/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/popl20-prod-cons.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:31:48,139 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:31:48,201 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 15:31:48,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:31:48,231 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:31:48,231 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:31:48,232 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:31:48,232 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:31:48,232 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:31:48,235 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:31:48,236 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:31:48,236 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:31:48,236 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:31:48,237 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:31:48,237 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:31:48,237 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:31:48,238 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:31:48,238 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:31:48,238 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:31:48,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:31:48,238 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:31:48,239 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:31:48,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:31:48,239 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:31:48,239 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:31:48,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:31:48,240 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:31:48,240 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:31:48,240 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:31:48,240 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:31:48,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:31:48,241 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:31:48,241 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:31:48,241 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:31:48,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:31:48,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:31:48,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:31:48,454 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:31:48,456 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:31:48,458 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons.wvr.c [2023-12-09 15:31:49,527 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:31:49,665 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:31:49,665 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons.wvr.c [2023-12-09 15:31:49,672 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26af468eb/7c293291c670447bb88f62f8829f9387/FLAGcd2901f80 [2023-12-09 15:31:49,683 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26af468eb/7c293291c670447bb88f62f8829f9387 [2023-12-09 15:31:49,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:31:49,686 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:31:49,686 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:31:49,687 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:31:49,690 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:31:49,690 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:31:49" (1/1) ... [2023-12-09 15:31:49,691 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:31:49, skipping insertion in model container [2023-12-09 15:31:49,691 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:31:49" (1/1) ... [2023-12-09 15:31:49,713 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:31:49,822 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/popl20-prod-cons.wvr.c[3095,3108] [2023-12-09 15:31:49,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:31:49,835 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:31:49,850 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/popl20-prod-cons.wvr.c[3095,3108] [2023-12-09 15:31:49,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:31:49,858 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:31:49,858 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:31:49,863 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:31:49,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:31:49 WrapperNode [2023-12-09 15:31:49,864 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:31:49,864 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:31:49,864 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:31:49,864 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:31:49,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:31:49" (1/1) ... [2023-12-09 15:31:49,875 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:31:49" (1/1) ... [2023-12-09 15:31:49,894 INFO L138 Inliner]: procedures = 25, calls = 50, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 173 [2023-12-09 15:31:49,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:31:49,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:31:49,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:31:49,895 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:31:49,902 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:31:49" (1/1) ... [2023-12-09 15:31:49,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:31:49" (1/1) ... [2023-12-09 15:31:49,904 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:31:49" (1/1) ... [2023-12-09 15:31:49,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:31:49" (1/1) ... [2023-12-09 15:31:49,909 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:31:49" (1/1) ... [2023-12-09 15:31:49,912 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:31:49" (1/1) ... [2023-12-09 15:31:49,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:31:49" (1/1) ... [2023-12-09 15:31:49,914 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:31:49" (1/1) ... [2023-12-09 15:31:49,915 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:31:49,916 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:31:49,916 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:31:49,916 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:31:49,917 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:31:49" (1/1) ... [2023-12-09 15:31:49,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:31:49,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:31:49,974 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 15:31:50,004 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 15:31:50,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:31:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:31:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:31:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:31:50,011 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:31:50,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:31:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:31:50,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:31:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-09 15:31:50,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-09 15:31:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:31:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 15:31:50,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 15:31:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-09 15:31:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:31:50,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:31:50,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:31:50,015 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 15:31:50,120 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:31:50,121 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:31:50,367 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:31:50,422 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:31:50,422 