/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 07:21:34,808 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 07:21:34,879 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-VariableLbe.epf [2023-08-24 07:21:34,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 07:21:34,884 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 07:21:34,908 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 07:21:34,909 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 07:21:34,909 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 07:21:34,910 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 07:21:34,911 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 07:21:34,911 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 07:21:34,912 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 07:21:34,912 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 07:21:34,912 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 07:21:34,913 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 07:21:34,913 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 07:21:34,913 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 07:21:34,913 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 07:21:34,914 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 07:21:34,914 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 07:21:34,914 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 07:21:34,914 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 07:21:34,915 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 07:21:34,915 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 07:21:34,915 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 07:21:34,916 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 07:21:34,916 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 07:21:34,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 07:21:34,917 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 07:21:34,917 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 07:21:34,918 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 07:21:34,918 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 07:21:34,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 07:21:34,918 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 07:21:34,919 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 07:21:34,919 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 07:21:35,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 07:21:35,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 07:21:35,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 07:21:35,265 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 07:21:35,265 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 07:21:35,266 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2023-08-24 07:21:36,467 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 07:21:36,651 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 07:21:36,651 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-trans.wvr.c [2023-08-24 07:21:36,658 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc014f1a9/c1ddf8d46e6b4cc984d89148e7a67a31/FLAG2e3e35f24 [2023-08-24 07:21:36,669 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc014f1a9/c1ddf8d46e6b4cc984d89148e7a67a31 [2023-08-24 07:21:36,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 07:21:36,672 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 07:21:36,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 07:21:36,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 07:21:36,675 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 07:21:36,675 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 07:21:36" (1/1) ... [2023-08-24 07:21:36,676 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf59536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:21:36, skipping insertion in model container [2023-08-24 07:21:36,676 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 07:21:36" (1/1) ... [2023-08-24 07:21:36,697 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 07:21:36,824 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/chl-array-int-trans.wvr.c[2728,2741] [2023-08-24 07:21:36,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 07:21:36,837 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 07:21:36,857 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/chl-array-int-trans.wvr.c[2728,2741] [2023-08-24 07:21:36,860 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 07:21:36,873 INFO L206 MainTranslator]: Completed translation [2023-08-24 07:21:36,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:21:36 WrapperNode [2023-08-24 07:21:36,873 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 07:21:36,874 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 07:21:36,874 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 07:21:36,874 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 07:21:36,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:21:36" (1/1) ... [2023-08-24 07:21:36,887 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:21:36" (1/1) ... [2023-08-24 07:21:36,910 INFO L138 Inliner]: procedures = 26, calls = 49, calls flagged for inlining = 13, calls inlined = 21, statements flattened = 286 [2023-08-24 07:21:36,910 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 07:21:36,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 07:21:36,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 07:21:36,911 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 07:21:36,918 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:21:36" (1/1) ... [2023-08-24 07:21:36,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:21:36" (1/1) ... [2023-08-24 07:21:36,923 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:21:36" (1/1) ... [2023-08-24 07:21:36,923 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:21:36" (1/1) ... [2023-08-24 07:21:36,931 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:21:36" (1/1) ... [2023-08-24 07:21:36,935 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:21:36" (1/1) ... [2023-08-24 07:21:36,936 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:21:36" (1/1) ... [2023-08-24 07:21:36,938 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:21:36" (1/1) ... [2023-08-24 07:21:36,940 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 07:21:36,941 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 07:21:36,941 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 07:21:36,941 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 07:21:36,942 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:21:36" (1/1) ... [2023-08-24 07:21:36,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 07:21:36,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:21:36,985 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) [2023-08-24 07:21:37,008 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 [2023-08-24 07:21:37,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 07:21:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 07:21:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 07:21:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 07:21:37,025 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 07:21:37,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 07:21:37,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 07:21:37,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 07:21:37,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 07:21:37,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 07:21:37,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 07:21:37,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 07:21:37,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 07:21:37,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 07:21:37,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 07:21:37,028 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 07:21:37,152 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 07:21:37,155 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 07:21:37,522 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 07:21:37,533 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 07:21:37,533 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-24 07:21:37,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 07:21:37 BoogieIcfgContainer [2023-08-24 07:21:37,535 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 07:21:37,537 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 07:21:37,537 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 07:21:37,540 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 07:21:37,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 07:21:36" (1/3) ... [2023-08-24 07:21:37,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20641659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 07:21:37, skipping insertion in model container [2023-08-24 07:21:37,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:21:36" (2/3) ... [2023-08-24 07:21:37,541 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20641659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 07:21:37, skipping insertion in model container [2023-08-24 07:21:37,541 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 07:21:37" (3/3) ... [2023-08-24 07:21:37,542 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-trans.wvr.c [2023-08-24 07:21:37,556 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 07:21:37,556 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 07:21:37,556 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 07:21:37,708 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 07:21:37,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 321 transitions, 666 flow [2023-08-24 07:21:37,854 INFO L124 PetriNetUnfolderBase]: 28/318 cut-off events. [2023-08-24 07:21:37,854 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 07:21:37,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 318 events. 28/318 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 511 event pairs, 0 based on Foata normal form. 0/289 useless extension candidates. Maximal degree in co-relation 248. Up to 3 conditions per place. [2023-08-24 07:21:37,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 321 transitions, 666 flow [2023-08-24 07:21:37,867 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 290 places, 308 transitions, 634 flow [2023-08-24 07:21:37,870 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 07:21:37,877 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 290 places, 308 transitions, 634 flow [2023-08-24 07:21:37,879 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 290 places, 308 transitions, 634 flow [2023-08-24 07:21:37,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 308 transitions, 634 flow [2023-08-24 07:21:37,933 INFO L124 PetriNetUnfolderBase]: 28/308 cut-off events. [2023-08-24 07:21:37,933 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 07:21:37,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 308 events. 28/308 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 511 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 248. Up to 3 conditions per place. [2023-08-24 07:21:37,942 INFO L119 LiptonReduction]: Number of co-enabled transitions 14784 [2023-08-24 07:21:46,624 INFO L134 LiptonReduction]: Checked pairs total: 16347 [2023-08-24 07:21:46,625 INFO L136 LiptonReduction]: Total number of compositions: 338 [2023-08-24 07:21:46,637 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 07:21:46,643 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@44945d4b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 07:21:46,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 07:21:46,649 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 07:21:46,649 INFO L124 PetriNetUnfolderBase]: 8/35 cut-off events. [2023-08-24 07:21:46,650 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 07:21:46,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:21:46,650 INFO L208 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] [2023-08-24 07:21:46,651 INFO L420 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)] === [2023-08-24 07:21:46,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:21:46,655 INFO L85 PathProgramCache]: Analyzing trace with hash 99088314, now seen corresponding path program 1 times [2023-08-24 07:21:46,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:21:46,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390247577] [2023-08-24 07:21:46,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:21:46,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:21:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:21:47,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:21:47,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:21:47,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390247577] [2023-08-24 07:21:47,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390247577] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:21:47,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:21:47,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 07:21:47,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779519114] [2023-08-24 07:21:47,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:21:47,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:21:47,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:21:47,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:21:47,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-24 07:21:47,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 659 [2023-08-24 07:21:47,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 240.14285714285714) internal successors, (1681), 7 states have internal predecessors, (1681), 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) [2023-08-24 07:21:47,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:21:47,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 659 [2023-08-24 07:21:47,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:21:48,007 INFO L124 PetriNetUnfolderBase]: 1630/2339 cut-off events. [2023-08-24 07:21:48,007 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2023-08-24 07:21:48,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4858 conditions, 2339 events. 