12-09 15:14:24,264 INFO L500 AbstractCegarLoop]: Abstraction has has 257 places, 1057 transitions, 15693 flow [2023-12-09 15:14:24,264 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.5) internal successors, (513), 6 states have internal predecessors, (513), 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 15:14:24,264 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:24,264 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 15:14:24,265 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-09 15:14:24,265 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:24,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:24,265 INFO L85 PathProgramCache]: Analyzing trace with hash -2013880045, now seen corresponding path program 1 times [2023-12-09 15:14:24,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:24,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131538470] [2023-12-09 15:14:24,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:24,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:24,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:24,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131538470] [2023-12-09 15:14:24,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131538470] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:24,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012241126] [2023-12-09 15:14:24,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:24,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:24,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:24,901 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 15:14:24,948 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 15:14:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:25,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-09 15:14:25,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:25,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:14:26,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012241126] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:14:26,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:14:26,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 14] total 35 [2023-12-09 15:14:26,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925170508] [2023-12-09 15:14:26,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:14:26,035 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-09 15:14:26,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:26,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-09 15:14:26,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1051, Unknown=0, NotChecked=0, Total=1190 [2023-12-09 15:14:26,037 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 126 [2023-12-09 15:14:26,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 1057 transitions, 15693 flow. Second operand has 35 states, 35 states have (on average 72.91428571428571) internal successors, (2552), 35 states have internal predecessors, (2552), 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 15:14:26,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:26,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 126 [2023-12-09 15:14:26,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:29,634 INFO L124 PetriNetUnfolderBase]: 1503/5194 cut-off events. [2023-12-09 15:14:29,634 INFO L125 PetriNetUnfolderBase]: For 31204/32826 co-relation queries the response was YES. [2023-12-09 15:14:29,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27759 conditions, 5194 events. 1503/5194 cut-off events. For 31204/32826 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 51028 event pairs, 69 based on Foata normal form. 139/4739 useless extension candidates. Maximal degree in co-relation 23757. Up to 1836 conditions per place. [2023-12-09 15:14:29,681 INFO L140 encePairwiseOnDemand]: 100/126 looper letters, 849 selfloop transitions, 172 changer transitions 259/1359 dead transitions. [2023-12-09 15:14:29,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 1359 transitions, 22618 flow [2023-12-09 15:14:29,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-09 15:14:29,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-12-09 15:14:29,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 4542 transitions. [2023-12-09 15:14:29,686 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5909445745511319 [2023-12-09 15:14:29,686 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 4542 transitions. [2023-12-09 15:14:29,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 4542 transitions. [2023-12-09 15:14:29,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:29,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 4542 transitions. [2023-12-09 15:14:29,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 74.45901639344262) internal successors, (4542), 61 states have internal predecessors, (4542), 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 15:14:29,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 126.0) internal successors, (7812), 62 states have internal predecessors, (7812), 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 15:14:29,700 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 126.0) internal successors, (7812), 62 states have internal predecessors, (7812), 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 15:14:29,701 INFO L308 CegarLoopForPetriNet]: 113 programPoint places, 204 predicate places. [2023-12-09 15:14:29,701 INFO L500 AbstractCegarLoop]: Abstraction has has 317 places, 1359 transitions, 22618 flow [2023-12-09 15:14:29,702 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 72.91428571428571) internal successors, (2552), 35 states have internal predecessors, (2552), 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 15:14:29,702 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:29,702 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 15:14:29,718 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 15:14:29,918 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:29,921 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:29,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:29,922 INFO L85 PathProgramCache]: Analyzing trace with hash -504966095, now seen corresponding path program 2 times [2023-12-09 15:14:29,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:29,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831779707] [2023-12-09 15:14:29,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:29,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:30,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:30,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:30,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831779707] [2023-12-09 15:14:30,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831779707] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:30,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295096947] [2023-12-09 15:14:30,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:14:30,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:30,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:30,638 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 15:14:30,664 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 