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-12-09 15:31:50,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:31:50 BoogieIcfgContainer [2023-12-09 15:31:50,423 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:31:50,424 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:31:50,424 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:31:50,426 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:31:50,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:31:49" (1/3) ... [2023-12-09 15:31:50,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542cf482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:31:50, skipping insertion in model container [2023-12-09 15:31:50,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:31:49" (2/3) ... [2023-12-09 15:31:50,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542cf482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:31:50, skipping insertion in model container [2023-12-09 15:31:50,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:31:50" (3/3) ... [2023-12-09 15:31:50,428 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons.wvr.c [2023-12-09 15:31:50,439 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:31:50,439 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:31:50,439 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:31:50,506 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-12-09 15:31:50,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 161 transitions, 343 flow [2023-12-09 15:31:50,604 INFO L124 PetriNetUnfolderBase]: 11/158 cut-off events. [2023-12-09 15:31:50,604 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-12-09 15:31:50,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 158 events. 11/158 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 97 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 126. Up to 3 conditions per place. [2023-12-09 15:31:50,613 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 161 transitions, 343 flow [2023-12-09 15:31:50,619 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 147 transitions, 312 flow [2023-12-09 15:31:50,625 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:31:50,629 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;@136262ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:31:50,630 INFO L363 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-12-09 15:31:50,653 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:31:50,653 INFO L124 PetriNetUnfolderBase]: 11/146 cut-off events. [2023-12-09 15:31:50,653 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-12-09 15:31:50,654 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:31:50,654 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:31:50,655 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:31:50,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:31:50,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1053911672, now seen corresponding path program 1 times [2023-12-09 15:31:50,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:31:50,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974683858] [2023-12-09 15:31:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:31:50,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:31:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:31:51,055 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 15:31:51,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:31:51,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974683858] [2023-12-09 15:31:51,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974683858] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:31:51,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:31:51,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-09 15:31:51,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377650384] [2023-12-09 15:31:51,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:31:51,063 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-09 15:31:51,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:31:51,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-09 15:31:51,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-09 15:31:51,093 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 161 [2023-12-09 15:31:51,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 147 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:31:51,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:31:51,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 161 [2023-12-09 15:31:51,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:31:51,240 INFO L124 PetriNetUnfolderBase]: 108/360 cut-off events. [2023-12-09 15:31:51,241 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-12-09 15:31:51,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 360 events. 108/360 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1258 event pairs, 4 based on Foata normal form. 38/379 useless extension candidates. Maximal degree in co-relation 459. Up to 61 conditions per place. [2023-12-09 15:31:51,248 INFO L140 encePairwiseOnDemand]: 149/161 looper letters, 30 selfloop transitions, 5 changer transitions 4/158 dead transitions. [2023-12-09 15:31:51,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 158 transitions, 416 flow [2023-12-09 15:31:51,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-09 15:31:51,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-12-09 15:31:51,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 729 transitions. [2023-12-09 15:31:51,264 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9055900621118013 [2023-12-09 15:31:51,265 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 729 transitions. [2023-12-09 15:31:51,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 729 transitions. [2023-12-09 15:31:51,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:31:51,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 729 transitions. [2023-12-09 15:31:51,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 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 15:31:51,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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 15:31:51,281 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 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 15:31:51,284 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 4 predicate places. [2023-12-09 15:31:51,284 INFO L500 AbstractCegarLoop]: Abstraction has has 150 places, 158 transitions, 416 flow [2023-12-09 15:31:51,285 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:31:51,285 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:31:51,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:31:51,286 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:31:51,286 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:31:51,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:31:51,288 INFO L85 PathProgramCache]: Analyzing trace with hash -943433404, now seen corresponding path program 2 times [2023-12-09 15:31:51,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:31:51,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463155384] [2023-12-09 15:31:51,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:31:51,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:31:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:31:51,731 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 15:31:51,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:31:51,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463155384] [2023-12-09 15:31:51,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463155384] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:31:51,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:31:51,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-09 15:31:51,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546101774] [2023-12-09 15:31:51,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:31:51,734 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-09 15:31:51,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:31:51,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-09 15:31:51,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-09 15:31:51,738 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 161 [2023-12-09 15:31:51,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 158 transitions, 416 flow. Second operand has 8 states, 8 states have (on average 108.875) internal successors, (871), 8 states have internal predecessors, (871), 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 15:31:51,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:31:51,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 161 [2023-12-09 15:31:51,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:31:52,007 INFO L124 PetriNetUnfolderBase]: 223/658 cut-off events. [2023-12-09 15:31:52,007 INFO L125 PetriNetUnfolderBase]: For 241/311 co-relation queries the response was YES. [2023-12-09 15:31:52,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1522 conditions, 658 events. 