1630/2339 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9695 event pairs, 519 based on Foata normal form. 1/1744 useless extension candidates. Maximal degree in co-relation 2178. Up to 995 conditions per place. [2023-08-24 07:21:48,020 INFO L140 encePairwiseOnDemand]: 652/659 looper letters, 90 selfloop transitions, 6 changer transitions 6/103 dead transitions. [2023-08-24 07:21:48,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 103 transitions, 467 flow [2023-08-24 07:21:48,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:21:48,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:21:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1762 transitions. [2023-08-24 07:21:48,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819640147409495 [2023-08-24 07:21:48,038 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1762 transitions. [2023-08-24 07:21:48,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1762 transitions. [2023-08-24 07:21:48,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:21:48,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1762 transitions. [2023-08-24 07:21:48,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 251.71428571428572) internal successors, (1762), 7 states have internal predecessors, (1762), 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) [2023-08-24 07:21:48,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 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) [2023-08-24 07:21:48,062 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 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) [2023-08-24 07:21:48,063 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 90 flow. Second operand 7 states and 1762 transitions. [2023-08-24 07:21:48,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 103 transitions, 467 flow [2023-08-24 07:21:48,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 103 transitions, 429 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 07:21:48,071 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 121 flow [2023-08-24 07:21:48,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=121, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2023-08-24 07:21:48,075 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2023-08-24 07:21:48,075 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 121 flow [2023-08-24 07:21:48,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 240.14285714285714) internal successors, (1681), 7 states have internal predecessors, (1681), 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) [2023-08-24 07:21:48,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:21:48,077 INFO L208 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] [2023-08-24 07:21:48,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 07:21:48,077 INFO L420 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)] === [2023-08-24 07:21:48,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:21:48,078 INFO L85 PathProgramCache]: Analyzing trace with hash -2081012322, now seen corresponding path program 1 times [2023-08-24 07:21:48,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:21:48,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043816506] [2023-08-24 07:21:48,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:21:48,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:21:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:21:48,417 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:21:48,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:21:48,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043816506] [2023-08-24 07:21:48,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043816506] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:21:48,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125947458] [2023-08-24 07:21:48,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:21:48,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:21:48,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:21:48,425 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) [2023-08-24 07:21:48,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 07:21:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:21:48,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-24 07:21:48,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:21:48,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:21:48,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 07:21:48,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125947458] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:21:48,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 07:21:48,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 12 [2023-08-24 07:21:48,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403961567] [2023-08-24 07:21:48,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:21:48,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:21:48,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:21:48,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:21:48,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-08-24 07:21:48,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 659 [2023-08-24 07:21:48,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 245.6) internal successors, (1228), 5 states have internal predecessors, (1228), 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) [2023-08-24 07:21:48,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:21:48,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 659 [2023-08-24 07:21:48,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:21:49,234 INFO L124 PetriNetUnfolderBase]: 3446/5123 cut-off events. [2023-08-24 07:21:49,234 INFO L125 PetriNetUnfolderBase]: For 414/414 co-relation queries the response was YES. [2023-08-24 07:21:49,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10795 conditions, 5123 events. 3446/5123 cut-off events. For 414/414 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 25845 event pairs, 1226 based on Foata normal form. 2/3866 useless extension candidates. Maximal degree in co-relation 5867. Up to 2168 conditions per place. [2023-08-24 07:21:49,257 INFO L140 encePairwiseOnDemand]: 650/659 looper letters, 100 selfloop transitions, 10 changer transitions 4/115 dead transitions. [2023-08-24 07:21:49,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 115 transitions, 547 flow [2023-08-24 07:21:49,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:21:49,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:21:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1790 transitions. [2023-08-24 07:21:49,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880338174723607 [2023-08-24 07:21:49,263 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1790 transitions. [2023-08-24 07:21:49,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1790 transitions. [2023-08-24 07:21:49,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:21:49,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1790 transitions. [2023-08-24 07:21:49,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 255.71428571428572) internal successors, (1790), 7 states have internal predecessors, (1790), 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) [2023-08-24 07:21:49,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 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) [2023-08-24 07:21:49,280 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 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) [2023-08-24 07:21:49,281 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 121 flow. Second operand 7 states and 1790 transitions. [2023-08-24 07:21:49,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 115 transitions, 547 flow [2023-08-24 07:21:49,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 115 transitions, 540 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 07:21:49,290 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 190 flow [2023-08-24 07:21:49,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=190, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-08-24 07:21:49,291 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 13 predicate places. [2023-08-24 07:21:49,291 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 190 flow [2023-08-24 07:21:49,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 245.6) internal successors, (1228), 5 states have internal predecessors, (1228), 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) [2023-08-24 07:21:49,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:21:49,292 INFO L208 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] [2023-08-24 07:21:49,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 07:21:49,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:21:49,509 INFO L420 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)] === [2023-08-24 07:21:49,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:21:49,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1645561427, now seen corresponding path program 1 times [2023-08-24 07:21:49,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:21:49,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970180595] [2023-08-24 07:21:49,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:21:49,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:21:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:21:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:21:49,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:21:49,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970180595] [2023-08-24 07:21:49,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970180595] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:21:49,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443761780] [2023-08-24 07:21:49,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:21:49,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:21:49,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:21:49,724 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) [2023-08-24 07:21:49,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 07:21:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:21:49,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 07:21:49,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:21:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:21:49,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:21:50,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:21:50,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443761780] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 07:21:50,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 07:21:50,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2023-08-24 07:21:50,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24135592] [2023-08-24 07:21:50,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:21:50,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:21:50,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:21:50,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:21:50,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-08-24 07:21:50,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 659 [2023-08-24 07:21:50,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 240.42857142857142) internal successors, (1683), 7 states have internal predecessors, (1683), 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) [2023-08-24 07:21:50,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:21:50,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 659 [2023-08-24 07:21:50,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:21:50,919 INFO L124 PetriNetUnfolderBase]: 3836/5572 cut-off events. [2023-08-24 07:21:50,919 INFO L125 PetriNetUnfolderBase]: For 764/764 co-relation queries the response was YES. [2023-08-24 07:21:50,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12668 conditions, 5572 events. 3836/5572 cut-off events. For 764/764 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 27892 event pairs, 1090 based on Foata normal form. 0/4190 useless extension candidates. Maximal degree in co-relation 6437. Up to 1497 conditions per place. [2023-08-24 07:21:50,942 INFO L140 encePairwiseOnDemand]: 650/659 looper letters, 150 selfloop transitions, 13 changer transitions 8/172 dead transitions. [2023-08-24 07:21:50,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 172 transitions, 879 flow [2023-08-24 07:21:50,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 07:21:50,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 07:21:50,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2295 transitions. [2023-08-24 07:21:50,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38694992412746587 [2023-08-24 07:21:50,948 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2295 transitions. [2023-08-24 07:21:50,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2295 transitions. [2023-08-24 07:21:50,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:21:50,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2295 transitions. [2023-08-24 07:21:50,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 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) [2023-08-24 07:21:50,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 659.0) internal successors, (6590), 10 states have internal predecessors, (6590), 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) [2023-08-24 07:21:50,965 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 659.0) internal successors, (6590), 10 states have internal predecessors, (6590), 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) [2023-08-24 07:21:50,965 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 190 flow. Second operand 9 states and 2295 transitions. [2023-08-24 07:21:50,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 172 transitions, 879 flow [2023-08-24 07:21:50,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 172 transitions, 866 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-24 07:21:50,970 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 246 flow [2023-08-24 07:21:50,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=246, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2023-08-24 07:21:50,971 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 23 predicate places. [2023-08-24 07:21:50,971 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 246 flow [2023-08-24 07:21:50,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 240.42857142857142) internal successors, (1683), 7 states have internal predecessors, (1683), 