15:14:30,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:14:30,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:14:30,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:14:30,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:31,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:31,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:31,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:14:31,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295096947] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:14:31,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:14:31,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 14] total 36 [2023-12-09 15:14:31,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416759571] [2023-12-09 15:14:31,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:14:31,993 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-12-09 15:14:31,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:31,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-12-09 15:14:31,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260 [2023-12-09 15:14:31,995 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 126 [2023-12-09 15:14:31,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 1359 transitions, 22618 flow. Second operand has 36 states, 36 states have (on average 72.86111111111111) internal successors, (2623), 36 states have internal predecessors, (2623), 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 15:14:31,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:31,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 126 [2023-12-09 15:14:31,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:39,745 INFO L124 PetriNetUnfolderBase]: 2145/7469 cut-off events. [2023-12-09 15:14:39,745 INFO L125 PetriNetUnfolderBase]: For 55035/57953 co-relation queries the response was YES. [2023-12-09 15:14:39,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43528 conditions, 7469 events. 2145/7469 cut-off events. For 55035/57953 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 77517 event pairs, 92 based on Foata normal form. 281/6887 useless extension candidates. Maximal degree in co-relation 32441. Up to 2836 conditions per place. [2023-12-09 15:14:39,803 INFO L140 encePairwiseOnDemand]: 100/126 looper letters, 1252 selfloop transitions, 262 changer transitions 336/1929 dead transitions. [2023-12-09 15:14:39,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 1929 transitions, 36100 flow [2023-12-09 15:14:39,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2023-12-09 15:14:39,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2023-12-09 15:14:39,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 6126 transitions. [2023-12-09 15:14:39,809 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5929152148664344 [2023-12-09 15:14:39,810 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 6126 transitions. [2023-12-09 15:14:39,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 6126 transitions. [2023-12-09 15:14:39,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:39,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 6126 transitions. [2023-12-09 15:14:39,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 74.70731707317073) internal successors, (6126), 82 states have internal predecessors, (6126), 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 15:14:39,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 126.0) internal successors, (10458), 83 states have internal predecessors, (10458), 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 15:14:39,839 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 126.0) internal successors, (10458), 83 states have internal predecessors, (10458), 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 15:14:39,840 INFO L308 CegarLoopForPetriNet]: 113 programPoint places, 283 predicate places. [2023-12-09 15:14:39,840 INFO L500 AbstractCegarLoop]: Abstraction has has 396 places, 1929 transitions, 36100 flow [2023-12-09 15:14:39,840 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 72.86111111111111) internal successors, (2623), 36 states have internal predecessors, (2623), 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 15:14:39,840 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:39,840 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 15:14:39,852 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 15:14:40,045 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,SelfDestructingSolverStorable9 [2023-12-09 15:14:40,047 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:40,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:40,047 INFO L85 PathProgramCache]: Analyzing trace with hash -494277161, now seen corresponding path program 3 times [2023-12-09 15:14:40,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:40,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461269418] [2023-12-09 15:14:40,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:40,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:40,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:14:40,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:40,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461269418] [2023-12-09 15:14:40,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461269418] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:40,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940053855] [2023-12-09 15:14:40,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:14:40,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:40,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:40,472 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:14:40,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-09 15:14:40,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-09 15:14:40,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:14:40,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:14:40,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:41,154 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:41,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:41,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:14:41,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940053855] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:14:41,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:14:41,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 32 [2023-12-09 15:14:41,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286975731] [2023-12-09 15:14:41,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:14:41,564 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-09 15:14:41,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:41,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-09 15:14:41,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=861, Unknown=0, NotChecked=0, Total=992 [2023-12-09 15:14:41,566 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 126 [2023-12-09 15:14:41,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 1929 transitions, 36100 flow. Second operand has 32 states, 32 states have (on average 78.4375) internal successors, (2510), 32 states have internal predecessors, (2510), 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 15:14:41,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:41,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 126 [2023-12-09 15:14:41,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:46,163 INFO L124 PetriNetUnfolderBase]: 2304/8010 cut-off events. [2023-12-09 15:14:46,164 INFO L125 PetriNetUnfolderBase]: For 66723/70214 co-relation queries the response was YES. [2023-12-09 15:14:46,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49280 conditions, 8010 events. 