223/658 cut-off events. For 241/311 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3607 event pairs, 17 based on Foata normal form. 3/630 useless extension candidates. Maximal degree in co-relation 1333. Up to 144 conditions per place. [2023-12-09 15:31:52,013 INFO L140 encePairwiseOnDemand]: 148/161 looper letters, 82 selfloop transitions, 11 changer transitions 9/193 dead transitions. [2023-12-09 15:31:52,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 193 transitions, 771 flow [2023-12-09 15:31:52,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-09 15:31:52,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-12-09 15:31:52,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1218 transitions. [2023-12-09 15:31:52,015 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6877470355731226 [2023-12-09 15:31:52,015 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1218 transitions. [2023-12-09 15:31:52,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1218 transitions. [2023-12-09 15:31:52,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:31:52,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1218 transitions. [2023-12-09 15:31:52,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 110.72727272727273) internal successors, (1218), 11 states have internal predecessors, (1218), 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 15:31:52,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 161.0) internal successors, (1932), 12 states have internal predecessors, (1932), 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 15:31:52,021 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 161.0) internal successors, (1932), 12 states have internal predecessors, (1932), 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 15:31:52,021 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 14 predicate places. [2023-12-09 15:31:52,022 INFO L500 AbstractCegarLoop]: Abstraction has has 160 places, 193 transitions, 771 flow [2023-12-09 15:31:52,022 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 108.875) internal successors, (871), 8 states have internal predecessors, (871), 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 15:31:52,022 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:31:52,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:31:52,023 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:31:52,023 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:31:52,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:31:52,024 INFO L85 PathProgramCache]: Analyzing trace with hash -320466785, now seen corresponding path program 1 times [2023-12-09 15:31:52,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:31:52,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657140304] [2023-12-09 15:31:52,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:31:52,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:31:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:31:52,110 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 15:31:52,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:31:52,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657140304] [2023-12-09 15:31:52,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657140304] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:31:52,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:31:52,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-09 15:31:52,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460297504] [2023-12-09 15:31:52,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:31:52,113 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-09 15:31:52,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:31:52,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-09 15:31:52,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-09 15:31:52,117 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 161 [2023-12-09 15:31:52,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 193 transitions, 771 flow. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 15:31:52,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:31:52,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 161 [2023-12-09 15:31:52,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:31:52,188 INFO L124 PetriNetUnfolderBase]: 203/609 cut-off events. [2023-12-09 15:31:52,189 INFO L125 PetriNetUnfolderBase]: For 620/745 co-relation queries the response was YES. [2023-12-09 15:31:52,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1559 conditions, 609 events. 203/609 cut-off events. For 620/745 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3052 event pairs, 14 based on Foata normal form. 18/590 useless extension candidates. Maximal degree in co-relation 1337. Up to 148 conditions per place. [2023-12-09 15:31:52,193 INFO L140 encePairwiseOnDemand]: 158/161 looper letters, 35 selfloop transitions, 6 changer transitions 14/204 dead transitions. [2023-12-09 15:31:52,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 204 transitions, 967 flow [2023-12-09 15:31:52,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-09 15:31:52,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-12-09 15:31:52,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-12-09 15:31:52,195 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.9109730848861284 [2023-12-09 15:31:52,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-12-09 15:31:52,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-12-09 15:31:52,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:31:52,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-12-09 15:31:52,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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 15:31:52,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:31:52,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-09 15:31:52,199 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 16 predicate places. [2023-12-09 15:31:52,199 INFO L500 AbstractCegarLoop]: Abstraction has has 162 places, 204 transitions, 967 flow [2023-12-09 15:31:52,199 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 15:31:52,199 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:31:52,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:31:52,199 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-09 15:31:52,200 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:31:52,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:31:52,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1549944308, now seen corresponding path program 1 times [2023-12-09 15:31:52,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:31:52,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993556445] [2023-12-09 15:31:52,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:31:52,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:31:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:31:52,315 