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) [2023-08-24 07:21:50,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:21:50,972 INFO L208 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] [2023-08-24 07:21:50,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 07:21:51,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-24 07:21:51,177 INFO L420 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)] === [2023-08-24 07:21:51,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:21:51,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1003385407, now seen corresponding path program 1 times [2023-08-24 07:21:51,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:21:51,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271086346] [2023-08-24 07:21:51,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:21:51,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:21:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:21:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:21:51,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:21:51,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271086346] [2023-08-24 07:21:51,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271086346] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:21:51,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:21:51,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 07:21:51,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723265976] [2023-08-24 07:21:51,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:21:51,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:21:51,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:21:51,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:21:51,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:21:51,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 659 [2023-08-24 07:21:51,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 246 flow. Second operand has 5 states, 5 states have (on average 248.2) internal successors, (1241), 5 states have internal predecessors, (1241), 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) [2023-08-24 07:21:51,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:21:51,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 659 [2023-08-24 07:21:51,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:21:51,883 INFO L124 PetriNetUnfolderBase]: 3067/4472 cut-off events. [2023-08-24 07:21:51,883 INFO L125 PetriNetUnfolderBase]: For 1587/1587 co-relation queries the response was YES. [2023-08-24 07:21:51,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10715 conditions, 4472 events. 3067/4472 cut-off events. For 1587/1587 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 20545 event pairs, 1726 based on Foata normal form. 0/3828 useless extension candidates. Maximal degree in co-relation 7077. Up to 3137 conditions per place. [2023-08-24 07:21:51,902 INFO L140 encePairwiseOnDemand]: 654/659 looper letters, 42 selfloop transitions, 4 changer transitions 52/98 dead transitions. [2023-08-24 07:21:51,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 98 transitions, 571 flow [2023-08-24 07:21:51,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 07:21:51,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 07:21:51,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1294 transitions. [2023-08-24 07:21:51,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39271623672230654 [2023-08-24 07:21:51,907 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1294 transitions. [2023-08-24 07:21:51,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1294 transitions. [2023-08-24 07:21:51,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:21:51,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1294 transitions. [2023-08-24 07:21:51,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 258.8) internal successors, (1294), 5 states have internal predecessors, (1294), 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) [2023-08-24 07:21:51,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 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) [2023-08-24 07:21:51,916 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 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) [2023-08-24 07:21:51,916 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 246 flow. Second operand 5 states and 1294 transitions. [2023-08-24 07:21:51,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 98 transitions, 571 flow [2023-08-24 07:21:51,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 98 transitions, 564 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-24 07:21:51,924 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 197 flow [2023-08-24 07:21:51,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=197, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2023-08-24 07:21:51,925 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 26 predicate places. [2023-08-24 07:21:51,925 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 197 flow [2023-08-24 07:21:51,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 248.2) internal successors, (1241), 5 states have internal predecessors, (1241), 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) [2023-08-24 07:21:51,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:21:51,926 INFO L208 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] [2023-08-24 07:21:51,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 07:21:51,927 INFO L420 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)] === [2023-08-24 07:21:51,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:21:51,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1657132405, now seen corresponding path program 1 times [2023-08-24 07:21:51,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:21:51,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718213403] [2023-08-24 07:21:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:21:51,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:21:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:21:52,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:21:52,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:21:52,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718213403] [2023-08-24 07:21:52,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718213403] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:21:52,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:21:52,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 07:21:52,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637719964] [2023-08-24 07:21:52,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:21:52,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:21:52,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:21:52,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:21:52,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:21:52,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 659 [2023-08-24 07:21:52,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 248.2) internal successors, (1241), 5 states have internal predecessors, (1241), 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) [2023-08-24 07:21:52,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:21:52,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 659 [2023-08-24 07:21:52,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:21:52,355 INFO L124 PetriNetUnfolderBase]: 1336/1948 cut-off events. [2023-08-24 07:21:52,355 INFO L125 PetriNetUnfolderBase]: For 874/874 co-relation queries the response was YES. [2023-08-24 07:21:52,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4707 conditions, 1948 events. 1336/1948 cut-off events. For 874/874 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7575 event pairs, 725 based on Foata normal form. 42/1718 useless extension candidates. Maximal degree in co-relation 4683. Up to 1406 conditions per place. [2023-08-24 07:21:52,366 INFO L140 encePairwiseOnDemand]: 654/659 looper letters, 36 selfloop transitions, 2 changer transitions 42/81 dead transitions. [2023-08-24 07:21:52,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 81 transitions, 444 flow [2023-08-24 07:21:52,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 07:21:52,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 07:21:52,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1293 transitions. [2023-08-24 07:21:52,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39241274658573594 [2023-08-24 07:21:52,370 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1293 transitions. [2023-08-24 07:21:52,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1293 transitions. [2023-08-24 07:21:52,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:21:52,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1293 transitions. [2023-08-24 07:21:52,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 258.6) internal successors, (1293), 5 states have internal predecessors, (1293), 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) [2023-08-24 07:21:52,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 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) [2023-08-24 07:21:52,378 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 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) [2023-08-24 07:21:52,378 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 197 flow. Second operand 5 states and 1293 transitions. [2023-08-24 07:21:52,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 81 transitions, 444 flow [2023-08-24 07:21:52,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 81 transitions, 396 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-08-24 07:21:52,381 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 128 flow [2023-08-24 07:21:52,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-08-24 07:21:52,382 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2023-08-24 07:21:52,382 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 128 flow [2023-08-24 07:21:52,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 248.2) internal successors, (1241), 5 states have internal predecessors, (1241), 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) [2023-08-24 07:21:52,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:21:52,383 INFO L208 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] [2023-08-24 07:21:52,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 07:21:52,383 INFO L420 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)] === [2023-08-24 07:21:52,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:21:52,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1868473932, now seen corresponding path program 1 times [2023-08-24 07:21:52,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:21:52,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735503074] [2023-08-24 07:21:52,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:21:52,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:21:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:21:52,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 07:21:52,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:21:52,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735503074] [2023-08-24 07:21:52,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735503074] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:21:52,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516995401] [2023-08-24 07:21:52,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:21:52,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:21:52,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:21:52,767 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) [2023-08-24 07:21:52,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 07:21:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:21:52,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-24 07:21:52,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:21:53,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:21:53,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:21:53,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:21:53,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516995401] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:21:53,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:21:53,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 16 [2023-08-24 07:21:53,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201369681] [2023-08-24 07:21:53,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:21:53,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-24 07:21:53,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:21:53,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-24 07:21:53,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-08-24 07:21:53,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 659 [2023-08-24 07:21:53,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 128 flow. Second operand has 18 states, 18 states have (on average 232.33333333333334) internal successors, (4182), 18 states have internal predecessors, (4182), 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) [2023-08-24 07:21:53,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:21:53,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 659 [2023-08-24 07:21:53,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:21:54,651 INFO L124 PetriNetUnfolderBase]: 4722/6915 cut-off events. [2023-08-24 07:21:54,651 INFO L125 PetriNetUnfolderBase]: For 2147/2147 co-relation queries the response was YES. [2023-08-24 07:21:54,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15460 conditions, 6915 events. 