2304/8010 cut-off events. For 66723/70214 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 84451 event pairs, 93 based on Foata normal form. 251/7334 useless extension candidates. Maximal degree in co-relation 36806. Up to 3081 conditions per place. [2023-12-09 15:14:46,238 INFO L140 encePairwiseOnDemand]: 101/126 looper letters, 662 selfloop transitions, 264 changer transitions 354/2045 dead transitions. [2023-12-09 15:14:46,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 2045 transitions, 40271 flow [2023-12-09 15:14:46,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-12-09 15:14:46,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2023-12-09 15:14:46,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 4524 transitions. [2023-12-09 15:14:46,243 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6299081035923141 [2023-12-09 15:14:46,243 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 4524 transitions. [2023-12-09 15:14:46,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 4524 transitions. [2023-12-09 15:14:46,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:46,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 4524 transitions. [2023-12-09 15:14:46,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 79.36842105263158) internal successors, (4524), 57 states have internal predecessors, (4524), 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 15:14:46,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 126.0) internal successors, (7308), 58 states have internal predecessors, (7308), 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 15:14:46,257 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 126.0) internal successors, (7308), 58 states have internal predecessors, (7308), 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 15:14:46,258 INFO L308 CegarLoopForPetriNet]: 113 programPoint places, 339 predicate places. [2023-12-09 15:14:46,258 INFO L500 AbstractCegarLoop]: Abstraction has has 452 places, 2045 transitions, 40271 flow [2023-12-09 15:14:46,259 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 78.4375) internal successors, (2510), 32 states have internal predecessors, (2510), 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 15:14:46,259 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:46,259 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 15:14:46,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-09 15:14:46,466 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:46,467 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:46,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:46,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1975814051, now seen corresponding path program 4 times [2023-12-09 15:14:46,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:46,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980644654] [2023-12-09 15:14:46,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:46,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:47,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:47,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:47,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980644654] [2023-12-09 15:14:47,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980644654] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:47,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860338963] [2023-12-09 15:14:47,162 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:14:47,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:47,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:47,163 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:14:47,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-09 15:14:47,360 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:14:47,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:14:47,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-09 15:14:47,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:47,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:47,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:48,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860338963] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:14:48,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:14:48,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 38 [2023-12-09 15:14:48,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053621383] [2023-12-09 15:14:48,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:14:48,739 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-09 15:14:48,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:48,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-09 15:14:48,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1194, Unknown=0, NotChecked=0, Total=1406 [2023-12-09 15:14:48,742 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 126 [2023-12-09 15:14:48,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 2045 transitions, 40271 flow. Second operand has 38 states, 38 states have (on average 67.97368421052632) internal successors, (2583), 38 states have internal predecessors, (2583), 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 15:14:48,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:48,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 126 [2023-12-09 15:14:48,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:14:55,849 INFO L124 PetriNetUnfolderBase]: 2744/9423 cut-off events. [2023-12-09 15:14:55,849 INFO L125 PetriNetUnfolderBase]: For 96899/103351 co-relation queries the response was YES. [2023-12-09 15:14:55,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62767 conditions, 9423 events. 2744/9423 cut-off events. For 96899/103351 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 102394 event pairs, 129 based on Foata normal form. 664/9000 useless extension candidates. Maximal degree in co-relation 54728. Up to 3659 conditions per place. [2023-12-09 15:14:55,930 INFO L140 encePairwiseOnDemand]: 95/126 looper letters, 1527 selfloop transitions, 412 changer transitions 440/2454 dead transitions. [2023-12-09 15:14:55,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 2454 transitions, 53178 flow [2023-12-09 15:14:55,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-12-09 15:14:55,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-12-09 15:14:55,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 4191 transitions. [2023-12-09 15:14:55,933 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5452771272443404 [2023-12-09 15:14:55,933 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 4191 transitions. [2023-12-09 15:14:55,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 4191 transitions. [2023-12-09 15:14:55,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:14:55,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 4191 transitions. [2023-12-09 15:14:55,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 68.70491803278688) internal successors, (4191), 61 states have internal predecessors, (4191), 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 