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 15:31:52,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:31:52,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993556445] [2023-12-09 15:31:52,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993556445] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:31:52,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:31:52,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:31:52,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032096332] [2023-12-09 15:31:52,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:31:52,318 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:31:52,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:31:52,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:31:52,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:31:52,321 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 161 [2023-12-09 15:31:52,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 204 transitions, 967 flow. Second operand has 6 states, 6 states have (on average 131.5) internal successors, (789), 6 states have internal predecessors, (789), 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 15:31:52,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:31:52,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 161 [2023-12-09 15:31:52,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:31:52,486 INFO L124 PetriNetUnfolderBase]: 245/794 cut-off events. [2023-12-09 15:31:52,486 INFO L125 PetriNetUnfolderBase]: For 1425/1598 co-relation queries the response was YES. [2023-12-09 15:31:52,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2152 conditions, 794 events. 245/794 cut-off events. For 1425/1598 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4312 event pairs, 18 based on Foata normal form. 15/751 useless extension candidates. Maximal degree in co-relation 1468. Up to 210 conditions per place. [2023-12-09 15:31:52,491 INFO L140 encePairwiseOnDemand]: 150/161 looper letters, 50 selfloop transitions, 8 changer transitions 27/221 dead transitions. [2023-12-09 15:31:52,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 221 transitions, 1244 flow [2023-12-09 15:31:52,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-09 15:31:52,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-12-09 15:31:52,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1190 transitions. [2023-12-09 15:31:52,494 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.821256038647343 [2023-12-09 15:31:52,494 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1190 transitions. [2023-12-09 15:31:52,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1190 transitions. [2023-12-09 15:31:52,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:31:52,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1190 transitions. [2023-12-09 15:31:52,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 132.22222222222223) internal successors, (1190), 9 states have internal predecessors, (1190), 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 15:31:52,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 161.0) internal successors, (1610), 10 states have internal predecessors, (1610), 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 15:31:52,501 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 161.0) internal successors, (1610), 10 states have internal predecessors, (1610), 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 15:31:52,503 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 24 predicate places. [2023-12-09 15:31:52,503 INFO L500 AbstractCegarLoop]: Abstraction has has 170 places, 221 transitions, 1244 flow [2023-12-09 15:31:52,503 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.5) internal successors, (789), 6 states have internal predecessors, (789), 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 15:31:52,503 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:31:52,503 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, 1, 1, 1, 1, 1, 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 15:31:52,503 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-09 15:31:52,503 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:31:52,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:31:52,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1619882128, now seen corresponding path program 1 times [2023-12-09 15:31:52,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:31:52,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926578983] [2023-12-09 15:31:52,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:31:52,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:31:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:31:53,508 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 15:31:53,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:31:53,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926578983] [2023-12-09 15:31:53,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926578983] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:31:53,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357308866] [2023-12-09 15:31:53,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:31:53,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:31:53,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:31:53,511 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 15:31:53,556 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 15:31:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:31:53,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 54 conjunts are in the unsatisfiable core [2023-12-09 15:31:53,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:31:53,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-09 15:31:53,758 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-12-09 15:31:53,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-12-09 15:31:54,181 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-12-09 15:31:54,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2023-12-09 15:31:54,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-12-09 15:31:54,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:31:54,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:31:54,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-09 15:31:55,521 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 15:31:55,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:31:57,325 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:31:57,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 56 [2023-12-09 15:31:57,336 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:31:57,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 644 treesize of output 620 [2023-12-09 15:31:57,358 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:31:57,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 296 treesize of output 256 [2023-12-09 15:31:57,375 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:31:57,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 178 [2023-12-09 15:31:57,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:31:57,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 181 treesize of output 165 [2023-12-09 15:31:58,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-12-09 15:31:58,921 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 15:31:58,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357308866] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:31:58,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:31:58,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 31, 29] total 75 [2023-12-09 15:31:58,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528260800] [2023-12-09 15:31:58,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:31:58,922 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2023-12-09 15:31:58,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:31:58,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2023-12-09 15:31:58,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=764, Invalid=4733, Unknown=53, NotChecked=0, Total=5550 [2023-12-09 15:31:58,929 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 161 [2023-12-09 15:31:58,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 221 transitions, 1244 flow. Second operand has 75 states, 75 states have (on average 71.62666666666667) internal successors, (5372), 75 states have internal predecessors, (5372), 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 15:31:58,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:31:58,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 161 [2023-12-09 15:31:58,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:12,472 INFO L124 PetriNetUnfolderBase]: 7119/13428 cut-off events. [2023-12-09 15:32:12,472 INFO L125 PetriNetUnfolderBase]: For 16092/16182 co-relation queries the response was YES. [2023-12-09 15:32:12,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39963 conditions, 13428 events. 