4722/6915 cut-off events. For 2147/2147 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 35515 event pairs, 1388 based on Foata normal form. 6/5844 useless extension candidates. Maximal degree in co-relation 15441. Up to 1291 conditions per place. [2023-08-24 07:21:54,680 INFO L140 encePairwiseOnDemand]: 647/659 looper letters, 132 selfloop transitions, 15 changer transitions 155/303 dead transitions. [2023-08-24 07:21:54,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 303 transitions, 1421 flow [2023-08-24 07:21:54,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-24 07:21:54,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-24 07:21:54,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5799 transitions. [2023-08-24 07:21:54,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36665402124430957 [2023-08-24 07:21:54,694 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5799 transitions. [2023-08-24 07:21:54,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5799 transitions. [2023-08-24 07:21:54,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:21:54,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5799 transitions. [2023-08-24 07:21:54,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 241.625) internal successors, (5799), 24 states have internal predecessors, (5799), 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) [2023-08-24 07:21:54,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 659.0) internal successors, (16475), 25 states have internal predecessors, (16475), 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) [2023-08-24 07:21:54,741 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 659.0) internal successors, (16475), 25 states have internal predecessors, (16475), 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) [2023-08-24 07:21:54,741 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 128 flow. Second operand 24 states and 5799 transitions. [2023-08-24 07:21:54,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 303 transitions, 1421 flow [2023-08-24 07:21:54,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 303 transitions, 1383 flow, removed 5 selfloop flow, removed 8 redundant places. [2023-08-24 07:21:54,747 INFO L231 Difference]: Finished difference. Result has 79 places, 51 transitions, 247 flow [2023-08-24 07:21:54,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=247, PETRI_PLACES=79, PETRI_TRANSITIONS=51} [2023-08-24 07:21:54,747 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 41 predicate places. [2023-08-24 07:21:54,747 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 51 transitions, 247 flow [2023-08-24 07:21:54,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 232.33333333333334) internal successors, (4182), 18 states have internal predecessors, (4182), 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) [2023-08-24 07:21:54,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:21:54,749 INFO L208 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] [2023-08-24 07:21:54,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-24 07:21:54,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:21:54,954 INFO L420 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)] === [2023-08-24 07:21:54,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:21:54,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2068520229, now seen corresponding path program 1 times [2023-08-24 07:21:54,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:21:54,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789453295] [2023-08-24 07:21:54,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:21:54,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:21:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:21:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:21:55,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:21:55,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789453295] [2023-08-24 07:21:55,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789453295] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:21:55,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872952748] [2023-08-24 07:21:55,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:21:55,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:21:55,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:21:55,155 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) [2023-08-24 07:21:55,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 07:21:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:21:55,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 07:21:55,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:21:55,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:21:55,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:21:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:21:55,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872952748] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 07:21:55,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 07:21:55,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 14 [2023-08-24 07:21:55,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064621445] [2023-08-24 07:21:55,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:21:55,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 07:21:55,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:21:55,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 07:21:55,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-08-24 07:21:55,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 659 [2023-08-24 07:21:55,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 51 transitions, 247 flow. Second operand has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 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) [2023-08-24 07:21:55,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:21:55,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 659 [2023-08-24 07:21:55,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:21:56,169 INFO L124 PetriNetUnfolderBase]: 4352/6331 cut-off events. [2023-08-24 07:21:56,169 INFO L125 PetriNetUnfolderBase]: For 13601/13601 co-relation queries the response was YES. [2023-08-24 07:21:56,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19065 conditions, 6331 events. 4352/6331 cut-off events. For 13601/13601 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 31455 event pairs, 1173 based on Foata normal form. 0/5875 useless extension candidates. Maximal degree in co-relation 15963. Up to 4090 conditions per place. [2023-08-24 07:21:56,201 INFO L140 encePairwiseOnDemand]: 651/659 looper letters, 64 selfloop transitions, 11 changer transitions 0/75 dead transitions. [2023-08-24 07:21:56,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 75 transitions, 508 flow [2023-08-24 07:21:56,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:21:56,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:21:56,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1718 transitions. [2023-08-24 07:21:56,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724257533058747 [2023-08-24 07:21:56,206 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1718 transitions. [2023-08-24 07:21:56,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1718 transitions. [2023-08-24 07:21:56,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:21:56,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1718 transitions. [2023-08-24 07:21:56,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 245.42857142857142) internal successors, (1718), 7 states have internal predecessors, (1718), 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) [2023-08-24 07:21:56,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 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) [2023-08-24 07:21:56,216 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 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) [2023-08-24 07:21:56,216 INFO L175 Difference]: Start difference. First operand has 79 places, 51 transitions, 247 flow. Second operand 7 states and 1718 transitions. [2023-08-24 07:21:56,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 75 transitions, 508 flow [2023-08-24 07:21:56,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 75 transitions, 454 flow, removed 24 selfloop flow, removed 9 redundant places. [2023-08-24 07:21:56,266 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 247 flow [2023-08-24 07:21:56,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2023-08-24 07:21:56,266 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2023-08-24 07:21:56,267 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 247 flow [2023-08-24 07:21:56,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 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) [2023-08-24 07:21:56,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:21:56,267 INFO L208 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] [2023-08-24 07:21:56,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 07:21:56,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:21:56,473 INFO L420 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)] === [2023-08-24 07:21:56,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:21:56,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1174619569, now seen corresponding path program 1 times [2023-08-24 07:21:56,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:21:56,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445260685] [2023-08-24 07:21:56,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:21:56,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:21:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:21:56,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 07:21:56,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:21:56,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445260685] [2023-08-24 07:21:56,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445260685] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:21:56,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99220307] [2023-08-24 07:21:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:21:56,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:21:56,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:21:56,729 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) [2023-08-24 07:21:56,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 07:21:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:21:56,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-24 07:21:56,856 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:21:56,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 07:21:56,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:21:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 07:21:57,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99220307] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:21:57,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:21:57,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-24 07:21:57,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312141552] [2023-08-24 07:21:57,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:21:57,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 07:21:57,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:21:57,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 07:21:57,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-24 07:21:57,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 659 [2023-08-24 07:21:57,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 247 flow. Second operand has 14 states, 14 states have (on average 244.35714285714286) internal successors, (3421), 14 states have internal predecessors, (3421), 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) [2023-08-24 07:21:57,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:21:57,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 659 [2023-08-24 07:21:57,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:21:58,454 INFO L124 PetriNetUnfolderBase]: 7646/11434 cut-off events. [2023-08-24 07:21:58,454 INFO L125 PetriNetUnfolderBase]: For 10952/10952 co-relation queries the response was YES. [2023-08-24 07:21:58,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32098 conditions, 11434 events. 7646/11434 cut-off events. For 10952/10952 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 65971 event pairs, 2766 based on Foata normal form. 4/11391 useless extension candidates. Maximal degree in co-relation 21510. Up to 4929 conditions per place. [2023-08-24 07:21:58,504 INFO L140 encePairwiseOnDemand]: 650/659 looper letters, 116 selfloop transitions, 17 changer transitions 4/138 dead transitions. [2023-08-24 07:21:58,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 138 transitions, 887 flow [2023-08-24 07:21:58,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 07:21:58,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 07:21:58,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2515 transitions. [2023-08-24 07:21:58,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38163884673748105 [2023-08-24 07:21:58,511 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2515 transitions. [2023-08-24 07:21:58,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2515 transitions. [2023-08-24 07:21:58,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:21:58,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2515 transitions. [2023-08-24 07:21:58,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 251.5) internal successors, (2515), 10 states have internal predecessors, (2515), 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) [2023-08-24 07:21:58,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 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) [2023-08-24 07:21:58,526 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 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) [2023-08-24 07:21:58,526 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 247 flow. Second operand 10 states and 2515 transitions. [2023-08-24 07:21:58,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 138 transitions, 887 flow [2023-08-24 07:21:58,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 138 transitions, 867 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 07:21:58,540 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 386 flow [2023-08-24 07:21:58,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=386, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2023-08-24 07:21:58,541 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 42 predicate places. [2023-08-24 07:21:58,541 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 386 flow [2023-08-24 07:21:58,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 244.35714285714286) internal successors, (3421), 14 states have internal predecessors, (3421), 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) [2023-08-24 07:21:58,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:21:58,542 INFO L208 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] [2023-08-24 07:21:58,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 07:21:58,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:21:58,747 