15:14:55,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 126.0) internal successors, (7812), 62 states have internal predecessors, (7812), 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 15:14:55,947 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 126.0) internal successors, (7812), 62 states have internal predecessors, (7812), 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 15:14:55,947 INFO L308 CegarLoopForPetriNet]: 113 programPoint places, 399 predicate places. [2023-12-09 15:14:55,947 INFO L500 AbstractCegarLoop]: Abstraction has has 512 places, 2454 transitions, 53178 flow [2023-12-09 15:14:55,948 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 67.97368421052632) internal successors, (2583), 38 states have internal predecessors, (2583), 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 15:14:55,948 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:14:55,948 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 15:14:55,956 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-09 15:14:56,152 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:56,153 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:14:56,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:14:56,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1022450465, now seen corresponding path program 5 times [2023-12-09 15:14:56,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:14:56,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041579497] [2023-12-09 15:14:56,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:14:56,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:14:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:14:56,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:56,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:14:56,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041579497] [2023-12-09 15:14:56,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041579497] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:14:56,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329033234] [2023-12-09 15:14:56,666 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:14:56,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:14:56,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:14:56,667 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:14:56,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-09 15:14:56,898 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-09 15:14:56,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:14:56,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-09 15:14:56,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:14:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:14:57,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:14:58,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:14:58,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329033234] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:14:58,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:14:58,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 35 [2023-12-09 15:14:58,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771493430] [2023-12-09 15:14:58,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:14:58,067 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-09 15:14:58,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:14:58,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-09 15:14:58,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1020, Unknown=0, NotChecked=0, Total=1190 [2023-12-09 15:14:58,069 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 126 [2023-12-09 15:14:58,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 2454 transitions, 53178 flow. Second operand has 35 states, 35 states have (on average 72.91428571428571) internal successors, (2552), 35 states have internal predecessors, (2552), 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 15:14:58,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:14:58,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 126 [2023-12-09 15:14:58,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:15:04,097 INFO L124 PetriNetUnfolderBase]: 2929/10106 cut-off events. [2023-12-09 15:15:04,098 INFO L125 PetriNetUnfolderBase]: For 122106/129496 co-relation queries the response was YES. [2023-12-09 15:15:04,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72204 conditions, 10106 events. 2929/10106 cut-off events. For 122106/129496 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 111380 event pairs, 139 based on Foata normal form. 585/9533 useless extension candidates. Maximal degree in co-relation 63211. Up to 4328 conditions per place. [2023-12-09 15:15:04,199 INFO L140 encePairwiseOnDemand]: 100/126 looper letters, 1814 selfloop transitions, 284 changer transitions 462/2639 dead transitions. [2023-12-09 15:15:04,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 2639 transitions, 62088 flow [2023-12-09 15:15:04,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-09 15:15:04,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-12-09 15:15:04,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 3713 transitions. [2023-12-09 15:15:04,203 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5893650793650793 [2023-12-09 15:15:04,203 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 3713 transitions. [2023-12-09 15:15:04,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 3713 transitions. [2023-12-09 15:15:04,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:15:04,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 3713 transitions. [2023-12-09 15:15:04,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 74.26) internal successors, (3713), 50 states have internal predecessors, (3713), 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 15:15:04,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 126.0) internal successors, (6426), 51 states have internal predecessors, (6426), 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 15:15:04,214 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 126.0) internal successors, (6426), 51 states have internal predecessors, (6426), 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 15:15:04,214 INFO L308 CegarLoopForPetriNet]: 113 programPoint places, 448 predicate places. [2023-12-09 15:15:04,214 INFO L500 AbstractCegarLoop]: Abstraction has has 561 places, 2639 transitions, 62088 flow [2023-12-09 15:15:04,215 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 72.91428571428571) internal successors, (2552), 35 states have internal predecessors, (2552), 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 15:15:04,215 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:15:04,215 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 15:15:04,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-09 15:15:04,416 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-09 15:15:04,416 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:15:04,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:15:04,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1988425609, now seen corresponding path program 6 times [2023-12-09 15:15:04,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:15:04,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068066672] [2023-12-09 