7119/13428 cut-off events. For 16092/16182 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 109624 event pairs, 338 based on Foata normal form. 12/12596 useless extension candidates. Maximal degree in co-relation 27316. Up to 2128 conditions per place. [2023-12-09 15:32:12,552 INFO L140 encePairwiseOnDemand]: 114/161 looper letters, 404 selfloop transitions, 215 changer transitions 752/1430 dead transitions. [2023-12-09 15:32:12,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 1430 transitions, 10524 flow [2023-12-09 15:32:12,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 149 states. [2023-12-09 15:32:12,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2023-12-09 15:32:12,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 11363 transitions. [2023-12-09 15:32:12,571 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4736754345741798 [2023-12-09 15:32:12,571 INFO L72 ComplementDD]: Start complementDD. Operand 149 states and 11363 transitions. [2023-12-09 15:32:12,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 149 states and 11363 transitions. [2023-12-09 15:32:12,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:12,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 149 states and 11363 transitions. [2023-12-09 15:32:12,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 150 states, 149 states have (on average 76.26174496644295) internal successors, (11363), 149 states have internal predecessors, (11363), 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 15:32:12,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 150 states, 150 states have (on average 161.0) internal successors, (24150), 150 states have internal predecessors, (24150), 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 15:32:12,624 INFO L81 ComplementDD]: Finished complementDD. Result has 150 states, 150 states have (on average 161.0) internal successors, (24150), 150 states have internal predecessors, (24150), 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 15:32:12,626 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 172 predicate places. [2023-12-09 15:32:12,626 INFO L500 AbstractCegarLoop]: Abstraction has has 318 places, 1430 transitions, 10524 flow [2023-12-09 15:32:12,637 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 71.62666666666667) internal successors, (5372), 75 states have internal predecessors, (5372), 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 15:32:12,638 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:12,638 INFO L233 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 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 15:32:12,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-09 15:32:12,843 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:32:12,844 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:32:12,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:12,845 INFO L85 PathProgramCache]: Analyzing trace with hash -431673351, now seen corresponding path program 2 times [2023-12-09 15:32:12,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:12,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168855233] [2023-12-09 15:32:12,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:12,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:32:13,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:13,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168855233] [2023-12-09 15:32:13,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168855233] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:32:13,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644713917] [2023-12-09 15:32:13,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:32:13,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:32:13,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:32:13,177 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 15:32:13,189 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 15:32:13,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:32:13,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:32:13,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-09 15:32:13,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:32:13,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:32:13,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:32:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:32:13,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644713917] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:32:13,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:32:13,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 5] total 14 [2023-12-09 15:32:13,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133076958] [2023-12-09 15:32:13,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:32:13,642 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:32:13,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:13,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:32:13,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:32:13,643 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 161 [2023-12-09 15:32:13,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 1430 transitions, 10524 flow. Second operand has 14 states, 14 states have (on average 128.64285714285714) internal successors, (1801), 14 states have internal predecessors, (1801), 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 15:32:13,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:13,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 161 [2023-12-09 15:32:13,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:15,951 INFO L124 PetriNetUnfolderBase]: 10755/20404 cut-off events. [2023-12-09 15:32:15,951 INFO L125 PetriNetUnfolderBase]: For 37813/37919 co-relation queries the response was YES. [2023-12-09 15:32:16,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62358 conditions, 20404 events. 