INFO L420 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)] === [2023-08-24 07:21:58,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:21:58,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1930689046, now seen corresponding path program 1 times [2023-08-24 07:21:58,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:21:58,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365379361] [2023-08-24 07:21:58,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:21:58,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:21:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:21:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:21:59,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:21:59,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365379361] [2023-08-24 07:21:59,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365379361] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:21:59,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439742916] [2023-08-24 07:21:59,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:21:59,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:21:59,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:21:59,915 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:21:59,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 07:22:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:22:00,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 62 conjunts are in the unsatisfiable core [2023-08-24 07:22:00,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:22:00,253 INFO L351 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 11 treesize of output 7 [2023-08-24 07:22:00,316 INFO L351 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 6 treesize of output 5 [2023-08-24 07:22:00,430 INFO L351 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 6 treesize of output 5 [2023-08-24 07:22:00,571 INFO L351 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 6 treesize of output 5 [2023-08-24 07:22:01,032 INFO L322 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-08-24 07:22:01,032 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 52 treesize of output 40 [2023-08-24 07:22:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:22:01,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:22:01,994 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse13 (* |c_thread1Thread1of1ForFork2_~i~0#1| 4)) (.cse14 (* |c_thread2Thread1of1ForFork0_~i~1#1| 4))) (let ((.cse2 (+ .cse14 c_~a2~0.offset)) (.cse4 (+ .cse14 c_~a3~0.offset)) (.cse8 (+ c_~a1~0.offset .cse13)) (.cse9 (+ c_~a2~0.offset .cse13))) (let ((.cse0 (forall ((v_ArrVal_425 (Array Int Int)) (~a1~0.base Int) (~a2~0.base Int)) (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_425))) (let ((.cse11 (select .cse12 ~a2~0.base))) (or (< (select .cse11 .cse2) (+ (select (select .cse12 c_~a3~0.base) .cse4) 1)) (< (select (select .cse12 ~a1~0.base) .cse8) (+ (select .cse11 .cse9) 1)))))))) (and (or (< 0 c_~n1~0) .cse0) (or (< 0 c_~n3~0) .cse0) (forall ((v_ArrVal_425 (Array Int Int)) (~a2~0.base Int)) (let ((.cse10 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_425))) (let ((.cse1 (select .cse10 ~a2~0.base)) (.cse3 (select .cse10 c_~a3~0.base))) (or (< (select .cse1 .cse2) (+ (select .cse3 .cse4) 1)) (forall ((~a1~0.base Int)) (let ((.cse7 (select .cse10 ~a1~0.base))) (let ((.cse6 (select .cse3 c_~a3~0.offset)) (.cse5 (select .cse7 c_~a1~0.offset))) (or (< (+ .cse5 2147483648) .cse6) (< .cse6 .cse5) (= .cse6 .cse5) (< (select .cse7 .cse8) (+ (select .cse1 .cse9) 1)))))))))))))) is different from false [2023-08-24 07:22:02,043 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) (let ((.cse4 (+ c_~a1~0.offset .cse10)) (.cse6 (+ c_~a2~0.offset .cse10))) (let ((.cse0 (forall ((v_ArrVal_425 (Array Int Int)) (~a1~0.base Int) (~a2~0.base Int)) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_425))) (let ((.cse8 (select .cse9 ~a2~0.base))) (or (< (select .cse8 c_~a2~0.offset) (+ (select (select .cse9 c_~a3~0.base) c_~a3~0.offset) 1)) (< (select (select .cse9 ~a1~0.base) .cse4) (+ (select .cse8 .cse6) 1)))))))) (and (or (< 0 c_~n1~0) .cse0) (or .cse0 (< 0 c_~n3~0)) (forall ((v_ArrVal_425 (Array Int Int)) (~a2~0.base Int)) (let ((.cse7 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_425))) (let ((.cse5 (select .cse7 ~a2~0.base)) (.cse2 (select (select .cse7 c_~a3~0.base) c_~a3~0.offset))) (or (forall ((~a1~0.base Int)) (let ((.cse3 (select .cse7 ~a1~0.base))) (let ((.cse1 (select .cse3 c_~a1~0.offset))) (or (< (+ .cse1 2147483648) .cse2) (< .cse2 .cse1) (= .cse2 .cse1) (< (select .cse3 .cse4) (+ (select .cse5 .cse6) 1)))))) (< (select .cse5 c_~a2~0.offset) (+ .cse2 1)))))))))) is different from false [2023-08-24 07:22:02,226 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse10 (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) (let ((.cse4 (+ c_~a1~0.offset .cse10)) (.cse6 (+ c_~a2~0.offset .cse10))) (let ((.cse0 (forall ((v_ArrVal_425 (Array Int Int)) (v_ArrVal_424 (Array Int Int)) (~a1~0.base Int) (~a2~0.base Int)) (let ((.cse8 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_424) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_425))) (let ((.cse9 (select .cse8 ~a2~0.base))) (or (< (select (select .cse8 ~a1~0.base) .cse4) (+ (select .cse9 .cse6) 1)) (< (select .cse9 c_~a2~0.offset) (+ (select (select .cse8 c_~a3~0.base) c_~a3~0.offset) 1)))))))) (and (or (< 0 c_~n3~0) .cse0) (forall ((v_ArrVal_425 (Array Int Int)) (v_ArrVal_424 (Array Int Int)) (~a2~0.base Int)) (let ((.cse7 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_424) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_425))) (let ((.cse5 (select .cse7 ~a2~0.base)) (.cse1 (select (select .cse7 c_~a3~0.base) c_~a3~0.offset))) (or (forall ((~a1~0.base Int)) (let ((.cse3 (select .cse7 ~a1~0.base))) (let ((.cse2 (select .cse3 c_~a1~0.offset))) (or (< .cse1 .cse2) (< (+ .cse2 2147483648) .cse1) (= .cse2 .cse1) (< (select .cse3 .cse4) (+ (select .cse5 .cse6) 1)))))) (< (select .cse5 c_~a2~0.offset) (+ .cse1 1)))))) (or (< 0 c_~n1~0) .cse0))))) is different from false [2023-08-24 07:22:02,472 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:22:02,472 INFO L351 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 111 treesize of output 75 [2023-08-24 07:22:02,531 INFO L322 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2023-08-24 07:22:02,532 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 14955 treesize of output 14208 [2023-08-24 07:22:02,825 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:22:02,825 INFO L351 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 2347 treesize of output 2307 [2023-08-24 07:22:02,924 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:22:02,925 INFO L351 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 2283 treesize of output 2179 [2023-08-24 07:22:03,017 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:22:03,018 INFO L351 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 2155 treesize of output 1923 [2023-08-24 07:22:19,966 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:22:19,966 INFO L351 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 111 treesize of output 75 [2023-08-24 07:22:20,011 INFO L322 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2023-08-24 07:22:20,011 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7467 treesize of output 7104 [2023-08-24 07:22:20,111 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:22:20,112 INFO L351 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 2347 treesize of output 2243 [2023-08-24 07:22:20,180 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:22:20,181 INFO L351 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 2219 treesize of output 1987 [2023-08-24 07:22:20,233 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:22:20,234 INFO L351 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 1963 treesize of output 1923 [2023-08-24 07:23:49,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:23:49,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439742916] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:23:49,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:23:49,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 15] total 42 [2023-08-24 07:23:49,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632412104] [2023-08-24 07:23:49,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:23:49,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-08-24 07:23:49,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:23:49,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-08-24 07:23:49,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1419, Unknown=15, NotChecked=240, Total=1892 [2023-08-24 07:23:49,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 659 [2023-08-24 07:23:49,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 386 flow. Second operand has 44 states, 44 states have (on average 183.04545454545453) internal successors, (8054), 44 states have internal predecessors, (8054), 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) [2023-08-24 07:23:49,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:23:49,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 659 [2023-08-24 07:23:49,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:23:54,728 INFO L124 PetriNetUnfolderBase]: 19208/28339 cut-off events. [2023-08-24 07:23:54,728 INFO L125 PetriNetUnfolderBase]: For 20560/20560 co-relation queries the response was YES. [2023-08-24 07:23:54,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78341 conditions, 28339 events. 19208/28339 cut-off events. For 20560/20560 co-relation queries the response was YES. Maximal size of possible extension queue 930. Compared 180923 event pairs, 4482 based on Foata normal form. 12/28351 useless extension candidates. Maximal degree in co-relation 52542. Up to 11502 conditions per place. [2023-08-24 07:23:54,887 INFO L140 encePairwiseOnDemand]: 640/659 looper letters, 196 selfloop transitions, 59 changer transitions 14/269 dead transitions. [2023-08-24 07:23:54,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 269 transitions, 1621 flow [2023-08-24 07:23:54,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-24 07:23:54,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-24 07:23:54,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4568 transitions. [2023-08-24 07:23:54,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28882144663631765 [2023-08-24 07:23:54,899 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4568 transitions. [2023-08-24 07:23:54,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4568 transitions. [2023-08-24 07:23:54,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:23:54,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4568 transitions. [2023-08-24 07:23:54,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 190.33333333333334) internal successors, (4568), 24 states have internal predecessors, (4568), 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) [2023-08-24 07:23:54,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 659.0) internal successors, (16475), 25 states have internal predecessors, (16475), 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) [2023-08-24 07:23:54,927 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 659.0) internal successors, (16475), 25 states have internal predecessors, (16475), 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) [2023-08-24 07:23:54,928 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 386 flow. Second operand 24 states and 4568 transitions. [2023-08-24 07:23:54,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 269 transitions, 1621 flow [2023-08-24 07:23:54,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 269 transitions, 1593 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-24 07:23:54,947 INFO L231 Difference]: Finished difference. Result has 115 places, 105 transitions, 789 flow [2023-08-24 07:23:54,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=789, PETRI_PLACES=115, PETRI_TRANSITIONS=105} [2023-08-24 07:23:54,948 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 77 predicate places. [2023-08-24 07:23:54,948 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 105 transitions, 789 flow [2023-08-24 07:23:54,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 183.04545454545453) internal successors, (8054), 44 states have internal predecessors, (8054), 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) [2023-08-24 07:23:54,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:23:54,950 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-24 07:23:54,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 07:23:55,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:23:55,155 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:23:55,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:23:55,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1331306486, now seen corresponding path program 2 times [2023-08-24 07:23:55,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:23:55,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487883635] [2023-08-24 07:23:55,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:23:55,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:23:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:23:56,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 07:23:56,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:23:56,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487883635] [2023-08-24 07:23:56,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487883635] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:23:56,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551214196] [2023-08-24 07:23:56,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 07:23:56,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:23:56,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:23:56,193 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:23:56,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 07:23:56,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 07:23:56,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:23:56,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-24 07:23:56,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:23:56,808 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 07:23:56,809 INFO L351 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 39 treesize of output 19 [2023-08-24 07:23:56,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-24 07:23:56,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:23:57,898 INFO L322 Elim1Store]: treesize reduction 22, result has 93.4 percent of original size [2023-08-24 07:23:57,899 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 345 [2023-08-24 07:25:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-24 07:25:47,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551214196] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:25:47,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:25:47,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 10] total 35 [2023-08-24 07:25:47,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687114796] [2023-08-24 07:25:47,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:25:47,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-08-24 07:25:47,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:25:47,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-08-24 07:25:47,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1071, Unknown=0, NotChecked=0, Total=1260 [2023-08-24 07:25:47,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 659 [2023-08-24 07:25:47,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 105 transitions, 789 flow. Second operand has 36 states, 36 states have (on average 194.47222222222223) internal successors, (7001), 36 states have internal predecessors, (7001), 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) [2023-08-24 07:25:47,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:25:47,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 659 [2023-08-24 07:25:47,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:25:53,077 INFO L124 PetriNetUnfolderBase]: 23897/35515 cut-off events. [2023-08-24 07:25:53,077 INFO L125 PetriNetUnfolderBase]: For 156702/156702 co-relation queries the response was YES. [2023-08-24 07:25:53,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155159 conditions, 35515 events. 