15:15:04,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:15:04,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:15:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:15:04,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:15:04,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:15:04,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068066672] [2023-12-09 15:15:04,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068066672] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:15:04,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223607501] [2023-12-09 15:15:04,866 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:15:04,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:15:04,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:15:04,867 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:15:04,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-09 15:15:05,097 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-09 15:15:05,097 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:15:05,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-09 15:15:05,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:15:07,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:15:07,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:15:08,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:15:08,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223607501] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:15:08,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:15:08,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 38 [2023-12-09 15:15:08,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423648059] [2023-12-09 15:15:08,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:15:08,543 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-09 15:15:08,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:15:08,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-09 15:15:08,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1204, Unknown=1, NotChecked=0, Total=1406 [2023-12-09 15:15:08,545 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 126 [2023-12-09 15:15:08,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 2639 transitions, 62088 flow. Second operand has 38 states, 38 states have (on average 67.97368421052632) internal successors, (2583), 38 states have internal predecessors, (2583), 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 15:15:08,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:15:08,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 126 [2023-12-09 15:15:08,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:15:19,760 INFO L124 PetriNetUnfolderBase]: 4147/14539 cut-off events. [2023-12-09 15:15:19,760 INFO L125 PetriNetUnfolderBase]: For 202235/218485 co-relation queries the response was YES. [2023-12-09 15:15:19,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110400 conditions, 14539 events. 4147/14539 cut-off events. For 202235/218485 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 166539 event pairs, 198 based on Foata normal form. 1875/14740 useless extension candidates. Maximal degree in co-relation 85422. Up to 6331 conditions per place. [2023-12-09 15:15:19,905 INFO L140 encePairwiseOnDemand]: 95/126 looper letters, 2308 selfloop transitions, 827 changer transitions 632/3842 dead transitions. [2023-12-09 15:15:19,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 649 places, 3842 transitions, 96775 flow [2023-12-09 15:15:19,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-09 15:15:19,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2023-12-09 15:15:19,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 6145 transitions. [2023-12-09 15:15:19,910 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5479757446049581 [2023-12-09 15:15:19,910 INFO L72 ComplementDD]: Start complementDD. Operand 89 states and 6145 transitions. [2023-12-09 15:15:19,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 6145 transitions. [2023-12-09 15:15:19,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:15:19,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 89 states and 6145 transitions. [2023-12-09 15:15:19,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 90 states, 89 states have (on average 69.04494382022472) internal successors, (6145), 89 states have internal predecessors, (6145), 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 15:15:19,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 90 states, 90 states have (on average 126.0) internal successors, (11340), 90 states have internal predecessors, (11340), 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 15:15:19,925 INFO L81 ComplementDD]: Finished complementDD. Result has 90 states, 90 states have (on average 126.0) internal successors, (11340), 90 states have internal predecessors, (11340), 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 15:15:19,926 INFO L308 CegarLoopForPetriNet]: 113 programPoint places, 536 predicate places. [2023-12-09 15:15:19,926 INFO L500 AbstractCegarLoop]: Abstraction has has 649 places, 3842 transitions, 96775 flow [2023-12-09 15:15:19,926 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 67.97368421052632) internal successors, (2583), 38 states have internal predecessors, (2583), 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 15:15:19,926 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:15:19,926 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 15:15:19,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-09 15:15:20,131 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-09 15:15:20,133 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:15:20,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:15:20,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1974985383, now seen corresponding path program 7 times [2023-12-09 15:15:20,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:15:20,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859531772] [2023-12-09 15:15:20,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:15:20,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:15:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:15:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:15:20,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:15:20,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859531772] [2023-12-09 15:15:20,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859531772] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:15:20,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686829204] [2023-12-09 15:15:20,514 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:15:20,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:15:20,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:15:20,515 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:15:20,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-09 15:15:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:15:20,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 24 conjunts are in the unsatisfiable core [2023-12-09 15:15:20,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:15:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:15:21,259 