10755/20404 cut-off events. For 37813/37919 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 175740 event pairs, 672 based on Foata normal form. 509/19599 useless extension candidates. Maximal degree in co-relation 31665. Up to 3280 conditions per place. [2023-12-09 15:32:16,092 INFO L140 encePairwiseOnDemand]: 144/161 looper letters, 129 selfloop transitions, 55 changer transitions 1044/1542 dead transitions. [2023-12-09 15:32:16,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 1542 transitions, 13490 flow [2023-12-09 15:32:16,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-12-09 15:32:16,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-12-09 15:32:16,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2665 transitions. [2023-12-09 15:32:16,095 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7882283348121858 [2023-12-09 15:32:16,095 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2665 transitions. [2023-12-09 15:32:16,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2665 transitions. [2023-12-09 15:32:16,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:16,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2665 transitions. [2023-12-09 15:32:16,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 126.9047619047619) internal successors, (2665), 21 states have internal predecessors, (2665), 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 15:32:16,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 161.0) internal successors, (3542), 22 states have internal predecessors, (3542), 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 15:32:16,101 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 161.0) internal successors, (3542), 22 states have internal predecessors, (3542), 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 15:32:16,101 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 192 predicate places. [2023-12-09 15:32:16,102 INFO L500 AbstractCegarLoop]: Abstraction has has 338 places, 1542 transitions, 13490 flow [2023-12-09 15:32:16,102 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 128.64285714285714) internal successors, (1801), 14 states have internal predecessors, (1801), 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 15:32:16,102 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:16,102 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:16,123 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 15:32:16,307 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-09 15:32:16,307 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:32:16,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:16,310 INFO L85 PathProgramCache]: Analyzing trace with hash -780233614, now seen corresponding path program 3 times [2023-12-09 15:32:16,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:16,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314241435] [2023-12-09 15:32:16,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:16,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:17,748 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:17,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:17,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314241435] [2023-12-09 15:32:17,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314241435] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:32:17,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699407212] [2023-12-09 15:32:17,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:32:17,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:32:17,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:32:17,751 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 15:32:17,768 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 15:32:17,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-09 15:32:17,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:32:17,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-09 15:32:17,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:32:18,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:32:18,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-12-09 15:32:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:32:18,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:32:19,010 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:32:19,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 42 [2023-12-09 15:32:19,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-12-09 15:32:19,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:32:19,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699407212] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:32:19,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:32:19,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21, 21] total 61 [2023-12-09 15:32:19,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831638891] [2023-12-09 15:32:19,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:32:19,774 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2023-12-09 15:32:19,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:19,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2023-12-09 15:32:19,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=3360, Unknown=18, NotChecked=0, Total=3660 [2023-12-09 15:32:19,782 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 161 [2023-12-09 15:32:19,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 1542 transitions, 13490 flow. Second operand has 61 states, 61 states have (on average 74.27868852459017) internal successors, (4531), 61 states have internal predecessors, (4531), 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 15:32:19,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:19,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 161 [2023-12-09 15:32:19,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:32:35,164 INFO L124 PetriNetUnfolderBase]: 25380/47470 cut-off events. [2023-12-09 15:32:35,164 INFO L125 PetriNetUnfolderBase]: For 80593/82845 co-relation queries the response was YES. [2023-12-09 15:32:35,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186329 conditions, 47470 events. 25380/47470 cut-off events. For 80593/82845 co-relation queries the response was YES. Maximal size of possible extension queue 1656. Compared 462874 event pairs, 818 based on Foata normal form. 543/45259 useless extension candidates. Maximal degree in co-relation 102007. Up to 7923 conditions per place. [2023-12-09 15:32:35,436 INFO L140 encePairwiseOnDemand]: 120/161 looper letters, 806 selfloop transitions, 293 changer transitions 3413/4571 dead transitions. [2023-12-09 15:32:35,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 4571 transitions, 47575 flow [2023-12-09 15:32:35,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2023-12-09 15:32:35,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2023-12-09 15:32:35,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 12279 transitions. [2023-12-09 15:32:35,447 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4827030426920355 [2023-12-09 15:32:35,447 INFO L72 ComplementDD]: Start complementDD. Operand 158 states and 12279 transitions. [2023-12-09 15:32:35,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 158 states and 12279 transitions. [2023-12-09 15:32:35,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:32:35,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 158 states and 12279 transitions. [2023-12-09 15:32:35,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 159 states, 158 states have (on average 77.71518987341773) internal successors, (12279), 158 states have internal predecessors, (12279), 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 15:32:35,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 159 states, 159 states have (on average 161.0) internal successors, (25599), 159 states have internal predecessors, (25599), 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 15:32:35,504 INFO L81 ComplementDD]: Finished complementDD. Result has 159 states, 159 states have (on average 161.0) internal successors, (25599), 159 states have internal predecessors, (25599), 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 15:32:35,504 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 349 predicate places. [2023-12-09 15:32:35,504 INFO L500 AbstractCegarLoop]: Abstraction has has 495 places, 4571 transitions, 47575 flow [2023-12-09 15:32:35,505 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 74.27868852459017) internal successors, (4531), 61 states have internal predecessors, (4531), 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 15:32:35,505 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:32:35,506 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:32:35,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-09 15:32:35,711 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:32:35,711 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:32:35,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:32:35,712 INFO L85 PathProgramCache]: Analyzing trace with hash 