23897/35515 cut-off events. For 156702/156702 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 235251 event pairs, 6846 based on Foata normal form. 18/35533 useless extension candidates. Maximal degree in co-relation 154639. Up to 16251 conditions per place. [2023-08-24 07:25:53,343 INFO L140 encePairwiseOnDemand]: 640/659 looper letters, 225 selfloop transitions, 56 changer transitions 16/297 dead transitions. [2023-08-24 07:25:53,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 297 transitions, 2563 flow [2023-08-24 07:25:53,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-24 07:25:53,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-24 07:25:53,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3859 transitions. [2023-08-24 07:25:53,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3082022202699465 [2023-08-24 07:25:53,353 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3859 transitions. [2023-08-24 07:25:53,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3859 transitions. [2023-08-24 07:25:53,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:25:53,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3859 transitions. [2023-08-24 07:25:53,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 203.10526315789474) internal successors, (3859), 19 states have internal predecessors, (3859), 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) [2023-08-24 07:25:53,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 659.0) internal successors, (13180), 20 states have internal predecessors, (13180), 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) [2023-08-24 07:25:53,372 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 659.0) internal successors, (13180), 20 states have internal predecessors, (13180), 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) [2023-08-24 07:25:53,372 INFO L175 Difference]: Start difference. First operand has 115 places, 105 transitions, 789 flow. Second operand 19 states and 3859 transitions. [2023-08-24 07:25:53,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 297 transitions, 2563 flow [2023-08-24 07:25:53,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 297 transitions, 2457 flow, removed 39 selfloop flow, removed 9 redundant places. [2023-08-24 07:25:53,827 INFO L231 Difference]: Finished difference. Result has 132 places, 142 transitions, 1243 flow [2023-08-24 07:25:53,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1243, PETRI_PLACES=132, PETRI_TRANSITIONS=142} [2023-08-24 07:25:53,828 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 94 predicate places. [2023-08-24 07:25:53,828 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 142 transitions, 1243 flow [2023-08-24 07:25:53,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 194.47222222222223) internal successors, (7001), 36 states have internal predecessors, (7001), 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) [2023-08-24 07:25:53,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:25:53,830 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-24 07:25:53,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 07:25:54,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:25:54,035 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:25:54,036 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:25:54,036 INFO L85 PathProgramCache]: Analyzing trace with hash 659951355, now seen corresponding path program 1 times [2023-08-24 07:25:54,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:25:54,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071559354] [2023-08-24 07:25:54,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:25:54,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:25:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:25:54,352 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 07:25:54,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:25:54,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071559354] [2023-08-24 07:25:54,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071559354] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:25:54,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297536451] [2023-08-24 07:25:54,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:25:54,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:25:54,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:25:54,354 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:25:54,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 07:25:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:25:54,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-24 07:25:54,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:25:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 07:25:54,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:25:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 07:25:54,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297536451] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:25:54,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:25:54,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-08-24 07:25:54,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238809474] [2023-08-24 07:25:54,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:25:54,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-24 07:25:54,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:25:54,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-24 07:25:54,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-08-24 07:25:54,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 659 [2023-08-24 07:25:54,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 142 transitions, 1243 flow. Second operand has 22 states, 22 states have (on average 239.72727272727272) internal successors, (5274), 22 states have internal predecessors, (5274), 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) [2023-08-24 07:25:54,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:25:54,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 659 [2023-08-24 07:25:54,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:25:59,692 INFO L124 PetriNetUnfolderBase]: 23250/34588 cut-off events. [2023-08-24 07:25:59,692 INFO L125 PetriNetUnfolderBase]: For 276978/277066 co-relation queries the response was YES. [2023-08-24 07:25:59,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179900 conditions, 34588 events. 23250/34588 cut-off events. For 276978/277066 co-relation queries the response was YES. Maximal size of possible extension queue 1289. Compared 235618 event pairs, 5396 based on Foata normal form. 82/33998 useless extension candidates. Maximal degree in co-relation 179299. Up to 17460 conditions per place. [2023-08-24 07:25:59,941 INFO L140 encePairwiseOnDemand]: 650/659 looper letters, 391 selfloop transitions, 27 changer transitions 8/429 dead transitions. [2023-08-24 07:25:59,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 429 transitions, 4221 flow [2023-08-24 07:25:59,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-24 07:25:59,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-24 07:25:59,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3768 transitions. [2023-08-24 07:25:59,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3811836115326252 [2023-08-24 07:25:59,947 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3768 transitions. [2023-08-24 07:25:59,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3768 transitions. [2023-08-24 07:25:59,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:25:59,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3768 transitions. [2023-08-24 07:25:59,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 251.2) internal successors, (3768), 15 states have internal predecessors, (3768), 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) [2023-08-24 07:25:59,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 659.0) internal successors, (10544), 16 states have internal predecessors, (10544), 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) [2023-08-24 07:25:59,960 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 659.0) internal successors, (10544), 16 states have internal predecessors, (10544), 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) [2023-08-24 07:25:59,960 INFO L175 Difference]: Start difference. First operand has 132 places, 142 transitions, 1243 flow. Second operand 15 states and 3768 transitions. [2023-08-24 07:25:59,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 429 transitions, 4221 flow [2023-08-24 07:26:01,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 429 transitions, 3991 flow, removed 105 selfloop flow, removed 6 redundant places. [2023-08-24 07:26:01,007 INFO L231 Difference]: Finished difference. Result has 142 places, 158 transitions, 1354 flow [2023-08-24 07:26:01,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1354, PETRI_PLACES=142, PETRI_TRANSITIONS=158} [2023-08-24 07:26:01,007 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 104 predicate places. [2023-08-24 07:26:01,008 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 158 transitions, 1354 flow [2023-08-24 07:26:01,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 239.72727272727272) internal successors, (5274), 22 states have internal predecessors, (5274), 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) [2023-08-24 07:26:01,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:26:01,008 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-24 07:26:01,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-24 07:26:01,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-24 07:26:01,209 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:26:01,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:26:01,210 INFO L85 PathProgramCache]: Analyzing trace with hash -559928612, now seen corresponding path program 3 times [2023-08-24 07:26:01,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:26:01,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368225611] [2023-08-24 07:26:01,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:26:01,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:26:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:26:02,255 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 07:26:02,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:26:02,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368225611] [2023-08-24 07:26:02,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368225611] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:26:02,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419265580] [2023-08-24 07:26:02,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 07:26:02,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:26:02,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:26:02,256 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:26:02,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-24 07:26:02,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 07:26:02,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:26:02,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 65 conjunts are in the unsatisfiable core [2023-08-24 07:26:02,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:26:02,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 07:26:02,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 07:26:02,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 07:26:02,586 INFO L322 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-24 07:26:02,586 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2023-08-24 07:26:02,617 INFO L351 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 11 treesize of output 7 [2023-08-24 07:26:02,652 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 07:26:02,652 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-24 07:26:02,681 INFO L351 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 6 treesize of output 5 [2023-08-24 07:26:02,692 INFO L351 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 6 treesize of output 5 [2023-08-24 07:26:02,765 INFO L351 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 6 treesize of output 5 [2023-08-24 07:26:02,798 INFO L351 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 6 treesize of output 5 [2023-08-24 07:26:02,841 INFO L351 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 6 treesize of output 5 [2023-08-24 07:26:02,876 INFO L351 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 6 treesize of output 5 [2023-08-24 07:26:03,357 INFO L322 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-08-24 07:26:03,357 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 50 treesize of output 38 [2023-08-24 07:26:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:26:03,419 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:26:04,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 07:26:04,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419265580] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:26:04,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:26:04,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 15] total 46 [2023-08-24 07:26:04,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252435711] [2023-08-24 07:26:04,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:26:04,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-08-24 07:26:04,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:26:04,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-08-24 07:26:04,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1884, Unknown=13, NotChecked=0, Total=2162 [2023-08-24 07:26:04,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 659 [2023-08-24 07:26:04,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 158 transitions, 1354 flow. Second operand has 47 states, 47 states have (on average 180.80851063829786) internal successors, (8498), 47 states have internal predecessors, (8498), 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) [2023-08-24 07:26:04,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:26:04,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 659 [2023-08-24 07:26:04,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:26:21,978 INFO L124 PetriNetUnfolderBase]: 62866/92374 cut-off events. [2023-08-24 07:26:21,978 INFO L125 PetriNetUnfolderBase]: For 788786/788786 co-relation queries the response was YES. [2023-08-24 07:26:22,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493476 conditions, 92374 events. 