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:15:21,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:15:21,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686829204] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:15:21,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:15:21,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 32 [2023-12-09 15:15:21,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945653918] [2023-12-09 15:15:21,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:15:21,551 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-09 15:15:21,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:15:21,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-09 15:15:21,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2023-12-09 15:15:21,552 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 126 [2023-12-09 15:15:21,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 3842 transitions, 96775 flow. Second operand has 32 states, 32 states have (on average 78.40625) internal successors, (2509), 32 states have internal predecessors, (2509), 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 15:15:21,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:15:21,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 126 [2023-12-09 15:15:21,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:15:37,648 INFO L124 PetriNetUnfolderBase]: 5644/19856 cut-off events. [2023-12-09 15:15:37,649 INFO L125 PetriNetUnfolderBase]: For 294174/310323 co-relation queries the response was YES. [2023-12-09 15:15:37,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158337 conditions, 19856 events. 5644/19856 cut-off events. For 294174/310323 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 237689 event pairs, 285 based on Foata normal form. 1409/18973 useless extension candidates. Maximal degree in co-relation 122526. Up to 8882 conditions per place. [2023-12-09 15:15:37,890 INFO L140 encePairwiseOnDemand]: 98/126 looper letters, 1522 selfloop transitions, 1251 changer transitions 796/4819 dead transitions. [2023-12-09 15:15:37,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 737 places, 4819 transitions, 127715 flow [2023-12-09 15:15:37,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-12-09 15:15:37,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2023-12-09 15:15:37,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 7095 transitions. [2023-12-09 15:15:37,906 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6326912787586945 [2023-12-09 15:15:37,906 INFO L72 ComplementDD]: Start complementDD. Operand 89 states and 7095 transitions. [2023-12-09 15:15:37,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 7095 transitions. [2023-12-09 15:15:37,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:15:37,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 89 states and 7095 transitions. [2023-12-09 15:15:37,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 90 states, 89 states have (on average 79.71910112359551) internal successors, (7095), 89 states have internal predecessors, (7095), 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 15:15:37,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 90 states, 90 states have (on average 126.0) internal successors, (11340), 90 states have internal predecessors, (11340), 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 15:15:37,934 INFO L81 ComplementDD]: Finished complementDD. Result has 90 states, 90 states have (on average 126.0) internal successors, (11340), 90 states have internal predecessors, (11340), 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 15:15:37,934 INFO L308 CegarLoopForPetriNet]: 113 programPoint places, 624 predicate places. [2023-12-09 15:15:37,935 INFO L500 AbstractCegarLoop]: Abstraction has has 737 places, 4819 transitions, 127715 flow [2023-12-09 15:15:37,935 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 78.40625) internal successors, (2509), 32 states have internal predecessors, (2509), 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 15:15:37,935 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:15:37,935 INFO L233 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:15:37,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-09 15:15:38,135 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-09 15:15:38,136 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:15:38,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:15:38,137 INFO L85 PathProgramCache]: Analyzing trace with hash 677616563, now seen corresponding path program 4 times [2023-12-09 15:15:38,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:15:38,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272068624] [2023-12-09 15:15:38,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:15:38,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:15:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:15:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:15:38,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:15:38,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272068624] [2023-12-09 15:15:38,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272068624] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:15:38,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214297356] [2023-12-09 15:15:38,267 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:15:38,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:15:38,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:15:38,268 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:15:38,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-09 15:15:38,355 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:15:38,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:15:38,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-09 15:15:38,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:15:38,589 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:15:38,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:15:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:15:38,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214297356] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:15:38,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:15:38,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 30 [2023-12-09 15:15:38,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492083353] [2023-12-09 15:15:38,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:15:38,747 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-12-09 15:15:38,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:15:38,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-12-09 15:15:38,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2023-12-09 15:15:38,749 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 126 [2023-12-09 15:15:38,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 737 places, 4819 transitions, 127715 flow. Second operand has 30 states, 30 states have (on average 81.63333333333334) internal successors, (2449), 30 states have internal predecessors, (2449), 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 15:15:38,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:15:38,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 126 [2023-12-09 15:15:38,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:16:29,408 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([300] L41-7-->L44: Formula: (= v_~i1~0_3 |v_thread1Thread1of1ForFork1_#t~post3_1|) InVars {~i1~0=v_~i1~0_3} OutVars{thread1Thread1of1ForFork1_#t~post3=|v_thread1Thread1of1ForFork1_#t~post3_1|, ~i1~0=v_~i1~0_3} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post3][1741], [60#L44true, 5296#true, 2200#true, 829#true, 3786#true, 2213#true, 167#(and (<= ~i1~0 ~i2~0) (<= (+ ~i1~0 1) ~n~0)), 150#(<= ~n~0 ~i2~0), 57#L76-4true, 7567#(and (not (= ~m~0 1)) (not (= (+ ~j1~0 1) ~m~0)) (= (+ ~k1~0 (* 4294967296 (div ~k2~0 4294967296))) (+ ~k2~0 (* (div ~k1~0 4294967296) 4294967296)))), 1516#true, 35#L51-3true, 169#true, 6733#(and (<= ~m~0 2147483647) (or (not (= (+ ~j1~0 1) ~m~0)) (= (+ ~k1~0 (* 4294967296 (div ~k2~0 4294967296)) 1) (+ ~k2~0 (* (div (+ ~k1~0 1) 4294967296) 4294967296)))) (or (not (= (+ ~j1~0 1) ~m~0)) (= (+ ~m~0 ~k2~0 (* (div (+ ~k1~0 1) 4294967296) 4294967296)) (+ (* (div (+ ~m~0 ~k2~0) 4294967296) 4294967296) ~k1~0 1)))), 2189#true, thread1Thread1of1ForFork1InUse, 2979#true, 127#true, 5224#(and (<= ~m~0 2147483647) (or (not (= (+ ~j1~0 1) ~m~0)) (= (+ ~m~0 ~k2~0 (* (div (+ ~k1~0 1) 4294967296) 4294967296)) (+ (* (div (+ ~m~0 ~k2~0) 4294967296) 4294967296) ~k1~0 1)))), thread2Thread1of1ForFork0InUse, 8441#(and (<= (+ |thread1Thread1of1ForFork1_#t~post3| 1) ~i2~0) (<= (+ ~i1~0 1) ~i2~0) (<= (+ ~i1~0 1) ~n~0))]) [2023-12-09 15:16:29,408 INFO L294 olderBase$Statistics]: this new event has 109 ancestors and is cut-off event [2023-12-09 15:16:29,408 INFO L297 olderBase$Statistics]: existing Event has 103 ancestors and is cut-off event [2023-12-09 15:16:29,408 INFO L297 olderBase$Statistics]: existing Event has 103 ancestors and is cut-off event [2023-12-09 15:16:29,408 INFO L297 olderBase$Statistics]: existing Event has 97 ancestors and is cut-off event [2023-12-09 15:17:00,972 INFO L124 PetriNetUnfolderBase]: 21363/63676 cut-off events. [2023-12-09 15:17:00,973 INFO L125 PetriNetUnfolderBase]: For 944711/977342 co-relation queries the response was YES. [2023-12-09 15:17:01,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543985 conditions, 63676 events. 21363/63676 cut-off events. For 944711/977342 co-relation queries the response was YES. Maximal size of possible extension queue 1946. Compared 842921 event pairs, 344 based on Foata normal form. 1374/57678 useless extension candidates. Maximal degree in co-relation 496081. Up to 28888 conditions per place. [2023-12-09 15:17:02,133 INFO L140 encePairwiseOnDemand]: 104/126 looper letters, 3693 selfloop transitions, 4448 changer transitions 2380/12628 dead transitions. [2023-12-09 15:17:02,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 12628 transitions, 368437 flow [2023-12-09 15:17:02,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-12-09 15:17:02,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2023-12-09 15:17:02,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 7067 transitions. [2023-12-09 15:17:02,139 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6521779254337394 [2023-12-09 15:17:02,139 INFO L72 ComplementDD]: Start complementDD. Operand 86 states and 7067 transitions. [2023-12-09 15:17:02,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 7067 transitions. [2023-12-09 15:17:02,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:17:02,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 86 states and 7067 transitions. [2023-12-09 15:17:02,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 87 states, 86 states have (on average 82.17441860465117) internal successors, (7067), 86 states have internal predecessors, (7067), 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 15:17:02,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 87 states, 87 states have (on average 126.0) internal successors, (10962), 87 states have internal predecessors, (10962), 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 15:17:02,157 INFO L81 ComplementDD]: Finished complementDD. Result has 87 states, 87 states have (on average 126.0) internal successors, (10962), 87 states have internal predecessors, (10962), 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 15:17:02,157 INFO L308 CegarLoopForPetriNet]: 113 programPoint places, 709 predicate places. [2023-12-09 15:17:02,157 INFO L500 AbstractCegarLoop]: Abstraction has has 822 places, 12628 transitions, 368437 flow [2023-12-09 15:17:02,158 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 81.63333333333334) internal successors, (2449), 30 states have internal predecessors, (2449), 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 15:17:02,158 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:17:02,158 INFO L233 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-12-09 15:17:02,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-09 15:17:02,362 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-09 15:17:02,362 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:17:02,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:17:02,363 INFO L85 PathProgramCache]: Analyzing trace with hash 426160653, now seen corresponding path program 8 times [2023-12-09 15:17:02,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:17:02,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311166212] [2023-12-09 15:17:02,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:17:02,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:17:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:17:02,479 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:17:02,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:17:02,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311166212] [2023-12-09 15:17:02,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311166212] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:17:02,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534762592] [2023-12-09 15:17:02,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:17:02,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:17:02,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:17:02,480 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:17:02,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-09 15:17:02,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:17:02,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:17:02,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-09 15:17:02,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:17:02,710 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:17:02,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:17:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:17:02,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534762592] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:17:02,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:17:02,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2023-12-09 15:17:02,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726240155] [2023-12-09 15:17:02,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:17:02,787 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-09 15:17:02,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:17:02,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-09 15:17:02,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-12-09 15:17:02,789 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 126 [2023-12-09 