356946034, now seen corresponding path program 4 times [2023-12-09 15:32:35,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:32:35,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224109680] [2023-12-09 15:32:35,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:32:35,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:32:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:32:37,621 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:32:37,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:32:37,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224109680] [2023-12-09 15:32:37,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224109680] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:32:37,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226346070] [2023-12-09 15:32:37,622 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:32:37,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:32:37,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:32:37,623 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 15:32:37,623 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 15:32:37,752 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:32:37,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:32:37,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 37 conjunts are in the unsatisfiable core [2023-12-09 15:32:37,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:32:38,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:32:38,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-12-09 15:32:38,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-09 15:32:38,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-12-09 15:32:39,029 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-09 15:32:39,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:32:39,152 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_201 (Array Int Int))) (< (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_201) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))) c_~d~0) (+ c_~W~0 1))) is different from false [2023-12-09 15:32:39,291 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-09 15:32:39,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 88 [2023-12-09 15:32:39,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 30 [2023-12-09 15:32:39,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 50 [2023-12-09 15:32:40,259 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-09 15:32:40,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226346070] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:32:40,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:32:40,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 23] total 68 [2023-12-09 15:32:40,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907168138] [2023-12-09 15:32:40,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:32:40,262 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-12-09 15:32:40,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:32:40,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-12-09 15:32:40,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=4065, Unknown=16, NotChecked=130, Total=4556 [2023-12-09 15:32:40,272 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 161 [2023-12-09 15:32:40,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 4571 transitions, 47575 flow. Second operand has 68 states, 68 states have (on average 76.97058823529412) internal successors, (5234), 68 states have internal predecessors, (5234), 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 15:32:40,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:32:40,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 161 [2023-12-09 15:32:40,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:33:07,522 INFO L124 PetriNetUnfolderBase]: 31089/57923 cut-off events. [2023-12-09 15:33:07,523 INFO L125 PetriNetUnfolderBase]: For 108743/113562 co-relation queries the response was YES. [2023-12-09 15:33:07,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277516 conditions, 57923 events. 31089/57923 cut-off events. For 108743/113562 co-relation queries the response was YES. Maximal size of possible extension queue 1760. Compared 571057 event pairs, 887 based on Foata normal form. 882/55463 useless extension candidates. Maximal degree in co-relation 160834. Up to 13896 conditions per place. [2023-12-09 15:33:07,868 INFO L140 encePairwiseOnDemand]: 120/161 looper letters, 996 selfloop transitions, 326 changer transitions 4155/5539 dead transitions. [2023-12-09 15:33:07,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 5539 transitions, 68621 flow [2023-12-09 15:33:07,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2023-12-09 15:33:07,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2023-12-09 15:33:07,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 11332 transitions. [2023-12-09 15:33:07,879 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.49918505792696355 [2023-12-09 15:33:07,879 INFO L72 ComplementDD]: Start complementDD. Operand 141 states and 11332 transitions. [2023-12-09 15:33:07,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 141 states and 11332 transitions. [2023-12-09 15:33:07,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:33:07,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 141 states and 11332 transitions. [2023-12-09 15:33:07,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 142 states, 141 states have (on average 80.36879432624113) internal successors, (11332), 141 states have internal predecessors, (11332), 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 15:33:07,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 142 states, 142 states have (on average 161.0) internal successors, (22862), 142 states have internal predecessors, (22862), 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 15:33:07,917 INFO L81 ComplementDD]: Finished complementDD. Result has 142 states, 142 states have (on average 161.0) internal successors, (22862), 142 states have internal predecessors, (22862), 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 15:33:07,920 INFO L308 CegarLoopForPetriNet]: 146 programPoint places, 489 predicate places. [2023-12-09 15:33:07,920 INFO L500 AbstractCegarLoop]: Abstraction has has 635 places, 5539 transitions, 68621 flow [2023-12-09 15:33:07,921 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 76.97058823529412) internal successors, (5234), 68 states have internal predecessors, (5234), 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 15:33:07,921 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:33:07,921 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:33:07,926 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 15:33:08,126 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:33:08,126 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-12-09 15:33:08,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:33:08,126 INFO L85 PathProgramCache]: Analyzing trace with hash 12548376, now seen corresponding path program 5 times [2023-12-09 15:33:08,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:33:08,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486116498] [2023-12-09 15:33:08,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:33:08,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:33:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:33:09,367 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:09,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:33:09,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486116498] [2023-12-09 15:33:09,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486116498] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:33:09,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071645929] [2023-12-09 15:33:09,368 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:33:09,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:33:09,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:33:09,369 