62866/92374 cut-off events. For 788786/788786 co-relation queries the response was YES. Maximal size of possible extension queue 2982. Compared 682750 event pairs, 7275 based on Foata normal form. 36/92410 useless extension candidates. Maximal degree in co-relation 466882. Up to 27511 conditions per place. [2023-08-24 07:26:22,950 INFO L140 encePairwiseOnDemand]: 640/659 looper letters, 746 selfloop transitions, 246 changer transitions 30/1022 dead transitions. [2023-08-24 07:26:22,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 1022 transitions, 9889 flow [2023-08-24 07:26:22,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-24 07:26:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-24 07:26:22,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 9189 transitions. [2023-08-24 07:26:22,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2904969650986343 [2023-08-24 07:26:22,962 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 9189 transitions. [2023-08-24 07:26:22,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 9189 transitions. [2023-08-24 07:26:22,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:26:22,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 9189 transitions. [2023-08-24 07:26:22,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 191.4375) internal successors, (9189), 48 states have internal predecessors, (9189), 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) [2023-08-24 07:26:22,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 659.0) internal successors, (32291), 49 states have internal predecessors, (32291), 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) [2023-08-24 07:26:23,001 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 659.0) internal successors, (32291), 49 states have internal predecessors, (32291), 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) [2023-08-24 07:26:23,001 INFO L175 Difference]: Start difference. First operand has 142 places, 158 transitions, 1354 flow. Second operand 48 states and 9189 transitions. [2023-08-24 07:26:23,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 1022 transitions, 9889 flow [2023-08-24 07:26:25,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 1022 transitions, 9804 flow, removed 33 selfloop flow, removed 7 redundant places. [2023-08-24 07:26:25,085 INFO L231 Difference]: Finished difference. Result has 215 places, 381 transitions, 5005 flow [2023-08-24 07:26:25,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1325, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=5005, PETRI_PLACES=215, PETRI_TRANSITIONS=381} [2023-08-24 07:26:25,085 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 177 predicate places. [2023-08-24 07:26:25,085 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 381 transitions, 5005 flow [2023-08-24 07:26:25,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 180.80851063829786) internal successors, (8498), 47 states have internal predecessors, (8498), 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) [2023-08-24 07:26:25,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:26:25,086 INFO L208 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] [2023-08-24 07:26:25,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-24 07:26:25,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:26:25,287 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:26:25,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:26:25,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1043153970, now seen corresponding path program 2 times [2023-08-24 07:26:25,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:26:25,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416168358] [2023-08-24 07:26:25,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:26:25,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:26:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:26:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:26:26,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:26:26,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416168358] [2023-08-24 07:26:26,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416168358] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:26:26,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354869639] [2023-08-24 07:26:26,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 07:26:26,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:26:26,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:26:26,305 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:26:26,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-24 07:26:26,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-24 07:26:26,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:26:26,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-24 07:26:26,480 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:26:26,986 INFO L322 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-08-24 07:26:26,987 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 52 treesize of output 40 [2023-08-24 07:26:27,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 07:26:27,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 07:26:27,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354869639] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:26:27,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 07:26:27,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 28 [2023-08-24 07:26:27,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460057027] [2023-08-24 07:26:27,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:26:27,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 07:26:27,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:26:27,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 07:26:27,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2023-08-24 07:26:27,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 659 [2023-08-24 07:26:27,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 381 transitions, 5005 flow. Second operand has 16 states, 16 states have (on average 223.9375) internal successors, (3583), 16 states have internal predecessors, (3583), 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) [2023-08-24 07:26:27,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:26:27,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 659 [2023-08-24 07:26:27,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:26:48,403 INFO L124 PetriNetUnfolderBase]: 71989/107446 cut-off events. [2023-08-24 07:26:48,403 INFO L125 PetriNetUnfolderBase]: For 1937151/1937151 co-relation queries the response was YES. [2023-08-24 07:26:49,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734728 conditions, 107446 events. 71989/107446 cut-off events. For 1937151/1937151 co-relation queries the response was YES. Maximal size of possible extension queue 3631. Compared 844277 event pairs, 12570 based on Foata normal form. 6/107452 useless extension candidates. Maximal degree in co-relation 730976. Up to 36486 conditions per place. [2023-08-24 07:26:49,745 INFO L140 encePairwiseOnDemand]: 642/659 looper letters, 518 selfloop transitions, 172 changer transitions 13/703 dead transitions. [2023-08-24 07:26:49,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 703 transitions, 10664 flow [2023-08-24 07:26:49,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 07:26:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 07:26:49,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3049 transitions. [2023-08-24 07:26:49,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35590054861678533 [2023-08-24 07:26:49,749 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3049 transitions. [2023-08-24 07:26:49,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3049 transitions. [2023-08-24 07:26:49,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:26:49,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3049 transitions. [2023-08-24 07:26:49,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 234.53846153846155) internal successors, (3049), 13 states have internal predecessors, (3049), 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) [2023-08-24 07:26:49,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 659.0) internal successors, (9226), 14 states have internal predecessors, (9226), 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) [2023-08-24 07:26:49,759 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 659.0) internal successors, (9226), 14 states have internal predecessors, (9226), 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) [2023-08-24 07:26:49,759 INFO L175 Difference]: Start difference. First operand has 215 places, 381 transitions, 5005 flow. Second operand 13 states and 3049 transitions. [2023-08-24 07:26:49,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 703 transitions, 10664 flow [2023-08-24 07:28:11,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 703 transitions, 8529 flow, removed 1053 selfloop flow, removed 9 redundant places. [2023-08-24 07:28:11,600 INFO L231 Difference]: Finished difference. Result has 223 places, 406 transitions, 4896 flow [2023-08-24 07:28:11,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=4106, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4896, PETRI_PLACES=223, PETRI_TRANSITIONS=406} [2023-08-24 07:28:11,601 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 185 predicate places. [2023-08-24 07:28:11,601 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 406 transitions, 4896 flow [2023-08-24 07:28:11,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 223.9375) internal successors, (3583), 16 states have internal predecessors, (3583), 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) [2023-08-24 07:28:11,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:28:11,601 INFO L208 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] [2023-08-24 07:28:11,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-24 07:28:11,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-24 07:28:11,805 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:28:11,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:28:11,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1129187690, now seen corresponding path program 3 times [2023-08-24 07:28:11,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:28:11,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464821686] [2023-08-24 07:28:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:28:11,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:28:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:28:12,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:28:12,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:28:12,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464821686] [2023-08-24 07:28:12,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464821686] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:28:12,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823618178] [2023-08-24 07:28:12,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 07:28:12,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:28:12,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:28:12,771 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:28:12,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-24 07:28:12,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-24 07:28:12,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:28:12,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-24 07:28:12,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:28:13,602 INFO L322 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-08-24 07:28:13,603 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 52 treesize of output 40 [2023-08-24 07:28:13,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 07:28:13,655 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 07:28:13,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823618178] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:28:13,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 07:28:13,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 28 [2023-08-24 07:28:13,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381969697] [2023-08-24 07:28:13,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:28:13,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 07:28:13,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:28:13,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 07:28:13,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2023-08-24 07:28:13,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 659 [2023-08-24 07:28:13,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 406 transitions, 4896 flow. Second operand has 16 states, 16 states have (on average 223.9375) internal successors, (3583), 16 states have internal predecessors, (3583), 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) [2023-08-24 07:28:13,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:28:13,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 659 [2023-08-24 07:28:13,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:28:37,677 INFO L124 PetriNetUnfolderBase]: 83095/124162 cut-off events. [2023-08-24 07:28:37,677 INFO L125 PetriNetUnfolderBase]: For 1681518/1681518 co-relation queries the response was YES. [2023-08-24 07:28:38,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767239 conditions, 124162 events. 