15:17:02,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 822 places, 12628 transitions, 368437 flow. Second operand has 18 states, 18 states have (on average 81.72222222222223) internal successors, (1471), 18 states have internal predecessors, (1471), 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 15:17:02,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:17:02,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 126 [2023-12-09 15:17:02,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-12-09 15:18:23,851 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 15:18:23,861 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:18:23,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-09 15:18:23,897 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 15:18:23,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-09 15:18:24,097 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-09 15:18:24,098 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 78/126 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 150913 conditions, 16754 events (5688/16753 cut-off events. For 264079/278750 co-relation queries the response was YES. Maximal size of possible extension queue 1764. Compared 220583 event pairs, 62 based on Foata normal form. 757/17174 useless extension candidates. Maximal degree in co-relation 143292. Up to 7665 conditions per place.). [2023-12-09 15:18:24,099 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 15:18:24,099 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 15:18:24,100 INFO L457 BasicCegarLoop]: Path program histogram: [8, 4, 2, 2, 1] [2023-12-09 15:18:24,102 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:18:24,102 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:18:24,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:18:24 BasicIcfg [2023-12-09 15:18:24,105 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:18:24,105 INFO L158 Benchmark]: Toolchain (without parser) took 253099.12ms. Allocated memory was 212.9MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 160.9MB in the beginning and 886.9MB in the end (delta: -726.0MB). Peak memory consumption was 2.2GB. Max. memory is 8.0GB. [2023-12-09 15:18:24,105 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 212.9MB. Free memory is still 160.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:18:24,106 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.69ms. Allocated memory is still 212.9MB. Free memory was 160.5MB in the beginning and 149.6MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-09 15:18:24,106 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.05ms. Allocated memory is still 212.9MB. Free memory was 149.6MB in the beginning and 147.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 15:18:24,106 INFO L158 Benchmark]: Boogie Preprocessor took 17.17ms. Allocated memory is still 212.9MB. Free memory was 147.9MB in the beginning and 146.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:18:24,106 INFO L158 Benchmark]: RCFGBuilder took 297.49ms. Allocated memory is still 212.9MB. Free memory was 146.5MB in the beginning and 132.2MB in the end (delta: 14.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-12-09 15:18:24,106 INFO L158 Benchmark]: TraceAbstraction took 252575.14ms. Allocated memory was 212.9MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 131.5MB in the beginning and 886.9MB in the end (delta: -755.4MB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2023-12-09 15:18:24,107 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 212.9MB. Free memory is still 160.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 179.69ms. Allocated memory is still 212.9MB. Free memory was 160.5MB in the beginning and 149.6MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.05ms. Allocated memory is still 212.9MB. Free memory was 149.6MB in the beginning and 147.9MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.17ms. Allocated memory is still 212.9MB. Free memory was 147.9MB in the beginning and 146.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 297.49ms. Allocated memory is still 212.9MB. Free memory was 146.5MB in the beginning and 132.2MB in the end (delta: 14.3MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 252575.14ms. Allocated memory was 212.9MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 131.5MB in the beginning and 886.9MB in the end (delta: -755.4MB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 78/126 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 150913 conditions, 16754 events (5688/16753 cut-off events. For 264079/278750 co-relation queries the response was YES. Maximal size of possible extension queue 1764. Compared 220583 event pairs, 62 based on Foata normal form. 757/17174 useless extension candidates. Maximal degree in co-relation 143292. Up to 7665 conditions per place.). - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 78/126 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 150913 conditions, 16754 events (5688/16753 cut-off events. For 264079/278750 co-relation queries the response was YES. Maximal size of possible extension queue 1764. Compared 220583 event pairs, 62 based on Foata normal form. 757/17174 useless extension candidates. Maximal degree in co-relation 143292. Up to 7665 conditions per place.). - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 78/126 universal loopers) in iteration 17,while PetriNetUnfolder was constructing finite prefix that currently has 150913 conditions, 16754 events (5688/16753 cut-off events. For 264079/278750 co-relation queries the response was YES. Maximal size of possible extension queue 1764. Compared 220583 event pairs, 62 based on Foata normal form. 757/17174 useless extension candidates. Maximal degree in co-relation 143292. Up to 7665 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 145 locations, 3 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: 252.5s, OverallIterations: 17, TraceHistogramMax: 3, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 228.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3884 SdHoareTripleChecker+Valid, 11.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3884 mSDsluCounter, 6907 SdHoareTripleChecker+Invalid, 10.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6198 mSDsCounter, 573 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15152 IncrementalHoareTripleChecker+Invalid, 15725 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 573 mSolverCounterUnsat, 709 mSDtfsCounter, 15152 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3292 GetRequests, 2300 SyntacticMatches, 23 SemanticMatches, 969 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23893 ImplicationChecksByTransitivity, 28.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=368437occurred in iteration=16, InterpolantAutomatonStates: 727, 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, 1.7s SatisfiabilityAnalysisTime, 19.1s InterpolantComputationTime, 2994 NumberOfCodeBlocks, 2994 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 4212 ConstructedInterpolants, 0 QuantifiedInterpolants, 39357 SizeOfPredicates, 200 NumberOfNonLiveVariables, 2644 ConjunctsInSsa, 243 ConjunctsInUnsatCore, 41 InterpolantComputations, 5 PerfectInterpolantSequences, 43/171 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