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 15:33:09,371 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 15:33:09,499 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-09 15:33:09,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:33:09,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-09 15:33:09,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:33:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:11,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:33:12,210 INFO L349 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2023-12-09 15:33:12,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 45 [2023-12-09 15:33:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:33:13,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071645929] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:33:13,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:33:13,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 31, 26] total 79 [2023-12-09 15:33:13,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231804049] [2023-12-09 15:33:13,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:33:13,228 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2023-12-09 15:33:13,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:33:13,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2023-12-09 15:33:13,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=647, Invalid=5515, Unknown=0, NotChecked=0, Total=6162 [2023-12-09 15:33:13,233 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 161 [2023-12-09 15:33:13,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 5539 transitions, 68621 flow. Second operand has 79 states, 79 states have (on average 85.84810126582279) internal successors, (6782), 79 states have internal predecessors, (6782), 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 15:33:13,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:33:13,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 161 [2023-12-09 15:33:13,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:34:13,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 15:34:28,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 15:34:33,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-09 15:35:11,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2023-12-09 15:35:49,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 428 states. [2023-12-09 15:35:49,020 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-12-09 15:35:49,029 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 15:35:49,047 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:35:49,047 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 15:35:49,221 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:35:49,221 WARN L624 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantifier-free) to 496 known predicates. [2023-12-09 15:35:49,222 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-12-09 15:35:49,222 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-12-09 15:35:49,222 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-12-09 15:35:49,223 INFO L457 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1] [2023-12-09 15:35:49,225 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:35:49,225 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:35:49,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:35:49 BasicIcfg [2023-12-09 15:35:49,227 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:35:49,228 INFO L158 Benchmark]: Toolchain (without parser) took 239542.21ms. Allocated memory was 239.1MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 186.1MB in the beginning and 5.2GB in the end (delta: -5.1GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2023-12-09 15:35:49,228 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 188.7MB. Free memory is still 136.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:35:49,228 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.29ms. Allocated memory is still 239.1MB. Free memory was 186.1MB in the beginning and 174.1MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-09 15:35:49,228 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.23ms. Allocated memory is still 239.1MB. Free memory was 174.1MB in the beginning and 172.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:35:49,228 INFO L158 Benchmark]: Boogie Preprocessor took 20.58ms. Allocated memory is still 239.1MB. Free memory was 172.0MB in the beginning and 170.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:35:49,229 INFO L158 Benchmark]: RCFGBuilder took 507.02ms. Allocated memory is still 239.1MB. Free memory was 169.9MB in the beginning and 146.3MB in the end (delta: 23.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. [2023-12-09 15:35:49,229 INFO L158 Benchmark]: TraceAbstraction took 238803.12ms. Allocated memory was 239.1MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 145.8MB in the beginning and 5.2GB in the end (delta: -5.1GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2023-12-09 15:35:49,230 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 188.7MB. Free memory is still 136.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 177.29ms. Allocated memory is still 239.1MB. Free memory was 186.1MB in the beginning and 174.1MB in the end (delta: 12.1MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.23ms. Allocated memory is still 239.1MB. Free memory was 174.1MB in the beginning and 172.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.58ms. Allocated memory is still 239.1MB. Free memory was 172.0MB in the beginning and 170.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 507.02ms. Allocated memory is still 239.1MB. Free memory was 169.9MB in the beginning and 146.3MB in the end (delta: 23.6MB). Peak memory consumption was 24.1MB. Max. memory is 8.0GB. * TraceAbstraction took 238803.12ms. Allocated memory was 239.1MB in the beginning and 7.9GB in the end (delta: 7.7GB). Free memory was 145.8MB in the beginning and 5.2GB in the end (delta: -5.1GB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 496 known predicates. - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 496 known predicates. - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 496 known predicates. - TimeoutResultAtElement [Line: 108]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 496 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 182 locations, 4 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: 238.7s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 216.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 15 mSolverCounterUnknown, 11710 SdHoareTripleChecker+Valid, 24.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11710 mSDsluCounter, 10513 SdHoareTripleChecker+Invalid, 22.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 855 IncrementalHoareTripleChecker+Unchecked, 10110 mSDsCounter, 1118 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27874 IncrementalHoareTripleChecker+Invalid, 29862 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1118 mSolverCounterUnsat, 403 mSDtfsCounter, 27874 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2435 GetRequests, 1244 SyntacticMatches, 22 SemanticMatches, 1168 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 151905 ImplicationChecksByTransitivity, 60.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68621occurred in iteration=8, InterpolantAutomatonStates: 497, 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: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 20.2s InterpolantComputationTime, 1907 NumberOfCodeBlocks, 1899 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 2602 ConstructedInterpolants, 158 QuantifiedInterpolants, 33945 SizeOfPredicates, 114 NumberOfNonLiveVariables, 1711 ConjunctsInSsa, 174 ConjunctsInUnsatCore, 19 InterpolantComputations, 4 PerfectInterpolantSequences, 54/183 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