83095/124162 cut-off events. For 1681518/1681518 co-relation queries the response was YES. Maximal size of possible extension queue 4251. Compared 988442 event pairs, 22712 based on Foata normal form. 6/124168 useless extension candidates. Maximal degree in co-relation 762583. Up to 79098 conditions per place. [2023-08-24 07:28:39,510 INFO L140 encePairwiseOnDemand]: 644/659 looper letters, 500 selfloop transitions, 187 changer transitions 12/699 dead transitions. [2023-08-24 07:28:39,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 699 transitions, 9755 flow [2023-08-24 07:28:39,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 07:28:39,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 07:28:39,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3040 transitions. [2023-08-24 07:28:39,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548500058363488 [2023-08-24 07:28:39,514 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3040 transitions. [2023-08-24 07:28:39,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3040 transitions. [2023-08-24 07:28:39,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:28:39,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3040 transitions. [2023-08-24 07:28:39,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 233.84615384615384) internal successors, (3040), 13 states have internal predecessors, (3040), 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) [2023-08-24 07:28:39,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 659.0) internal successors, (9226), 14 states have internal predecessors, (9226), 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) [2023-08-24 07:28:39,524 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 659.0) internal successors, (9226), 14 states have internal predecessors, (9226), 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) [2023-08-24 07:28:39,524 INFO L175 Difference]: Start difference. First operand has 223 places, 406 transitions, 4896 flow. Second operand 13 states and 3040 transitions. [2023-08-24 07:28:39,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 699 transitions, 9755 flow [2023-08-24 07:29:12,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 699 transitions, 9246 flow, removed 63 selfloop flow, removed 6 redundant places. [2023-08-24 07:29:12,598 INFO L231 Difference]: Finished difference. Result has 237 places, 482 transitions, 6421 flow [2023-08-24 07:29:12,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=4608, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6421, PETRI_PLACES=237, PETRI_TRANSITIONS=482} [2023-08-24 07:29:12,598 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 199 predicate places. [2023-08-24 07:29:12,598 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 482 transitions, 6421 flow [2023-08-24 07:29:12,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 223.9375) internal successors, (3583), 16 states have internal predecessors, (3583), 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) [2023-08-24 07:29:12,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:29:12,599 INFO L208 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] [2023-08-24 07:29:12,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-24 07:29:12,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-24 07:29:12,804 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:29:12,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:29:12,804 INFO L85 PathProgramCache]: Analyzing trace with hash 861595604, now seen corresponding path program 4 times [2023-08-24 07:29:12,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:29:12,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251938363] [2023-08-24 07:29:12,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:29:12,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:29:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:29:13,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:29:13,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:29:13,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251938363] [2023-08-24 07:29:13,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251938363] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:29:13,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921951442] [2023-08-24 07:29:13,708 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 07:29:13,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:29:13,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:29:13,713 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:29:13,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-24 07:29:13,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 07:29:13,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:29:13,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-24 07:29:13,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:29:14,381 INFO L322 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-08-24 07:29:14,381 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 52 treesize of output 40 [2023-08-24 07:29:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 07:29:14,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 07:29:14,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921951442] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:29:14,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 07:29:14,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 27 [2023-08-24 07:29:14,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811965955] [2023-08-24 07:29:14,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:29:14,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 07:29:14,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:29:14,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 07:29:14,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2023-08-24 07:29:14,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 659 [2023-08-24 07:29:14,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 482 transitions, 6421 flow. Second operand has 16 states, 16 states have (on average 223.9375) internal successors, (3583), 16 states have internal predecessors, (3583), 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) [2023-08-24 07:29:14,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:29:14,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 659 [2023-08-24 07:29:14,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:29:40,896 INFO L124 PetriNetUnfolderBase]: 85111/127462 cut-off events. [2023-08-24 07:29:40,896 INFO L125 PetriNetUnfolderBase]: For 1899996/1899996 co-relation queries the response was YES. [2023-08-24 07:29:42,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820178 conditions, 127462 events. 85111/127462 cut-off events. For 1899996/1899996 co-relation queries the response was YES. Maximal size of possible extension queue 4423. Compared 1030152 event pairs, 15515 based on Foata normal form. 6/127468 useless extension candidates. Maximal degree in co-relation 815154. Up to 47559 conditions per place. [2023-08-24 07:29:42,922 INFO L140 encePairwiseOnDemand]: 642/659 looper letters, 619 selfloop transitions, 223 changer transitions 7/849 dead transitions. [2023-08-24 07:29:42,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 849 transitions, 12459 flow [2023-08-24 07:29:42,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 07:29:42,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 07:29:42,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3055 transitions. [2023-08-24 07:29:42,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3566009104704097 [2023-08-24 07:29:42,927 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3055 transitions. [2023-08-24 07:29:42,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3055 transitions. [2023-08-24 07:29:42,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:29:42,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3055 transitions. [2023-08-24 07:29:42,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 235.0) internal successors, (3055), 13 states have internal predecessors, (3055), 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) [2023-08-24 07:29:42,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 659.0) internal successors, (9226), 14 states have internal predecessors, (9226), 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) [2023-08-24 07:29:42,970 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 659.0) internal successors, (9226), 14 states have internal predecessors, (9226), 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) [2023-08-24 07:29:42,971 INFO L175 Difference]: Start difference. First operand has 237 places, 482 transitions, 6421 flow. Second operand 13 states and 3055 transitions. [2023-08-24 07:29:42,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 849 transitions, 12459 flow [2023-08-24 07:30:25,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 849 transitions, 11876 flow, removed 229 selfloop flow, removed 4 redundant places. [2023-08-24 07:30:25,259 INFO L231 Difference]: Finished difference. Result has 250 places, 505 transitions, 7096 flow [2023-08-24 07:30:25,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=6196, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7096, PETRI_PLACES=250, PETRI_TRANSITIONS=505} [2023-08-24 07:30:25,260 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 212 predicate places. [2023-08-24 07:30:25,260 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 505 transitions, 7096 flow [2023-08-24 07:30:25,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 223.9375) internal successors, (3583), 16 states have internal predecessors, (3583), 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) [2023-08-24 07:30:25,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:30:25,261 INFO L208 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] [2023-08-24 07:30:25,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-24 07:30:25,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-24 07:30:25,461 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:30:25,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:30:25,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1247955426, now seen corresponding path program 5 times [2023-08-24 07:30:25,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:30:25,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707437004] [2023-08-24 07:30:25,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:30:25,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:30:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:30:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:30:26,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:30:26,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707437004] [2023-08-24 07:30:26,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707437004] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:30:26,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827682256] [2023-08-24 07:30:26,353 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 07:30:26,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:30:26,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:30:26,355 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:30:26,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-24 07:30:26,498 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 07:30:26,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:30:26,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 62 conjunts are in the unsatisfiable core [2023-08-24 07:30:26,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:30:26,664 INFO L351 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 11 treesize of output 7 [2023-08-24 07:30:26,713 INFO L351 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 6 treesize of output 5 [2023-08-24 07:30:26,762 INFO L351 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 6 treesize of output 5 [2023-08-24 07:30:26,811 INFO L351 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 6 treesize of output 5 [2023-08-24 07:30:27,145 INFO L322 Elim1Store]: treesize reduction 4, result has 84.0 percent of original size [2023-08-24 07:30:27,145 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 52 treesize of output 40 [2023-08-24 07:30:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 07:30:27,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:30:28,382 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:30:28,383 INFO L351 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 111 treesize of output 75 [2023-08-24 07:30:28,420 INFO L322 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2023-08-24 07:30:28,420 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7467 treesize of output 7104 [2023-08-24 07:30:28,567 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:30:28,568 INFO L351 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 2347 treesize of output 2307 [2023-08-24 07:30:28,614 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:30:28,615 INFO L351 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 2283 treesize of output 2051 [2023-08-24 07:30:28,668 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:30:28,669 INFO L351 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 2027 treesize of output 1923